Title:
TIRE VULCANIZATION BLADDER
Document Type and Number:
WIPO Patent Application WO/2021/010391
Kind Code:
A1
Abstract:
Provided is a tire vulcanization bladder that is provided with a coating layer formed from a mold release agent and that enables improvement of producibility while peeling of the coating layer is suppressed. A primer layer 21b is provided to the outer surface of a bladder body 21a. A coating layer 21c is provided to the outer side of the primer layer 21b. The bladder body 21a is formed from a rubber composition that contains not less than 50 mass% of butyl rubber in a rubber component. The coating layer 21c is formed from a mold release agent that contains a silicone component. The primer layer 21b is formed from a silane compound having an alkoxy group and an amino group.
Inventors:
OZAKI AYAKO (JP)
ISHIKAWA KAZUNORI (JP)
ISHIKAWA KAZUNORI (JP)
Application Number:
PCT/JP2020/027359
Publication Date:
January 21, 2021
Filing Date:
July 14, 2020
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B29C33/02
Domestic Patent References:
| WO2018146884A1 | 2018-08-16 |
Foreign References:
| JP2017001293A | 2017-01-05 | |||
| JP2011224945A | 2011-11-10 |
Other References:
See also references of EP 4000850A4
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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