Polyolefin particle foam

Details Polyolefin particle foam Polyolefin particle foam

1996-12-04

1998-06-30

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 60, 521 79, 521143, C08J 922

Patent

active

057734810

ABSTRACT:
In a process for producing polyolefin foam particles, partially foamed particles are produced in a first stage by extrusion of a polyolefin containing solid blowing agents, and these are then further foamed in the second stage using steam.

REFERENCES:
patent: 4968723 (1990-11-01), Senda et al.
patent: 5026736 (1991-06-01), Pontiff
patent: 5468781 (1995-11-01), Sugano et al.
patent: 5605937 (1997-02-01), Knaus

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