Pre-expanded particles of non-crosslinked linear low density pol

Details Pre-expanded particles of non-crosslinked linear low density pol Pre-expanded particles of non-crosslinked linear low density pol

1988-10-13

1990-11-06

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 58, C08J 918

Patent

active

049687239

ABSTRACT:
A pre-expanded particle of a non-crosslinked linear low density polyethylene having an average cell diameter as large as 120 to 1,200 .mu.m which can be molded, without further imparting an expandability prior to molding or without aging under pressure, by heating in a closed mold permeable to a fluid heating medium such as steam to form a well bonded unitary cellular molded article having a good appearance, a high expansion ratio and improved heat resistance and mechanical property with a slight volumetric shrinkage.

REFERENCES:
patent: 4448901 (1984-05-01), Senda et al.
patent: 4524154 (1985-06-01), Maeda et al.
patent: 4540718 (1985-10-01), Senda et al.
patent: 4617322 (1986-10-01), Senda et al.

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