Web conveyance method and apparatus using same
Assignee3M Innovative Properties Company
InventorsKevin B. Newhouse, Bruce E. Tait, John C. Clark
Life of this patent
Estimating the term…
Abstract
A method for conveying a web using an engagement cover (10) comprising resilient looped pile (16) engagement surface. Also, web conveying roller (12) having an engagement cover thereon.
Claims17
A method for conveying a web comprising:
- (a) providing a web material wherein said web is an optical grade film selected from the group consisting of polyester, copolyesters, and combinations thereof;
- (b) providing at least one roller having an engagement cover comprising a resilient looped pile engagement surface wherein said engagement surface is a knit fabric comprising a woven base layer having first and second faces and a resilient looped pile protruding from said first face, and wherein said looped pile has a loop height of from about 0.4 to about 0.8 mm, one loop per stitch, and at least 25 stitches per inch, and comprises fibers having a denier of between about 100 and about 500;
- (c) configuring said web material into passing configuration;
- and
- (d) passing said web through engaging contact with said engagement surface.
An apparatus, the apparatus comprising a web wherein the web is an optical film selected from the group consisting of polyester, copolyesters, and combinations thereof, and a roller comprising a core and a resilient looped pile engagement cover comprising a resilient looped pile engagement surface wherein said engagement surface is a knit fabric comprising a woven base layer having first and second faces and a resilient looped pile protruding from said first face, and wherein said looped pile has a loop height of from about 0.4 to about 0.8 mm, one loop per stitch, and at least 25 stitches per inch, and comprises fibers having a denier of between about 100 and about 500.
Dependencies are inferred from the claim text.