发明名称 Increased regrind use in coextruded structures
摘要 A laminate, a method for making the laminate and articles formed from the laminate are disclosed. The laminate comprises an outer layer, an optional adhesive layer, an inner layer, an intermediate regrind layer formed of a blend of the materials from which the other layers are formed, and, interposed between the outer layer and the intermediate regrind layer, there is a buffer layer which is formed from a blend of the materials from which the outer layer and the intermediate regrind layer are formed and which comprises at least about 5% of the material of the intermediate regrind layer. The outer layer is preferably polypropylene and the inner layer is preferably an ethylene vinyl alcohol copolymer.
申请公布号 US4999254(A) 申请公布日期 1991.03.12
申请号 US19900586848 申请日期 1990.09.21
申请人 RAMPART PACKAGING INC. 发明人 OFSTEIN, DAVID E.
分类号 B29B17/00;B32B27/00 主分类号 B29B17/00
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