Extrusion method and apparatus for recycling waste plastics and

Details Extrusion method and apparatus for recycling waste plastics and Extrusion method and apparatus for recycling waste plastics and

1991-03-05

1993-05-18

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524300, 524424, 521 74, 521143, C08K 510

Patent

active

052122239

ABSTRACT:
An extrudable composition comprised of waste polyolefins and an alkali metal bicarbonate salt/solid, saturated fatty acid foaming agent system, and a method for extruding such extrudable composition wherein the fatty acid/bicarbonate foaming agent system foams the waste polyolefins during the extrusion to produce end products which have qualities closely simulating natural lumber suitable for use as construction materials.

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patent: 4588754 (1986-05-01), Liu
patent: 4650816 (1987-03-01), Bertrand
patent: 4940736 (1990-07-01), Alteepping et al.
patent: 4956396 (1990-09-01), Kim et al.
"Polymer Processes"; ed. C. E. Schildknecht, Interscience Publishers Inc. (1956) p. 619.

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