Multi-laminate structure containing a scrap layer and containers

Details Multi-laminate structure containing a scrap layer and containers Multi-laminate structure containing a scrap layer and containers

1984-02-15

1987-11-10

Buffalow, Edith

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

426127, 428349, 428516, 428518, 428522, 264515, 264DIG69, B27N 502

Patent

active

047057084

ABSTRACT:
A multi-layer laminate structure comprises a separate layer of scrap produced from the several thermoplastic resins used in making the laminate structure. In a preferred construction, the multi-layer laminate structure comprises an outer thermoplastic polyolefin layer, an inner thermoplastic polyolefin layer and an intermediate oxygen barrier layer preferably made of ethylene-vinyl alcohol copolymer. An adhesive layer bonds the barrier layer to the inner polyolefin layer and a separate scrap layer is disposed interiorly of the outer polyolefin layer. A second adhesive layer bonds the scrap layer to the intermediate barrier layer. Containers having excellent oxygen barrier properties and good transparency are made by forming a parison from the multi-layer laminate structure and blow molding the parison to the desired container shape.

REFERENCES:
patent: 3882259 (1975-05-01), Nohara et al.
patent: 3940001 (1976-02-01), Haefner et al.
patent: 4234663 (1980-11-01), Catte et al.
patent: 4239826 (1980-12-01), Knott, II et al.
patent: 4254169 (1981-03-01), Schroeder
patent: 4287147 (1981-09-01), Hungerford
patent: 4289830 (1981-09-01), Knott, II

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