Paper Technology Journal

Gold East Paper, Dagang –A non-plus-ultra papermaking line.
News from the Divisions:
Stonebridge – the world’s biggest
single-line deinking system in China.
Voith keeps customers “Perfect Fit”
for the future – with custom-tailoredrebuilds.
A vision becomes reality –Online calendering of LWC offset/
rotogravure printing grades with high
DIP content at LEIPA, Schwedt.

21

Voith Paper Rolls Division –Your fast, flexible and reliable partneraround the roll.
Paper Culture:“Black on White” –400 Years of Newspapers.

Contents

EDITORIAL
Foreword

1Gold East Paper, Dagang – A non-plus-ultra papermaking line2

NEWS FROM THE DIVISIONS“Stonebridge” – the world’s biggest single-line deinking system in China

10

Energy efficient HM Rotor –Power saving solution for virgin bale repulping applications

14

Voith Paper – A perfect partner at any time
International Customer Symposium “Graphic Grades”: May 9 to 11, 2006

17

A vision becomes reality – Online calendering of LWC offset/rotogravure
printing grades with high DIP content at LEIPA, Schwedt

18

Voith keeps customers “Perfect Fit” for the future – with custom-tailored rebuilds

22

Norske Skog Golbey – Upgrading the heart of the paper machine

25

Single NipcoFlex press technology –The cost-effective dryness guarantee for woodfree grades

28

Voith Drive – Small is beautiful;the innovative drive solution for a more economical paper production

32

RollMaster – new possibilities for optimizing and troubleshooting reeling systems

34

Voith Paper Rolls Division – Your fast, flexible and reliable partner around the roll

38

Voith Paper Rolls Launches the Latest Generation of Polyurethane Covers

40

PikoTeknik developed next generation non-stick roll coating

43

Endura series – Hard coatings for Yankee and MG Cylinders

44

Virtual Reference Grinding – Joseph von Fraunhofer Award 2005

46

Full steam ahead! Steam technology – an important part of the drying process

47

Paper Barring – Successful Optimization Through Systematic Analysesof all Relevant Subsystems

50

Computer Based Training (CBT) –interactive computer based training for the pulp and paper industry

54

High-shaft Technology – a weaving innovation breaks new groundin forming fabric design

58

Voith Paper and IHI Strengthen the Partnership – Create, Build-Up, Secure!

62

Right on the customer’s doorstep – Voith Paper Technology Days

64

Give work safety an additional chance

66

PAPER CULTURE“Black on White” – 400 Years of Newspapers

67

Highlights

70

Cover illustration:
New every day, but 400 years old
the newspaper.
In the background: Dagang PM 3

1

Dear Customer, Dear Reader,Once again, Voith Paper looks back on a very successful year. Nearly all our
new installations and rebuilds were started up in time and rapidly attainedtarget production after a short optimization phase.
Together with the high volume of orders received, this was reflected very favorably in our results for the year under review. Voith Paper again exceeded thegood result of the previous year with a 2005 operating income at a record level.
Over the last few years we have purposely shaped Voith Paper into a comprehensive system supplier. The latest step in this direction was the mergerof Voith Paper and Voith Fabrics into a single Group Division one year ago.
Today our customers benefit all the more from complete solutions with
“Perfect Fit” modules and elements.
Dr Hans-Peter Sollinger
Executive Chairman Voith Paper

As a complete system supplier, however, we want to be perceived as the“Perfect Partner” for our customers not only during the planning and execution
phases, but right through the entire production line life span. Our primary goalin this connection is to minimize project costs, taking into account the specificinvestment costs including start-up expenses and ongoing operating costs
and at the same time steepest possible start-up curves and optimal overall
performance.
In order to stay one step ahead of our customers‘ demanding requirements,
we always have technical innovations and new concepts in the pipeline.
At the international Voith Paper customer symposium on May 9 and 10 this year,
we shall be presenting our latest developments in detail.
As a special highlight of this symposium – entitled “A Perfect Partner at any
time” – you can witness the inauguration of our new Paper Technology Center.
By setting new benchmarks in enhanced solutions for the paper industry,
this PTC will uphold our mutual teamwork by making you more competitiveon the one hand, and on the other hand consolidating Voith‘s technologicalleadership even further.

Dr Hans-Peter Sollinger
on behalf of the Voith Paper Team2

Thomas Frühauf
Paper Machines Graphic
thomas.fruehauf@voith.com

Gold East Paper, Dagang –A non-plus-ultra papermaking line
Klaus Meier
Paper Machines Graphic
klaus.meier@voith.com

In 1999 Gold East Paper in Dagang, China started up their
PM 1 and PM 2 coated wood free grades lines supplied by Voith. Since
then both paper machines, with a wire width of 10,400 mm, have continually increased speed and production records. Dagang is a greenfield mill three hours’ drive from Shanghai on the Yangtze, China’s
biggest river. The site was foresightedly dimensioned to allow enoughspace for additional paper production lines. In August 2003 theZhenjiang Star Group in Yiangzu province decided to add another

Jörg Albrecht
Finishingjoerg.albrecht@voith.com

21/06

production line in Dagang, and Voith, as preferred supplier, received
the order for PM 3, likewise operated by Gold East Paper.

3Max. parent roll diameter

3,500 mm

Parent roll width

9,770 mmMax. parent roll weight

130 t

Production capacity PM 3

1,100,000 t/year

Wire width PM 3

10,600 mm

This makes Dagang, in Yiangzu province,

In view of China’s steeply rising paper

structures and logistics are in place. The

China’s biggest production plant for dou-

consumption (at about 8% p.a.), Zhenjiang

Yangtze river provides plenty of process

ble-coated wood free grades. Gold EastStar Group expanded production capaci-

water, and there is no problem with addi-

Paper now operates three production lines

ties in Dagang to meet demand accord-tional energy supplies. Our new PM 3

there with a total capacity exceeding two

ingly. This also reflects China’s efforts togives us so much more production capac-

million tons annually.

increasingly cover paper requirements

ity that we can now meet the rising de-from its own mills, at the same time

mand for coated wood free grades both in

The PM 1 and PM 2 machines delivered

catching up with the latest technology or

Asia and internationally.”

by Voith in 1999 each produce 500,000

even advancing to the front line.
Raw materials supplies are assured by

t.p.a. of art paper, roll offset and copy
paper (see twogether 8). The new Voith

Here is what Gold East Paper says:

river transport on the Yangtze, with direct

machine PM 3 that started up in mid-

“China’s paper market is enormous, so

connection to the ocean. Fiber material,

2005 is designed for producing similar orcapacity expansions are indispensable.

coating materials, chemicals and addi-

higher-quality grades at the impressive

Dagang is the ideal location for this ex-

tives are either transshipped at the Gold

(100%-efficiency) rate of 1,100,000 t.p.a.

pansion project. There is still enoughEast Paper dock in Dagang, or supplied

space there, and all the necessary infra-

from the company’s own warehouses.
21/06

4

1

The project –The project was executed according toplus the well-proven TwinFlo double discinnovation plus investment

Voith’s “Process Line Package” procedure.

refiner technology – together with a com-security

In other words, Voith as coordinating part-plete line for bleached long fiber chemical

ner was responsible for the design, pro-

pulp – ensure the necessary high finished

Voith was entrusted by the Chinese client

curement and installation supervision ofstock quality is fed to the blending chest.

in August 2003 with full responsibility foreverything affecting the papermaking pro-

Well-proven stock preparation process

this bold and innovative project. From

cess. Voith was also responsible for meet-components are installed, including Voith

pulp bale handling to finished paper rolls,

ing all deadlines and complying with theVS pulpers and E series deflakers.

Voith supplied all key components of thequality and production specifications – to

new PM 3 production line.

the great relief of all concerned!

Another Gold East Paper comment:

With a wire width of 10,600 mm PM 3

required quality before it is diluted and“Our new PM 3 meets a long-standing

may not be the widest paper machine inpumped to the MasterJet headbox. The

need. Voith is a highly competent and re-

the world, but experts have known for aapproach flow includes the two largest

puted supplier of papermaking lines andlong time that production output depends

pressure screens ever supplied by Voith,auxiliary equipment, and our cordial part-much more on throughput and overall line

each with a total screening area of 13 m 2 .

nership with Voith in all areas of paper-

efficiency than on wire width. Its enor-

making technology goes back many years.

mous capacity of 1,100,000 t.p.a. (atIt has always been matter-of-course for100% efficiency) and design speed of

us to develop new concepts and innova-

2,000 m/min make PM 3 the world’s high-

The DuoFormer TQv has a MasterJettions together. That is one of the main

est-performance paper machine.

headbox with well-proven OnQ ModuleJet

Peripheral cleaning, screening and processing stages prepare the stock to thereasons why Zhenjiang Star Group and we

Paper machine

dilution water control. The forming unit

as plant operators chose Voith to supply

Compared with the PM 1 and PM 2 lines,

generates a homogeneous sheet by per-this new production line.”

this new one represents a quantum leap

fect fines and filler distribution to improvein production capacity and speed. Anotherformation with almost symmetrical drain-

At the heart of this new facility is the on-development challenge was the online op-age.

line paper machine for double-coatederation of PM 3 with integrated coatingwood free grades in the basis weightmachinery (1 SpeedSizer and 2 JetFlow F

After sheet formation in the DuoFormer

range of 70-128 g/m 2 , based on the Voith

coaters), as against PM 1 and PM 2 that

TQv, the wet web is taken off the bottom“One Platform Concept”. Gold East Paper’s

still produce coated grades in an offline

wire by the first pick-up roll and fed to

new PM 3 incorporates innovative trend-

concept.

the Tandem NipcoFlex press section without open draws ensures optimal runnabil-setting key components well-proven over
the years on dozens of production lines

Stock preparation

ity. Here the web is further dewatered andcompacted. The shoe length plays a par-worldwide. And the latest technologies
are used here in order to meet the de-Two complete fiber lines for bleachedticularly important role in this connection

manding requirements for dependable

short fiber chemical pulp, each including

by preventing crushing of the hard-to-de-

production and high profitability.

bale handling and pulper charging systemwater furnish.

21/06

5

Fig. 1: Gold East Paper PM 3 –overall length 352 m.
Fig. 2: Pulp bale handling.
Fig. 3: TwinFlo double disc refiner system.
2

3

21/06

6

4

In the TopDuoRun dryer section, fitted

after the dryer section in an EcoCal cal-

The web is then coated on-line in two

with a ropeless sheet transfer system, theender with a FlexiTherm top roll (at 80 °C

Voith JetFlow F dynamic blade coaters. As

web is dried to a residual moisture con-surface temperature) and a 52-zone Nip-a new development, the blade beams aretent of 4%. Voith Paper Automation sup-Corect bottom roll. This guarantees an ex-

entirely made of CFC (Carbon Fiber Com-

plied an EnviroScan for the first dryer

cellent CD profile, as required.

pound), a world-wide first in this width.
For the specialty grade calendar paper,group that enables online measurement ofdryness values and moisture cross-profile

The SpeedSizer, optionally using sizing,conventional sizing is used on coater 1

directly after the press section – precisely

coating or a single-sided combination of

instead of color, which is otherwise usedtheboth and applies the precoat to the paper.

only in film presses. The new dynamic

The following infra-red and convective

coater has no problem with this.

tool

papermakers

havealwaysdreamed of!

drying makes a targeted balance possible
To ensure consistently uniform coating in

by influencing binder migration and pene-

The three TopDuoRun after-dryer sections

the SpeedSizer, the web is pre-calendered

tration.

following the SpeedSizer and blade coaters are of conventional design with open

5

6

hoods.
For perfect coating results, optimal infrared drying is required. After excellent
results with the Krieger infra-red dryers
already operating for years on paper machines 1 and 2, the customer again chose
Krieger equipment. An integrated dryer
was, therefore, installed after the SpeedSizer, and four more InfraAir drying systems after the two JetFlow coaters. They
are all fitted with the Krieger InfraMatic

21/06

7

Fig. 4: Coating section – the two on-line
DynaCoaters, each followed by a TopDuoRun
dryer group.
Fig. 5: InfraAir.
Fig. 6: Sectional view of the InfraMatic.
Fig. 7: Janus MK 2.

Finishingrolls with Rubin G covers are flexible rolls
and extremely resistant to marking and

The finishing section includes a reel spool/wear. Thanks to the patented NipProtect

parent roll handling system, two Janus

system, all rolls can be opened smoothly

MK 2 calenders, and two VariPlus winders.

in considerably less than 0.5 seconds.
Rapid parent roll changing is ensured by

The reel spool handling system includes

unwinding with flying splice. A Sensomat

3 automatic parent reel carts and 3 mag-

Plus ensures meticulously wound rolls.

azines for parent rolls as well as 4 maga-

Apart from the normal 9-nip Janus oper-zines for empty reels spools.

ating mode, both machines can also run
in single-nip mode; the paper is then cal-

system for perfect control of moisture

Included in the scope of supply are twoendered in the top and bottom nips. Thesecross-profile. The infra-red dryers onvery large 10-roll offline Janus MK 2 cal-Janus calenders give the paper surfaces

PM 3 represent an installed infra-red ca-enders. The 45° stack angle enables fast

optimal gloss and smoothness, resulting

pacity of more than 15 MW in a very smallroll changing and easy access to all rele-in excellent printability.

space.

vant component groups. Maximum operat-

At the end of the paper machine the dou-

ing speed is 1,500 m/min. Nipco rolls are

The two highly automated VariPlus wind-used at top and bottom. The polymere

ers cut the 10 m wide web into smaller

ble-coated sheet is wound up on a well7

proven Sirius reel into jumbo rolls weighing 130 tons each. Reel spoolchangesare done by Voith’s patented EcoChange
W, an ingenious device with two traversing high-pressure water jets that slit the
web at lightning speed before it is takenover by the new empty reel spool.
In order to minimize the risk of sheet
breaks, above all during coating, thisstate-of-the-art paper machine is also fitted with a web inspection system.
Voith Paper Automation furthermore supplied cross-profile control systems along
the machine, a complete bearing monitoring system, and the entire machine control engineering.

21/06

8

8

widths and wind them into rolls according

run perfectly smoothly. The result is fault-

Erection and commissioning –to the size required by the consumer. For

lessly wound paper rolls with optimal

all targets reached on time

the grades produced in Dagang, the Vari-hardness. Since both winders are equipped

Plus is the ideal machine: the roll setswith automated butt-splicing for unwind-

Projects of this magnitude cannot suc-are supported on the center drum in theing, there are no ungainly splices in the

ceed without perfect teamwork between

3 o’clock and 9 o’clock positions respec-

finished rolls and further processing by

customer and supplier right from the start.

tively, thus enabling the particularly sen-the consumer is all the more trouble-free.

Once again, Gold East Paper and Voith
met this joint challenge very successfully.

sitive line force control required for delicate paper surfaces. This positive effect

The impressive dimensions of this paper

The results speak for themselves. Afteris reinforced by a patented MultiDrivemachine are underlined by the following

finalizing the machine concept together,cover on the center drum that greatly re-technical data:

the engineering work started. Since theduces the line force acting on the roll set.

● Production capacity 1,100,000 t.p.a.

start-up date had already been estab-

Even with 6-ton paper rolls wound at● Design speed 2,000 m/min

lished, there was no time to waste, so

2,500 m/min, the VariPlus winders still● Wire width 10,600 mm

Voith took over the basic and detailed en-● Overall length from former to winders

gineering for the entire production line.

9

352 m
● Total number of components

All expectations were fulfilled, and the

manufactured 1,585,900

all-important engineering documentation● Number of containers delivered

was handed over in good time.

1,300● Number of individual deliveries
9,200● Total weight of all deliveries
37,600 tonnes.

10

21/06

As before with PM 1 and PM 2, the customer took over all erection work. Gold
East Paper installed tens of thousands ofmachinery and plant components fault-

9Fig. 8: The OnV web inspection system
plays a vital role.
Fig. 9: VariPlus winder.
Fig. 10: Schematic layout of PM 3.

The results – first class paper
in record time

Voith scope of delivery

After more than meeting the start-up

Complete production line comprising stock
preparation, paper machine and finishing section as described above, including in detail:deadline, the next step was to optimize
the product quality. Gold East Paper andVoith scored a bulls-eye in numerous respects with the PM 3 project. After fulfilllessly under Voith supervision – a fantas-

ing all the product quality guarantees only

tic achievement.

six weeks after startup, operation test
acceptance already took place in mid-

Meanwhile the well-planned training pro-

December 2005. The paper grades pro-gram was started. For twelve weeks the

duced on this machine are destined notcustomer’s personnel learnt all the neces-

only for the Chinese market, but also forsary theoretical knowledge, backed upexport.

with tours of the plant in course of erection. This was followed up by practical

The production speed increases weretraining directly on the machine, including

likewise reached earlier than planned.

the commissioning and start-up phase.

Currently the machine is producing firstclass art paper at a steady speed of

The operating checks also began on time,

1,500 m/min, and roll offset printing

and only a few days after the first paper

grade production is in the test phase.

on wire, the Sirius reel was already winding up at full web width. As a result, theFurther quality optimization and efficiency

start-up deadline was beaten by a fullenhancement measures are proceeding

week.

intensively, so that steady operation at
1,800 m/min should soon be reached.

Furthermore, all fabrics were supplied byVoith Paper Fabrics and showed excellent

All in all, Dagang PM 3 sets benchmarks

results throughout the paper machine –not only in Voith Engineered Reliability,

well-coordinated single-source deliveries

but also in Gold East Paper Innovation,certainly pay off!

Efficiency and Punctuality.

● 4 bale dewiring and raw materials handlingsystems for feeding 3 virgin fiber pulpers● Advanced Wet End Process (approach flow,
broke preparation and fiber recovery)● Process water systems including water
treatment and cooling water● Chemicals preparation and dosing technology● Broke pulpers and broke preparation● All chests and tanks● Vacuum systems● Steam and condensate systems● Air technology for the paper and coatingmachines● Working stations for pre-coat and top-coatcolor● Complete tail threading systems including
belts and tail cutters● Paper roll transport systems including
parent reel carts and conveyors● Central lubrication systems● Compressed air plant● All piping and valves● PCS 7 control systems for the paper machine,
Janus calenders and winders● Web inspection system comprising
3 transmission and 2 reflection beams● Voith Monitoring vibration analysis system
for the complete production line
● All field instruments and control valves● All PM clothing by Voith Paper Fabrics(VF forming wires, press felts anddryer fabrics)● Re-reeler

21/06

10

1

“Stonebridge” –the world’s biggest single-line deinking system
in China
On May 23, 2005 the deinking system started up at
Hebei Norske Skog Longteng Paper Co.’s new greenfield newsprint
mill in Zhaoxian/Hebei Province, China (Fig. 1). Designed for
330,000 tons per year of newsprint from 100 % recovered paper,
this mill now operates the world’s biggest single-line deinking
system so far, with a capacity of 1,100 BDMT/24 h finished stock.
Kai BestianFiber Systems
kai.bestian@voith.com

21/06“Stonebridge” is not only the name of an– from bale dewiring, pulper charging andancient bridge in Hebei Province, it also

stock cleaning right through to the stor-

serves as codeword for Voith Paper’s de-age tower, including water clarification

livery of the world’s largest single-line

and rejects handling – were delivered by

DIP system so far. The quality decisive

Voith as a model example of its provenkey components of this new deinking line

EcoProcess concept.

