Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal... – Forming baffle – bottleneck – or handle
Patent
1994-02-25
1995-09-12
Aftergut, Karen
Plastic article or earthenware shaping or treating: apparatus
Female mold and means to shape parison directly by internal...
Forming baffle, bottleneck, or handle
264533, 264540, 425527, 425531, 425535, 425541, B29C 4904, B29C 4908, B29C 4930, B29C 4950
Patent
active
054492840
ABSTRACT:
A method and apparatus for producing a hollow article having a blow molded portion and a compression molded portion. Plastic is extruded over a blow pin assembly to form a parison having an open end and a diameter larger than the diameter of the article's mouth. The blow pin is movable relative to the parison and includes a male mold member on its end. The male mold member has a molding surface corresponding in shape to the compression molded portion of the article. A cutting member is also provided on the blow pin. The cutting member is also movable relative to said parison. Once the parison is enclosed in a hollow mold, the male mold member of the blow pin compresses a portion of the parison between the second portion of the hollow mold and the molding surfaces of the male mold member so as to form the compression molded portion of the article. The cutting member is then moved downwardly relative to the parison so as to sever the parison at a position generally within the second portion of the mold and above the compression molded portion of the article. Air is then admitted through the blow pin into the interior of the parison to blow mold the blow molded portion of the article.
REFERENCES:
patent: 3209401 (1965-10-01), Mehnert
patent: 4753591 (1988-06-01), Maes et al.
patent: 4954071 (1990-09-01), Austin
Aftergut Karen
Hoover Universal Inc.
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