Melt-phase thermal pressure apparatus for forming of plastic bla

Details Melt-phase thermal pressure apparatus for forming of plastic bla Melt-phase thermal pressure apparatus for forming of plastic bla

1987-10-13

1989-06-06

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

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

Including both heating and cooling means

19880314, 264292, 264322, 425407, 425413, B29C 5124

Patent

active

048367648

ABSTRACT:
An apparatus for the thermal pressure forming of plastic blanks into containers includes several elements. A heater brings the plastic blanks to a melt phase by heating them to a melting temperature sufficient to relieve internal stresses therein. A conveying arrangement takes the plastic blanks through the heater. This conveying arrangement includes a device for preventing the plastic blanks from reaching the melting point only along their outer peripheral edges so that the plastic blanks maintain dimensional stability. Thereafter, a press forms the plastic blanks into retortable containers.

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