Polymeric multilayer sheet suitable for the manufacture of micro

Details Polymeric multilayer sheet suitable for the manufacture of micro Polymeric multilayer sheet suitable for the manufacture of micro

1987-01-15

1989-11-07

Buffalow, Edith

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

428323, 428516, B27N 502

Patent

active

048791474

ABSTRACT:
A multilayer plastic sheet adapted for the manufacture of containers for food products to be cooked or reheated in microwave ovens is disclosed wherein the sheet has at least one layer of a propylene polymer composition bonded to the surface of a styrene polymer layer, the propylene polymer layer having incorporated therein about 20 to about 40 percent by weight of an inorganic filler such as talc, the filled propylene polymer and the styrene polymer layer having a melt flow substantially equal to the other and the thickness of the layers being at a ratio of from about 60:40 to about 40:60.

REFERENCES:
patent: 4080359 (1978-03-01), Yui et al.
patent: 4292358 (1981-09-01), Bonis
patent: 4440824 (1984-04-01), Bonis
patent: 4464439 (1984-08-01), Castelein

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