Biaxially-oriented polypropylene film with high mechanical stren

Details Biaxially-oriented polypropylene film with high mechanical stren Biaxially-oriented polypropylene film with high mechanical stren

1990-06-22

1992-06-02

Buffalow, Edith L.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428516, 428910, 428349, 524584, 15624411, B32B 712

Patent

active

051185660

ABSTRACT:
A biaxially-oriented film with high mechanical strength, which includes 69 to 94.99% by weight of a polyolefin, 5 to 30% by weight of a natural or synthetic resin having a softening point in the range from 70.degree. to 170.degree. C., and 0.01 to 1% by weight of a nucleating agent, based on the total weight of the film. A method for producing this film includes biaxially drawing the film at temperatures below the melting point of the polyolefin.

REFERENCES:
patent: 3937762 (1976-02-01), Nahmias et al.
patent: 4451533 (1984-05-01), Wong et al.
patent: 4567089 (1986-01-01), Hattori et al.

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