MOLDING MACHINE CROSSHEAD AND PARISON FORMING METHOD USING SAME

The present invention provides a molding machine crosshead which uses one additional resin extruder and one base resin extruder that are connected to one annular flow channel of a crosshead unit at mutually different angular positions and which is configured to form a parison by adding an additional...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ITO YUJI, TAKEYAMA TOSHINARI, FUJIWARA YUKIO, KAWACHI RYUICHI
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:	The present invention provides a molding machine crosshead which uses one additional resin extruder and one base resin extruder that are connected to one annular flow channel of a crosshead unit at mutually different angular positions and which is configured to form a parison by adding an additional layer constituted by an additional resin from the additional resin extruder to a base layer constituted by a base resin supplied from the base resin extruder into the annular flow channel, the additional resin being a material different from the base resin, wherein the additional resin is formed in a linear shape along the longitudinal direction of the parison as part of the parison.