Static charges on unwinds of web processing machines
1
VALENCE ELECTRONS PRIVATE LIMITED 32 K R Colony, Domlur Layout, Bangalore 560 071, India T: +91-80-4125 6570 E: [email protected] W: www.ategroup.com/valence Registered Office: 43 Dr V B Gandhi Marg, Fort, Mumbai 400 023, India CIN: U74999MH2000PTC127595 Application note Published date: 31-12-2016 | Rev: 1A Page 1 Static charges on unwinds of web processing machines Problem Electrostatic charges are common on unwinds, due to the process of separation of the web at the unwinder. The surface voltage can be as much as ±50 kV, or even higher. This may hamper the process ahead, or create operator hazard, or pose the risk of fire, etc. Hence it is important to eliminate static charges. Solution Valstat ® VS 20 (up to 300 m/min) or Valstat ® VR 20 (up to 1200 m/min) AC static eliminating bars provide an effective solution in nullifying the effect of static charges in this application. It is recommended to install two static eliminating bars on the web path after unwinder as shown in the schematic above. Optionally, Valstat ® VR 80 long range DC static eliminating bars are now available for low and high speed applications.
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Transcript of Static charges on unwinds of web processing machines
VALENCE ELECTRONS PRIVATE LIMITED 32 K R Colony, Domlur Layout, Bangalore 560 071, India T: +91-80-4125 6570 E: [email protected] W: www.ategroup.com/valence Registered Office: 43 Dr V B Gandhi Marg, Fort, Mumbai 400 023, India CIN: U74999MH2000PTC127595
Application note
Published date: 31-12-2016 | Rev: 1A
Page 1
Static charges on unwinds of web processing machines Problem Electrostatic charges are common on unwinds, due to the process of separation of the web at the unwinder.
The surface voltage can be as much as ±50 kV, or even higher. This may hamper the process ahead, or
create operator hazard, or pose the risk of fire, etc. Hence it is important to eliminate static charges.
Solution Valstat
® VS 20 (up to 300 m/min) or Valstat
® VR 20 (up to 1200 m/min) AC static eliminating bars provide an
effective solution in nullifying the effect of static charges in this application. It is recommended to install two
static eliminating bars on the web path after unwinder as shown in the schematic above.
Optionally, Valstat® VR 80 long range DC static eliminating bars are now available for low and high speed
applications.
