Laminates containing coextruded scrap

B - Operations – Transporting – 29 – B

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18/764

B29B 17/00 (2006.01) B32B 27/00 (2006.01) B32B 27/06 (2006.01) B65D 1/42 (2006.01) C08J 11/06 (2006.01)

Patent

CA 1296499

LAMINATES CONTAINING COEXTRUDED SCRAP ABSTRACT OF THE DISCLOSURE A continuous plastic laminate having improved stiffness at use temperature, comprising at least three melt coextruded sheets, each comprising a thermoplastic polymer or polymer blend, the outside sheets having a higher stiffness at use temperature than at least one inside sheet, wherein said continuous laminate contains laminate scrap derived from the production of said laminate, said scrap being incorporated therein by melt coextruding said scrap as at least one additional discrete inside layer or by melt coextruding said scrap as part of at least one of said melt coextruded sheets, whereby the stiffness at use temperature of said scrap-containing laminate is increased relative to a plastic laminate identical thereto except for the incorporation of said scrap, and wherein said thermoplastic polymer or polymer blend comprises a polyarylethersulfone, a poly(aryl ether), a polyarylate, a polyetherimide, a polyester, an aromatic polycarbonate, a styrene resin, a poly(alkyl acrylate), a polyhydroxyether, a polyamide, a poly(arylene sulfide), a crystalline polyolefin, a polyphenylene oxide, or blends thereof. 87079CTT0101

532807

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