Method and apparatus for blow-molding an article having a...

Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Differential temperature conditioning

Reexamination Certificate

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Details

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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Copy of European Search Report for European Application No. 04250887.9; Filed Feb. 19, 2004; Date of Completion May 19, 2005.
K. Haub; Blasgeformte TPE-Achsmanschetten Blow-Moulded TPE Axle Sleeves; pp. 332-334; Mar. 1, 1996; vol. 86, No. 3; Karl Hanser Verlag, Munchen Germany.

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