METHOD AND EQUIPMENT FOR CLEANING TIRE VULCANIZATION DIE

Title:

METHOD AND EQUIPMENT FOR CLEANING TIRE VULCANIZATION DIE

Document Type and Number:

WIPO Patent Application WO/2007/015496

Kind Code:

A1

Abstract:

A cleaning method of a tire vulcanization die for cleaning the molding face of a sector of the tire vulcanization die for molding the tread portion of a pneumatic tire by using plasma generated in reaction gas atmosphere chemically reacting with a contaminant adhering to the molding face of the sector. The cleaning method comprises a step for arranging the sector on an electrode table in a cleaning tank, a step for supplying reaction gas into the cleaning tank while reducing the pressure in the cleaning tank, a step for generating plasma between a discharge electrode and the molding face of the sector by supplying high frequency power to the discharge electrode, and a step for generating a negative self-bias voltage in the electrode table by applying to the electrode table a high frequency voltage lower in frequency than a high frequency supplied to the discharge electrode.

Inventors:

SEKO AKIKAZU (JP)
SAITOU MIYUKI (JP)
HATANAKA TOSHIHIKO (JP)

Application Number:

PCT/JP2006/315238

Publication Date:

February 08, 2007

Filing Date:

August 01, 2006

Export Citation:

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Assignee:

YOKOHAMA RUBBER CO LTD (JP)
SEKO AKIKAZU (JP)
SAITOU MIYUKI (JP)
HATANAKA TOSHIHIKO (JP)

International Classes:

B29C33/72; B08B7/00; B29L30/00

Foreign References:

JPH1119945A	1999-01-26
JP2005002432A	2005-01-06
US20050161427A1	2005-07-28
JP2001293729A	2001-10-23
JPH08207056A	1996-08-13
JP2001293729A	2001-10-23

Other References: