PRESSURIZED GAS INTRODUCING DEVICE AND INJECTION MOLDING METHOD OF MOLDED ARTICLE HAVING HOLLOW PART

PROBLEM TO BE SOLVED: To provide a pressurized gas introducing device which certainly introduces a pressurized gas with a constant pressure required to form a hollow part, and has a simple structure. SOLUTION: The pressurized gas introducing device is composed of: a pressurized gas feed source 10; a...

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Bibliographische Detailangaben
Hauptverfasser:	OSHIMA TERU, KAYANO YOSHIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TESTING THEIR RELEVANT APPARATUS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a pressurized gas introducing device which certainly introduces a pressurized gas with a constant pressure required to form a hollow part, and has a simple structure. SOLUTION: The pressurized gas introducing device is composed of: a pressurized gas feed source 10; a pressurized gas metering part 20; a first pressurized gas feed passage 30 for supplying the pressurized gas from the pressurized gas feed source 10 to the pressurized gas metering part 20; a second pressurized gas feed passage 32 for introducing the pressurized gas from the pressurized gas metering part 20 into the molten resin in the cavity provided in the mold; a pressurized gas feed valve 31 disposed between the pressurized gas metering part 20 and the first pressurized feed passage 30; and a pressurized gas discharge control valve 33 disposed between the pressurized gas metering part 20 and the second pressurized gas feed passage 32. The pressurized gas metering part 20 consists of a pipe. COPYRIGHT: (C)2007,JPO&INPIT