Process for forming a plastic article

Details Process for forming a plastic article Process for forming a plastic article

1979-02-01

1981-05-05

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264550, 4253871, B29C 1704, B29D 904

Patent

active

042658527

ABSTRACT:
A process and apparatus for forming a laminated plastic article, especially a container. In one formation sequence, a flattened preform of desired perimeter configuration is formed, which preferably is multilayered, directly from thermoplastic materials. In another formation sequence, a preform is positioned in a thermoforming apparatus wherein, with edge portions of the preform is clamped and the midportions are mandrel-formed into a body having continuous integral side and bottom wall portions. This body is then trimmed and blow-molded to produce a desired product article. Residual portions of the starting preform can be trimmed away from the lip portions of the product article if desired.

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