Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common... – Extrusion shaping means
Patent
1975-10-28
1976-12-07
Spicer, Jr., Robert L.
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
Extrusion shaping means
425143, 425219, 425224, 264113, B29C 1500, B29D 700
Patent
active
039959805
ABSTRACT:
A three-compartment, heated-environment conveyor structure equipped with individual compartment material-lay-down delivery systems, processing a three-layer building panel material product, continuously, by compartment-to-compartment material laydown, as the product buildup is conveyor-advanced through the machine. The apparatus and process is for manufacturing a continuously extruded running length of construction paneling from continuous flow sources of thermoplastic material bits and a mixture thereof with cellulose fiber bits, by successively fusing and pressure rolling even-distribution layers of thermoplastic bits, a mixture of thermoplastic and cellulose fiber bits, and, again, thermoplastic bits, in respective ones of three cascaded oven chambers through which a material carrying conveyor is selectively advanced. The material distribution system, operating in concert with intermittent conveyor advance motions, provides even layer material distribution from the continuous flow sources, with each distributed layer being exposed to an oven environment to facilitate thermoplastic fusion during the time between intermittent conveyor advances and prior to subsequent pressure rolling.
REFERENCES:
patent: 2052324 (1936-08-01), Thomson
patent: 2756459 (1956-07-01), Kellner
patent: 2899704 (1959-08-01), Pekarek
patent: 3872199 (1975-03-01), Ottinger
Kintzinger Warren H.
Smith Nora S.
Spicer, Jr. Robert L.
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