Controlling weight and wall thickness of a blow molded article

Details Controlling weight and wall thickness of a blow molded article Controlling weight and wall thickness of a blow molded article

1990-03-26

1991-10-29

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of gaseous process material

264 401, 264527, 264536, 425538, B29C 4948, B29C 4972

Patent

active

050614177

ABSTRACT:
A mold and a process for controlling the weight and wall thickness distribution in a blow molded plastic manufactured article or a family or related articles involves simultaneous formation of the manufactured article and a waste article. The waste article is removed and recycled to manufacture further articles. The waste article forming chamber increases the apparent depth of the manufactured article chamber to create a larger apparent surface area, so that the parison is being blown over a much larger surface area, creating a reduced actual part weight and actual wall thickness.

REFERENCES:
patent: 3317955 (1967-05-01), Schurman
patent: 3796780 (1974-03-01), Schurman
patent: 3886645 (1975-06-01), Schurman
patent: 4332750 (1982-06-01), Roggenburg, Jr. et al.
patent: 4738612 (1988-04-01), Kikuchi et al.

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