Low coefficient of friction material and plastic films...

Details Low coefficient of friction material and plastic films... Low coefficient of friction material and plastic films...

C - Chemistry, Metallurgy

08

L

400/1715, 117/17

C08L 91/06 (2006.01) C09D 191/06 (2006.01)

Patent

CA 2009462

F-5212-L ABSTRACT A coating for a thermoplastic film includes an acrylic copolymer, a finely divided wax in the amount of 30 to 15%, preferably 30 to 60%, by weight based on the total weight of the copolymer, a finely divided inorganic solid selected from the group consisting of silica, diatomaceous earth, calcium silicate, bentonite and finely divided clays in the amount of 5 to 25% by weight based on the total weight of the copolymer and either talc or Syloid in the amount of 0 to 1% based on the total weight of the copolymer. The coated film has a low haze, non-blocking and consistently low coefficient of friction for good machinability. The coating is applied to a surface of the film as an aqueous dispersion preferably by a gravure coater placed between the machine direction orienter and the transverse direction orienter in an extruding system for the film. This film can be laminated to another film such as glassine or a plastic film.

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