发明名称 |
METHOD FOR MANUFACTURING PNEUMATIC TIRE |
摘要 |
A manufacturing method using a rigid core, wherein high-speed endurance performance is enhanced while breakage of band cords is suppressed. This method for manufacturing a pneumatic tire includes a green tire formation process for forming a green tire by affixing ti re-consti tuti ng members in sequence to a rigid core. The green ti re formation process includes a band ply formation step for winding a ribbon-shaped strip in which a band cord sequence is coated with a topping rubber into a helical shape. The band cord comprises a composite cord in which first strands of aramid fiber and second strands of heat-shrinkable organic fiber are twisted together. The stress-elongation curve of the composite cord has a low-elasticity region from the origin to the inflection point, and a high-elasticity region past the inflection point. The elongation of the composite cord is in the range of 0.9-3.3% at the inflection point, and the modulus of the composite cord is in the range of 11-31 N/% in the low-elasticity region. |
申请公布号 |
EP2783842(A1) |
申请公布日期 |
2014.10.01 |
申请号 |
EP20120865986 |
申请日期 |
2012.10.31 |
申请人 |
SUMITOMO RUBBER INDUSTRIES, LTD. |
发明人 |
FUKUMOTO,TORU |
分类号 |
B29D30/16;B29B15/08;B29D30/06;B29D30/12;B29D30/30;B29D30/38;B60C9/00;B60C9/20;B60C9/22 |
主分类号 |
B29D30/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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