Invention Grant
- Patent Title: Pneumatic tire manufacturing method, and pneumatic tire
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Application No.: US15523585Application Date: 2015-11-04
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Publication No.: US10532615B2Publication Date: 2020-01-14
- Inventor: Masayuki Sakamoto , Takamichi Sagawa
- Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
- Applicant Address: JP Kobe-shi, Hyogo
- Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee Address: JP Kobe-shi, Hyogo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2014-228347 20141110
- International Application: PCT/JP2015/081043 WO 20151104
- International Announcement: WO2016/076175 WO 20160519
- Main IPC: B60C11/01
- IPC: B60C11/01 ; B60C13/00 ; B29D30/60 ; B29D30/52 ; B29D30/72 ; B29D30/08

Abstract:
A pneumatic tire manufacturing method is provided in which raw cover molding is suitably performed with no, or a minimal amount of, down-stitching in the manufacture of SOT-structure pneumatic tires; also provided is a pneumatic tire. This pneumatic tire manufacturing method involves: a step in which a sidewall, an inner liner, and a ply are bonded on a first molding drum, a pair of beads is set, and the tread side part is formed on the side wall, forming a first cover; a step in which a breaker and band are bonded on a second molding drum and the tread center part is formed on the band, shaping the tread ring; a step in which the first cover is inserted inside of the tread ring and the first cover is inflated, bonding the tread ring and the first cover with pressure; and a step in which the sidewall is folded back towards the lateral surface of the inflated first cover and bonded to the lateral surface of the first cover, and the tread side part and the tread center part are bonded together.
Public/Granted literature
- US20170305202A1 PNEUMATIC TIRE MANUFACTURING METHOD, AND PNEUMATIC TIRE Public/Granted day:2017-10-26
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