APPARATUS AND METHOD FOR PLASTIC EXTRUSION

An object of the invention is to improve capacity of process and not require a vent portion by an upper polygonal groove and a transition portion provided to a transport cylinder. A plastic extrusion method and apparatus according to the invention is a method and a configuration, in which an upper p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TAKAMOTO SEIJI, INOUE SHIGEKI, KOBAYASHI FUMIO, YATA KYOHEI
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:	An object of the invention is to improve capacity of process and not require a vent portion by an upper polygonal groove and a transition portion provided to a transport cylinder. A plastic extrusion method and apparatus according to the invention is a method and a configuration, in which an upper polygonal groove and a transition portion are integrally or separately provided to a transport cylinder so as to increase a frictional coefficient of an inner wall of the cylinder, to increase transport efficiency of a plastic raw material by a screw, and to allow at least gas, etc., pass toward a hopper side without using a vent portion.