Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal...
Patent
1991-06-25
1993-02-02
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Female mold and means to shape parison directly by internal...
425538, B29C 4948
Patent
active
051836734
ABSTRACT:
A mold 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:
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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.
patent: 4773147 (1988-09-01), Schurman
Chiesa Richard L.
The Plastic Forming Company, Inc.
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