11

Fig. 1: Hebei Norske Skog Longteng Paper Co.
in Zhaoxian, Hebei Province, China.
Fig. 2: Block diagram of up to now the world’s
biggest single-line deinking system DIP I
at Hebei Norske Skog Longteng Paper Co.
Fig. 3: Part of the pulper charging line, bale
opener on the left.
2
PM

Storage tower

Bleaching II, reductive

Disc filter II

Flotation II

Bleaching I, oxidative

Disperging

Loop II

Disc Filter I

LC screening II 0.15

Flotation I

Cleaning

MC-Screen Ø1.2/II 0.25

HiPRO-HD Cleaner

Loop I

Pulping

Levelling Drum

Bale Opener

Charging

FW
DAF 2
DAF 1
Rejecthandling

Sludgehandling
DAF 3

Located in China’s

in particular, and excellent operating ex-“golden triangle”

perience with numerous Voith deinking

SaveallPM
showerwater

Scope of supply

systems delivered to Norske Skog Pan

The stock preparation system is designed

It is not by chance that Zhaoxian was se-Asia, predestined Voith as a strong part-for a capacity of 1,100 t / 24 h finishedlected as the location for this high-tech

ner with a successful track record. Basedstock using 100 % recovered paper fur-newsprint mill. The Norske Skog Pan Asia

on good experience on both sides, greatnish in preparation to take advantage ofGroup took the clear decision to decisive-

importance was attached by the customer

the national collection of recovered paperly participate in China’s future economic

and supplier to using technology and com-in China.

growth in the “golden triangle” area, com-ponents well proven in practice.

prising the regions Peking, Tianjin and3

Hebei Province.
Focus on customer benefit
Norske Skog Pan Asia’s decision to significantly expand its existing presence in the
Chinese market (Shanghai Pan Asia Potential) with this major investment required
meticulous planning and, as one of themost important factors, a strong partner.
Voith’s comprehensive deinking know-how

21/06

12

4

Kyoungyong
Lim
Senior Operations Manager
Hebei Norske
Skog Longteng
Paper Co.

“We are extremely satisfied with ourpaper quality so far. This success islargely attributable to Voith’s smoothand efficient project handling.”

Voith not only supplied the key DIP pro-

2-stage IC slot screening. This pre-The second loop comprises EcoCell post-

cess components influencing quality, –screening is critically important for highly

flotation for residual printing ink removalfrom bale dewiring and pulper charging,effective stickies removal at an early(Fig. 4), then further thickening using

HC cleaning, MC, IC and LC screening,stage in the stock preparation process.

Thune disc filter technology, and finallyreductive bleaching to ensure the required

through to EcoCell flotation, disc filtering,brightness increase.

dispersion, process water treatment andAfter pre-screening and cleaning, the first

rejects handling – but also basic engi-

stage in deinking, comprising EcoCell pre-neering for the process and automation

flotation (Fig. 4), is installed. This is fol-

Voith Paper Fiber Systems’ partners fortechnology.

lowed by a 4-stage LC slot screening forthis project were Voith Paper Euskirchen

optimal stickies removal (Fig. 5). The A-B

who delivered the complete recovered

The system is designed as a classicaldesign in the second stage is not only

paper charging system, Voith Paper Tran-

2-loop system (Fig. 2).

highly efficient, it also minimizes size

by with their proven disc filters, and joint-

reduction of the stickies and ensures reli-venture partner Meri who supplied the

The recovered paper is fed to Loop I via aable operation. Here the proven MSS Multi-

subsystems for water treatment (Fig. 8)

bale opening and pulper charging system

Screen and MST MiniSorter technology is

and rejects handling.

from Voith Paper Euskirchen, with a ca pac-in operation.
With this clearly defined stock prepara-

ity of around 110 bales per hour (Fig. 3).
Accepts from the LC slot screening aretion concept, the quality objective of ef-

then thickened using Thune disc filters

fectively removing contaminants at an

cleaning to a 2-stage Combisorter MC

before passing to dispersion (Fig. 7) andearly stage at high production rates, hashole screening subsystem, followed byoxidative bleaching.

been reached very successfully.

After pulping, the stock is passed via HC

21/06

13
Fig. 4: EcoCell pre- and postflotation.
Fig. 5: 4-stage LC slot screening with A-B designin the second stage. In the bottom right handcorner is the MiniSorter final stage hole screening, in the background the Thune disc filters andon the right the EcoCell flotation.
Fig. 6: Part of the covered storage for recovered
paper.
Fig. 7: Disperger system with direct steam
heating.
Fig. 8: Meri’s Deltapurge microflotation in the
final stages of assembly.
5

6

Apart from basic engineering for the pro-Technical data

cess and automation technology, the stock
preparation supply package also included

Plant

DIP 1

supervision of erection and commissioning.

Product

Newsprint, 60% ISO

Furnish65% American Old Newspapers
15% Chinese Old Newspapers
20% American Old Magazines

Design capacity (pulper charging)

1,350 t / 24 h bone dry

DIP finished stock (gross)

1,100 t / 24 h bone dry

The basic engineering for the automation
technology covered equipment layout,
functional planning, software testing andcommissioning support.
7

8

21/06

14

Energy efficient HM Rotor –Power saving solution for virgin bale repulping
applications
A recently completed demonstration project, funded partly
by the Wisconsin Focus on Energy program and Wisconsin PublicService Corporation, was conducted to measure the performance andenergy savings of the Voith engineered HM Rotor installed in a virgin
furnish repulper at Wausau Paper in Rhinelander, Wisconsin, USA.

Jerry Aue
Forest Products Energy Engineer
Focus on Energy
Aue Energy Consulting
Plover, Wisconsin, USA
jaue@charter.net

Wausau Paper is a leading producer ofprovide agitation that causes the material

fine printing and writing, technical spe-on top to be drawn below the surface of

ciality and towel and tissue papers. Theirthe water and defibered. A mill typicallyRhinelander, Wisconsin location produces

operates several furnish repulpers, twenty

pressure sensitive and protective barrier

four hours a day, seven days a week.

papers on three paper machines.
Repulper rotor blade design is one area ofIntroduction

opportunity that Voith has identified tocontrol a mill’s operating costs. The ener-

Bill Fineran
Voith Paper Inc., Appleton, USA
bill.fineran@voith.com

1

A multitude of economic forces are pres-gy saving HM Rotor (Fig. 1), a tall, swept-

ently at work influencing the profitability

back blade design, has been engineeredof paper mills. Rising energy costs con-by Voith to provide effective turbulence oftribute to these economic pressures. In

fiber suspensions with maximum rotor-

addition, non-integrated mills that mustfiber contact while consuming low energy.

purchase their raw paper making fibers

The HM Rotor is specifically intended forare at the mercy of volatile market pulp

retrofitting existing repulper rotors inprices.

North America.

Voith designs equipment and solutions to

While considering the HM Rotor technolo-

help mills offset their rising operating

gy for one of their existing furnish repulp-

costs. Many paper mills purchase theirers, Wausau Paper turned to Focus on

raw materials in the form of dried pulp

Energy to verify the energy savings bybales for use as their paper making fiber

testing and metering the HM Rotor in

furnish. These mills must make down, or

comparison with a conventional rotor in

repulp the bales in order to put the pulp

the same repulper.

fibers into suspension for preparation and

21/06

delivery to the paper machine. The

Focus on Energy is a public-private part-

repulper, used to mix the pulp bales innership offering energy programs whosewater is, in simple terms, a large tankgoals are to encourage energy efficiency

with a mixer, or rotor, on the bottom. En-

and use of renewable energy, enhance theergy is applied to the rotor in order toenvironment and ensure the future supply

15

Fig. 1: Energy saving HM Repulper Rotor.
Fig. 2: The results of six days of powermonitoring – conventional versus HM Rotor.
Fig. 3: Consistent reduction in energy requirement throughout the pulping time compared withthe conventional rotor.
Furnish: 50/50 bleached hardwood/softwood pulpof energy. Their services include walk-

The mill used the same furnish recipe

separated properly (100% defibered with-through audits, project evaluation assist-throughout all testing performed duringin the existing pulping time), that the newance, measurement and evaluation of

our demonstration and all efforts were

blade had no adverse impact on fibersavings, financial assistance for stalled

made to operate the pulper under similar

quality and to record the difference inprojects, training opportunities, tools toprocess conditions (operating level, tem-

power consumption between the two

manage energy and third-party reviews.

perature and pulping consistency).

blades.

Mill test conditions

The existing Voith repulper was initially

An assessment of the rotors included theinstalled at the Rhinelander mill in 1992.

conditions inside the pulper and measure-

The Focus on Energy Program provided a

The repulper was supplied with a HOG

ments of the gaps to insure proper clear-share of the cost to verify savings projec-

Rotor which, for the purpose of our com-ance between the rotor and extraction

tions. Wisconsin Public Service Corpora-parison, is referred to as a “conventional

plate. Electrical use was metered for thetion, the local electric supply utility,

rotor”. A new HOG Rotor (not worn) was

test period. The metering recorded theteamed with Focus on Energy by provid-

installed for this test. The repulper oper-

rotor energy (kW) used in 15 minuteing the electrical metering. Voith andates on a batch basis and is designed tointervals.

Wausau Paper conducted the defibering

deliver approximately 8,000 lbs of fiber

examination, freeness, fiber quality analy-

per batch. Pulping time is 15 minutes.

sis and other testing.

We also recorded motor load amperagereadings throughout the pulping time.

Test procedure

Pulper grab samples were taken at 4, 6,

Wausau Paper uses 50 percent hardwood

10 and 15 minute intervals from startup.

and 50 percent softwood in their process

Representatives from Wausau Paper, Voith,furnish mix. The mix consists of 100 %Wisconsin Public Service and Focus on

We measured the degree of defibering on

virgin fiber purchased in the form of dried

Energy met to form a test plan. The goal

all grab samples using two methods. In

pulp bales.

of our testing was to verify that fibers are

the first method, a diluted sample was

2Batch repulper power response – three day comparison
500

Motor rating

Power draw [HP]

Kilowatts

400.0
372.9
350.0
300.0
250.0
200.0
150.0
100.0
50.0

0.0
0:00-23:45 Day 1
Day 2
Day 3
Conventional rotor

3

Batch pulper power response – single batch comparison

Day 4

Day 5
HM Rotor

Day 6

450
400
350
300
250

Conventional rotor (Voith HOG)
HM Rotor

200
150
100
50
0

4

6

8
10
Pulping time [mins]

12

14

16

21/06

16

Fig. 4: Identical defibering characteristics
between conventional and HM rotors.
Furnish: 50/50 bleached hardwood/softwood pulp
Fig. 5: Energy saving HM Rotor summary.

poured onto a blue glass. Undefiberedconditions. Fig. 2 shows the results of six

cal furnishes under similar process situa-

material on the glass was compared to adays of metering power demand for thetions. This reduction in energy represent-

Voith Speck Index (VSI) to establish theconventional rotor versus the HM Rotor.

ed cost savings for the mill of US $degree of defibering.

Fig. 3 is generated from amperage draw

28,000 per year (Fig. 5). The HM Rotor

measurements taken throughout individu-

defibered the pulp furnish to the same

In the second method, hand sheets were

al pulper batches. Both Figs. 2 and 3

degree as the conventional rotor without

made from all grab samples. Undefiberedshow that average energy demand wasadversely affecting fiber quality. This

material visible in the dried hand sheet

consistently reduced by approximately

project, partially funded by Wisconsin’s

was compared to the VSI to confirm the

25% after installing the HM Rotor. Note

Focus on Energy Program and Wisconsin

degree of defibering. Defibering indexes

that peak energy demand throughout the

Public Service verified that the HM

andpulper batch was reduced by 28%.

Repulper Rotor saves paper mills energy

consistency

measurements

were

and will significantly lower their operat-

made at millsite for all tested pulperbatches. In order to compare the impact

Fig. 4 shows that the HM Rotor providedof the rotors on the pulp fibers, freenessidentical defibering characteristics when

testing and length/fines distributions werecompared to the conventional rotor. Com-

performed on the 15 minute grab sample

parison of the results of freeness tests

at the lab of Voith in Appleton, Wisconsin.

and fiber length distributions showed noing costs.

Acknowledgement

appreciable differences between conven-

Focus on Energy, Wisconsin Public Ser vicetional rotor and HM rotor batches.

Corporation, Voith and the authors are
grateful to Wausau Paper for their permis-

Resultssion in presenting this article and to Tim

Conclusion

Hasbargen, Manager of Engineering, Utili-

The gaps between the rotor blade and extraction plate were measured to be within

The HM rotor required 25% less energy

ties and Environmental at Wausau Paper

tolerances set by Voith Paper for all test

than a conventional rotor to repulp identi-

for his assistance with this project.

4

Batch repulper defibering index
100% defibered

Conventional rotor

HM Rotor

Peak consumption [kW]

368

265

7

Average consumption [kW]

336

259

6

Batch cycle – fill, pulp, dump

5 Conventionalrotor
4 (Voith HOG)
3
HM Rotor
2

Motor operation [h/day]

20.8

20.8

kWh/day

6,989

5,387

kWh/year [350 days]

2,446,150

1,885,450

Voith Speck Index [VSI]

9
8

1
1

21/06

5

Summary of energy savings – batch repulper

2

3

4

5

6 7 8 9 10 11 12 13 14 15
Pulping time [mins]

kWh/year saved

560,700

Cost savings [USD]

28,035

Energy costs USD 0.05/kWh17Voith Paper – A perfect partner at any time
International Customer Conferenceon “Graphic Papers”: May 9 to 11, 2006 in Ulm
To meet graphic paper market demands today – ongoing
quality rises but continuous price reductions – a thoroughly dependable partner is indispensable.

Anja Lehmann
Marketing
Paper Machines Graphic
anja.lehmann@voith.com

At our customer conference from May 9 to
11, 2006 you will see what we mean by“Life Cycle Partnership” and why Voith
Paper is the right partner to help you
realize your company goals.

sium we will take you to a virtual andculinary trip past the milestones of papermaking history – from the beginnings in
China right into the future.

To keep you competitive in today’s toughmarket conditions, we support you withcustomized solutions over your entire
plant life cycle.

As another highlight, you can witness theinauguration of our new Paper Technology
Center (PTC) in Heidenheim on May 11.
Here you will see the world’s first paper
production line on a research unit scale.

Various case studies of trend-setting reference projects covering all paper machine life-cycle phases will be presented
at the Ulm congress center. In an outstanding evening program at this sympo-

If you would like to attend this highly interesting symposium, we shall be pleased
to send you full details if you fax us yourname and address to our service hotline
number: ++49 7321 37 7566.

21/06

18

A vision becomes reality –Online calendering of LWC offset/rotogravure
printing grades with high DIP content at LEIPA,
Schwedt
In recent years there has been a growing interest in online
coating for LWC offset and ULWC grades, including online calendering.

Michael Ganasinski
Finishingmichael.ganasinski@voith.com

Online calendering of LWC offset printing

Offline calendering is still widely pre-papers is also favoured by indirect coat-ferred. On the one hand for LWC rotogra-

ing (film coating), which stresses the web

vure grades, on the one hand because di-much less than direct coating (blade coat-rect blade coating is only possible offlineing). A drawback, however, of film coating

for good machine runnability. And on theis that although the paper is covered wellother hand, the high surface quality de-

and uniformly, the coating follows themands for these grades are more easily

surface contours and causes roughness.

fulfilled by offline calendering, using two

This effect is intensified by film splitting

to three low-speed calenders together

in the nip outlet.

with the offline coating machine.

Online Janus calendering results on average in PPS S10 roughness of ~1.3 to

The vision

1.8 μm and Hunter gloss values of 5060 %. Such values are well suited for off-

LWC calendering was debated in detail inset printing grades.

the twogether special edition “Systems of
Finishing” of October 2002. That article

One of the first trend-setting installations

closed with the following words:

in this connection was the small but ex-

21/06

cellent Voith PM 4 at Perlen Papier AG,“Particularly for LWC offset and ULWC

justifiably known as the PM 4 Pioneer.

production, there is a growing demand forThis was followed up later on with rebuilds

online machine concepts and online cal-at Madison/Alsip and Bowater/Catawba.

endering accordingly. Moreover with the

19Fig. 1: EcoSoft Delta.

current trend toward lower basis weights

1

and higher DIP content ... there is also a
growing interest in online calendering
concepts for rotogravure printing grades.”Hence three wishes were still unfulfilled
at that time:● Firstly, a further increase of DIP
content in online calendered LWC
offset grades;● Secondly, online calendering of LWC
rotogravure grades;● And thirdly, a high DIP content also
in online-calendered LWC rotogravure
grades.
Meanwhile all three of these wishes havebeen fulfilled, so it is worth taking a clos-

Spurred on by this initial success and the

The LEIPA PM 4 calendering

er look at the latest developments in LWC

high qualities attained, the partners fol-concept

online calendering. A good example islowed up their ambition of rotogravure

PM 4 at the LEIPA mill in Schwedt/Oder.

production even more keenly.

EcoSoft Delta pre-calendering
From the calendering point of view, theSo hardly three months after commission-

conditions for high quality LWC offset anding, the first rotogravure production tests

rotogravure paper production are estab-

were run on PM 4. After about anotherlished well before film coating. Normally

As a milestone in LWC production, LEIPA

three months, so much progress had been

the raw paper is very porous, so that the

Schwedt was the first mill ever to produce

made that after successful printing tests,

coating penetrates deeper. This not only

LWC from almost 100% recovered paper

LEIPA booked their first order for LWC

leads to poor surface covering, but also

completely online in such high quality thatrotogravure grades made from 85-90%

reduces gloss and smoothness. To solve

the product caught up with the primary fi-

recovered paper.

this problem, the LEIPA concept includes

The vision becomes reality!

ber based paper predominating until then.

pre-calendering with a 1x2 roll EcoSoft
That is how LEIPA finally made a paper-

Delta (Fig. 1) operating at line loads ofSince August 2004 LEIPA’s PM 4 has been

making dream come true in the first quar-

10 to 200 N/mm and feed temperatures

very successfully producing LWC offset

ter 2005. Not least thanks to Voith’s sup-up to 120 °C. This markedly reduces thegrades in the basis weight range 48 toport in coating and calendering technolo-

surface roughness prior to coating by

65 g/m 2 . But the people involved did not

gy with extensive testing and machinerysmoothing out the raw paper surface con-rest on their laurels by any means!

optimization, etc.

tour. The roughness after coating is,

21/06

20

Fig. 2: SpeedSizer.
Fig. 3: Schematic PM 4.
Fig. 4: Janus MK 2.

developed for this purpose, as well as

2

better accessibility. Furthermore, this kindof 45° design increases the correction
potential of the Nipcorect roll because
since roll deflection is only 2/3 in the nip
direction, therefore, only 2/3 has to becompensated by the Nipcorect roll.
Finishing on the Janus MK 2
After coating, the actual finishing at LEIPA
is done by means of a 10-roll Janus MK 2
calender. This ensures the right surface
characteristics both for offset and rotogravure printing (Table 1).
Already at the projecting stage, calendering test results clearly showed that antherefore, less, making the LWC paper

closed-loop Caltronic control system. At

8-roll Janus MK 2 calender would haveeasier to calender. The Janus MK 2 calen-

2-sigma thickness values of 0.4 to 0.6 μm,

been sufficient for offset quality. But

der then imparts it with higher gloss andthis ensures favourable conditions for theinspired by the vision of also producing

smoothness.

following process stages.

rotogravure qualities, we all decided – as

In parallel to pre-calendering, the thick-

Another pre-calendering highlight is theproperly” by installing a 10-roll Janus

ness cross-profile is also regulated effi-

45° arrangement of the EcoSoft calender

MK 2 on PM 4 right from the outset in-ciently. On the one hand this improves

rolls, a familiar Janus MK 2 feature. This

stead of using an 8-roll stack.

web runnability in the coating machine,

innovativeand on the other hand it also improves

forms with the two nips a delta, explains

Thanks to this decision, all the offset

the thickness profile of the end product.

its name “Delta”. Apart from practically

grades could now be produced under moreTo this purpose the EcoSoft Delta wasvibration-free design, it also facilitatesmoderate calendering conditions. As a re-fitted with a 48-zone Nipcorect roll withupward roll changing using the DeltaLocksult, the reduced calendering load pulses

papermaking colleagues – to “do the job

3

21/06

frame

arrangement,

which

21

4

not only extend the plastic roll cover life,
LWC (57 g/m2)
OffsetRotogravure

but also prevent blackening, which withlightly coated grades containing DIP always has to be regarded critically.
As another advantage, the Janus MK 2
had enough potential right from the be-

T1

Calendering
conditions on
the Janus MK 2

LWC (57 g/m2)
OffsetRotogravure

TAPPI gloss 75°

53 %

~ 59

In-going moisture

PPS S10 [μm]

~ 1.4

~ 1.10content [%]~8~9

Opacity [%]

~ 92

~ 91

Speed [m/min]to 1750

1650

Bulk [cm 3 /g]~ 0.90~ 0.87

Line load [N/mm]~320420-450

Blackening

~ 52

~ 56

Feed temperature [°C]120-180

150-220

ginning to produce LWC paper suitable forrotogravure printing. Due to the higher

to using the right calendering concept –able web transfer from the pre-dryer

gloss and smoothness required, calender-

the entire line had to be optimized for thegroup to the Sirius reel.

ing conditions are much more demanding

product in question. Every papermakerin this case (higher line loads and feed

faced with high DIP content knows how

Optimizing the coating process and thetemperatures). This is also reflected in a

gratifying it is to deliver a consistently

color composition was yet an other stephigher in-going moisture content.

excellent product despite wide fluctua-

which contributed to the success. Since

tions in recovered paper quality according

both of them critically affect the calen-

Table 2 shows the typical calendering

to origin, even if classified by grades.

dering results, they had to be adjusted

conditions at LEIPA for offset and rotogra-

Particular attention was paid here todifferently for producing offset or rotogra-

vure printing papers.

strength and wet strength with a high DIP

vure grades.

content, both of which drop more rapidly
Of course, this breakthrough in LWC roto-

than with primary fibers during remoist-

gravure papermaking was not solely due

ening in the coating process.

