Modified polyolefin films

Details Modified polyolefin films Modified polyolefin films

2005-07-19

2005-07-19

Nutter, Nathan M. (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...

C525S217000, C525S222000, C525S238000, C525S239000, C525S240000, C525S241000

Reexamination Certificate

active

06919406

ABSTRACT:
Disclosed are techniques and related material blends for improving adhesion between a polyolefin film and a pressure sensitive adhesive, and also significantly decreasing the coefficient of thermal expansion of a polyolefin film by modifying the chemical properties of the film. Specifically, particular amounts of a modifying polymer and/or copolymer such as ethylene vinyl acetate are incorporated into the polyolefin film. The polyolefin film may for instance be either a polyethylene or polypropylene film.

REFERENCES:
patent: 3987122 (1976-10-01), Bartz et al.
patent: 4299930 (1981-11-01), Boggs
patent: 4551380 (1985-11-01), Schoenberg
patent: 4981231 (1991-01-01), Knight
patent: 6380296 (2002-04-01), Inada

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