Apparatus for producing polyurethane foam buns of varying height

Plastic article or earthenware shaping or treating: apparatus – Means casting fluent stock operably associated with shaping...

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264 51, 425470, 425817C, B29D 2704

Patent

active

041026217

ABSTRACT:
Liquid foam reactants are deposited on an inclined pour plate from whence the reactants flow by gravity onto a single carrier, open top conveyor which carries the resulting foam bun away from the pour plate as it expands. A connecting wall is hingedly attached to the inclined pour plate along the lower edge thereof, which is also the "creamline." An elevator is attached to the pour plate, which, although generally maintained at a constant inclination during operation, may be selectively raised or lowered during operation to substantially alter the bun height adjusting the creamline height relative to the conveyor bed. The lower edge of the connecting wall loosely rests on the conveyor and moves back and forth responsive to adjustment of the creamline height, thereby maintaining support beneath the foaming bun between the pour plate and connector bed.

REFERENCES:
patent: 3832099 (1974-08-01), Berg
patent: 3870441 (1975-03-01), Petzetakis
patent: 4005958 (1977-02-01), Porter
patent: 4060579 (1977-11-01), Schmitzer et al.

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