Process for the preparation of foamed propylene polymer articles

Details Process for the preparation of foamed propylene polymer articles Process for the preparation of foamed propylene polymer articles

1993-09-10

1994-06-28

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 454, 521143, 521144, 521919, C08J 914, B29D 900

Patent

active

053247531

ABSTRACT:
Foamed propylene polymer articles are prepared by subjecting pre-foamed beads, that consist essentially of propylene polymers having a melt strength from 5 to 40 cN, to thermoforming by sintering.

REFERENCES:
patent: 4840973 (1989-06-01), Kuwabara et al.
patent: 4916198 (1990-04-01), Scheve et al.
patent: 5026736 (1991-06-01), Pontiff
patent: 5047485 (1991-09-01), DeNicola

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