COMPRESSION MOLDING METHOD

PURPOSE: To prevent the deterioration of a thermoplastic resin by using a compression molding machine and supplying a filler and a thermoplastic resin to an extruder to melt and knead them and extruding the kneaded mixture from the extruder to charge the extrudate in a compression mold to subject th...

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Bibliographic Details
Main Author FUJII KIYONOBU
Format Patent
LanguageEnglish
Published 10.12.1996
Edition6
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS
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:PURPOSE: To prevent the deterioration of a thermoplastic resin by using a compression molding machine and supplying a filler and a thermoplastic resin to an extruder to melt and knead them and extruding the kneaded mixture from the extruder to charge the extrudate in a compression mold to subject the same to compression molding. CONSTITUTION: Polypropylene and mica are melted and kneaded in an extruder fitted with a caster having a single hole die attached thereto. Subsequently, the kneaded mixture is extruded from the extruder to be charged in a compression mold to be subjected to compression molding. By this constitution, the deterioration of a thermoplastic resin is not almost generated and the process from the melting and kneading of a filler and a thermoplastic resin to compression molding can be continuously performed and a molded product holding the original characteristics of the thermoplastic resin can be industrially produced.
Bibliography:Application Number: JP19950130130