Pressure forming apparatus

Details Pressure forming apparatus Pressure forming apparatus

1975-06-16

1977-03-15

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Press forming means, press reshaping means, or vulcanizing...

Roll and coacting endless belt press member

425224, 425 4C, 264175, B29C 1500

Patent

active

040121887

ABSTRACT:
An apparatus and method are provided for continuously forming a plastic material, such as a thermoplastic polymer, under pressure against a drum containing irregular surface formations or cavities therein. In one form, injected plastic material is compressed between a bucking member and a substantial area of the surface of a forming drum. The molten casting or molding material is confined to a volume including a portion of the surface of the drum while pressure is applied thereto and until it solidifies. A bucking member such as an endless belt or otherwise shaped member defines a portion of the confined molding volume.

REFERENCES:
patent: 1376731 (1921-05-01), Ryan
patent: 2500728 (1950-03-01), Williams
patent: 2526318 (1950-10-01), Battin
patent: 3085292 (1963-04-01), Kindseth
patent: 3216059 (1965-11-01), Voelskow
patent: 3241182 (1966-03-01), Kessler

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