Selecting the right wire was also decisivefor optimal rotogravure paper quality.

The transfer system is also important inWhile wire marking initially affected prod-

this connection, because due to the highuct quality, this problem was solved after-

speeds and demanding stock characteris-wards by using Voith Paper Fabrics Print-

tics, a very sophisticated and finely ad-

Form HA anti-marking wires, here again

justed system of Fibron vacuum belts andensuring a good basis for efficient calen-ropes is required for stable and depend-dering.

21/06

T2

22

Voith keeps customers “Perfect Fit”
for the future –with custom-tailored rebuilds

To stay competitive in the paper industry these days,
quality, production and costs are decisive. A Voith rebuild will getyour machine back in form again. With modernization measurescustom-tailored to your goals, we can optimize your production line
performance and update it to the latest state of technology. Our“Perfect Fit” rebuild plan meets all market needs in this direction,and once again proves Voith’s exceptional competence.
Ingolf Cedra
Paper Machines Graphic
ingolf.cedra@voith.com

21/06

1

23

Fig. 1: Pictures speak louder than words:
Voith Paper’s “Perfect Fit” plan for customized
rebuilds and modernization.
Fig. 2: ProEfficiency, ProQuality, ProSpeed,
ProEnvironment – Voith has the right solution forreaching every rebuild goal – always a Perfect Fit!

Four good reasons for a rebuild

or more efficient and environment-friend-and modernization

ly production.

ProQuality
To keep up with competitors these days,
ongoing improvements are indispensable.

Today’s global paper and board industry
belongs to the very capital-intensive andAnd also to gain new market shares, for

ProEfficiency

example with a grade change, dependable

highly competitive branches. To upholdand strengthen your position or gain newHigher efficiency is the most frequentquality is the key criterion. From the cus-

market shares, you must save costs – forrebuild goal of all: especially for older

tomer‘s point of view, product quality

example with resources and raw materi-machines and those that already reached(e.g. with regard to printability) is theals – and make your machines more com-their speed limit, production efficiency in-most decisive reason for getting orders –petitive at the same time.

vestments are often the most profitable.

not only pricing.

The Voith ProEfficiency rebuild plan –The Voith “Perfect Fit” rebuild plan en-

covering the entire paper machine fromables papermakers worldwide to realize

wire section to roll wrapping – minimizes

individually

modernization

production interruptions and waste forand rebuild measures for every need –higher efficiency and production at rela-

There are two ways to keep paper ma-

whether for higher speed, better quality,

tively low investment cost.

chines operating cost-effectively despite

customized

ProSpeed2

ProEfficiency

ProQuality

ProSpeed

ProEnvironment
21/06

24

lower paper prices: either by a grade

mits and certificates are only issued if all

you with a Voith rebuild. We have beenchange, or by investing in a speed in-these requirements have been fulfilled.

partnering most papermakers worldwide
right from the beginning, and know theircrease. A higher operating speed soon

production processes inside out.

makes the machine profitable again by

ProEnvironment measures have unexpect-

reducing production costs to a competi-

ed potential: investments in appropriate

tive level.

rebuilds in good time not only will help toFurthermore, Voith has an independent

meet all the legal requirements, but will

expert group exclusively concerned withalso reduce your total costs, e.g. throughrebuild measures in the paper industry:

lower water and energy consumption.

Rebuilds@Voith.

ProEnvironment

Whatever your rebuild and modernization

Investments in environment-friendliness
are no longer merely voluntary: they are

Voith: your Life-Cycle Partner –goals – higher production, better quality,

often a matter of survival. Together withcomprehensive know-how also

higher speed, eco-efficiency, etc. – Voith

rising energy prices, the laws on noisewith rebuilds

rebuilds keep you fit for the future. Your
machine will stay profitable despite paper

emission, water and air pollution, CO 2
working conditions are

Our unsurpassed know-how covering theprice declines, market condition and envi-

getting tougher every day. Operating per-entire machine life-cycle also pays off forronmental legislation.

emissions and

21/06

25

1

Norske Skog Golbey –Upgrading the heart of the paper machine
PM 2 at the Norske Skog mill in Golbey France began
production in 1999. With a wire width of 10,300 mm it produced
335,000 tons per year. Today, the output of this machine is now
about 350,000 tons per year. In October 2005 Voith was entrustedwith rebuilding the former to improve product quality. The machine
went back on line after only six days.
Ulrich SchadPaper Machines Graphic
ulrich.schad@voith.com

Norske Skog –countries on five continents. Working ata printing paper giant

full production capacity, Norske Skog
could easily produce enough paper to en-

The Norwegian papermaking group Nor-circle the globe seven times each day

ske Skog is one of the world’s largest

with a paper strip 1.6 m wide!

producers of newsprint and magazine
grades, with market shares of 13% and

The Norske Skog’s Golbey mill, centrally

8% respectively in a global market withlocated in the French Vosges, is one ofThomas Rühl

60 million t.p.a capacity. Norske Skog has

the largest newsprint mills with 470 em-

Paper Machines Graphic
thomas.ruehl@voith.com

24 self-owned or shared mills in sixteen

ployees.

21/06

26

before rebuild

OlivierCoquetNorske Skog
Golbeyafter rebuild2“In order to minimize rebuild costs,

The rebuild – upgrading with

Voith‘s offer included retention of thethe latest technology

existing elements as far as possible.

● The individual ceramic blades on theexisting forming shoe were replacedby new composite plate covers using

A key criterion in our decision for thisIn October 2005 Norske Skog Golbey

optimized Voith geometry. Even at

rebuild was that according to investi-

placed an order with Voith to rebuild thethe highest hydraulic pressures andgation results, the solution accepted

SpeedFormer HS on PM 2 using latest

speeds, these ensure stable sheet

involves the least risks with regard to

Voith DuoFormer Technology. The goal

formation conditions over the entire

paper quality.

was to further enhance newsprint quality

machine width.

in order to keep ahead of increasingly● The two deflector blades on the top

From beginning to end, teamwork

stringent market demands. The rebuild

wire were removed and replaced with abetween Voith and Norske Skog Golbey

was completed in only six days while theunit comprising three loadable forming

was exemplary. Thanks to the punctual

mill was completely shut down.

blades and followed by a new wet suc-completion of this rebuild, there wastion box. Pressed against the forming

no delay in re-commissioning our paper

The main scope of the rebuild was theshoe, these forming blades help tomachine.

modification of blade elements in themake the sheet structure much more

sheet forming and drainage zone of thehomogenous by breaking down theFirst results show significantly better

former. Existing SpeedFormer elements

large fiber flocks. The wet suction box

formation (the Ambertec value has

were replaced with the latest DuoFormer

not only increases drainage capacity,

improved from 3.1 to 2.7), with noTQv technology components.

but also enables optimal two-sided-change in porosity level.”

The following modifications were made:ness control of the drainage and thus

21/06

27

Fig. 1: Norske Skog Golbey mill in France.
Fig. 2: Former before rebuild (above)and DuoFormer TQv after rebuild (below).
Fig. 3: Formation improvement with
DuoFormer TQv.

grading to DuoFormer TQv technology.
This eliminated any need for modifications to the forming roll, breast roll or
headbox and became the greatest advantage for this rebuild concept. In addition,
the existing forming shoe body could bereused. By replacing the individual ceramic blades with composite plate covers
and installing improved guide-plates on
the bottom of the forming shoe, it was
upgraded to a state-of-the-art sheet formation element.
All in all, the SpeedFormer rebuild on
Golbey PM 2 was an intelligent and costeffective concept optimized down to the3last detail – without having to make any
technological compromises.

influencing sheet surface quality

functioning of these forming blades is thethrough the interaction with the exist-

correct web consistency in the forming

ing bottom wire wet suction box.

blade area. There must be a liquid core

A resounding success:between the existing outer layers of the

15% better formation

Optimal sheet formation –web, i.e. the individual fibers with fillers

with minimal expenses

and fines must still be mobile. This

Thanks to the reliable and well-provenenables greater uniformity by systematic

DuoFormer TQv concept, Norske Skog

The main objective of this rebuild was torearrangement of the fibers and also al-

Golbey now has a state-of-the-art form-

enhance paper quality by significantly im-lows a better fillers and fines distribution.

ing unit with high stability and greater

proving uniformity of the sheet structure.

To ensure the right web consistency indrainage capacity. Only shortly after start-

For this purpose the existing SpeedFormer

the formation blade area, preliminaryup, paper quality at normal operating

was upgraded with Voith forming blade

drainage on the forming roll must be ad-

speed was considerably better. After atechnology. The main element is a unit

justed correctly. The main factors here

short optimizing phase, formation had im-with three forming blades that are pneu-

are the stock dewatering characteristic,

proved by 15% while retaining porosity atmatically loaded during operation against

the basis weight, and the machine oper-

the original level. The improvements inthe new composite plate covers installed

ating speed.

sheet quality have also brought significantly better printing results. Thanks toon the forming shoe. This generates highpressure pulses that break down the fiber

Based on the furnish drainage and thanks

exemplary

teamwork

between

Norskeflocks and make the sheet structure muchto the high operating speed, the existing

Skog Golbey and Voith this rebuild was amore uniform. Essential for the optimal

forming angle could be retained for up-

complete success.

21/06

28

1

Single NipcoFlex press technology –The cost-effective dryness guarantee
for woodfree grades
Some years ago test results showed that drainage in asingle shoe-press nip is adequate for about 50% dry content inwood-free grades at acceptable speeds. But at first there wereconsiderable doubts as to whether this technology could be appliedin practice. The biggest question was whether today’s paper quality
and moisture cross-profile requirements could be met with only onepress nip. For this reason the single-nip press concept was hardly

Dr. Georg Kleiser
Paper Machines Graphic
georg.kleiser@voith.com

considered for paper machine rebuilds, despite its very favorable
investment and operating costs. Only paper machines for moderate
speed and quality requirements were regarded as single-nip press
rebuild candidates.

21/06

29

Fig. 1: Single-NipcoFlex press on PM 18
at Mondi Business Paper SCP in Ruzomberok,
Slovakia.
Fig. 2: Dryness and moisture cross-profile
development after start-up with new felt.
Fig. 3: Water ejection behaviour at the nip outlet.
2

3

2

54

53

1.5

52

1
2 Sigma
0.5

51

50

2 Sigma [ % ]Solids [ % ]Solids123Time since start-up [days]

4

5

0

Amazing speed rises –Mondi Business Paper SCP

The main concern prior to this rebuilda rebuild dream comes true

twogether 18 reported in detail on thewas moisture cross-profile development

Ruzomberok PM 18 rebuild. By installingin a single-nip press, where the entire

By boldly using the Single NipcoFlex pressa Single NipcoFlex press, dry content af-

profile stability depends on only two felts

for two very demanding rebuild projects,

ter the press improved from 48% to 53%,

and no compensation is provided by addi-

Voith, therefore, set a benchmark. One ofand the design speed of 1,400 m/min was

tional nips. However the Single NipcoFlex

these rebuilds, on Ruzom berok PM 18 inattained only a few months after rebuild.

press in Ruzomberok here again delivered

Slovakia, brought a speed increase from

Meanwhile production speeds have stabi-

impressive results, with 2-sigma values

800 to 1,400 m/min. The other one waslized at more than 1,500 m/min, with aaround 0.3% measured directly after the

on Ledesma PM 1 (in Argentina) using

monthly average around 1,400 m/min.

press with run-in felts. Fig. 2 shows abagasse, a furnish very difficult to drain

The original speed increase goals havetypical start-up curve with new felts.

efficiently. Both machines produce copy

thus been exceeded considerably.
Overall, these results are comparable withpaper, PM 1 in Ledesma also produces
wood free uncoated grades in the basis

Paper quality in general has developed

those using conventional press concepts.

weight range 60 to 140 g/m 2 . These ma-favorably. With older rebuild projects, theFurthermore, there was no steam box forchines have now been operating for two

5% higher dry content now attained wascorrecting the moisture cross-profile. The

years since the rebuild, and the outcome

at the cost of substantially lower bulk.

felt service life of 21 days attained inof that decision – driven by the very fa-

Installing this Single NipcoFlex press,

Ruzomberok is less than with convention-

vorable investment and operating costs of

however, has hardly affected bulk at all.

al press concepts, but since only two feltsa Single Nipco Flex press – is very suc-

Likewise the 2-sided roughness differ-

are used, felting costs with the Single

cessful. This article explains why.

ence of less than 10% is an excellent val-

NipcoFlex press are nevertheless ex-ue for copy paper.

tremely favorable.

21/06

30

Fig. 4: Web run through theSingle NipcoFlex press.
Fig. 5: Relationship between bulk androughness with various press concepts.
Single NipcoFlex pressCenter roll press
4

5

Bulk [cm 3 /g]

1.5

Base paper Single-NipcoFlex press
dryness after press 53%

1.4
Base paper
center roll concept
dryness
after press 50%

1.3

1.2
0

100

200 300 400 500 600 700
Roughness [ml/min]Ledesma s.a.a.i.,(Fig. 3). The goal was to drain as much as

Drainage in the Single NipcoFlex press isFábrica de Papel

possible of the pressed-out water directly

much more bulk-retentive than in conven-

Likewise on Ledesma PM 1 in Argentina,

at the nip. Voith Paper was able to apply

tional presses. There are several reasons

installation of a Single NipcoFlex press

here years of experience with shoe press-

for this: firstly the high dry content en-significantly improved the dry content. As

es in the first nip of the Tandem NipcoFlex

ables high initial wet strength, which to-against 38% with two press nips prior topress (Fig. 4). The entire geometry, par-gether with the closed web run and high-rebuild, the dry content has now risen to

ticular of the drainage zone after the nip,

performance web stabilizer system in the

49% with only one nip. This dryness im-

was specifically adapted to single-nip

dryer section helps to minimize web

provement enabled a speed increase frompress conditions.

stress. This enables higher operating
speeds with less long-fiber content than

680 to over 900 m/min. Another notableeffect on this machine is the extremely

The key design components are:well above the norm for a single-nippress.

in conventional presses. As a result, thestrength-improving long-fibers can be re-long felt service life of more than 40 days,● An inclined press stack for optimal

placed with short fibers for greater bulk.

water drainage into the sump

Secondly, a bottom-felted straight-through● A FlexDoc drainage doctor on the shoepress is often used in conventional press

press, and a scraper on the mating roll

sections for 2-sidedness control. Above

The Single NipcoFlex press –to efficiently remove the entire water

all if the straight-through press follows

a logical innovationin the roll covers

immediately after a shoe press, this usu-

● A wiper bar on the bottom felt to
What are the decisive criteria that makeremove dragwater

ally causes loss of bulk without significantly increasing dry content. And last but

the Single NipcoFlex press so successful?

● Close spacing between sandwich sepa-

not least, the Single NipcoFlex press en-

First and foremost, Voith designed thisration and transfer in the dryer section,sures bulk-retentive drainage by avoidingpress for optimal drainage to ensure ideal

to prevent folds and runnability

the excessive pressure peaks occurring inconditioning of the felts and roll surfaces

problems.

conventional roll nips.

21/06

31

Fig. 6: Paper surface roughness development
over the felt life-cycle.
Top side
Bottom side
Fig. 7: Single NipcoFlex press references.

Due to the lack of a center press roll, theun-calendered

paper

from

rebuild measure for moderate speed in-

Success breeds successcreases for paper machines producing

single-nippresses is rougher than from conventional

In view of the promising results withcopy paper – has been considerably ex-presses. The higher roughness values are

Single NipcoFlex presses, Voith decided totended. Voith now prefers the Single Nipco-

accompanied however by higher bulk.

make this concept a core component ofFlex press for new installations as well as

After calendering, the bulk values arefurther paper machine rebuilds. Mondi

rebuilds for copy or wood-free uncoatedcomparable with those using conventional

Business Paper were so impressed withgrades at speeds up to 1,500 m/min.

press concepts, but the dry content isthis technology after the Ruzomberok

higher (Fig. 5).

PM 18 rebuild, that they decided to use

Preconditional for high production speeds

the same press concept again for Mere-is however adequate dewatering andWith regard to paper quality, the Single

bank PM 31. This machine, which likewise

strength potential of the furnish. For more

NipcoFlex press has an additional advan-

produces copying paper, went back on

demanding requirements, a Tandem Nipco-

tage. Due to the fact that the shoe-pressline in autumn 2005 after the rebuild. At

Flex press must be used.

nip is felted on both sides and uniformly

the same time another Single NipcoFlex

drainedpress went into service, in the USA.

in

both

directions, excellent

Application of the Single NipcoFlex press
for woodfree coated grades is also being

2-sided roughness values are attained(Fig. 6). For copy papers this is particu-

Both these machines reproduced the ex-investigated. The higher roughness of thelarly important as the 2-sidedness com-cellent results attained on Ruzomberok

base paper from the single-nip press

pensation potential is inadequate with

PM 18 with regard to dryness, runnability

is however a challenge with regard toconventional calenders because the line

and paper quality. Fig. 7 gives an over-coated paper surface requirements. By

forces are too low.

view of reference installations so far with

optimizing the felt design and pre-calen-

Single NipcoFlex press technology.

dering process, this application of the6

Roughness Bendtsen [ ml/min ]Singlepress

nevertheless

Meanwhile the original application win-seems feasible. Tests and development

dow of this press concept – mainly as awork are now underway accordingly.

PM

7

Wire width

Maximum production Start-up
speed (design)

Ruzomberok PM 18 Copy

7,300 mm1,400 m/min

September 2003

Ledesma PM 1

4,220 mm

1,000 m/min

May 2004

6,370 mm1,300 m/min

September 2005

Product

310
270

NipcoFlex

Copy
wf 60 -140 g/m 2

230
Merebank PM 31

Copy
wf 60 -100 g/m 2

190
150
One felt life

N.N. USA

wf 75 - 90 g/m 29,500 mm1,200 m/min

November 2005

Docelles PM 1

Copy

4,350 mm1,200 m/min

August 2006

wf 60 -160 g/m 2

21/06

32

Voith Drive –Small is beautiful; the innovative drive solution
for a more economical paper production
Voith Drive is an innovative drive concept for paper machines, which offers numerous advantages for the paper production
process. The paper production process has always been highly
energy-intensive because the moist paper web has to be drained,
pressed and dried within seconds. With steadily increasing energy
costs all possible energy savings potentials should be utilized tomake paper production more economical and to be able to stand up
Diethelm Beisiegel
Paper Machines Graphic
diethelm.beisiegel@voith.com

to the cost pressure. With Voith Drive, paper producers come far
closer to meeting their demand for energy-saving paper production.

