Apparatus for producing corrugated foamed plastic sheet

Details Apparatus for producing corrugated foamed plastic sheet Apparatus for producing corrugated foamed plastic sheet

1979-06-26

1981-03-10

Anderson, Philip

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

Centripetal elastic melt extruder type

264 51, 264177R, 2642094, 425466, 425817C, B29F 304, B29D 2700

Patent

active

042551102

ABSTRACT:
An apparatus for producing a corrugated foamed plastic sheet includes an extruder and a die provided at the extrusion end of the extruder. The die has a plurality of grooves provided on one of its surfaces which make contact with the foamed sheet being produced. The grooves extending from the resin feed inlet toward the resin exit of the die.

REFERENCES:
patent: Re28600 (1975-11-01), Lemelson
patent: 281711 (1883-07-01), Merrill
patent: 1768671 (1930-07-01), Devine
patent: 2230309 (1941-02-01), Reed
patent: 2687997 (1954-08-01), Marchand
patent: 2750631 (1956-06-01), Johnson
patent: 3060504 (1962-10-01), Thomas et al.
patent: 3355769 (1967-12-01), Fogelberg
patent: 3410933 (1968-11-01), Moseley
patent: 3936518 (1976-02-01), Soda et al.
patent: 3978182 (1976-08-01), Luthra

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