Title:
PNEUMATIC TIRE MANUFACTURING METHOD AND PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2014213508
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pneumatic tire manufacturing method in which occurrences of standing waves in and around a breaker layer and air pockets in crown parts of tread are suppressed, and to provide a pneumatic tire manufactured by the manufacturing method.SOLUTION: A method of manufacturing a pneumatic tire including tread formed out of a predetermined tread rubber composition comprises: a step A of extrusion molding of an unvulcanized tread rubber composition, thereby obtaining a raw tread extruded product to which concave profiles are added; a step B of bonding the tread extruded product to another unvulcanized rubber composition, thereby obtaining an unvulcanized raw cover; and a step C of vulcanizing the obtained unvulcanized raw cover in a vulcanization metal mold. The concave profiles of a predetermined size are provided at positions at which crown main groove convex portions provided on an inner surface of the vulcanization metal mold in the step C are extruded.
Inventors:
MIYAZAKI TATSUYA
TABATA KATSUNORI
TABATA KATSUNORI
Application Number:
JP2013091653A
Publication Date:
November 17, 2014
Filing Date:
April 24, 2013
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
B29D30/58; B29C33/02; B29C35/02; B29C48/07; B29D30/06; B60C1/00; B60C11/04; B60C11/13; C08K3/36; C08K5/09; C08K5/20; C08L21/00
Domestic Patent References:
| JPH1076811A | 1998-03-24 | |||
| JPH09150465A | 1997-06-10 | |||
| JP2013233788A | 2013-11-21 | |||
| JP2013064102A | 2013-04-11 | |||
| JP2003251632A | 2003-09-09 | |||
| JP5153961B1 | 2013-02-27 |
Attorney, Agent or Firm:
Kiyoshi Kawamura
Yosuke Fujimori
Keiko Kato
Shinko Mishima
Yosuke Fujimori
Keiko Kato
Shinko Mishima
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