At production speeds of up to 2,000 meters per minute the paper web is led overa large number of rolls, which have to be
driven by powerful motors. Traditionally,
the transmission of power to the rolls
takes place with the aid of drive elements, such as universal-joint shafts,
gear units and couplings.

Voith Drive is simply slipped onto the rolljournals – and this not only on the driveside of the paper machine, as is the casewith the traditional drive. Voith Drive canalso be installed on the tender side. This
results in flexible installation concepts,
making Voith Drive ideally suited also forrebuilds. It can be installed with little installation work within short rebuild times.
Voith Drive is universally applicable andprovides the necessary drive dynamics on
all paper and spreader rolls, in the dryer
section, calender and reel section, and on
the rope drives.

Voith Drive is the drive solution of the
future, as it meets the required propertiesof a modern drive, with the omission of allof the drive elements that have beenrequired up to now. Through the compact
shape of the Voith Drive the space requirement in the paper machine building
is drastically reduced (Figs. 2 and 3).

1

The Voith Drive motors are temperature
controlled via a closed water cycle with
upstream dirt filter and delivery pump.
2

21/06

3

33

Fig. 1: Voith Drive.
Fig. 2: Traditional drive with frame-mounted gearing, universal-joint shaft, gear unit, coupling (red).
Fig. 3: Voith Drive (blue).
Fig. 4: Compact design, simple installation.
Fig. 5: Energy savings potential.
Fig. 6: LEIPA-Schwedt PM 4, Janus MK 2 calender.

That leads to high power densities. Even
continuous operation at crawl speeds is,therefore, possible without any problems(Fig. 4).
Through the omission of the gear units
and frame-mounted gearing, overall efficiency will be up to 5 per cent higher with
the Voith Drive, reducing, therefore, energy consumption of the paper machineconsiderably. But it is not only the energy
costs that can be reduced by the use of
the Voith Drive. The operating costs formaintenance and warehousing also go
down, as wear-intensive gear wheels become a thing of the past and the stockingof spare parts can be optimized by theomission of the mechanical drive elements (Fig. 5).
From a cost aspect, the Voith Drive is,therefore, the right choice. In addition,
environmental aspects and working environment for the operating personnel on
the paper machine will also see distinct
advantages.
Through oil lubrication of the gear wheelson traditional drives, especially on older
paper machines, there were frequently
undesired losses of oil, which led to con-

Roll

+ Motortamination on the paper machine framing.
As Voith Drive dispenses with gear
wheels, oil lubrication is not required andthe problem of oil leakages is eliminated.
Not only are, therefore, the costs for highoil consumption saved, but the environmen tal balance of the paper machine is
improved.
Besides this environmental aspect, Voith
Drive also offers distinct advantages forthe operating personnel on the paper
machine. In the paper machine building
the workers are exposed to considerable
noise pollution. Due to the backlash-freetransmission of power without mechanicaldrive elements, Voith Drive provides improved paper machine runnability, and thenoise level in the paper machine building
is significantly reduced.

4= Voith Drive

Voith Drive will convince you by its excellent references. The drive concept runs
successfully in many paper machines,
coating machines and re-reelers worldwide since the year 2000, and more than
300 Voith Drive motors have been sold todate. For example, 30 Voith Drive motorsof different size on LEIPA-Schwedt PM 4
provide the necessary drive dynamics andincrease the overall efficiency of thisultramodern LWC production line (Fig. 6).
To summarize: from an economy point ofview, Voith Drive is the drive solution of
the future and has proven successful
worldwide in commercial operation.

Further information is available at:www.voithdrive.voithpaper.de

5

6
95 %

5% Energy savings

Voith Drive motor
100 kW
4,750 Nm
200 rpm
Voith Drive

Asynchronous motor and gear
100 kW
1,450 rpm
Motor efficiency: 94 %Gear efficiency: 96 %Over-all efficiency: 90 %Asynchronous motor
and gear90 %Over-all efficiency: 95 %5 kW · 8,550 h/y = 42,750 kWh/y

21/06

34

1

RollMaster –new possibilities for optimizing andtroubleshooting reeling systems
Changes in the paper production process and increased
demands in quality and efficiency in the last few years have had
an impact on reeling systems. Thanks to improvements in process
technology, the existing offline finishing processes (coating,calendering) can be performed online, which means the numberof machine-wide reeling systems can be reduced considerably.
Modern reeling systems, such as the Sirius, are industry standard
Dr. Jörg Maurer

today (Fig. 1).

Paper Machines Graphic
joerg.maurer@voith.com

At the same time, changed paper characteristics, such as
reduced smoothness, combined with higher machine speeds have
reduced wind-up capability. Increased density as well as larger
parent roll diameters have resulted in a considerable increase in thepaper load on the parent roll core. Combined with the increase in
the number of layers, there is a greater probability of layer displacements (winding defects). The total amount of reject per day can be
Josef Wigand

minimized by reducing the number of reeling systems and with

Automation
josef.wigand@voith.com

improved machine concepts.

21/06

35

Fig. 1: Modern reeling systems, such as the
Sirius, are industry standard today.
Fig. 2: Reeling parameters.
Fig. 3: Data from the quality control system.
2

web tension

lineforce

RollMaster –system are recorded and presented to-the optimization tool

gether on a single platform:● Parent roll data (density, diameter,

To make the machine’s process cycle
more transparent, an analysis tool isneeded for lasting control of the various
winding and process parameters as well
as of changes. For this reason, Voith has

linear footage)● Drives (torques, speeds, tension
regulators)● Linear load system (pressures,
positions, angles)

centertorque● Binary signals for monitoring thesequences.
In addition to the pure machine control
data, process-relevant data, such as statistical variables (loss times, production
quantities) and quality data are also recorded. Fig. 3 shows data from the quality control system.

developed the RollMaster, an automation

3

tool for analysis and measurement of allparameters that influence winding quality.
RollMaster is not only used for machinewide reels (paper or coating machines,
re-reelers), but also on winders. The system can also be easily added to existingmachines.
Functions
The quality on the reel is influenced byvarious parameters. On the RollMaster,
the reeling parameters of linear load,
center torque and web tension (Fig. 2)
are specified as freely programmable reference curves over the diameter.
A special feature of the system is that all
relevant data for operating the reeling

21/06

36

Fig. 4: Winding parameters/set-point curves.

Operational experience4

Remote access
All functions (operation, parameter setting, installation) can be controlled via
remote access. Disturbances can be analyzed from the Voith company location
using remote data transmission. Fast VPN
connections help to simplify remote diagnosis. There is no difference visible inspeed between the loading and build-up
time of the images on the machine computer and on the computers connected via
remote data transmission. An advantageof remote access is the fact that theappropriate specialists can be brought infor troubleshooting and problem solving
for each area.
Start-up
In addition to the data measured via sensors in the peripheral field, information● time-dependent (high-resolution in the

The paper machine and drive components,
including controls etc. are often supplied

millisecond area).

from other systems is used as well (e.g.

The system’s reeling results are docu-

by different manufacturers. In case ofdrive control or quality control system).

mented completely at all times over many

reeling problems at machine start-up,

Overall, around 300 channels are avail-years. If a disturbance occurs, it makes

trouble shooting is, therefore, rather timeable for data recording. If needed, an

troubleshooting

muchconsuming and faults are difficult toalarm can be issued via limit value moni-easier for the various problems that canlocate. It often results in personnel-inten-

toring. The data are recorded in real time.

occur on a reeling system.

sive and costly visits after machine start-

correspondingly

up, especially with regard to the automat-

Only the signals from the process control
Operation

ic turnup sequence. RollMaster as a diag-

Visualization in the RollMaster takes placenosis tools makes it possible to track

Apart from online visualization, all data

via multi-window technology. Drag-and-defects quickly. The high-speed-recording

measured of each parent roll are stored indrop functions support operation, includ-function of the RollMaster allows thetwo ways:

ing preparation of freely configurable set-monitoring of details in drive control and● layer-dependent (measurements arepoint curves (Fig. 4). The individual steps,

implement optimization measures imme-

determined through a configurable

operation and analysis possibilities candiately as long as the corresponding tech-

number of layers, typically 10-30) andbe recorded intuitively.

nical personnel is on site.

system are delayed by their cycle time.

21/06

37

Fig. 5: Time recorder – binary signals.
Fig. 6: Measurement history – traceabilityof changes in the process.
5

6

Optimization and trouble-

high resolution also makes it possible tomizes the probability of an incorrect pa-

shooting

analyze higher frequency oscillations (e.g.

rameter selection. Storage of all this data

The high-resolution measurement andhydraulic, drives). Both signal types (ana-over a long period of time ensures thedata storage provide various opportunities

logue and binary) can be depicted togeth-build-up of winding-related technologicalfor the RollMaster user that are not pos-er on a diagram.

know-how.

sible to the same extent with other systems.

Free channels in the system can be used
for any desired signals (also from other

The real-time recording and storage ofmachine sections). All channels can bebinary signals of the sequence control

freely configured and their parameters set

permit diagnosis and control when chang-(signal name, unit and range). When wind-es occur in the sequence. Fig. 5 shows

ing problems occur, the availability ofHigher technological demands and antime recorder – binary signals. In thismachine data and data from the quality

increased consciousness of efficiencies

way, effects such as flickering signals cancontrol system on one platform makes aensure a growing importance for control

be discovered.

simpler correlation between problems inof winding parameters and diagnosis onmachine control and in the paper profile

reeling systems. With the RollMaster, thepossible.

paper maker is able to use the winding

Also, by the real-time recording of ana-

Summary

parameters that are optimized for the de-logue signals (Fig. 6 shows measurement
history – tracing changes in the process),

The automatic grade-dependent specifi-

mands of the respective paper grade andeffects can be analyzed that are lost in

cation of reference curves ensures thecan also minimize machine downtime

the resolution of DCS trends, such ascorrect selection of machine parameters

during disturbances and changes within

drops in web tension during turnup. The

for optimal winding hardness and mini-

the production process.

21/06

38

Voith Paper Rolls Division –Your fast, flexible and reliable partneraround the roll

Voith has always been a partner to the worldwide paperindustry with technical innovations, high-performance components
and comprehensive know-how. As one of the seven interlinked
Voith Paper Divisions, Voith Paper Rolls is the world’s leadingroll technology specialist for all papermaking needs, whether forgraphic and specialty grades, tissue, or board and packaging
papers. But what exactly is a roll technology specialist? We asked
Andreas Endters, Executive Vice President of the Voith Paper Rolls
Division, to explain this in more detail.

Division HeadAndreas Endters
Executive Vice President
Voith Paper Rolls

What does Voith Paper Rolls have to offer

designed and manufactured for each indi-

the paper industry?

vidual application, taking into accountthe latest developments and operating

Andreas Endters: Voith Paper Rolls sup-conditions of both new machines andplies the paper industry with all types ofrebuilds. We also optimize existing rolls

rolls, high-performance covers and coat-to enhance machine efficiency and reduce

ings. We are able to provide comprehen-maintenance costs.

sive Tissue Cylinder Service and rollservices in our worldwide service centers

What benefits do roll cover and coating

or in the mills, directly on the paper

innovations provide the customer?

machine.
Andreas Endters: Voith Paper Rolls covDoes Voith Paper Rolls manufacture

er and coating innovations set bench-and supply rolls for all kinds of paper

marks for all applications, bringing im-

machines?

provements in all sections of the paper
machine. These improvements include, for

21/06

Andreas Endters: Certainly. We produce

example, better sheet release and lower

suction and press rolls, guide rolls, dryer

draws, together with better and more uni-cylinders and reel spools for every type ofform drainage. Coating and sizing aremachine. All of our new rolls are optimallytherefore more uniform, and calendering

39

results are optimal. None of these im-Andreas Endters: I’m glad you men-

speed are of absolute priority at every

provements would be possible without

tioned that. VRG is a revolutionary innova-

single one of them, as well as at all of ourperfectly tailored roll cover technology.

tion,

on-site assignments – 24 hours a day,substantially

improving

grinding

quality with minimal material removal. It

365 days a year.

Our innovations for the paper industry arealso enables considerable cost savings byonly possible thanks to interdivisional

reducing shut-down times up to 30%. The

teamwork among the Voith Paper develop-

Tissue Cylinder Service does not only in-ment engineers, technologists and ex-

volve grinding the tissue creping andAndreas Endters: The Voith Paper Rolls

perts. A good example of this fruitfulsmoothing cylinders, but it also includes

team of experienced specialists can over-teamwork is our new Solar generation of

inspections and diagnoses, repairs andhaul and rebuild all rolls independent ofpolyurethane covers for press and suction

coating with the latest technology. All of

manufacturer or type. Our on-site fieldpress rolls.

which is done by experienced specialists

service covers fast and reliable roll

who are thoroughly familiar with the strictchanges, repairs right on the paper ma-pressure-vessel safety regulations.

chine, dryer cylinder grinding and coating,

Another Voith Paper Rolls innovation

as well as the mechanical treatment ofis the Virtual Reference Grinding “VRG”
technology. The VRG was developed

What do these service centers offer?

Does Voith Paper Rolls operate globally?

entire dryer sections including balancing.

together with the Fraunhofer Instituteand has just been awarded the Fraun-

Andreas Endters: Of course! We havehofer Research Prize. Can you tell us

26 Voith Paper Rolls service centers

Many thanks for this interesting interview,

more about this development?

worldwide.

Mr. Endters.

Reliability,

flexibility

and

21/06

40

Voith Paper Rolls Launches the Latest Generationof Polyurethane Covers
Voith Paper Rolls, the unsurpassed leader in polyurethaneroll cover technology, has introduced Solar, a new generation ofsuperior polyurethane roll covers. Solar series covers have enhanced properties over previous generations of polyurethane rollcovers and can show clear benefits for papermakers.

Paul McCarten
Rolls
paul.mccarten@voith.com

Roll covers serve many purposes in thepress section of a paper machine. Alongwith corrosion protection of the shell andan economical, renewable surface, rollcovers have the capability of providing amore uniform nip pressure (compared tometals) when confronted with local variations in sheet thickness and felt compression, and have less sensitivity to crownerrors. Additionally, covers may allow
higher loads (and higher impulse anddwell time) with the same peak pressure.
In order to effectively perform their function, roll covers need to have high abrasion resistance, hardness stability anddurable bonding. High performance polyurethane roll covers meet these requirements. Their combination of abrasion re-

21/06

sistance, toughness and durability makethem the cover of choice for press andsuction press rolls on demanding paper
machines.
Voith Paper Rolls has been the undisputed
leader in polyurethane cover technology
since the advent of the use of polyurethane covers on paper machine applications. Continuing endeavors by Voith’s Research and Development engineers, scientists and technologists have produced
generations of polyurethane products,
each with enhancements on the past. Today G2000, Aqualis, PolyDyne and PolyMax are the industry standards for demanding applications on press, suction
press and film press roll positions.

41

Fig. 1: Tear strength retention.
Fig. 2: Abrasion resistance of cover materials.
Fig. 3: Material hysteresis.

The Solar series, SolarPress for pressrolls and SolarFlow for suction press rolls
builds on this legacy of technological innovation. The Solar series covers havebeen designed for demanding pressing
applications and have superior properties
compared to other polyurethane products.
These improvements have been demonstrated in field trials on many applications, both in Europe and in North America.

tion or size press, polyurethane covers
absorb water. Depending on the temperature of the application and chemicals being used, there can be softening of theroll cover. Laboratory testing of Solar has
demonstrated its superior resistance tohydrolysis compared to previously available products. Fig. 1 shows the change inultimate tensile strength of a number of
10 P&J polyurethane press roll compounds with exposure to hot water. The
superior hydrolytic resistance of the Solar
polyurethane top stock is readily apparent. It maintains its strength and toughness in an environment where other products degrade and weaken substantially.

Solar combines a superior polyurethane
top stock with Voith’s proprietary AST
bonding system to produce a cover withunrivaled performance, reliability and durability. The unrivaled hydrolytic stability
and durability of the AST bonding system
has been established over a number ofyears. Many mills that had gone to uncovered stainless steel suction rolls due tofailures of conventional polyurethanes in
the past have re-covered their rolls with
Aqualis due to the outstanding durabilityof the AST system.

130
Premium Polyurethan

20
10

3

0.16

2
1

0

5

10

15
Days

20

25

30

0.12
0.08
0.04

0

0

3
0.20

tan ␦ [t]PolyDyne24Volume loss [%]Tear strength [N/mm 2 ]40

For elastomeric covers on paper machinepress sections, the behavior of the material under cyclic loading is critical. As thecover is compressed and relaxed going
through the nip, part of this compression
work is converted into heat inside thecover. The lower the hysteresis of thecover material (typically measured instrumentally as tan ␦) the lower the energy
absorbed and converted to heat and theSolar also has high abrasion resistanceand, due to its high hydrolytic stability,
maintains this abrasion resistance overtime. Fig. 2 shows the abrasion resistance of Solar at 15 P&J along with someother materials. Not only is Solar superior

60
New Polyurethan

The superior cover material results in enhanced performance on a multitude of
paper machine applications. On pressrolls, the superior toughness and hydrolytic stability allows configuring of new,more open surface drill patterns for improved water removal. The Solar series’
high abrasion resistance results in a cover that maintains its profile and minimizes
groove wear and hole cupping, thus providing consistent, efficient dewatering
capabilities during extended runtimes.
Papermakers see superior performance ofthe cover from the day it is installed in
the machine and performance is maintained through the whole running time.

This superior material stability results ina cover with minimal softening and excellent resistance to groove closure whenrunning in a paper machine. The cover
maintains its properties during its time in
the machine resulting in optimal performance through the entire running time.

Some of the properties where Solar shows
even further improvements over previous
covers include hydrolytic stability anddynamic performance. In the hot, wet environment of a paper machine press sec-50

to the latest generations of super abrasion-resistant rubber covers, it is alsosuperior to premium polyurethane covers.

New
Polyurethan

Premium
Polyurethan

Super
Premium
RubberPremium
Rubber0-100 -50

Premium
Polyurethan
New
Polyurethan
050100Temperature [°C]

150 200

21/06

42

Fig. 4: A SolarFlow cover on a suction press roll.
Fig. 5: Inspecting a SolarFlow cover.

cooler the cover will run. Materials withtoo high a hysteresis will fail on highload, high speed applications.
As can be seen on Fig. 3 Solar has, compared to other polyurethanes, superior
dynamic properties. Solar approaches the
dynamic performance of G2000 also at
higher P&J values. The benefits of thesesuperior dynamic properties have beenrealized in a number of ways. Solar covers are running very successfully inhydraulic-load demanding positions ingraphic paper machines as well as inpackaging paper machines, in some
applications even without cooling water.
Customers expect significant benefits
from Solar on a wide variety of applications including, among others, grooved
press rolls and blind drilled and grooved
press rolls on graphic paper machinesand blind drilled press rolls on packaging
paper machines and on pulp machines.
The improvements can be illustrated witha couple of examples.

4

SolarPress, the new press rollcover

SolarFlow, the new suction
press roll cover

A linerboard producer in the Northern U.S.
had a history of cover failures on a highly
loaded press (“LNP’s”), one of the mostdemanding positions on paper machines.
Covers on these positions are prone to
failure. The typical failure at the mill inquestion occurred as the rubber covers in
use wore down. Non-uniform wear would
result in a localized increase in line loadsuch that delaminations of the top stock
would occur.

