System for producing a foamed isocyanate-based polymer

Details System for producing a foamed isocyanate-based polymer System for producing a foamed isocyanate-based polymer

1996-03-22

1998-01-20

Davis, Robert

Plastic article or earthenware shaping or treating: apparatus

With mechanical means forming or expanding pores

425256, B29C 3106

Patent

active

057098921

ABSTRACT:
A system for producing a foamed isocyanate-based polymer includes a base line comprising a first mixing device operable in a first mode and a second mode and having an active hydrogen-containing compound input and an isocyanate input. A complementary line is provided and includes a second mixing device having a filler material input. In the first mode, the first mixing device receives a feed from the active hydrogen-containing compound input and the isocyanate input, mixes the feed to produce a first foamable polymeric composition, and dispenses the first foamable polymeric composition into a first mold. In the second mold, the first mixing device returns the feed, without mixing, from the active hydrogen-containing compound input and the isocyanate input to the second mixing device which mixes the feed with feed from the filler material input to produce a second foamable polymeric composition, and dispenses the second foamable polymeric composition in a second mold.

REFERENCES:
patent: 3588953 (1971-06-01), Reuter et al.
patent: 4242306 (1980-12-01), Kreuer et al.
patent: 4308226 (1981-12-01), Wingard
patent: 4399105 (1983-08-01), Tilgner et al.
patent: 5084486 (1992-01-01), Patten et al.
patent: 5451376 (1995-09-01), Proksa et al.

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