Polypropylene laminated film

Details Polypropylene laminated film Polypropylene laminated film

1994-12-21

1998-06-30

Zimmerman, John J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428332, 428515, 428523, 428500, 526 90, 526351, 526348, B32B 702, B32B 2708, B32B 2732, C08F21006

Patent

active

057731292

ABSTRACT:
A polypropylene laminated film containing a crystalline polypropylene layer and, laminated on at least one side of the layer of the crystalline polypropylene, a layer of a copolymer of propylene and at least one .alpha.-olefin of from 4 to 10 carbon atoms having a specific composition, melt flow rate and molecular weight distribution in which the .alpha.-olefin content in the cold xylene soluble portion of the random copolymer is less than 1.7 times the .alpha.-olefin content in the copolymer and the random copolymer satisfies the mathematical expression,

REFERENCES:
patent: 4675247 (1987-06-01), Kitamura et al.
patent: 4740421 (1988-04-01), Suzuki et al.
patent: 5472792 (1995-12-01), Tsurutani et al.
patent: 5486415 (1996-01-01), Kimura et al.

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