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US 2004/0166337 A1Published application
Biaxially oriented polypropylene high barrier metallized film for packaging
AssigneeToray Plastics (America), Inc.
InventorsKeunsuk P. Chang, Tien-Kuei Su
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Abstract
A laminate film having a high crystalline propylene homopolymer resin layer of greater than about 93% isotactic content having a first surface and a second surface; a polyolefin resin layer disposed on the first surface, said polyolefin resin layer having a discharge-treated surface; a metal layer having an optical density of at least about 2.6 deposited on the discharge-treated surface of said polyolefin resin layer; and a heat sealable layer or a winding layer disposed on the second surface is disclosed.
Claims39
A laminate film comprising:
- high crystalline propylene homopolymer resin layer of isotactic content greater than about 93% having a discharge-treated surface on one side of said high crystalline propylene homopolymer resin layer;
- and
- a metal layer having an optical density of at least about 2.6 deposited on said discharge-treated surface.
A laminate film comprising:
- a high crystalline propylene homopolymer resin layer of greater than about 93% isotactic content having a first surface and a second surface;
- a polyolefin resin layer disposed on the first surface, said polyolefin resin layer having a discharge-treated surface;
- a metal layer having an optical density of at least about 2.6 deposited on the discharge-treated surface of said polyolefin resin layer;
- and
- a heat sealable layer or a winding layer disposed on the second surface.
2 more elements
A laminate film comprising:
- a high crystalline polypropylene resin layer of greater than about 93% isotactic content having a discharge-treated surface;
- and
- a metal layer having an optical density of at least about 2.6 deposited on said discharge-treated surface;
- wherein the laminate film has a barrier durability under 12% elongation of 46.5 cc/m2/day or less oxygen transmission through the laminate film.
1 more element
Dependencies are inferred from the claim text.