Process and apparatus for continuous production of...

Details Process and apparatus for continuous production of... Process and apparatus for continuous production of...

B - Operations, Transporting

29

C

18/656

B29C 44/46 (2006.01) B29C 44/26 (2006.01)

Patent

CA 1142314

ABSTRACT A process and apparatus are disclosed for the continuous production of polyurethane foam. The invention is directed to the use of a laterally translating mold, the first portion of which has divergent side walls, including a "V"-shaped mold having divergent straight vertical side walls. A polyurethane reaction mixture is deposited at or near the apex of that mold. The deposited mixture can be a partially-expanded preformed fluid mixture formed, for example, by a centrifugal mixing means. Typically, the mixture is permitted to substantially complete its rise after being conveyed past the extremeties of the divergent side walls of the first mold portion. The invention con- templates use of a ratio of conveyor velocity to foam product height lower than those of the prior art. Both rectangular and circular cross sectional products can be produced.

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