Thermoforming process and apparatus

Details Thermoforming process and apparatus Thermoforming process and apparatus

1994-09-26

1998-07-21

Timm, Catherine

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Including shaping means comprising fluid pressure contacting...

264550, 264555, 425183, B29C 5110, B29C 5122

Patent

active

057832293

ABSTRACT:
This invention is an improved thermoforming process and apparatus for the production of rigid plastic containers. The apparatus employs a molten sheet of thermoplastic material that is processed through two extrusion rolls, thermoformed on the periphery of a rotating form tool, mechanically ejected from the form tool conveyed to a conventional punch press where the formed articles are trimmed from the sheet then packaged for shipment. The operation of the extruder, extrusion rolls, forming wheel, mechanical ejection and trim stations are operated as a continuous, integrated system.

REFERENCES:
patent: 4250129 (1981-02-01), Winstead
patent: 4722820 (1988-02-01), Flecknoe-Brown
patent: 4994229 (1991-02-01), Flecknoe-Brown

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