siegling transvent
ventilation belts

TRANSVENTFOR ENHANCED
MAT VENTILATION

Siegling – total belting solutions

SO NO AIR’S LEFT
IN THE MAT
During efficient chipboard and fibreboard production, there‘s no room fora weak link in the chain. Which is why
we enhanced material flow in the prepress with the extremely durable ventilation belts Siegling Transvent W01,
W02 and W03.
Forbo Siegling offers a one-stop solution with all
the pre-press belts you need – including perforated
ones – to produce chipboard and fibreboard.
The benefits are obvious:– One single order– One single transaction– One single service partner

Article number

Total thickness approx. [mm]Weight approx. [kg/m2]

Effective pull at 1% elongation(k1% relaxed) [N/mm width]dmin Z-splice [mm]*dmin woven splices [mm]*dmin woven pin splice [mm]*dmin HS-14 [mm]*Permissible
operating temperature [°C]Max. width supplied [mm]Material warp,
thickness [mm]Material werft,
thickness [mm]Weave

Air permeability [l/m2 s]

Air permeability [cfm]Antistatic properties

ATEX category 3G3D (Zone 2/22)

Product range Siegling Transvent

Transvent W01
blue

9004031.9

1.4

7.016050

10075–30/+1004500

Abralloy,
0.65+ 0.64

Abralloy,0.65

Twill2/22480 1)

375 3)●●

Transvent W02
blue900442

1.95

1.55

7.016050

10075–30/+100

4500

PES/Bronze, PES/Bronze,
0.65
0.8

Twill2/22750 1)

425 2)●●

Transvent W03
blue9004411.85

1.55

18.016050–75–30/+100

4500

PES/Bronze,0.65

Twill3/2

2200 1)

340 2)●●* without counter-bending

2PES, 0.341) dp = 200 Pa, 2) dp = 127 Pa, 3) dp = 124.5 PaGood ventilation
From a maximum dumping height, theventilation belt lowers the chip or fibre
mat onto the in-feed section expellingthe air evenly, without expelling chips
or fibres from the compressed mat.
Due to the air permeable, but strong
fabric structure with sealed edges, thebelt masters two key functions at thesame time: it ventilates and pre-compresses.

Siegling Transvent: a smooth surface, extremely
air permeable, flexible and conductive.

Ventilation and pre-compression belt in chipboard and fibreboard manufacture. The chip mat
is pre-compressed while conveyed to the press.

No soiling

Safe static discharge

Quick fitting

A high level of conductivity prevents
chips and fibres adhering to the mat,avoiding soiling and damage to thebelt.

Special warpwise-woven polyester- or
bronze threads make the belt highly
conductive and prevent electrostaticbuild-up. Hazardous situations involving a risk of fire cannot occur.
So safety is guaranteed.

Thanks to Forbo Siegling‘s provensplicing methods, the ventilation belt
can be fitted without dismantling thepre-press. Therefore, line downtimes
are negligible.
The belts are fast to exchange, reducing fitting time to a minimum.

➌➍

Woven splices
Woven splices are the perfect solution for complex finishing jobs. With their continuous fabricstructure, they leave no markings and guarantee
the air will pass evenly through the belt.

Z-splice (➂)
The principle: the belt ends are punch-cut toform Z-shaped fingers which intermesh to forma very strong and safe splice. The belt is madeendless without the seam marking the chip mat.

Hook splice (➃)
What makes the hook splice so exceptional isits extreme strength, long service life and easyhandling. It can be closed on the machinery, butdoes mark the chip mat slightly.

– Belts with woven splices (➀) are supplied
endless.

Siegling Transvent is usually supplied as an endless belt that is ready to use. For on-site fitting,
the Z-splice is supplied open. The Siegling Transilon heating press which is used for spreader
and prepress belts can also be used for Siegling
Transvent too.

Belts made endless with a hook splice are ideal
as quick-to-fit spares, but are however only
suitable for temporary operation.

Instead of downtimes for cleaning,productivity increases.

Splicing methods➊➋– The woven pin splice (➁) is made endless on
the machinery and can easily be removed.
Fitting on the machinery is not necessary.	Not possible on Siegling Transvent W03.

3

Siegling – total belting solutions
Committed staff, quality oriented organization and­production processes ensure the constantly high standardsof our products and services.

Our service – anytime, anywhere
Forbo Movement Systems employs around 2,500 people
in its group of companies. Our products are manufactured
in ten production facilities across the world.
You can find companies and agencies with warehouses andworkshops in over 80 countries.
Service points are located in more than 300 places worldwide.

Forbo Siegling GmbH
Lilienthalstrasse 6/8, D-30179 HannoverPhone +49 511 6704 0
www.forbo-siegling.com, siegling@forbo.com

01/16 · UDH · Reproduction of text or parts thereof only with our approval. Subject to change.

Ref. no. 240-2

Forbo Movement Systems complies with total quality management principles. Our quality management system has
ISO 9001 certification at all production and fabrication sites.
What’s more, many sites have ISO 14001 environmental
management certifi­cation.