Apparatus for continuous extrusion of a multilayer synthetic res

Details Apparatus for continuous extrusion of a multilayer synthetic res Apparatus for continuous extrusion of a multilayer synthetic res

1985-02-14

1987-09-22

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

264171, 4251335, 425376A, 425466, B29C 4704, B29C 4792

Patent

active

046952365

ABSTRACT:
The apparatus for continuous extrusion of a plastic laminate has at least two extrusion screw presses, an accumulator block, a transition unit, and an output die, from which the plastic laminate product is extruded. The accumulator block has a combining channel or canal therein which is fed by the extrusion screw presses. This combining canal is connected by way of the transition unit to the output die. The combining canal preferably has a rectangular cross section with rounded corners and at its upstream end is directly connected to a first extrusion screw press by way of a connecting canal coaxial with the combining canal. Downstreamwards below the connecting canal is found at least one input metering slot connected to the combining canal at one end and through a connecting apparatus at its other end to an additional extrusion screw press, this input metering slot lying between an input plate and an adjusting bar guided in an adjusting bar recess. The input metering slot extends over a rectangular side of the rectangular cross section combining canal, is directed slantingly downstreamwards, and opens into the combining canal. The adjusting bar has an adjustable beveled portion fitting into the combining canal and is adjustable perpendicular to the input metering slot in the adjusting bar recess so as to meter the flow of thermoplastic material from the additional extrusion screw press.

REFERENCES:
patent: 3218971 (1965-11-01), Rowland
patent: 3464087 (1969-09-01), Koch
patent: 4197069 (1980-04-01), Cloeren
patent: 4379806 (1983-04-01), Korpman
patent: 4472129 (1984-09-01), Siard

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