Process for forming functional fluid and solid-containing thermo

Details Process for forming functional fluid and solid-containing thermo Process for forming functional fluid and solid-containing thermo

1984-08-24

1985-09-24

Anderson, Philip

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 50, 264141, 264211, 264DIG5, 424 2, 424 78, 424 83, 521 99, 521143, 521917, 521918, B29D 2700

Patent

active

045433674

ABSTRACT:
Described is a process for preparing extruded functional fluid and solid-containing thermoplastic foamed particles using chemical blowing agents or direct gas extrusion processes, uses of such foamed particles and articles produced from said foamed particles. The process described involves the use of a single screw or double screw extruder wherein the resin particles are added upstream from the functional fluid or solid which, in turn, is added to the extruder upstream from the point of addition of the liquid or gaseous blowing agent.

REFERENCES:
patent: 3055297 (1962-09-01), Leeds
patent: 3287477 (1966-11-01), Vesilind
patent: 3725311 (1973-04-01), Grubb
patent: 4184099 (1980-01-01), Lindauer et al.
patent: 4256726 (1981-03-01), Kato et al.
patent: 4328319 (1982-05-01), Osipow et al.
patent: 4388272 (1983-06-01), Gesteland
patent: 4411855 (1983-10-01), Fiebig, Jr. et al.
patent: 4460572 (1984-07-01), Derby et al.

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