Apparatus for making a thin walled container from a plastic resi

Details Apparatus for making a thin walled container from a plastic resi Apparatus for making a thin walled container from a plastic resi

1984-06-26

1985-08-20

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

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

Including shaping means comprising fluid pressure contacting...

264549, B29C 1704

Patent

active

045361487

ABSTRACT:
The apparatus for making thin-walled containers from plastic resins includes a heater for raising the temperature of the resin sheet, a product mold and a preform mold located in axial alignment and movable relative together. The preform mold includes a reciprocal piston that is arranged, when the molds are closed on the resin sheet, to be moved in response to fluid pressure to force the sheet into the product mold while gas pressure is applied to the interior of the sheet to force the resin sheet into the final product configuration. The elongation of the sheet by the piston and the radial deformation caused by the gas, biaxially orient the material to increase the strength of the container.

REFERENCES:
patent: 3172159 (1969-03-01), Edwards
patent: 3218379 (1965-11-01), Edwards
patent: 3441983 (1969-05-01), Cheney
patent: 3450807 (1969-06-01), Cheney
patent: 3568254 (1971-03-01), Stolki
patent: 3737494 (1973-06-01), Wolf
patent: 3814784 (1974-06-01), Wolf
patent: 4427476 (1984-01-01), Beck et al.
patent: 4443401 (1984-04-01), Turner

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