Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
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.
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JP 04-198243—Patent Abstract of Japan.
JP 01-082931—Patent Abstract of Japan.
Le Du Yves
Perret Patrice
Arkema
Jackson Monique R.
Millen White Zelano & Branigan P.C.
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