Packaging material with a foamed polyolefin layer

Details Packaging material with a foamed polyolefin layer Packaging material with a foamed polyolefin layer

2006-07-04

2006-07-04

Cheng, Victor (Department: 1771)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S317700, C428S318400, C428S318600, C428S319700

Reexamination Certificate

active

07070852

ABSTRACT:
The invention relates to a multilayer film comprising the following sequence of layers:A) a basis layer of polyolefin foam,B) a layer based on at least one of the polyolefins of the foam layer A),C) optionally a tie layer based on a polyolefin,D) optionally an adhesive layer,E) optionally a gas- and/or flavortight barrier layer,F) an adhesive layer,G) an optionally sealable and/or peelable surface layer,whereby the total thickness of layers A) and B) ranges from 0.5 to 2 mm and the thickness of layer B) ranges from ⅙ to ½ of the thickness of layer A).

REFERENCES:
patent: 6132539 (2000-10-01), Laurent et al.
patent: 37 22 139 (1989-01-01), None
patent: 0 570 222 (1993-11-01), None
patent: 0 570 222 (1993-11-01), None
patent: 96 25290 (1996-08-01), None
patent: WO 96/25290 (1996-08-01), None
Derwent Abstract for DE 3722 139 entitled “Thermoplastic Foamed Film Partic. For Carrier Bags, etc. by Extruding in at Least 2 Layers, one Contg, Blowing Agent and One Contg. No Blowing Agent”, Patent Assignee: Stoll Kunststoffe.

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