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Electrostatic tension control of webs
   
Document Number
US Patent 7341217
Issued Date
March 11, 2008
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Abstract
An electrostatic charging system holds a film web to a roll without significant slippage, thus allowing for proper tension control of the web even with extreme differences in tension upstream and downstream of the motorized roll. The system can electrostatically transfer a web using motorized drum rolls with an internally integrated web severing knife.
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Number of Claims:
33
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Owner
Addex, Inc. (Newark, NY)
Published
March 11, 2008
Application Number
11/060,074
Filed
February 17, 2005
US Classification
242/532  
Int'l Classification
B65H   19/28   (20060101)  
Examiner
Assistant Examiner
USPTO Field of Search
242/416   242/419   242/420   242/420.5   242/527   242/527.1   242/527.2   242/532.3   242/532   242/532.2   242/421.4   226/42   226/94  
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