Multi-laminate structure containing a scrap layer and containers made therefrom
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United States of America Patent
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-
Nov 10, 1987
Issued Date -
N/A
app pub date -
Feb 15, 1984
filing date -
Mar 4, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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