FOAMED BODY MANUFACTURING METHOD, DETECTING METHOD FOR CONCENTRATION OF CARBON DIOXIDE GAS AND EXTRUDER

PROBLEM TO BE SOLVED: To provide a foaming body manufacturing method, in which the quantity of carbon dioxide gas in a molten resin at the outlet of an extruder for manufacturing a foaming body by injecting the carbon dioxide gas thereinto can be simply, accurately and continuously, and a carbon dio...

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Hauptverfasser: TOKIHISA MASAYOSHI, OYABU HIDEO
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creator TOKIHISA MASAYOSHI
OYABU HIDEO
description PROBLEM TO BE SOLVED: To provide a foaming body manufacturing method, in which the quantity of carbon dioxide gas in a molten resin at the outlet of an extruder for manufacturing a foaming body by injecting the carbon dioxide gas thereinto can be simply, accurately and continuously, and a carbon dioxide gas concentration detecting method and an extruder. SOLUTION: In the foamed body manufacturing method for manufacturing the foamed body by injecting carbon dioxide gas in the molten resin within the extruder, the molten resin is forcibly sucked at the neighbourhood of the extrusion port of the extruder so as to detect the carbon dioxide gas concentration in the sucked molten resin with a near infrared or infrared detecting sensor in order to control the injected quantity of the carbon dioxide gas to be injected in the molten resin of the extruder based on the detected carbon dioxide gas concentration. COPYRIGHT: (C)2007,JPO&INPIT
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SOLUTION: In the foamed body manufacturing method for manufacturing the foamed body by injecting carbon dioxide gas in the molten resin within the extruder, the molten resin is forcibly sucked at the neighbourhood of the extrusion port of the extruder so as to detect the carbon dioxide gas concentration in the sucked molten resin with a near infrared or infrared detecting sensor in order to control the injected quantity of the carbon dioxide gas to be injected in the molten resin of the extruder based on the detected carbon dioxide gas concentration. 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subjects AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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
title FOAMED BODY MANUFACTURING METHOD, DETECTING METHOD FOR CONCENTRATION OF CARBON DIOXIDE GAS AND EXTRUDER
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