Making coextruded sheets and containers

Details Making coextruded sheets and containers Making coextruded sheets and containers

1981-12-18

1984-02-07

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264171, 264322, 4251311, 4251335, 428 35, B29C 1702

Patent

active

044302886

ABSTRACT:
A multilayered thermoplastic sheet suitable for thermoforming into containers, the sheet being simply and expeditiously prepared and provided with consistent and reliable bonds between layers in a single process step by coextruding a layer of a polyolefin having moisture barrier properties and a specific gravity greater than 0.9 with a polyester layer, to provide chemical resistance, microwave heatability, and quick and inexpensive thermoforming for the multilayered sheet.

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