Polypropylene stretched film

Details Polypropylene stretched film Polypropylene stretched film

1991-06-05

1992-05-19

Seccuro, Carman J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525297, 525 88, 525 95, C08L 2312, C08L 2314, C08L 5300, C08J 518

Patent

active

051150271

ABSTRACT:
The polypropylene stretched film of the present invention is prepared by stretching a composition comprising a crystalline propylene polymer and 0.1 ppm by weight to 10% by weight of a nucleating agent, the composition having a melting point of 160.degree. C. or more, a crystallization temperature of 128.degree. C. or more and a 20.degree. C. xylene soluble portion of 3.0% by weight or less. The film has a high rigidity and a beautiful appearance as well as the characteristic properties inherent to crystalline propylene polymers. The film can be suitably used for food packaging and textile packaging.

REFERENCES:
patent: 4551501 (1985-11-01), Shiga et al.
patent: 4603174 (1986-07-01), Okada et al.
patent: 4748207 (1988-05-01), Kakugo et al.

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