Process for the production of foam cushions from different fluid

Details Process for the production of foam cushions from different fluid Process for the production of foam cushions from different fluid

1988-08-01

1991-05-28

Dawson, Robert A.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 464, 264 466, B29C 6722

Patent

active

050193058

ABSTRACT:
A process for the production of foam cushions from different fluid reaction mixtures comprising introducing a first and at least one other reaction mixture into a mold cavity and leaving the mixtures to react to form a cushion having zones of differing elasticity or rigidity characterized in that the reaction mixtures are not introduced into the mold cavity until they have started to cream up and are already viscous.

REFERENCES:
patent: 3786122 (1974-01-01), Berg
patent: 4180631 (1979-12-01), Yukuta et al.
patent: 4190697 (1980-02-01), Ahrens
patent: 4405681 (1983-09-01), McEvoy
patent: 4714574 (1987-12-01), Tenhagen

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