Due to the chemical environment as wellas high steam levels, a testliner producerin Austria experienced severe wear on
conventional blind drilled grooved polyurethane suction roll covers (less than
4 months running time). Aqualis provided
an improvement in run times (6 months
on machine).

The superior properties of SolarPress allowed the covers to be installed in theapplication without requiring cooling water. Polyurethane covers have now been
installed in both positions in the press
and are running well with the water cooling turned off, providing considerable costsavings for the customer.

Only SolarFlow could achieve the expectations of more than 12 months on machine. After the prolonged running time
the surface appearance was better thancompetitive covers after 2 months on machine!
At Voith Paper we continuously use ourprocess know-how and Research and Development to bring innovative new products to market. The Solar series of polyurethane covers is our newest productline to meet the increased performancerequirements of our customers.

5

21/06

Release force [N]Release force [N]80400Piko FEP Test PFA Test Test Trad. CastClean
3 on- iron
1 Teflon 2
NG
site
1

60
30
0
PikoClean
NG
0 WS

Test
1

Test
2

2 WS

120

120
Release force [N]

90

120

Release force [N]

43

40
0
PikoClean Test Trad.
NG1
on-siteTrad.
on-site
4 WS

2

80

0 ds

Test
2

80
40
0
PikoClean Test Test Trad. Test Test
NG
1
2 on-site 3
4

Test
3

1d

3

0 WS

2 WS

4 WS

4

PikoTeknik developed next generation
non-stick roll coating
PikoTeknik Oy, a member of the Voith Paper Rolls group has
introduced a next generation on-site coating solution, which wasdeveloped in cooperation with technology specialists of the industry
to solve dirt problems in the drying section of the paper machine.
“The new PikoClean NG, which is the result of several years of
research, is the first coating applied with the HVOF method at thecustomer’s facilities that shows the best non-stick and release
Ingmar Vesterlund

characteristics even without oven treatment”, says PikoTeknik Oy.

Rolls
ingmar.vesterlund@pikoteknik.com

The extraordinary chemical, corrosion andCooperation between research

PikoClean NG was a clear test winner inheat resistance of the doctorable Piko-and industry

the tape test that measured the release

Clean NG coating was proven in thoroughParticipants in the research and develop-

force (Fig. 1), the heat transfer test

laboratory tests and under actual produc-

ment project for PikoClean NG were the(Fig. 2), the sulphuric acid test (Fig. 3)

tion conditions. The main areas of usage

Fibre and Particle Engineering Laboratory

and the TMP test (Fig. 4) that measuredof the coating are dryers and cooling cyl-of the University of Oulu, Tampere Univer-the operational function under conditionsinders as well as guide rolls.

sity of Technology, Finnish paper mills

favourable to the growth of microbes.

and Voith.
Thanks to the state-of-the-art products

The product development of PikoClean NG
is the result of the recent enormous prog-

The multiphase research project involved

and methods PikoTeknik has grown quick-ress in material technology. With the help

the analysis of the adhesion of different

ly into a global company. PikoClean coat-of the new generation coating PikoTeknik

types of deposits and the comparison ofings on drying cylinders are already stan-is now able to combine improved charac-different coating material options by mea-

dard in the new Voith paper machines.

teristics with higher speed and flexibility

suring their release forces and testingIn addition to coatings applied to paperof on-site coating.

their release functions, wear, corrosion

machine cylinders and rolls at the cus-

and chemical resistance and heat transfer

tomer’s facilities PikoTeknik offers drill-

characteristics in conditions correspond-

ing, machining, measuring and balancing

Fig. 1: Release force.

ing to actual machine conditions. New

services on-site in the paper machine as

Fig. 2: Heat transfer test.

research and measuring methods were

well as at their Service Center in Parha-

developed for the project, which enhanced

lahti near Pyhäjoki.

Fig. 3: Sulphuric acid test.
Fig. 4: TMP test.

the comparison of existing and new coating materials.

21/06

44

Endura series –Hard coatings for Yankee and MG Cylinders
Hard coatings preserve Yankee and MG Cylinders and prolong their service life. Furthermore, coated cylinders can improve
paper quality. To these ends Voith Paper Rolls has developed theEndura series of tailored dryer cylinder coatings to meet the risingdemands of the paper industry.

Uwe Becker
Rolls
uwe.becker@voith.com

Voith Paper Rolls can offer a suitable

on a standardized facility enabling a wide

coating system for every application:variety of test conditions as near as pos-EndurAll – the optimal surface

sible to those on the paper machine incoating for tissue creping cylinders

question. Local machining of the hard

Endura MG – the optimal surfacecylinder surface is also investigated andcoating for MG cylinders

optimized, as well as its compatibility
with the specific papermaking process inPrior to market launch all new Voith Paper

each case.

Rolls coatings undergo extensive testing,Fig. 1: Endura application process.
Fig. 2: Endura MG.

21/06

particularly for wear resistance on a spe-

Voith Paper Rolls service specialists apply

cially developed test facility. To ensure

these coatings exclusively on site at therealistic test conditions, a doctor runs

paper mill. To this purpose they take withagainst the coating at a line force, whichthem a grinding machine, sandblasting

can be increased up to ten times the nor-and coating equipment, weighing about

mal load. Corrosion resistance is tested

30 tons in total.

45

2

The overall application process – pre-These coatings not only increase the ser-pressure according to wall thickness, as agrinding, sandblasting, coating and final

vice life of creping and MG cylinders, butfunction of external loading (such as line

grinding – takes 5 to 6 days for EndurAllalso can significantly improve paper ma-

force applied by the press rolls). Sincecoatings and 7 to 10 days for Endura MG

chine runnability and product quality.

the cylinder wall thickness is reduced every time it is reground, the admissible

coatings.

steam pressure reduces accordingly.
Optimal surface roughness is indispens-

Coatings pay off for the user,able for consistently high tissue creping

because...

Cylinder wall thickness reduction is notnecessarily a drawback, however, because

quality. EndurAll coatings are finished toan Ra value of 0.4 to 0.6 μm, which, com-

Creping and MG cylinders are extremely

thinner cylinder walls make for better

bined with an ideal crowning curve andhigh stressed paper machine components

heat transfer and improve the cylinder’s

optimized organic cover material, ensures– on the one hand high thermal strain

drying performance. Nevertheless, there

improved tissue quality. Another benefit isthrough internal steam pressure and drier

are limits to drying performance improve-considerably extended doctor blade life,

hoods, and on the other hand mechanicalment by thinner cylinder walls. Voith

resulting in additional cost savings.

strain by press rolls and doctor abrasion.

Paper Rolls can calculate the optimal dry-The cylinder surfaces, therefore, have toing performance, which is generally at a

Tissue machine re-start can be super-

be reground whenever necessary, at thewall thickness of about 3 to 4 mm more

vised by an experienced Voith engineer,same time restoring the crowning andthan the minimal wall thickness at which

who, at the same time, optimally adjusts

concentricity to a tolerance of 0.02 mm.

the cylinder has to be decommissioned.

the production parameters to suit the new

The normal grinding intervals are 12 toroll surface characteristics. Under optimal

24 months for creping cylinders and 10 toYankee dryers are delivered with a grind-conditions the new surface coating will

20 years for MG cylinders.

ing allowance of 12 to 15 mm, so thatthey last about 30 years. Instead of re-

not require any re-grinding for several
years, thanks to its extremely high wear

The cylinders are mainly used for drying

placing them with a new cylinder, they

resistance.

paper or board and are heated from with-can be resurfaced to make them lastin by steam at a pressure of up to 10 bar.

much longer. Voith Paper Rolls recom-

Likewise MG cylinders require optimal

They are, therefore, subject to pressure

mends this coating procedure as soon as

surface roughness to attain high paper

vessel regulations, i.e. they have to be of-the optimal drying performance has beengloss and smoothness. The normal castficially inspected at regular intervals likereached.

surface quality can be ground down toan automobile. Their safety is checked

Yankee dryers is also recommended if

minimal Ra values of 0.1-0.2 μm. With

thereby, both visually and based on thetheir performance is negatively affected

Endura MG coating Ra values of 0.05 -admissible loading characteristics. The

by excessive porosity of the cast shell.

0.15 μm can be reached, thus improving

diagram, which indicates the Maximum

paper gloss and smoothness accordingly.

Allowable Working Pressure (MAWP) is

This hard and smooth surface coating

very important for the operational safety...resurfacing saves investment costs

retains consistently high Ra values overof the cylinder, because they directly indi-by making Yankee dryers last muchits service life, which is extremely long.

cate the maximum admissible steam

longer!

Furthermore,resurfacing

of

21/06

46

1

2

3

Virtual Reference Grinding –Joseph von Fraunhofer Award 2005
Virtual Reference Grinding (VRG) is an innovative grinding
method to re-condition drying cylinders on-site and in-machine.
The VRG grinding was commercially introduced in early 2005 and,to date, sixteen large Yankee dryers have been serviced in-situ.

Sjaak Melkert
Rolls
sjaak.melkert@voith.com

VRG grinding technology is unique anda total staff of 12.500 scientists and en-

fundamentally different from conventional

gineers. Dr Ulrich Priber of the Fraunhofer

methods of roll and cylinder grinding.

Institute IWU in Chemnitz has spearhead-

Grinding is not accomplished through aed our VRG development from conception“geometrical-coupling” between grinder

to a functional system. The excellent workand roll or dryer, but through a “force-of Dr Ulrich Priber and his team has notcoupling”. Material is removed by apply-

only resulted in a practical and uniqueing grinding forces only exactly wheremachine tool, but has now also beennecessary (Fig. 1).

awarded the 2005 “Joseph von Fraunhofer” prize. The Fraunhofer Prize isAs a consequence, the VRG grinding

awarded to individual researchers or en-

machine is very compact but extremely

tire research groups at a Fraunhofer insti-

powerful, lightweight, and can be easilytute in recognition of excellent work inshipped and installed, saving consider-any field of applied research.

able down-time both to service the Yankee dryer and for diagnostic purposes

On October 19 2005, this 10,000 Euro

(Fig. 2).

prize was presented by the president of
the Fraunhofer Gesellschaft, Prof. Dr“My idea to develop a grinder on thisHans-Jörg Bullinger, to Dr Ulrich Priber

force-coupling principle was born inand his team during the annual meeting

1999. At that time, the German Fraunhoferof the general assembly (Fig. 3).

Institute was contracted to further develop this innovation into a practical techni-

We at Voith are extremely proud of thiscal solution.”

outcomeFig. 3: Dr Ulrich Priber.

21/06

congratulate

Dr

UlrichPriber, his team, and the Fraunhofer

Fig. 1: Virtual Reference Grinding (VRG).
Fig. 2: The VRG system.

andThe Fraunhofer Gesellschaft is the largest

Gesellschaft for their excellent work inapplied research organization in Germany

developing our ideas into this unique sys-

operating a total of 80 research units with

tem for the benefit of our customers.

47

Full steam ahead!
Steam technology – an importantpart of the drying process
The papermaking process is often marred by apparent
trivialities. Undetectable at first, steam pressures start to decline
and steam consumption rises, web dryness varies more and more,or condensate losses occur – slowly but surely, product quality
and earnings are seriously affected. In other words, steam andcondensate management can be equated to quality and cost management. To be on the safe side, keep your steam and condensate
Erich Willer
Paper Machines Graphic
erich.willer@voith.com

systems in optimal condition. With our comprehensive know-how,Voith Paper is your ideal partner for thoroughly optimizing every
single component.

What is steam technology all about? It

So what exactly is involved?

plays a key role in the drying process bytransferring water evaporation energy to

The drying process in a paper machine

the paper. As shown in Fig. 1, steam tech-

critically influences cost-effectiveness of

nology plays a central role.

the entire line. Poor steam and condensate management often reduces produc-

Steam technology begins at the shutoff

tion capacity and efficiency. And worst ofvalve of the steam supply line for the pa-

all: it often goes unnoticed. Optimization

per machine, and ends with the dry paper.
Inbetween is a collection of diverse comFig. 1: Segments of drying technologyA) Machine conceptB) ClothingC) Web transferD) Steam technology
E) AirhandlingF) AutomationG) System and process maintenance.

ponents and elements critical for efficient
operation. Voith Paper will optimize theentire system, or can implement improve-

A

B

C

D

E

F

G

ments step by step – even if it only means
to replace a single steam joint and appropriate siphon, for example.

1

21/06

48

3
0.8
0.6

rotary siphon
stationary siphon

0.4
0.2
0
600

800
1000
1200
PM speed in m/min

1400

Implementation
Required blow-through steam in %2

Required differential pressure in bar

Figs. 2 and 3: Key data of rotary and stationary
siphons.

40
30

rotary siphon
stationary siphon

Each optimization goal has its own solution. Apart from process simulation as

20

mentioned above, decades of experience10and a comprehensive range of proven and0600

dependable components – correctly se800
1000
1200
PM speed in m/min

1400

lected according to need – assure optimization of steam and condensate systems.
Voith has supplied stationary siphons forcan markedly improve production and en-mentation. A key role in determining im-

paper dryers for more than forty years.

ergy efficiency, and also reduce mainte-provement measures is played by the

Today,

simulation of this sub-process. Thanks toutilize stationary siphons. The benefits –years of experience, excellent compliancelower pressure differentials and, there-

Typical deficiencies in this connection are

between simulation and actual operation

fore, lower steam flows – are illustrated

as follows:

is achieved. Simulation results, therefore,

in Figs. 2 and 3. Rotary siphons areform a good basis for the optimization

however still available for special appli-

procedure.

cations.

● Excessive steam consumption

The optimization goals derived from these

The respective steam joints in modern● Web breaks due to picking

findings can vary widely, such as:

design, of suitable size and type, are an-nance costs.

● Reduced operating steam pressure

most

dryer

drainageprojects● Inadequate heat transfer● Non-uniform web dryness● Dryer cylinder flooding

other indispensable element for trouble● Lower steam pressures and drying

free operation. Alternative positioning of● Excessive steam to the heat exchanger

cylinder temperatures after the wet

the condensate removal, either on the● Condensate losses.

end or an application system, in order

drive side or the tender side, provides theto prevent web picking

possibility to control, based on systematic● Highest possible operating pressures,
Optimizatio n procedurein order to maximize evaporation

measures at the edge zones, the web
moisture at these positions.

● Improvement of the moisture crossIn order to identify weaknesses, bottlenecks and associated improvement potential, a comprehensive performance
audit is carried out on site. This mainly
focuses on the drying process, heat transfer from steam to web, drying cylindercondensate removal, and system instru-

21/06

profile● Automatic drainage to avoid floodingof drying cylinders● Lower steam consumption andThat is why sensitive drying systems inthis connection generally have about
2/3 of the siphons on the drive side andabout 1/3 on the tender side.

condensate losses● Lower maintenance expenses forindividual components.

To improve dryer heat transfer to the web
at operating speeds around 500 m/min or49

more, spoiler bars inside the cylinder are

In many cases siphon and steam joint

formance production center with global

very effective. They generate turbulence

replacement also provides the possibility

delivery service.

in the condensate film and thus reduce its

to install thermal insulation sleeves in theinsulating effect. Installed over the entire

journals to optimize bearing operation

A good many of our customers already

web width, they increase the overall dry-conditions – after all, we believe in total

take advantage of the optimization servi-

ing capacity of the cylinder. By systemati-

optimization!

ces described here, whether for medium

cally positioning these spoiler bars atto large paper machine rebuilds or for

specific points over the web width, theyspecific optimization in the steam tech-

can be used for optimizing the moisture

Our strengths and capacities

nology sector alone. You are welcome tojoin them!

cross-profile. They are pressed uniformly
by leaf springs against the cylinder wall,

With five locations around the world, ourand firmly held by radial retaining rings tostaff of experts is available to assist your

Whatever you need, your local contact

prevent displacement due to thermal ex-mill with improving the performance ofpartner will be pleased to help you. Or

pansion differential between the bars andyour dryer section. Equipment and com-

simply get in touch with one of the Voithcylinder.

ponents are manufactured at a high-per-

Paper centers – you’ll get our full attention!

Enthusiastic feedback from a satisfied
customer: “Carbon ring changing in notime at all – by one man alone!”

21/06

50

Paper Barring –Successful Optimization Through Systematic
Analyses of all Relevant Subsystems
Paper barring denotes a frequently occurring problem in paper
production, which again and again leads to damages to the production system,
to production obstacles as well as to massive paper quality losses. Often suchdamaged board and packaging papers can no longer be further processed orsold. Voith Paper has formed a product area called „Process Solutions“, which
intensively concentrates on this problem, among others. Specialists in this field
analyse the problem in close cooperation with the customer and successfully
Bernd Stibi

work out solutions to solve it.

Process Solutions
bernd.stibi@voith.com

What is understood by“Barring”?

Barring on rolls and paper machine clothing leads to increased mechanical vibrations in the installed machine elements
and in the building. The consequence of
this unusual stress is material fatigue,
which ultimately causes damages. Thisphenomenon occurs mostly on roll covers
and press felts, and, therefore, leads toincreased production line downtime andcosts.

Barring denotes a phenomenon that canbe seen as streaking in CD direction.
Generally it appears in regular spacing ina range from a few millimeters up to anumber of meters.
Barring can occur in different areas andon different components of the paper machine as well as in the paper produced:● Nip-forming rolls in press sections,size presses, calender stacks and offline calenders may be affected (Fig. 1)● Press felts in conventional roll presses
can display barring (Fig. 2)● The paper itself can be marked with
the CD streaks known as barring(Fig. 3).

1

2

21/06

We usually speak of paper barring when
streakiness is optically detectable as avariation in gloss or opacity or the homogeneity of the paper web is disturbed byparticular waviness or by regularly occurring blistering (Fig. 4).
Paper barring does not only causes problems in the paper machine (e.g. increased3

51

Fig. 1: Typical development of roll barring
on a press roll.
Fig. 2: Typical development of barring
on a press felt.
Fig. 3: External development of barringin the paper/paperboard.
Fig. 4: Flatness disturbances with partiallybarring-like development in the paper/paper board.
Cockling = Waviness + Blistering

number of sheet breaks, deterioration of
the paper profiles and the control quality)
but also disturbances in the succeeding
processing stages. With a correspondingly
strong development of paper barring, thepaper produced can no longer be usedbecause of its poor quality and must be
fed back to the internal preparation process. The barring phenomenon is particularly problematic in the paper, and thecauses are generally very diverse. The
causes can lay in all areas of the paper
machine, the approach flow system andthe building.
As a rule, visual web irregularities correlate with the profile parameters, such as
basis weight, formation, ash, moisture orcaliper.
Some of the mentioned profile parameters
have a significant influence on the development of web drying and the associatedshrinkage of the paper web. Particularly
on paper and board machines for multilayer products, this leads to a complex
problem-solving situation because of themultiplication of the possible fields ofcauses. It is, however, important to determine the correlating parameter as exactlyas possible in order to be able to narrow

down the area of causes and the transmission path into the paper web.

Necessity and form of the applied
analysis system
More complex than the recording of the
problem of paper barring is the analysisof the causes that lead to streaking. In
this respect, the influential factors mustbe, as early as possible, included in theplanning of the process analysis. Only inthis case the analysis will ultimately leadto the elimination of the paper barring.
An important prerequisite in the search
for a solution to the problem of paper
barring is, therefore, a systematic procedure in the examination of all the relevant
subsystems of paper production.
The close relationship of the possible
causes, therefore, requires not only theappropriate selection of the process variables to be measured but also a reasonable planning of the time sequence of the
production settings to be examined. This
is of major importance for a successful
analysis.

For a targeted and successful examination, the following formula, therefore, applies:
Time-coordinated examination and testing
program + Recording of all relevant process parameters = Systematic process
analysis.

