Process for producing polypropylene laminated film

Details Process for producing polypropylene laminated film Process for producing polypropylene laminated film

1998-03-13

1999-12-14

Nakarani, D. S.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Layered, stratified traversely of length, or multiphase...

26417315, 26417319, 156229, 156324, 526348, 5263481, B32B 2732

Patent

active

060012935

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
patent: 4726999 (1988-02-01), Kohyama et al.
patent: 4740421 (1988-04-01), Suzuki
patent: 5336746 (1994-08-01), Tsutusi et al.
patent: 5472792 (1995-12-01), Tsurutani
patent: 5486415 (1996-01-01), Kimura
patent: 5773129 (1998-06-01), Wakamastsu et al.

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