Polypropylene film

Details Polypropylene film Polypropylene film

1989-04-03

1990-05-22

Buffalow, Edith

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524223, 428500, C08J 520

Patent

active

049278720

ABSTRACT:
A monolayer polypropylene film obtained by melt extrusion from a composition comprising 100 parts by weight of a crystalline polypropylene and, incorporated therein, a slipping agent {A} having a melting point of 100.degree. to 125.degree. C. and a slipping agent {B} having a melting point of 70.degree. to 90.degree. C. in a total amount of 0.05 to 1.0 part by weight, the initial coefficient of friction of said film being 0.7 or below and the coefficient of friction after heating at 60.degree. C. being 1.0 or below; and a multilayer film composed of said polypropylene film layer having said composition and said characteristics and a substrate material layer.

REFERENCES:
patent: 3176021 (1965-03-01), Volungis et al.
patent: 3562291 (1971-02-01), Lutzman et al.
patent: 3763059 (1973-10-01), Needham et al.
patent: 4345046 (1982-08-01), Ejk et al.

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