Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Differential temperature conditioning
Reexamination Certificate
2006-12-26
2006-12-26
McDowell, Suzanne E. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Differential temperature conditioning
C264S540000
Reexamination Certificate
active
07153466
ABSTRACT:
A solid outwardly projecting flange is formed on the side wall of a blow-molded article by providing a blow mold having a circumferential groove that is filled by flowable thermoplastic during a blow cycle. The mold includes a heating system locally disposed adjacent the groove for heating the walls of the groove so as to heat the thermoplastic in this region, thereby reducing the viscosity of the thermoplastic so that it more-readily flows into and completely fills the groove. The mold can also include a cooling system disposed locally adjacent the groove for cooling the flange of the blow-molded article prior to ejection of the article from the mold.
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Alston & Bird LLP
McDowell Suzanne E.
Sonoco Development Inc.
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