Biaxially oriented multilayer polypropylene film

Details Biaxially oriented multilayer polypropylene film Biaxially oriented multilayer polypropylene film

2008-01-29

2008-01-29

Tarazano, D. Lawrence (Department: 1773)

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

Reexamination Certificate

active

07323252

ABSTRACT:
Disclosed is a biaxially oriented multilayer polypropylene film which has a substrate layer containing a polypropylene resin composition including 97 to 99.97% by weight of a propylene polymer (A) and 0.03 to 3% by weight of a surfactant and also has, on at least one side of this layer, a layer containing a polypropylene resin composition including 30 to 80% by weight of a propylene polymer (C) having a melting point of 150 to 170° C. and 20 to 70% by weight of a propylene-based random copolymer (D) having a melting point of 120 to 149° C. and including 1 to 14 mole % of ethylene and/or α-olefin.

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