Polypropylene film and process for making same

Details Polypropylene film and process for making same Polypropylene film and process for making same

C - Chemistry, Metallurgy

08

J

C08J 5/18 (2006.01) B29C 55/02 (2006.01) B29C 55/06 (2006.01) B32B 27/32 (2006.01) C08J 7/06 (2006.01) C08J 7/18 (2006.01) C08L 23/08 (2006.01)

Patent

CA 2086166

F-6503 -L (PAC) ABSTRACT OF THE DISCLOSURE POLYPROPYLENE FILM AND PROCESS FOR MAKING SAME A thermoplastic film comprising a base layer of a thermoplastic resin which comprises antifogging, heat-sealable polypropylene film wherein the antifog agent is a polyglycerol ester or sorbitan ester of fatty acids. The resultant film, which has good clarity, persistent antifogging characteristics, and excellent heat sealability, is useful for packaging refrigerated foods. The disclosure also provides a process for making the film in which the polypropylene-containing thermoplastic resin is extruded into a sheet, said sheet oriented in the longitudinal direction to form a monoaxially oriented film, said film containing said polyglycerol ester or sorbitan ester of fatty acids and orienting said film in the transverse direction.

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