IP Library › Granted Patent US 7,838,109
Granted Patent B2
US 7,838,109 · App. 10/583,450 · Granted Nov 23, 2010

Film for packing liquids or the like and method for manufacturing such a film

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Quick Facts
Patent No.
US 7,838,109
App. No.
10/583,450
Granted
Nov 23, 2010
Kind
B2
Abstract

Film for packaging liquid products or the like, which mainly consists of a first polyolefin layer, a jointing layer and a layer of polychlorotrifluoroethylene (PCTFE), wherein the PCTFE Layer has a thickness of at least 10 micrometer (μm) and whereby the film is obtained by means of extrusion lamination.

Claims (6)

1. Film for packaging liquid pharmaceutical or cosmetic products containing components with a large reactivity, comprising a first homo-polymeric polyolefin layer which is polyethylene or polypropylene, a jointing layer of a copolymer of ethylene and glycidyl methacrylate (EGMA) and a layer of polychloro-trifluoroethylene (PCTFE), wherein the PCTFE layer has a thickness of at least 10 micrometer (μm) and the film being extrusion laminated.

2. Film according to claim 1 , wherein the polyolefin layer and the jointing layer are co-extrusion laminated with the PCTFE layer.

3. Film according to claim 1 , wherein the PCTFE layer is made of a homopolymer PCTFE.

4. Film according to claim 1 , wherein the PCTFE layer has a thickness of at least 20 μm.

5. Film according to claim 1 , wherein the polyolefin is polyethylene.

6. Film according to claim 1 , wherein the polyolefin is polypropylene.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 22, 2007
From: DECLERCK, JOHAN WILLY
To: TEKNI-PLEX EUROPE NAAMLOZE VENNOOTSCHAP
Reel/Frame 019062/0882 →
Continuity (1)
Related Publication 20070141326A1 · Jun 21, 2007