MOLDING APPARATUS HAVING A COMPENSATING STRUCTURE

Embodiments of the present invention teach a molding apparatus for producing a molded article from a molding material. The molding apparatus comprises an inner core ( 108) and an outer core (110) for defining a portion of a molding cavity ( 106) for defining the molded article; the inner core ( 108)...

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Bibliographic Details
Main Author GLAESENER, PIERRE
Format Patent
LanguageEnglish
French
Published 09.02.2012
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:Embodiments of the present invention teach a molding apparatus for producing a molded article from a molding material. The molding apparatus comprises an inner core ( 108) and an outer core (110) for defining a portion of a molding cavity ( 106) for defining the molded article; the inner core ( 108) including a compensator (120), the compensator (120) being configured to: retract to a retracted position responsive to the pressure of the molding material being injected into the molding cavity (106); and extend to an extended position responsive to the shrinkage during solidification of the molding material in the molding cavity.
Bibliography:Application Number: CA20112805651