Apparatus for blow molding

A molding tool for molding a substantially hollow article from a tubular parison comprises molding surfaces defining at least one cavity for forming a hollow portion of a molded article, the hollow portions having walls formed by expansion of the parison within the cavities and defining at least one...

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Bibliographische Detailangaben
Hauptverfasser:	RODRIGUEZ RICK, MADDOX A. D, PADLEY ROBERT L.JR
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES 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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Beschreibung
Zusammenfassung:	A molding tool for molding a substantially hollow article from a tubular parison comprises molding surfaces defining at least one cavity for forming a hollow portion of a molded article, the hollow portions having walls formed by expansion of the parison within the cavities and defining at least one solid area of the article to be molded attached to a wall of a hollow portion, the solid area comprising waste of the article as molded and the molding surfaces comprising surface undulations effective to improve the rate of heat transfer between the molding surfaces and the molding material comprising the solid areas. A mold assembly for molding hollow articles from tubular parisons comprises a molding tool in accordance with the invention. A blow molding machine comprises a mold assembly in accordance with the invention.