Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal... – Forming baffle – bottleneck – or handle
Patent
1995-08-28
1996-07-09
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Female mold and means to shape parison directly by internal...
Forming baffle, bottleneck, or handle
264516, 425529, B29C 4920
Patent
active
055338810
ABSTRACT:
An apparatus for making a blow-molded container from a strain-hardenable polymer, the container having deep recesses for secure "post mold" attachment of a handle. The container is formed in a modified blow mold having retractable blades. The blades are partially extended for blow molding partial recesses, and then further extended for mechanically forming the deep handle recesses. The mechanical forming operation overcomes the stretch limits imposed by strain-hardening of the plastic material during blow molding, and the "post-mold" attachment of the handle provides a reduced cycle time and lower level of defects compared to the known "in-mold" handle forming operations.
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Collette Wayne N.
Krishnakumar Suppayan M.
Chiesa Richard L.
Continental PET Technologies Inc.
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