An example
In the following typical example, a cause
analysis for the determination of paper
barring was carried out on testliner andon other grades for further technicalapplications in the building industry. The
analysis was done on an approx. 30-yearold paper machine with its own stock
preparation system for the production of
two-ply packaging paper.
The multiple modifications and optimisations of the production line carried out
during the many years of operation today
result in a production capacity that is far
higher than twice the original capacity
layout.
However, a waviness in CD direction(paper barring), visible to the naked eye,4

Cockling =Waviness +Blistering
21/06

52

Fig. 5: Typical example: Finding the cause of thepaper barring complained about.
Fig. 6: Examination steps of the process analysis
for finding the cause of „paper barring“.
Fig. 7: Condition measurement and analysis fordetermining the main influential variables on thepaper barring complained about.
Fig. 8: Examination steps for determining
concept-related bottlenecks.

In close cooperation with the papermakers and the technical office of the papermill, the actual situation was recorded.
On the basis of this, a tailor-made examination program was defined. All available
information were taken into account andconsidered in the analysis. This included:● Description of the problems from thepoint of view of the producers and further processors● Reports of analyses carried out so far
and the current result of the imple mentation of the recommendations● Status of modifications to the production system carried out up to now● Status of optimisations made up to
now in the mode of operation of the
production line
● The mill’s own production schedulingfor determination of the optimal point
in time for measurement analyses on
site.

5

impairs the high quality demands. Due tothe associated, non-uniform rewetting effects, which lead to problems particularly
during further processing, Voith Paper
Process Solutions were commissioned toperform a fundamental analysis of the
problem (Fig. 5).
The graphic shown in Fig. 6 describes thefundamental system of Voith Paper Process Solutions in the procedure for pinpointing the cause of the problem.

6

Problem determination
Test planning● On-site examination of the main influential
variables between paper barring andproduction system● Stock & paper sample analysis● Theoretical capacity & concept analysis ofstock preparation and approach flow parts

Evaluation of test results anddetermination of solutions

21/06

7

General condition analysis● Paper profile analysis on industrial paper
and testliner production● Gas content measurements● Stock consistency variation measurements● Rotational speed measurements● Pressure pulsation measurements● Checking of the function of the pulsation
damper● Vibration measurements
Analysis with special
test settings● Switch off top ply● Switch on mechanical deaeration system

In the described example, an examination
program was established, based on theexisting insights, for the clarification of
three focal points:
1. Determination of the main influential
variables on the paper barring complained
about, especially:● the differentiation of back ply and top
ply influence● the effect of existing periodic pressure
pulsations in the approach flow system● the influence of the throughputs at therelatively new back ply headbox● the influence of the well-known highgas contents.
2. Determination of concept-related bottlenecks in the● stock preparation system● white water system● capacity of the cleaner system● approach flow dilution system.

8

System examination and theoreticalconcept/capacity consideration● General process description● Examination of the subsystems andoptimisation potentials in the main stockline of the bottom ply stock preparation
system● Examination of the stock line for top ply
stock preparation● Examination of top ply approach flow system● Examination of bottom ply approach flow
system● Examination of approach flow dilution
system● Examination of process water system● Examination of reject & sludge treatment● Theoretical stock and water circulation
balance53

Fig. 9: Condition analysis of operation-related
influential variables with emphasis on the“wet-end chemical system”.
Fig. 10: Example from the optimisation recommen dation matrix after the performance of extensive measurements, analyses and calculations.
Fig. 11: Success with solving the problem bysystematic linkage of know-how.

● The principal cause of the waviness(paper barring) was related to the backply, including the corresponding approach flow system● Excessive gas contents and uncontrollable stock and water throughputs are
based on the faulty layout and adaptation of the cleaner system, the breaktank and the headbox operat ing point.

3. Determination of operation-related influences, especially in the area of:● chemical additives in the wet end.
Figs. 7 to 9 list the established detail examinations for the mentioned focal points
in detail.
The results acquired in the aforementioned typical example extend over a wide
range of optimisation possibilities. Overall, they are designed to achieve maximum success in solving the problems
with best economical deployment of theinvestment budget.

The described typical example underscores the importance of the close coordination between the system user and theanalysis specialists. The example of a determination of the cause and problem solution for paper barring shows the importance of the combination of specialised
knowledge in the field of systems diagnostics and the detailed knowledge of thepapermakers and machine engineers
about the operation of the machines andsystems to be examined.

The following table (Fig. 10) shows an
overview of the acquired results for thedescribed typical example. The examination, however, revealed two main problems:

9

Examination of chemical system● Defoamer● Retention agent● Sizing (ASA)● Cationic starch and surface starch● Fixing agent● Additional chemicals (used and not used)
Measurement and evaluationof the cycle values● Stock consistencies, freenesses, retentions,
air contents, fiber load, contaminants
Trials with dynamic filtration system● Effect and improvement potential of theretention agents● Interaction of the chemicals used on the
dewatering behaviour

10

As shown in Fig. 11, Voith Paper Process
Solutions offers the corresponding organisational service and the necessary knowhow of a system developer and supplierso that the optimum in finding and solving the problem is efficiently worked out.

11

Paper mill
Product and system user know-how
Voith Paper
Process and engineering know-how
Voith Paper Process Solutions
works out synergies!

Central problems
Bottom liner

Measures

Gas contents● Installation of a cleaning system with deaerationand closure of the reject channels● Raising the break tank level and installing a level
control● Relocating the mechanical deaeration pump
● Optimisation of the defoamer dosage● Stiffening of the pipe run between 1st stage
HC screen and PE tank
● Adaptation of the headbox inserts to the volume
flow● Checking of the headbox slice blade and of thedrainage elements for damage

1● Exchange of the breast roll and check for balance
and run out failures● Checking of the headbox slice blade and thedrainage elements for damages

2

Periodic basis weightvariations
CD profile optimisation

Top liner
Breast roll vibrations
CD profile optimisation

Priority

2
3

3

21/06

54

Computer Based Training (CBT) –interactive computer based training for the pulp
and paper industry
Nowadays paper and pulp mill control rooms and production lines are equipped with cutting-edge computing technologies.
These systems take over process control through pre-defined
strategies. To meet market requirements and productivity goals, afull understanding of how the numerous variables involved interact
is necessary. Voith has developed some very effective solutions inthis connection.
Vicente Albiach
EsteveVoith São Paulo, Brazil
vicente.esteve@voith.com

Jochen Schwalbe
Paper Machines Graphic
jochen.schwalbe@voith.com

Due to the growing complexity of automa-This is hardly possible with conventionaltion systems in new installations and thetraining methods, but computer based

high investments required, demands on

training enables the simulation of criticaloperator training are rising accordingly.

situations so that trainees immediately

Since operators play a key role in assur-

see the effects of their process interven-ing optimal production, they must undergo

tions. These animated computer simula-appropriate training on new or upgradedtions fully comply with practice, because

production lines before trial runs andthey are based on the same principles

commercial operation can start.

and programs and permit the same levelof interactivity that the new systems will

The result of this development is far

provide.

greater operator responsibility for the

21/06

production process. In order to avoid or

Conventionally, operator training in theminimize production faults or interrup-

pulp and paper industry is divided into

tions, and prevent fluctuations in the most

two sections: theoretical and practical.

important quality parameters, operators

Practical training (e.g. during the erection

must be in the position to reliably take in-and commissioning phases) has proved

dependent action.

much more effective than purely theoreti-

55

Fig. 1: CBT is the most effective teaching toolfor virtual on-the-job training.

cal training with the same content. The

1

Theoreticaltraining

best solution is obviously to combine theadvantages of both methods, but without
interrupting the production process. By

Sales

Engineering/manufacturing

Practical training

Deficiency (gap)

ErectionStart-up

Paper machine testingcombining the learning-by-doing approach

Commercial operation

Start-up

with permanent availability, Voith has de-

Project schedule

Process

veloped the interactive CBT – Computer
Based Training – system. Fig. 1 shows

Logic

Automati on

how this innovative CBT system optimallycomplements conventional training from

Commandsimulations

beginning to end.

Exercises

Technical documentation

Voith had long recognized the growing

Interactive training

need for future-oriented interactive train-

Theoreticaltraining

ing, and developed Computer Based Training accordingly. CBT comprises animatedSales

Engineering/manufacturing

Erection

Practical training
Start-up

Paper machine testing

Commercial operationinteractive 3-D operating and mainteStart-up

nance training with simulation of all main

Project schedule

processes and functions. This opens up
innovative

and

ways

impartingeasilyunderstandable

training system ensures optimal learning

erational and command logic sequences

highlyprogress and high motivation accordingly

taking into account interlock conditions

effectively. Voith has developed CBT as an– the best possible assurance of trouble-

and linkages.

interactive learning experience for cus-

free production thanks to well-trained op-

tomer personnel, with scope tailored toerators.

ofknowledge

their specific requirements and extend-

Supplied in digital media form (CD orDVD), Voith CBT can be used practicallyable according to need. Aside from oper-

The main advantages of CBT are:without limitation on all PCs in the corpo-

ating and maintenance instructions, CBT● High learn speed

rate network, control room, etc.

scope can also include for example logic● Availability of information in a

diagrams, drawings, etc.

structured and interactive way● Permanent training

Voith Computer Based Training not only
covers the entire paper production line,
but also each relevant process together

Process module● Completeness and repeatability of thecontent● Greater user’s motivation.

with logic, automation and simulation

The process module, including maintenance supplement, illustrates in the customer’s language the technological con-systems. It furthermore includes technical

Voith CBT not only enables audio-visual

cepts of the entire production process,documentation together with exercises

simulation of all kinds of processes, but

including 3D animations of all machineand self-examination checks. This modern

also the simultaneous visualization of op-

component motions.

21/06

56

Fig. 2: Simulation of a vacuum pump integrated
in the production process.
Figs. 3 and 4: Simulation of headbox operationin the process by calling up the nameplate data.
2

3

Mechanical maintenance procedures (fab-example, Fig. 5 shows a CBT screen of

ric or roll changes, etc.) are also simulat-

the Sirius logic diagram.

Command simulation

ed audiovisually by 3D animations and dig-

The command simulation module enables

ital mockup interactions. This enables fastand easily remembered learning of all theoperation from virtual control panels and
DCS (Digital Control System) screens. All

Automation

technological concepts and maintenancework involved in the production line.

4

commands are automatically translated
The automation module provides animat-

into 3D simulation of the resultant me-ed simulations of all the hydraulics andchanical motions. This enables a complete

The CBT screen in Fig. 2 shows the simu-

pneumatics systems together with the re-understanding of new processes andlation of a vacuum pump integrated in the

spective mechanical motions. The purpose

technologies well before the actual pro-production line. And Figs. 3 and 4 show

and functioning of each system compo-

ject installation.

for example how headbox operation in thenent is also shown.

process is simulated by calling up the respective data on the nameplate.

All the main command sequences are
Fig. 6 shows a typical hydraulics systemsimulated, so that operators can fully

diagram for simulating motions of thepractise corrective intervention in case ofheadbox rear wall.

control system failure.

Logic module
The logic module provides simulation
screens of control logic sequences andcommand interlocks throughout the production line. These easily understood
simulations enable the automation, mechanical maintenance and production personnel to fully comprehend all the operational requirements and actions. As an

21/06

8

9

57

Fig. 5: Sirius logic diagram.
Fig. 6: Headbox rear wall hydraulics systemsimulation.
Fig. 7: Reel spool change and control systemsimulation.
Fig. 8: Search engine results for “Reel”.
Figs. 9 to 12: Interactive exercises.
5

6

Exercises

Typically, Fig. 7 shows the CBT simula-

7

In summary: Voith CBT offers user-friendly, self-explanatory and easily understoodtion screen and virtual control panel forchanging reel spools.

Technical documentation

The exercises module enables operators

training in all application areas and in fullto test their learning progress. In case ofcompliance with customer requirements.

a wrong response or if a wrong answer is

It enables lasting and highly effective

given to any of the questions asked, thelearning based on Voith Paper’s knowl-

respective subject matter is automaticallyedge, experience and reliability.

This module comprises a search engine

displayed. The operator can then refreshfor calling up all technical documentation

his or her knowledge in various ways (e.g.

CBT is a valuable tool for:(such as operating and maintenance man-from operating manuals, animations, etc.).

● maximizing production output,

uals, drawings and diagrams, etc.) by en-

Figs. 9 to 12 show a typical exercise● optimizing paper quality,

tering a key word. Fig. 8 shows the tech-sequence. The operator can select from● and minimizing shut-down and outage

nical documentation called up by entering

multiple answers to each question. Wrongtimes thanks to optimal operator training.

“Reel” in this search engine.

answers are indicated, and the operator

10

is then referred to the respective docu-

This modern training method greatly ac-

mentation. After this repetition of thecelerates the learning progress – result-learning process, operators normally giveing in highly motivated personnel forthe right answer.

troublefree operation.
11

12

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58

High-shaft Technology –a weaving innovation breaks new groundin forming fabric design

Arved Westerkamp
Fabrics
arved.westerkamp@voith.com

Matthias Höhsl
Fabrics
matthias.hoehsl@voith.com

The realignment of development effort at Voith Paper
Fabrics has led to a new weaving technology for improving theperformance of forming fabrics.

Existing weaving technology, with no

Our ongoing development work on a com-more than 26 heald frames or shafts, se-pletely new product portfolio shows up

riously limited the fabric weave pattern

the enormous potential of this weaving

options. Voith Paper Fabrics, therefore,

innovation. Preliminary test results al-teamed up with a leading supplier ofready verify the greatly superior perfor-

weaving machinery to develop a new gen-mance of forming fabrics woven by high-eration in this technology.

shaft technology.

The goal of this development effort was a

Weaving technology

new weaving concept enabling a far wider
range of design options while retaining

Forming fabrics are woven on a highly

the geometrical layout of conventional

complex weaving machine system thatweaving machines. This goal has now

determines the basic structure or design

been attained with the new high-shaft

according to the way the shaft and wefttechnology, using a larger number of

threads intermesh.

shafts than previously – an innovationthat opens up a new era in fabric weaving

The shaft threads are raised and lowered

technology.

in the weaving machine by heald shafts,
also known as shaft frames, according to

21/06

No time was lost in putting this high-shaft

the pattern determined by the designer.

weaving technology into practice: the new

Weaving takes place by projecting insert-

weaving machines meanwhile installed

ing the weft threads through the shed

have rapidly brought their users possibili-

opened between the upper and lower

ties unimaginable in the past.

shaft threads (Fig. 1). The maximum num-

59

Fig. 1: Operating principle of a weaving machine.
Fig. 2: High-shaft weaving machine.
Fig. 3: Weave pattern of a 4-shaft fabric surface.
Fig. 4: Schematic representation of main binding
diagonals.
1

2

Shaft frames

Warp threads

Sley/weaving reed
Weft insertion

Warp beam Weaving direction

Fabric take up rollber of weaving patterns possible basicallyforming fabric manufacturers. As leading

A thorough analysis of Voith Paper Fabrics

depends on the number of shaft frames –partner to the paper industry, Voith is theand other companies’ products confirmed

the more shafts the more patterns. A

only supplier able to offer not only entire

in particular that the regularly repeatedhigh-shaft weaving machine is shown in

production lines, but also all paper ma-

weave patterns in conventional fabrics

Fig. 2.

chine fabrics on a customized basis.

tend to emphasize marking. The goal was,therefore, to correct this situation by

Future demands on product quality andWhy a new forming fabricrunnability cannot be met by conventional

generation is necessary

fabric technology, which no longer allows

developing a new weaving technology.
High-shaft technology

any significant improvements. For examPapermakers and machine suppliers theseple, stability, drainage behaviour and free-

Diagonal patterns are formed in all kinds

days constantly have to meet new tech-dom from marking can only be improvedof textiles by longitudinal and lateral rep-

nological demands – whether in connec-

by completely changing the fabric weave

etitions in the basic weaving register. Thistion with furnish quality, new process

structure. The Voith Paper Divisions paper

is clearly illustrated in Figs. 3 and 4.

components, or greater productivity withmachine and fabrics development engi-

Such diagonal patterns continuously in-ever-increasing speeds and quality re-neers, therefore, investigated the techni-

terfere with drainage behaviour by creat-quirements – and these trends also affectcal possibilities for achieving this aim.

ing similarly structured drainage channels
at regular intervals.

3

4

In the wet section of the paper machine
this results in drainage pulses being
repeatedly transferred to the same points
on the web, where they cause marking
as a function of the natural oscillation
frequency

behaviourandinteraction

between the forming fabric and paper
machine.

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60

Fig. 5: Schematic representation of regulardrainage pulses, and their overlapping (in blue).
Fig. 6: Schematic representation of irregulardrainage pulses, and their overlapping (in blue).
Fig. 7: Schematic representation of regularly
distributed binding points in e.g. 3-layer fabrics.
5

6

7

As shown in Fig. 5, the drainage pulses

tacting the paper web, and a coarse e.g.

have a fiber support function on the side

due to repetitive weaving patterns gener-

5-shaft weave on the drainage and stabi-contacting the paper web. However, theally lead to local changes in drainage be-

lizing side. This combination would theo-problem still remains of marking due tohaviour that are emphasized in the pulse

retically produce first-class paper – ex-small shaft registers.

overlap zones. The worst-case scenario is

cept for the problem of binding the two

hydraulic marking, often with a negativesides together.

Increasing the number of shaft frames
opens up far more binding possibilities in

effect on fillers retention as well.
With first-generation 3-layer fabrics thisthe production of forming fabrics. These

The high-shaft technology developed byproblem was tacked with a separate bind-possibilities include discontinuous diago-

Voith Paper Fabrics now makes it possible

ing thread system as third layer. The

nals and almost free distribution of theto eliminate these diagonal patterns inresult however was formation faults, be-binder attachment and detachment points.

the fabric weave either completely, or

cause to take up relative motion between

Fabrics produced with this high-shaft

only partially if desired. This results in thethe layers, the binding threads were pre-technology greatly improve the web mark-effect shown in Fig. 6: reduction of web

stressed shrunk during the heatsetting

ing situation.

marking thanks to systematic interference

process during in fabric production and,with the drainage pulses. Since the pulse

therefore, interfered with flatness on the

The schematic distribution of binding

overlap zones are irregularly distributed,side contacting the paper web. Similar ef-

points with regular weave register patterntheir effect is more diffuse and less dis-

fects were caused at the binding threadin Fig. 7 clearly shows the diagonals

turbing.

attachment interlacing points on the otherformed, that can be subdivided into prin-side of the fabric. Furthermore, the bind-cipal

According to these findings, the optimal

ing threads in first-generation fabrics

shown).

andsecondarydiagonals(notsolution would be a plain weave either

were simply passed around the shaft

without diagonals, or with diagonals in all

threads on this side, so that frictional

By contrast, the irregular distribution of

directions equally. But unfortunately, thiswear between the binding and shaft

binding points in Fig. 8 clearly exhibits

would only solve the marking problem.

threads led in time to ever-increasing web

discontinuous diagonals that are almost

marking.

freely distributed.

meet requirements for pickup volume,

The marking problem has been solved toPapermakers today are no longer limited

cross-stability, etc. For this reason wide-a considerable extent by developing weft-to weft-bound SSB fabrics woven withspread use is made today of fabrics withbound 3-layer SSB (Sheet Support Binder)

16, 20 or max. 24 shaft frames. Voith Pa-

a fine-mesh plain weave on the side con-

fabrics with binding threads that also

per Fabrics high-shaft technology now

Drainage fabrics, however, must also

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61

Fig. 8: Schematic representation of irregularly
distributed binding points in e.g. 3-layer fabrics.
Fig. 9: Comparative drainage performance of
20-shaft as against 40-shaft fabrics.
Drainage performance in % of headbox volume.
8

920-shaft 2:1
347 cfmdry content: 18.1%
dry content: 20.7%

20-shaft 1:1
361 cfm
40-shaft 3:2
385 cfm

0.1 0.4

0.2 0.5
1.0 0.7

3.5 4.1
4.5 3.8
1.0 0.8
39 41

40-shaft 2:1
354 cfm

1.2 0.4
42 457065 l/min
8499 l/min

Summary

sets new benchmarks with a productThe drainage performance of the 20-shaft

range woven on 40-shaft looms. Thesefabrics is marked in blue. The outer fabricfabrics are similarly structured to 20-

has a weft ratio (web side / backing side)

A retrospective examination of productshaft weft bound SSB fabrics, with aof 2:1 and an air permeability of 347 cfm,

developments in forming fabric technolo-

plain-weave layer on the paper web side

while the inner fabric has a weft ratio ofgy over the last ten years shows thatto ensure good fibre support and a

1:1 and an air permeability of 361 cfm.

these have been more of an evolutionary
nature than revolutionary.

