METHOD OF THERMAL CRYSTALLIZATION TREATMENT FOR CYLINDRICAL MOUTHPART OF A PREFORM

A technical problem of this invention is to create a method for thermal crystallization by means of a jig of the inverted support type that enables a preform neck to be obtained with high dimensional accuracy. The object of this invention is to provide a highly productive thermal crystallization met...

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Bibliographische Detailangaben
Hauptverfasser:	KOMURO, TOSHIYUKI, IIMURA, YOSHIHIRO, NAGI, IZURU, UESUGI, DAISUKE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES 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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Beschreibung
Zusammenfassung:	A technical problem of this invention is to create a method for thermal crystallization by means of a jig of the inverted support type that enables a preform neck to be obtained with high dimensional accuracy. The object of this invention is to provide a highly productive thermal crystallization method for the bottle neck and an efficient biaxial drawing and blow molding process for the bottle. The means of carrying out this object comprises that the thermal crystallization of the neck is carried out by installing an inverted preform on the jig while the top neck surface is spaced from the top jig surface and utilizing the method for thermal crystallization under the conditions that the jig of the inverted support type is loaded with a synthetic resin preform for use in the biaxial drawing and blow molding process.