MANUFACTURING METHOD OF FLUORORUBBER PACKING

PROBLEM TO BE SOLVED: To provide a manufacturing method of fluororubber packing excellent in physical/mechanical properties without increasing production cost even if a general-purpose fluororubber is used. SOLUTION: In manufacturing the fluororubber packing, after primary vulcanization such as pres...

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Bibliographic Details
Main Authors SUZUKI SHINSUKE, FUKASE KENICHI, ISODA YASUHIRO, IKEDA SATORU
Format Patent
LanguageEnglish
Published 10.09.2009
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:PROBLEM TO BE SOLVED: To provide a manufacturing method of fluororubber packing excellent in physical/mechanical properties without increasing production cost even if a general-purpose fluororubber is used. SOLUTION: In manufacturing the fluororubber packing, after primary vulcanization such as press molding by a heating/pressure-forming device and secondary vulcanization in the atmosphere by a heating device such as an air heating furnace are carried out, tertiary vulcanization is carried out in an oxygen-free nitrogen atmosphere. The tertiary vulcanization is carried out at 300°C or higher than a temperature of the secondary vulcanization. The fluororubber is a copolymer of hexafluoropropylene/vinylidene fluoride or a copolymer of tetrafluoroethylene/hexafluoropropylene/vinylidene fluoride, while the vulcanization is peroxide vulcanization or polyol vulcanization. COPYRIGHT: (C)2009,JPO&INPIT
Bibliography:Application Number: JP20080044363