Froth process for continous manufacture of polyurethane foam sla

Details Froth process for continous manufacture of polyurethane foam sla Froth process for continous manufacture of polyurethane foam sla

1994-07-08

1997-09-09

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 50, 264 458, B29C 4428

Patent

active

056652879

ABSTRACT:
A process and a system for the continuous manufacture of polymeric foams. Reactive chemical components and additives comprising a low boiling blowing agent are mixed under pressure; the mixture is then frothed before chemical reaction takes place by feeding the mixture through a pressure equalizing and frothing device comprising a pressure-drop zone opening into a frothing cavity having an output aperture to discharge the froth onto a moving substrate.

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