Biaxially stretched film for packaging

Details Biaxially stretched film for packaging Biaxially stretched film for packaging

1995-09-12

1997-11-11

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428220, 4284758, 4284761, 4284763, 428515, 428516, 428520, 4284769, B32B 2734, B32B 2732

Patent

active

056861737

ABSTRACT:
A biaxially stretched film for packaging, having a thickness of not more than 40 .mu.m; comprising surface layers each made of a propylene-ethylene copolymer resin and an intermediate layer disposed therebetween made of a polyamide resin comprising an aromatic polyamide resin, and having thickness of 10 to 80% of the overall thickness of the biaxially stretched film; and obtained by a process comprising a coextrusion step, a rapid cooling step, and a stretching step.

REFERENCES:
patent: 4486552 (1984-12-01), Niemann
patent: 4908272 (1990-03-01), Harada et al.
patent: 5266387 (1993-11-01), Fujii et al.

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