PREPARATION OF HOLLOW MOLDED ARTICLE HAVING TWIST PART

PURPOSE:To easily and inexpensively prepare a hollow molded article having a twist part, by grasping a parison extracted from a nozzle by using a grasping means while relatively rotating the nozzle and the grasping means to bring the parison to a twisted state. CONSTITUTION:A molten stock material r...

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Bibliographische Detailangaben
1. Verfasser:	SATOU TAKAAKI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS 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:	PURPOSE:To easily and inexpensively prepare a hollow molded article having a twist part, by grasping a parison extracted from a nozzle by using a grasping means while relatively rotating the nozzle and the grasping means to bring the parison to a twisted state. CONSTITUTION:A molten stock material reaching a nozzle 3 is injected as a cylindrical parison from a nozzle extrusion orifice 3a while the lower end part of the parison 6 is grasped by the arm 7a of a grasping member 7 which is, in turn, rotated to the direction shown by an arrow only over a predetermined angle by a driving means. In the next step, the twisted parison is cooled to a self-holdable temp. while held under a twisted state by a predetermined method to obtain a hollow molded article having a twist part.