5-shaft layer on the other side for goodpick-up and cross-stability. But they have

The drainage performance of the 40-shaft

the outstanding advantage of far greater

fabrics is marked in black. The outer fab-

The high-shaft technology developed by

freedom in binding weft distribution,

ric has a weft ratio (web side / backing side)

Voith offers our partners in the paper in-which can, therefore, be optimized with-of 2:1 and an air permeability of 354 cfm,

dustry the benefits of a genuine innova-

out making any compromises.

while the inner fabric has a weft ratio oftion that brings significant improvements

3:2 and an air permeability of 385 cfm.

compared with existing standards.

The headbox volume output is controlled

Thanks to systematic development invest-

First commercial resultsby flow regulation in zone 2 of the suction

ments opening up new possibilities in

Before undergoing practical trials in thebox, in both cases at 350 litres/min.

forming fabric design, Voith has once

paper industry, testbed runs were carried

Drainage performance is shown as a per-again set an important benchmark in theout on the VPM 4 pilot paper machine incentage of headbox flow rate [%].

ongoing improvement of paper quality.

section. For comparative testing purpos-

Initial drainage performance of the 40-

The first commercial results with high-es, SC-A paper with 71°SR freeness andshaft fabrics is clearly higher than that ofshaft technology fabrics on paper ma-

approx. 32% ash content was chosen be-

the 20-shaft set. Also in the vicinity of thechines are extremely promising, and thecause of our extensive experience withsuction roll, drainage performance of thepotential for further developments withthis grade on VPM 4, where numerous

40-shaft fabrics is much higher, resulting

this technology is very high exceptional.

tests have been carried out on weft-boundin a significantly higher dry content of

We are therefore focusing our full devel-

SSB fabrics woven with fewer shaft

20.7% at the pick-up instead of 18.1%.

opment effort in this sector on new

frames.

Commercial production results confirm

future-oriented product generations.

Heidenheim with a TQv former in the wetthese test findings.
Fig. 9 shows the TQv former drainage
layout.

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62

Voith Paper and IHI
Strengthen the Partnership
Create, Build-Up, Secure!
The joint venture company Voith IHI Paper Technology Co.
Ltd. (VIPT) started its operations in April 2001 after more than twenty
years of close cooperation between Voith AG and IshikawajimaHarima-Heavy-Industries Co., Ltd (IHI) in the field of paper technology.
When the presidents of the founding companies, Dr Sollinger from
Voith Paper and Mr Ito from IHI, met in September 2005, they where
both stressing their satisfaction with the successful cooperation
Martin Schily

between Voith and IHI and the good results of VIPT.

Voith Paper IHI
martin.schily@voith.ihi.co.jp
Fig. 1: Mr Kuwabara (President Industrial Machinery IHI), Mr Ito (President IHI), Mr Kose (President
VIPT), Mr Schily (Vice President VIPT), Dr Sollinger(Chairman of the Executive Board of Voith Paper),
Mr Hatagawa (Vice President Industrial Machinery
IHI), after the signature of their agreement to increase Voith Paper’s share in VIPT.
Fig. 2: The seminar room.
Fig. 3: The speakers during Q&A with customers.
From left the speakers: Mr Tuomola (Managing
Director LEIPA GmbH), Mr Burke (Senior President
Voith Paper Fabrics Asia), Mr Halmschlager(Member of the Board of Management Voith Paper
St. Pölten Board & Packaging), Mr Wassermann(Senior Vice President Voith Paper Graphic Papers),
Mr Morita (Director VIPT), Dr Pfalzer (Executive
Vice President Voith Paper Fiber Systems), Mr
Münch (Executive Vice President Voith Paper Automation), Dr Sollinger (Chairman of the Executive
Board of Voith Paper), Mr Kose (President VIPT).

of papermaking. The invitation under the

to be a reliable partner for customers inmotto “Voith Innovations” raised highJapan, Korea, and other South-East Asia

interest, which was apparent from thecountries. Following through on the good

150 participants from the customers’

results, Voith Paper and IHI also conclud-side. In order to make this event fruitfuled an agreement to increase Voith Paper’s

and efficient for all participants, all pre-share, showing the commitment to the in-sentations and discussions where trans-

dustrial leadership of Voith Paper.

lated into Japanese simultaneously, which

Following this important event for VIPT,

Good preparation and organization guar-

confirming that Voith and IHI strengthened

anteed a smooth program sequence to thetheir ties in VIPT, an even more exciting

benefit of the participants and fostered

event for the Japanese paper industry

intensive communication.

took place in Tokyo: A first all-Voith Paper

2

21/06

into Voith Paper’s new ideas for the future

support a strong development of VIPT andalso contributed to the great success.

Fig. 4: The “Edelweiß Group” gives a refreshingpresentation of Bavarian October Fest atmosphere.
1

Both stressed their intention to further

seminar for the Japanese Paper Industry

The day was filled with the presentation

was organized by VIPT. All divisions ofand discussion of only the newest devel-

Voith where invited to present a glimpse

opments at Voith Paper and Fabrics:

63

Especially the new “Paper Technology
Center (PTC)” in Heidenheim and the Voith
HighDryer and BoostDryer concepts havecaught the interest of the participants.
Mr Jaakko Tuomola, Managing Director of
Leipa GmbH, presented the Leipa Schwedt
PM 4 project, a production line for LWC
papers, supplied by Voith Paper, thatstarted up in mid 2004. The details werereceived with high interest. The
feedback of customers at thisseminar has been broadly very
positive.
Another high point of the meeting was theparty with customers, arranged by Voith
IHI Paper Technology, in view of the“German year in Japan”. It was celebrated just at the same time and further
deepened the friendship and cooperation
between Japan and Germany.
Not only the invited customers, but also
members of the German Culture and Industry Society, participated at the final
event of the seminar. The seminar has
also been honored by the visit of many of
the top management of the industry andby Mr Stefan Gallon, the Ambassador for 3
Economic Issues of the German Embassy,

4and the top management of Voith Paper
and IHI. In order to respect the long ways
home of the participating persons, thisevent was arranged to be short, but impressive. And judging by the comments ofmany of the participants, this seminar
was a full success.

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64

Right on the customer’s doorstep –Voith Paper Technology Days
Customer congresses, trade fairs and symposia mainly
serve for drawing the widest possible attention to product developments, and for fostering contacts whether old or new. However,such large-scale events often leave out some important aspects
due to sheer lack of time.

Markus Wild
Paper Machines Graphic
markus.wild@voith.com

Voith Paper has solved this problem by

At the end of 2005 our Technology Days

organizing so-called Paper Technology

were held under the auspices of Voith

Days in parallel to the main event. These

Paper Asia in India, Thailand and Indone-

conferences focus on a specific countrysia. We invited the graphic paper produc-or customer segment, and are tailored to

ers in those countries to conferences

the needs of participants. Usually theyon the theme of “Small paper machine

only deal with one main theme of particu-

rebuilds: big returns for a small invest-

lar interest to those attending. Voith Paperment”. Examples were shown of how typi-Technology Days are now so popular thatcal production bottlenecks, such as unfa-

they have become practically indispens-vourable basis weight cross-profiles, canable to our customers.

be overcome thereby. Topical problem

These events are organized on a supralocational and interdivisional basis in teamwork with local Voith representations,thus enabling perfect coverage of theagenda.

Bangkok

21/06

Chennai

65

areas were discussed at length, and it

In India our two Technology Days werelocal Voith Paper Rolls Division team, thiswas explained how small rebuilds using

held in Chennai and Delhi, thus serving

final event of the series was an occasion

the latest technology can bring astonish-

regional customers in the south and north

to be remembered.

ing improvements in such cases. Re-of this large country. According to feed-builds@Voith, an independent Voith expert

back from participants, their expectations

The particularly positive response to ourgroup free of other tasks, is currently

were exceeded, not least thanks to excel-

presentations on “Headbox rebuilds to di-concentrating exclusively on rebuild mea-

lent support by the Voith Paper India peo-lution water technology” and “The single

sures in the paper industry. In many cas-ple. About 140 specialists from the Indian

Nipco Flex press” once again confirmed

es even the smallest rebuild elements inpaper industry familiarized themselvesthat we had chosen the right rebuild

the Voith AMB (After Market Business)here with Voith’s rebuild know-how, andthemes for this customer group.

range have a surprisingly positive effect.

discussed practice-oriented examples at
length.

Together with the thanks we received
from numerous participants, analysis of

Our two Paper Technology Days in Thailand started on November 23, 2005 in

Motivated by the success of these eventsthe feedback forms from our nearly

Bangkok, where we hosted 85 delegatesin Thailand and India, we completed our

400 guests impressively documents theof the Siam Group. Thanks to the support

Technology Days tour in Jakarta, Indone-

outstanding success of these events. The

of C.L. International, the local Voith Papersia. Thanks to first-class planning andrequests we have received for more of

representative, we were able to set the

support by Voith Paper Jakarta and thethese Technology Days, dealing with vari-perfect scene for ensuring a successful

ous other themes, clearly demonstrate the

kick-off day, which was fittingly conclud-

thirst for know-how among our customers

ed with a gala dinner and a lively discus-in the paper industry. Voith Paper takes

sion round. The second Technology Day inthis as confirmation that we are on theThailand was held at Advance Agro inright track in expanding the Technology

Pratchinburi, where, once again, our se-

Days concept.

lected agenda suited the target group sowell that a lively round of detailed discussions ensued.
Jakarta

Delhi

21/06

66

1

Give work safety an additional chance
Whoever works in vessels and confined spaces takes a big
risk: every minute counts in an emergency and in particularly
tight spaces, valuable time can be lost during rescue work. Every
entry presents a hazard.

The ProSafe rescue shell fromthese vessels. However, rescue is very

Voith for greater safety

difficult due to the structurally necessary,

Herbert Kotitschke

small oval access opening and is almost

Paper Machines Graphic
herbert.kotitschke@voith.com

Steam-heated dryers, Yankee and smooth-

impossible without special aids.

ing cylinders used to dry and smooth thepaper web are pressure vessels, which

Specific accident prevention regulations

are examined internally by specialists inand guidelines, therefore, apply in these

the course of so-called internal inspec-cases. Employers are required to “ensure

tions. Entry may also be necessary to

rapid rescue” and to “provide suitableconduct maintenance or rebuilding work.

equipment” for this purpose. The protection of your employees should be among

As for all work in confined spaces or ves-

your top priorities.

sels, this work is classified as hazardous

Fig. 1: ProSafe.
Figs. 2 and 3: Rescue from a cylinder.
2

3
Help!

and requires special safety measures.

The new ProSafe rescue shell developed

These also include emergency measures,

especially for use in particularly confinedcomprising the rescue of injured or inca-

conditions should not be missing from any

pacitated persons from the interior of

emergency equipment. It allows accident
victims to be rescued and transported
away fast – even through narrow entries
and over steep ladders and stairs. Morethan 60 rescue shells were delivered
within just a short period. The clientele
includes individual companies and domestic and foreign facilities of large corporations. You will find further information atwww.prosafe.voithpaper.com

21/06

67

Lithograph “The ‘good’ press”
from 1847 with accompanying poem:“Sweet censorship, please be our guide
For on our own, we can’t decide.
We long to be under your wing
Like children on a leading string.”“Black on White” –400 Years of Newspapers
Although the exact publication date of the first newspaper
cannot be established, the development of what was for centuries
our most important information medium, as well as the long anddifficult struggle to attain freedom of the press, are documented in
the remarkable exhibition “400 Years of Newspapers – A Medium
Makes History” in the Gutenberg Museum in Mainz.
The newspaper had many predecessors,
although admittedly not in printed form.
Julius Caesar made a fortune as a publisher of the Acta Diurna (“Daily Events”),
in which he fulfilled the desire of plebeians, the common people of ancient Rome,for vivid accounts of splendid weddings,
scandalous trials and violent gladiator fights.

“Relation”, the first weekly newspaper to appear
regularly in the German-speaking world.

It is indisputable that the printed newspaper originated in the German-speaking
world and that its emergence would havebeen impossible without Gutenberg’s invention of the printing press with moveable type. The first newspapers that fea-

tured a range of different news topics,
albeit with irregular publication dates,
were issued in the 16th century, spreading from Mainz along the river Rhine
across the first printing and publishinghouses in Basle, Strasbourg, Cologne andthe centres of trade in the Netherlands.
The German word for newspaper, “Zeitung”, and the later designation “Times”,
both trace back to the Low German word
“Tiden” for the ebb and flow of the tides.
Relation, which has been proven to be thefirst weekly newspaper to appear regularly, was published in 1606 in Strasbourg –

21/06

68

it was only four pages long, but was issued punctually and at regular intervals;
it did not take the form of a pamphlet on
one single subject, but contained different
news items that were of general interest
to the extremely limited number of people
who were able to read at that time. The
first daily newspaper was printed about
fifty years later in Leipzig, Germany. The
question of whether the “newspapers”
that were published earlier deserve thatname remains disputed amongst experts,
as these precursors lack two basic features that are considered to be the defining characteristics of a newspaper: regular publication and varied content.

Members of the large Fugger trading family, which even at that time operated internationally, took exception to the often
unreliable information. They founded theirown weekly paper, and, making use of
their offices across Europe, establishedthe first network of professional newspaper correspondents. They had the job ofdelivering short, factual and reliable news
by set deadlines. For that, they received aregular “writers’ fee” of 26 guilders per
year. At the time, this was a handsome
fee – today, it would have the purchasing
power of about four thousand euros. The
Fuggers’ Hauspostille is considered to be
the world’s first economic journal.

The first newspaper proprietors wereprinters. They invented periodicals in order to be able to use their equipment andskills to secure a regular income. Theycollected news from different, often rather dubious, sources. And when there was
not quite enough material available forthe next issue, they embellished, expanded or simply made up the information. As
a result, canards are as old as the newspaper itself.

In the early stages, ecclesiastical andsecular leaders did not concern themselves particularly with the content of thefirst newspapers and their precursors.
Nevertheless, it is true that censorship(the word is derived from the Latin “censura”, the monitoring of moral maturity
and behaviour) had existed since well before the invention of the printing press.
The church in particular had always
wielded strong influence, with the aim of

Current events
21/06

Children’s comics

protecting the “pure doctrine”. Legend
has it that in Basle and Strasbourg, there
were printer’s apprentices who wereburned at the stake because of their“heretical activities,” even though thepoor lads were guilty of nothing morethan a lack of familiarity with the Latin
language – they had caused a few misprints while composing Bible texts, thus
altering their meaning.
Secular sovereigns at first underestimated the power of the printed word. However, when pamphlets and newspapers went
beyond simply reporting facts and started
to comment on events and criticise thestatus quo, when publishers even went so
far as to add illustrations to the written
texts in order to increase their circulation
and when clever wood-block and copper
engravers discovered the medium of caricature, secular authorities joined ranks
with the ecclesiastical leaders and censorship was legally institutionalised. The
fight for “freedom of the press” had begun.
It has had many victims, many of whom
remain unknown. The few whose names

Horoscopes

The latest fashion

69
Christian Friedrich Daniel Schubart (1739-1791)
and his Deutsche Chronik, the publication ofwhich resulted in ten years in prison.

have been passed down from early newspaper history are not remembered as failures. Their courage to stand up for freedom of expression, even in the face of
personal threat, ultimately bore fruit.
Christian Friedrich Daniel Schubart, aSwabian poet, musician and journalist, isconsidered to be one of the great newspaper men in the newspaper’s state oforigin as well as in the history of the German press. His fate and that of others likehim finally led to freedom of the press inGermany in the late 18th century.
Schubart was born in 1739 and grew up
in Aalen near Heidenheim, now the location of the Voith company headquarters.
He made a name for himself as an organist and head of the court capella. In addition, he wrote lyrical poems, including thefamous one about a “capricious trout”,
which was later set to music by Schubert.
He wrote powerful and irreverent articles
for the press in which he spoke out
against the powers of the sovereigns andthe authority of the church. For that, he
was forced to leave office and was expelled from the country. In 1774 he

founded the Deutsche Chronik in the more
liberal Augsburg. The publication became
one of the leading voices of German Enlightenment. Schubart’s biting, polemical
style became increasingly popular, muchto the chagrin of the absolutistic rulers. In
1777, Duke Carl Eugen von Württemberg
had him lured into his duchy and kidnapped. Schubart was imprisoned withouta trial or sentence in the infamous Hohenasperg fortress, where he remained forten years. It was not until 1787 that he
was freed, thanks to the intervention of
the Prussian king Frederick II. Although
he tried to resume his journalistic careerwith a newspaper called VaterlandsChronik, he died in 1791, mentally andspiritually crushed. Friedrich Schiller paida lasting tribute to his friend Schubart in
his work Die Räuber (The Robbers), in
which the demand for freedom of thought
is made.
In 1770, censorship of any kind was madeillegal for the first time for the local, German-language press in Altona, which atthat time was part of Denmark. The newspapers in nearby Hamburg profited fromthis as well: they were granted “a certain
degree of freedom, following the English
practice.” The British model of a much
more relaxed attitude towards the medium of the newspaper gradually became
widely accepted in Germany. Hamburgdeveloped into a significant centre of thepress and has remained so to this day.
Since 1949, freedom of the press has
been entrenched in Article 5 of the Constitution of the Federal Republic of Germany, as is the case in all liberal democracies. This achievement was the result ofa long and arduous struggle. The historyof the newspaper, free reporting and distribution in this medium, the development
towards today’s variety and global news
transfer all mirror a high cultural tolerance. Even in the times of radio, television and the Internet, the printed newspaper remains an important pillar of democratic life. Its free, unrestrained development should be respected and protected, even though, to paraphrase Goethe,
not everything that is printed black on
white is worthy of being owned and read.
Manfred Schindler

The main, recurring themes of newspapers – fromcurrent events of the day right up to the weather
report – are as old as the newspaper itself.
As early as the first issues, publishers tried toincrease the incentive to buy and hence the circulation numbers, sometimes by means of rather
attention-grabbing illustrations. Only a small percentage of the population was able to read andwrite – the majority had to rely on literate people
who read the articles out to them. The pictures
served to help these listeners understand the text.
Caricatures

Local news

Weather reports
21/06

70

Startup highlights in 2004/2005

Fiber Systems

Stock preparation systems
and sub-systems for graphic
papersKishu Paper, Japan.
Daio Mishima, Japan.
Stora Enso North America, Biron,USA.
Weyerhaeuser, Hawesville, USA.
Blue Heron Paper, Oregon City,
USA.
UPM, Schwedt, Germany.
Steinbeis Temming Papier,Glückstadt, Germany.
Shandong Huatai Paper, Dongying,
China.
Gold East Paper, Dagang, China.
Hebei Norske Skog Longteng
Paper, Zhaoxian, China.
Norske Skog Pan Asia Paper,
Cheongwon, Korea.
UPM, Steyrermühl, Austria.
UPM, Kaipola, Finland.
Mondi Paper, Merebank,
South Africa.
Cartiere Burgo, Mantova,
Italy.
Stock preparation systems
and sub-systems for board andpackaging papers
Klabin, Angatuba, Brazil.
Klabin, Piracicaba, Brazil.
Eucatex, Salto, Brazil.
Conpel Cia., Condé, Brazil.
Smurfit-Stone, West Point, USA.
Kartonagen Schwarzenberg,
Schwarzenberg, Germany.
Papierfabrik Fritz Peters,
Gelsenkirchen, Germany.
Les Papeteries de Champagne,
Nogent-sur-Seine, France.

