High oxygen transmission biaxially oriented polypropylene film

Details High oxygen transmission biaxially oriented polypropylene film High oxygen transmission biaxially oriented polypropylene film

2006-07-18

2006-07-18

Seidleck, James J. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S249000, C525S322000, C526S351000, C526S352000, C428S034600, C428S036910, C428S515000

Reexamination Certificate

active

07078463

ABSTRACT:
A biaxially oriented polyolefin multilayer film containing: (a) a core layer containing (i) greater than about 0% by weight to about 50% by weight of an isotactic polypropylene-containing impact copolymer, (ii) about 10% by weight to 70% by weight of an alpha olefin/polypropylene copolymer-containing thermoplastic olefin and (iii) about 10% by weight to 70% by weight of an isotactic propylene homopolymer; and (b) at least one polyolefin skin layer adjacent to the core layer is disclosed.

REFERENCES:
patent: 5948839 (1999-09-01), Chatterjee
patent: 6232402 (2001-05-01), Demeuse
patent: 6348271 (2002-02-01), Nakata et al.
patent: 6395071 (2002-05-01), Niijima et al.
patent: 6410136 (2002-06-01), DeMeuse
patent: 6485817 (2002-11-01), DeMeuse
patent: 6514625 (2003-02-01), DeMeuse
patent: 2005/0142372 (2005-06-01), Su et al.

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