Structure comprising a binder layer non-delaminable with...

Details Structure comprising a binder layer non-delaminable with... Structure comprising a binder layer non-delaminable with...

2005-11-01

2005-11-01

Jackson, Monique R. (Department: 1773)

Stock material or miscellaneous articles

Composite

Of metal

C428S035800, C428S035900, C428S457000, C428S463000, C428S516000, C428S520000, C156S244110, C156S244240, C220S359100, C220S359300, C220S359400

Reexamination Certificate

active

06960392

ABSTRACT:
A multilayer structure of, in succession, a metal layer or a metallized-substrate layer, a layer of a polypropylene-based binder extrusion-coated at a rate of more than 100 m/min. and optionally a polypropylene layer, the metal or metallized layer and the binder layer being made non-delaminable by heat treating the structure. The extrudable binder contains by weight: (A) 5 to 30% of a copolymer of ethylene and one or more comonomers chosen from the group of carboxylic acid esters, vinyl esters and dienes in particular the ethylene/alkyl (meth)acrylate/maleic anhydride terpolymer; (B) 40 to 93% of a stretchable polypropylene; and (C) 2 to 30% of a polypropylene functionalized by an unsaturated carboxylic acid anhydride, especially maleic anhydride; the MFI of the composition being between 10 and 50 g/10 min. (at 230° C./2.16 kg). the multi-layer structure is useful for the production of packages.

REFERENCES:
patent: 4398644 (1983-08-01), Claude et al.
patent: 4403710 (1983-09-01), Hirota et al.
patent: 4764546 (1988-08-01), Mitsuno et al.
patent: 5206051 (1993-04-01), Theisen et al.
patent: 5235149 (1993-08-01), Boehrer
patent: 5367022 (1994-11-01), Kiang et al.
patent: 6224973 (2001-05-01), Trouilhet
patent: 0 258 990 (1988-03-01), None
patent: 0 485 126 (1992-05-01), None
patent: 4-198243 (1992-07-01), None
Derwent Abstract, 1992-288980, JP 04198243, Jul. 1992.
JP 04-198243—Patent Abstract of Japan.
JP 01-082931—Patent Abstract of Japan.

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