21/06

Papierfabrik Hamburger-Spremberg, Spremberg, Germany.
Papierfabrik Adolf Jass Schwarza,
Schwarza, Germany.
Papier- und Kartonfabrik Varel,
Varel, Germany.
Stock preparation systems andsub-systems for tissue papers
PSA, São Leopoldo, Brazil.
CMPC Tissue, Talagante, Chile.
Metsä Tissue, Raubach, Germany.
Productos Familia, Medellin, Chile.
Stock preparation systems
and sub-systems for dewateringmachines
Veracel Celulose, Eunápolis,
Brazil.

Papier

Stock preparation systems
and sub-systems for speciality
machines
Eucatex, Salto, Brazil.

Paper Machines
Graphic papers
Gold East Paper, Dagang, China.
Holmen Paper Papelera Peninsular, Peninsular, Spain.
Mondi Paper, Merebank,
South Africa.
Shandong Huatai Paper, Huatai,
China.
CMPC – Compañía Manufacturera
de Papeles y Cartones, Talagante,
Chile.
Kunshan Banknote Paper Mill,
Kunshan, China.
Mudanjiang Hengfeng Paper,
Hengfeng, China.
Productos Familia, SCA Colombia,
Bogotá, Columbia.
MD Papeis, Caieiras, Brazil.

Board and packaging papers
Les Papeteries de Champagne,
Nogent-sur-Seine, France.
TissueProductos Familia, Medellin, Chile.
CMPC Tissue, Talagante, Chile.
Dewatering machines
Jiang Lin, China.
Veracel Celulose Eunápolis,
Bahia, Brazil.

Installation and rebuilds
Klabin, Angatuba, Brazil.
Ripasa Celulose e Papel, Cubatão,Brazil.
Citroplast Indústria e Comércio dePapéis e Plásticos, Andradina,Brazil.
CMPC Celulosa, Laja, Chile,
Suzano Bahia Sul Papel e
Celulose, Mucuri, Brazil.
Orsa Celulose, Papel e
Embalagem, Paulínia, Brazil.
Visy Paper, Melbourne,
Australia.
Fanapel Fabrica Nacional de
Papel, Colonia, Uruguay.
Shandong Hengan Paper, Weifang,
China.
Vinson Indústria de Papel Arapoti,
Arapoti, Brazil.
Kappa Herzberger Papierfabrik,
Herzberg, Germany.
SCA Packaging Containerboard
Deutschland, Aschaffenburg,
Germany.
Tambox CCC, Tolentino, Italy.
Arkhangelsk Pulp and Paper Mill,
Novodinsk, Russia.
Tecnokarton, Mayen, Germany.
Sappi, Cloquet, USA.
Appleton, Roaring Springs, USA.

Bowater, Calhoun, USA.
Cartiere Burgo, Sora, Italy.
Cartiere Marchi, Toscolano Mill,
Toscolano, Italy.
Fabrica Nacional de Papel,
Fanapel, Uruguay.
Gebr. Lang, Ettringen,Germany.
Holmen Paper, Braviken,
Sweden.
Hong Won Paper, Hongwon,
Korea.
Kimberly-Clark, Munising,USA.
Lenzing Aktiengesellschaft,Lenzing, Austria.
Medvode, Goricane Tovarna
Papirja Medvode d.d., Slovakia.
Mitsubishi Paper, Hachinohe,
Japan.
Mondi Business Paper Hadera,
Hadera, Israel.
Mondialcarta, Lucca, Italy.
Nippon Paper, Ishinomaki, Japan.
Norske Skog Paper Mills, Albury,
Australia.
Norske Skog Tasman, Kawarau,
New Zealand.
Oji Paper, Tomakomai, Japan.
Radece Papir, Radece, Slovakia.
Stora Enso, Langerbrugge,
Belgium.
Torraspapel, Sarria de Ter,
Spain.
Coating technology
August Koehler, Kehl,
Germany.
Adolf Jass, Schwarza,
Germany.
Gold East Paper, Dagang, China.
Les Papeteries de Champagne,
Nogent-sur-Seine, France.
Cartiera di Germagnano,
Germagnano, Italy.

71

Union Industrial Papelera, Uipsa,
Spain.
Korsnäs Aktiebolag, Gävle,Sweden.
Nine Dragons, Dongguan,
China.
Nine Dragons Paper Industries,
Taicang City, China.
C.M.C.P., Kenitra, Morocco.
Papier- und Kartonfabrik Varel,
Varel, Germany.
Gap Insaat Yatirim Ve Dis Ticaret,
Yaslik, Turkmenistan.
Mudanjiang Hengfeng Paper,
Hengfeng, China.
Dr. Franz Feuerstein, Traun,
Austria.
Shanghai Cheng Loong (SCL),
Shanghai, China.
Hong Won Paper, Seoul, Korea.
Cartiere Marchi, Villorba mill,
Villorba, Italy.
Khanna Paper Mills, Khanna,
India.
MD Papier, Plattling,
Germany.
Mondi Paper, Merebank,
South Africa.
Perlen Papier, Perlen, Switzerland.
SCA Packaging Industriepapier,Aschaffenburg, Germany.
StoraEnso North America,
Steven Point, USA.
Zheijang Purico Minfeng Paper,
Minfeng, China.
Winding technology
Cascades, St. Jerome,
Canada.
Adolf Jass, Schwarza,
Germany.
Holmen Paper Papelera
Penin sular, Peninsular, Spain.
Mondi Paper, Merebank,
South Africa.

S.A. Industrias Celulosa
Aragonesa, Saica, Spain.
SCA Packaging Industriepapier,Aschaffenburg, Germany.
Shandong Huatai Paper, Huatai,
China.

FinishingJanus Concept
Gold East Paper, Dagang,
China (2).
SupercalenderRicoh Industrie France,
Wettolsheim-Colmar, France.
Ecosoft calenderZhejiang Rongfeng Paper,
Ronfeng, China.
Henan New Century Hengxing
Paper, Suixian, China,
Nine Dragons Paper Industries,
Taicang, China,
Cartiere di Guarcino, Guarcino,
Italy.
Calenders
Mondi Paper, Merebank,
South Africa.
Gold East Paper, Dagang,
China.
St. Regis Paper, Darwen,
Great Britain.
Tullis Russell, Glenrothes,
Great Britain.
Henan New Century Hengxing
Paper, Suixian, China.
Changde Heng An Paper Products,
Changde City, Hunan, China (2).
Klabin, Angatuba, Brazil.
Roll cutting machines
Gold East Paper, Dagang,
China (2).

Holmen Paper AB, Fuenlabrada,
Madrid, Spain (2).
MD Papier, Plattling, Germany.
Norske Skog, Albury, Australia.
Papresa, Renteria, Spain (2).
Les Papeteries de Champagne,
Nogent-sur-Seine, France.
Papierfabrik Adolf Jass, Schwarza,
Germany.
Papier- und Kartonfabrik Varel,
Varel, Germany.
Cartiere Burgo, Duino, Italy.
Parent reel cart
Gold East Paper, Dagang,
China (3).
Norske Skog, Albury, Australia.
Twister/Roll Handling
Holmen Paper AB, Fuenlabrada,
Madrid, Spain.
Schoeller & Hoesch, Gernsbach,
Germany.
Koehler Kehl, Kehl, Germany.
MD Papier, Plattling, Germany.
Ahlstrom Osnabrück, Osnabrück,
Germany.
Torraspapel, Motril, Spain.
Sappi Lanaken, Lanaken,
Belgium.

Automation
Bowater Halla Paper, Mokpo,
South Korea.
Steinbeis Temming Papier,Glückstadt, Germany.
Gold East Paper, Dagang,
China.
Hebei Pan Asia Longteng Paper,
Shijiazhuang, China.
Stora Enso Maxau, Maxau,
Germany.
Holmen Paper Papelera
Penin sular, Peninsular, Spain.

MD Papier, Plattling, Germany.
Shandong Huatai Paper, Huatai,
China.
Papierfabrik Hamburger
Spremberg, Spremberg, Germany.
Stora Enso Kabel, Hagen,Germany.
Les Papeteries de Champagne,
Nogent-sur-Seine, France.
Severoslovenske celulozky apapierne, Ruzomberok, Slovakia.
Sappi Lanaken, Lanaken,
Belgium.
Stora Enso, Hyltebruk,Sweden.
International Paper, Courtland,
USA.
Volksbetrieb Nabereshnotshelnynsky kartonnobumashni kombinat,
Naberezhnye Celny,
Russia.
Papierfabrik Fritz Peters,
Gelsenkirchen, Germany.

Voith Fabrics
Holmen Paper, Madrid, Spain.
Adolf Jass, Schwarza,
Germany.
Kappa Herzberger,
Germany.
Celulosa Arauco y Constitucio,
Planta Nueva Aldea, PM 1+2,
Chile.
Ripasa, Celulosa e Papel America,
Limeira, Brazil.
Gold East Paper, Dagang, China.
Lee & Man, Hong Mei, China.
Nine Dragons PM 9+10,
Dongguan, China.
Shandong Huatai Paper, Huatai,
China.
Empaques Modernos de
Guadalajara, Mexico.

21/06

72

Recent large orders

Fiber Systems
Stock preparation systems
and sub-systems for graphic
papersInpacel, Arapoti, Brazil.
Blue Heron Paper, Oregon City,
USA.
Weyerhaeuser, Hawesville, USA.
International Paper, Eastover, USA.
NewPage, Escanaba, USA.
Bowater Newsprint, Calhoun, USA.
Gebr. Lang, Ettringen,Germany.
Guangzhou Paper, Guangzhou,
China.
Century Pulp & Paper, Lalkua,
India.
Shandong Huatai Paper, Dongying,
China.
Stora Enso Sachsen, Eilenburg,
Germany.
UPM, Schwedt, Germany.
UPM, Schongau, Germany.
Stock preparation systems
and sub-systems for board andpackaging papers
Orsa, Nova Campina, Brazil.
CMPC, Puento Alto, Chile.
Klabin, Angatuba, Brazil.
Klabin, Piracicaba, Brazil.
São Carlos, São Carlos, Brazil.
Eucatex, Salto, Brazil.
Smurfit-Stone, West Point, USA.
Greif, Riverville, USA.
Kiev Cardboard & Paper Mill,
Obukhov, Ukraine.

21/06

Naberezhniye Chelny Cardboard
Paper Plant, Chelny, Russia.
Kartonagen Schwarzenberg,
Schwarzenberg, Germany.
Stock preparation systems andsub-systems for tissue papers
PSA, São Leopoldo, Brazil.
SCA, South Glens Falls, USA.
Papeles Higienicos de Mexico,Col. Cuauhtemoc, Mexico.
Georgia-Pacific, Rincon, USA.
Georgia-Pacific, Muskogee, USA.
Fabrica de Papel San Francisco,
Mexicali, Mexico.
Kimberly-Clark de Mexico,
Ecatapec de Morelos, Mexico.
Stock preparation systems
and sub-systems for speciality
machines
Eucatex, Salto, Brazil.

Paper Machines
Graphic papers
Century Paper & Board Mills, India.
Minfeng Paper, China.
Shandong Huatai Paper, Huatai,
China.
Shandong Sun Paper Industry
Group, Yanzhou, China.
Board and packaging papers
Dongguan Sea Dragon Paper
Industries, Dongguan, China.
Dewatering machines
Orion Line 1+2, Uruguay.

Installation and rebuilds
VPAW, Eastover, USA.
CMPC Santa Fé, Andritz, Chile.
Orsa, Brazil.
Klabin Correia Pinto, Brazil.
Inpa, Brazil.
Aracruz Guaiba, Brazil.
Klabin Angatuba, Brazil.
Procor, Chile.
Inpacel, Brazil.
Iguaçu São José Pinhais, Brazil.
Iguaçu Campos Novos, Brazil.
Cenibra 1+2, Brazil.
Cenibra 3, Brazil.
CMPC Tissue S.A., Talagante,
Chile.
Mondi Packaging Dynäs, Väja,
Sweden.
Mazandaran Wood and Paper
Industries, Iran.
Packages Limited, Karachi,
Pakistan.
Kappa Badenkarton, Gernsbach/Obertsroth, Germany.
Mondi Packaging Frantschach,
St. Gertraud, Austria.
Duropack Bupak Papirna,
Ceske Budejovice,
Czech Republic.
Kappa Zülpich Papier, Zülpich,Germany.
Klingele Papierwerke, Weener,
Germany.
Nine Dragons Paper Industries,
Taicang City, China.
Papierfabrik Palm, Wörth,Germany.
Zhuhai Hongta Renheng Paper
Products, Zhuhai City, China.

Neenah Paper, Munising, USA.
International Paper, Eastover, USA.
Aracruz Cellulose, Aracruz Guaiba,
Brazil.
Bowater, Calhoun, USA.
Bowater, Dolbeau, Canada.
Bowater, Halla, Korea.
Cartiere Burgo, Duino, Italy.
Cartiere Burgo, Sora, Italy.
Cartiere Marchi, Toscolano Mill,
Toscolano, Italy.
Century Paper & Board Mills,
Kasur, Pakistan.
Cifive, Santa Fe, Chile.
Coastal Papers, Rajahmundry,
India.
Crown van Gelder Papierfabriken,
Velsen, Netherlands.
Dresden Papier, Heidenau,
Germany.
Gebr. Lang, Ettringen,Germany.
Gold Huasheng, Huasheng, China.
Goricane Tovarna papirja
Medvode, Medvode, Slovakia.
Holmen Paper, Braviken,
Sweden.
Hong Won Paper, Hongwon, Korea.
Istituto Poligrafico e Zecca Dello
Stato, Foggia, Italy.
JSC, Solikamsk, Russia.
Kimberly-Clark, Munising, USA.
Lenzing Aktiengesellschaft,Lenzing, Austria.
MD Papier, Plattling, Germany.
Mitsubishi Paper, Hachinohe,
Japan.
Mondi Business Paper Hadera,
Hadera, Israel.

73

Mondi Paper, Ruzomberok,
Slovakia.
Nippon Paper, Fuji, Japan.
Nippon Paper, Ishinomaki, Japan.
Nippon Paper, Iwanuma, Japan.
Norske Skog, Golbey, France.
Oji Paper, Fuji, Japan.
Oji Paper, Tomakomai, Japan.
Oji Paper, Tomioka, Japan.
PanAsia Paper, Jeonju, Korea.
Papel Aralar, Aralar, Spain.
Sappi Ehingen, Ehingen,Germany.
Sappi Maastricht, Maastricht,
Netherlands.
ShinMooRim Paper, Jinju, Korea.
StoraEnso, Langerbrugge,
Belgium.
Suzano Bahia Sul Papel e
Celulose, Bahia Sul, Brazil.
Torraspapel, Sarria de Ter, Spain.
UPM-Kymmene Oyj, Kaipola,
Finland.
UPM-Kymmene Papeteries deDocelles, Docelles,
France.
UPM-Kymmene, Schongau,
Germany.
Coating technology
Hong Won Paper, Seoul, Korea.
Perlen Papier, Perlen, Switzerland.
MD Papier, Plattling, Germany.
Potlatch McGehee, Arkansas, USA.
Cartiera di Germagnano,
Germagnano, Italy.
Bowater Calhoun, Calhoun, USA.
Stora Enso Stevens Point,
Stevens Point, USA.

Cartiere Villorba, Villorba, Italy.
Nine Dragons, Dongguan, China.
Nine Dragons Paper Industries,
Taicang City, China.
Papelera del Aralar, Aralar,
Spain.
Cartiere Burgo, Verzuolo, Italy.
Shandong Chenming Paper,
Shandong, China.
CMCP Procor, Puente Alto, Chile.
Mitsubishi HiTec Paper Bielefeld,
Bielefeld, Germany.
Nine Dragons Paper Industries,
Sea Dragon, China.
Norske Skog, Walsum,
Germany.
Shandong Sun Paper Industry
Group, Yanzhou, China.
Winding technology
Packages Limited, Karachi,
Pakistan.
Potlatch Corp., McGehee, USA.
Dongguan Sea Dragon Paper
Industries, Sea Dragon, China.
JSC, Solikamsk, Russia.
MD Papier, Plattling,
Germany.
Packages Limited, Kasur,
Pakistan.
Papel Aralar, Aralar, Spain.
Sappi Ehingen, Geminus,
Germany.
Shandong Huatai Paper, Huatai,
China.
Shandong Sun Paper Industry
Group, Yanzhou, China.
ShinMooRim Paper, Jinju,
Korea.

FinishingJanus Concept
Perlen Papier, Perlen,
Germany.
Papel Aralar, Amezketa,
Guipúzcoa, Spain.
Ecosoft calender
Zhangqiu Huashi Paper, Zhangqiu,
China.
Zhejiang Xianhe Special Paper,
Quzhou, Zhejiang, China.
Vipap Videm Krsko, Krsko,
Slovenia.
Holmen Paper, Fuenlabrada,
Madrid, Spain.
Shandong Huatai Paper (PM 11),
Dongying, Shandong, China.
Shandong Huatai Paper (PM 12),
Dongying, Shandong, China.
Weyerhaeuser Pulp & Paperboard
Division, Longview, USA.
Mudanjiang Hengfeng Paper,
Mudanjiang, China.
3M Canada, Brockville,
Canada.
NipcoFlex calender
Weyerhaeuser Pulp & Paperboard
Division, Longview, USA.
Calenders
Norske Skog, Albury, Australia.
Shandong Huazhong Paper
Industry, Zaozhuang, China.
Trois Rivieres Centre Intégré enPates et Papiers, Trois Rivieres,
Canada.

Hangzhou Tongda Paper, Fuyang,
China.
Roll cutting machines
Cartiere del Garda, Riva del Garda,
Italy.
Oji Paper, Fuji, Japan.
Shandong Huatai Paper, Dongying,
China (2).
UPM-Kymmene Papier, Schongau,
Germany.
Stora Enso Kabel, Kabel,
Germany.
Parent reel cart
Shandong Huatai Paper, Dongying,
China.
Twister/Roll Handling
Shandong Huatai Paper, Dongying,
China.
Roto Smeets, Deventer,
Netherlands.

Voith Fabrics
Nine Dragons
PM 1, 2, 3, 4, 5, 6, 7, 8,
Dongguan & Taicang, China.
Ledesma, Jujuy, Argentina.
CMPC, Talagante, Chile.
PISA, Santiago, Chile.
SCA, Monterrey, Mexico.
Cascades, Memphis, TN., USA.
Potlatch, Las Vegas, NV., USA.

21/06

Paper Technology Journal
Newsmagazine for theinternational clientele,
partners and friends ofVoith Paper“twogether” is published twice annuallyin German, English, Chinese, Russian and
Finnish. Contributions by independent
authors do not necessarily reflect theopinion of the publisher. Please address allcorrespondence and inquiries to the editor.
Published by:Voith Paper Holding GmbH & Co. KG
Editor:Dr. Wolfgang Möhle, Corporate Marketing
Voith Paper Holding GmbH & Co. KG
Tel. (++49) 0751 83 37 00
Fax (++49) 0751 83 30 00
Escher-Wyss-Straße 25, D-88212 Ravensburg
wolfgang.moehle@voith.com
http://www.voithpaper.com
Design, layout and typesetting:
Manfred Schindler Werbeagentur
P.O. Box 1243, D-73402 Aalen
www.msw.de
Copyright 3/2006: No part of this publication
may be reproduced or copied by any means
whatsoever without the express permissionof the editor.

3/2006 MA Printed on chlorine-free bleached paper manufactured with Voith Paper machinery.

Issue 21, March 2006.