siegling extremultus
flat belts

FLASH STAR
A FIRM GRIP ON STATIC ELECTRICITY

Siegling – total belting solutions

Polyester fabric tension member
with conductive elements

Alternative tension member material: polyamide
sheet or elastic urethane

Application-driven
surface patterns

The whole belt is
conductive in all
three directions

Durable coatings witha large proportion of
conductive particles

Arrows = directionsof conductivity

2

FLASH STAR –A FIRM GRIP ON STATIC ELECTRICITY
Flash Star flat belts play a major role in containing static electricity inpower transmission and conveying systems. With excellent conductivity inall three directions, they help to ensure ESD* compliance of the machineryand to prevent unwelcome side effects.
If you use power transmission and conveyor belts, it’s impossible to avoid
static electricity building up. This phenomenon is called triboelectric charging. It occurs when different materials
come into contact with one anotherand then separate again. During conveying, the products concerned canalso have the same impact.

Flash Star flat belts make designing ESD-compliant machinery easier.
Typical consequences of electrostatic build-up and uncontrolled discharge
can be as follows:– malfunctions when processing foil and paper products
because they stick to one another or to the belt
– soiling due to dust, lint etc.
– electric shocks– damage to electronic components(i.e. the products conveyed and machine components)– fires and explosions

Electrostatic build-up
from the products conveyed.

* ESD = Electrostatic discharge

Electrostatic build-up
due to triboelectric charging.

Hazards due to uncontrolled
discharge of static electricity.

FLASH STAR –CONDUCTIVITY RIGHTTHROUGH THE BELT TOOConductivity right through the belt
significantly enhances the controlled
discharge of static electricity.
Electricity in the belt is discharged
directly via electrically conductive
components on the machinery (e.g.
rollers, supports). Extra mechanicalcomponents like metallic idlers, orbrushes to discharge the build-up
of static electricity aren’t necessary.

ESD-protected product:
this product can discharge electrostaticbuild-up in a controlled manner.
The belt’s resistance is under 109 Ωand compensates for differences inelectricity potential in a short spaceof time.

The properties		

The advantages

conductive in all three directions,even through the belt		

improves discharge, facilitates
ESD-compliant machinery design

supports the controlled
discharge of static electricity 		enhances process reliability andsafety, e.g. for paper and foil

minimises the risk of
uncontrolled discharge		

prevents electric shocks, sparks anddamage to electronic components

also available in High Grip andMedium Grip versions

a wide range of applications

Specific shaft load **[N/mm belt width]

Elongation at fitting[% of belt length]

Weight approx. [kg/m2]

Permitted operating
temperature [°C]Electrostatic property

14141440
1414441220
880.3 – 2.00.3 – 2.0
0.3 – 2.0
0.3 – 2.0
0.3 – 2.0
0.3 – 2.0

1.40
1.40
1.45
2.45
1.25
1.60

–20/+70–20/+70–20/+70–20/+70–20/+70–20/+70

HC+
HC+
HC+
HC+
HC+
HC+

●

855635

1.60

20

4

0.6–1.5

1.30–20/+80

HC+●●

855631855636

1.10
1.45

20
140.250.8

3.0 – 8.0
3.0 – 8.0

1.20
1.45

–20/+60–20/+60

HC+
HC+

●

●
●

Drag belts

dmin [mm]*1.351.35
1.40
2.30
1.20
1.50

Machine tapes

Total thickness approx.
[mm]

822151822154822156822171822173822174

The Flash Starrange

Folder gluer belts

Article number

Special characteristics
and applications

●
●
●
●
●
●

●
●

E line (with polyester tension member)
RR 4E-14 HC+ FSTR grey
RR 4E-HC+ NSTR/NSTR grey
RR 12E-14 HC+ FSTR grey
TR 20E-23 HC+ FBRC/FSTR black/grey
UR 8E-12 HC+ FSTR green/grey
UR 8E-15 HC+ FSTR/NSTR green/grey
P line (with polyamide tension member)
NN 4P-HC+ grey
Elastic line (with urethane tension member)
UU 20U-HC+ FSTR/FSTR black
UR 40U-HC+ GSTR/NSTR black/grey●●Please note: the values stated are nominal and can fluctuate in a belt whose width is a result of production processes. Our products areconstantly adapted to market requirements. Consequently, changes in technical parameters can occasionally occur. Therefore, please see thecurrent product data sheets for specific information on designs and calculations.
Type code

LegendThe values stated were identifiedin standard ambient conditions(23 °C, 50 % rel. humidity)

R R 4 E -		 HC+ NSTR / NSTR grey
N N 4 P -		 HC+ 				grey
U R 40 U -		 HC+ GSTR / NSTR black/grey
Foodproperties
Colour top face
Colour overall or underside
Surface pattern top face*	Lower ­temperatures requirelarger drum diameters. For thePolyamid line, this also applies
in the case of low humidity.
**	Relaxed specific shaft load at
1 % elongation at fitting and180° arc of contact in N/mm
belt width.

U= Polyester= Polyester web= Polyamide P=	High Grip orMedium Grip
= Polyurethane

HC+ =	Conductive beltsurfaces +conductive overthe thickness
FSTR = Fine texture
GSTR = Coarse texture
NSTR = Normal texture

Surface pattern overall or underside
Electrostatic property
Total thickness [1/10 mm]
Material of tension member
Type number
Coating top face
Coating underside

Classification of our products’ electrostatic characteristics(Measurements compliant with DIN EN ISO 21178)
Non-antistatic (NA)Belt material with isolating properties.
Antistatic (no special abbreviation)
Belt material with electrically conductive components within the belt
or on the surface.
Conductivity of the whole belt lengthways RDi < 3*108 Ω.
Highly conductive (HC)
Conductive top face, usually conductive underside too.
Must be antistatic as well.
Conductive on the surface lengthways ROB < 3*108 Ω.
Highly conductive plus (HC+)
Conductive top face, underside and through the belt too.
Has to be highly conductive on both sides.
Conductive right through the belt RD < 109 Ω.

ENPR

Flash Star

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
and workshops 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

01/24 · UDH · Reproduction of text or parts thereof only with our approval. Subject to change.

Ref. no. 252-2

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.