High pressure mixing system and process for producing foamed iso

Details High pressure mixing system and process for producing foamed iso High pressure mixing system and process for producing foamed iso

1995-08-08

1997-04-01

Cooley, Charles E.

Agitating

Having specified feed means

Returning material to supply

3661625, 422133, B01F 504, B01F 1502

Patent

active

056159498

ABSTRACT:
A process and system for mixing at least two independent streams in a mixing device having independent inputs for each of the at least two independent streams, comprising structure and steps for: (i) feeding a first stream, provided as a free-flowing solids stream, to a pressure chamber; (ii) compressing the first stream in the pressure chamber; (iii) feeding the first stream to a first input in the mixing device; (iv) feeding a second stream to a second input in the mixing device; (v) impinging the first stream and the second stream on one another in a mixing device to produce a mixture; and (vi) dispensing the mixture from the mixing device; wherein the compressing in Step (ii) is conducted to achieve a substantially linear relationship between a weight of the first stream and a period of impingement of the weight in Step (v). Preferably, the process and system are adapted to produce a filled foamed isocyanate-based polymer (e.g. filled polyurethane foam).

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