Making sheet with moisture barrier properties coextruded from sc

Details Making sheet with moisture barrier properties coextruded from sc Making sheet with moisture barrier properties coextruded from sc

1982-02-04

1983-09-06

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of gaseous process material

264145, 264171, 2642102, 264DIG69, 4251311, 4251335, 425DIG46, B29C 2900

Patent

active

044028890

ABSTRACT:
Coextruding an inexpensive multilayered plastic sheet with outer layers of scrap material and a central layer of unqualified scrap having sufficient polyolefin content to provide a moisture barrier.

REFERENCES:
patent: 3132194 (1964-05-01), Edmonds et al.
patent: 3271482 (1966-09-01), Harada et al.
patent: 3567815 (1971-03-01), Frank
patent: 3723582 (1973-03-01), Winstead
patent: 3883624 (1975-05-01), McKenzie et al.
patent: 3954923 (1976-05-01), Valyi
patent: 3993810 (1976-11-01), Bonis
patent: 4101050 (1978-07-01), Buckler et al.
patent: 4234663 (1980-11-01), Catte et al.
patent: 4250129 (1981-02-01), Winstead
patent: 4287147 (1981-09-01), Hungerford

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