CONTINUOUS NORMAL PRESSURE VULCANIZATION METHOD

CONTINUOUS NORMAL PRESSURE VULCANIZATION METHOD

PROBLEM TO BE SOLVED: To provide a continuous normal pressure vulcanization method with which an unvulcanized rubber product is continuously vulcanized with vulcanization speed nearly equal to extrusion speed, while retaining the shape of the product even when the unvulcanized rubber product to be e...

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Bibliographische Detailangaben
Hauptverfasser: KUBOTA TAKUMI, SHIKAYAMA KOTARO, AOYAMA HIROMITSU, TSUDA TAKEO, FUKUDA KOJI, NORO SHOHEI
Format: Patent
Sprache:eng
Schlagworte:
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
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a continuous normal pressure vulcanization method with which an unvulcanized rubber product is continuously vulcanized with vulcanization speed nearly equal to extrusion speed, while retaining the shape of the product even when the unvulcanized rubber product to be extrusion molded is long and has a large cross-sectional shape.SOLUTION: An unvulcanized rubber product D to be molded with continuous extrusion is sent to, and immersed in, a liquid vulcanization tank 3 in which a liquid heat medium 5, consisting of one liquid or a plurality of liquids with specific gravity less than that of the unvulcanized rubber product, is heated and stored, and vulcanized under normal pressure. The unvulcanized rubber product is continuously vulcanized by maintaining an immersed state in the liquid heat medium 5 without being floated with buoyancy, and uniformly heating the product, while retaining the shape, in accordance with extrusion speed under normal pressure.