发明名称 PNEUMATIC TIRE MANUFACTURING METHOD AND PNEUMATIC TIRE
摘要 Tire uniformity is improved. A method comprising a strip winding step S3 of forming strip-wound bodies 21 for forming bead apexes by circumferentially spirally winding a rubber strip 20 with an overlap on a ply inner portion 6A1a of a cylindrical ply 6A1 wound on a former, which is located axially inward of bead core setting positions P, and/or on ply outer portions 6A1b of the cylindrical ply 6A1, which are located axially outward of the bead core setting positions P, an expanding step S4 of toroidally expanding the ply inner portion 6A1a of the cylindrical ply 6A1, and a joining step S5 of turning up the ply outer portions 6A1b of the cylindrical ply 6A1 around bead cores 5 to sandwich the strip-wound bodies 21 between the toroidal ply inner portion 6A1a and the ply outer portions 6A1b, thereby joining them together.
申请公布号 US2010263780(A1) 申请公布日期 2010.10.21
申请号 US20080747851 申请日期 2008.12.04
申请人 MAFUNE TOSHIYUKI 发明人 MAFUNE TOSHIYUKI
分类号 B60C15/06;B29D30/08 主分类号 B60C15/06
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