Process for making extruded panel product

Details Process for making extruded panel product Process for making extruded panel product

1977-08-22

1979-03-20

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling rate of movement of molding material or its...

264 37, 264113, 264122, 264126, 264175, 264DIG69, 4251311, 425143, B29C 1500, B29C 2900

Patent

active

041453891

ABSTRACT:
A process 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. Raw material distribution operates in concert with intermittent conveyor advance motions to provide 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: 3057022 (1962-10-01), Bar et al.
patent: 3072958 (1963-01-01), Collins
patent: 3171872 (1965-03-01), Jarrett et al.
patent: 3632371 (1972-01-01), Mikulka
patent: 3649396 (1972-03-01), Carlsson

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