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Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2021/079672
Kind Code:
A1
Abstract:
Provided is a tire comprising a belt layer capable of maintaining excellent noise performance, ride comfort performance, and durability performance and improving low fuel consumption performance. Provided is a tire 1 in which a belt layer 7 is arranged inside of a tread part 2. The belt layer 7 includes at least one belt ply 7A, 7B. The belt ply 7A, 7B includes a belt cord 9 comprising a steel single wire 9A having a flat cross section and topping rubber 10 covering the belt cord 9. The topping rubber 10 has a complex elastic modulus ES* of 8.0-20.0 MPa at 70 °C and a loss tangent tanδ of 0.04-0.16 at 70 °C. The ratio (tanδ/ES*) between the loss tangent tanδ and the complex elastic modulus ES* (MPa) of the topping rubber 10 is 0.002-0.017.

Inventors:
NAKAJIMA HIROKI (JP)
YAMAGUCHI EIJI (JP)
Application Number:
PCT/JP2020/035738
Publication Date:
April 29, 2021
Filing Date:
September 23, 2020
Export Citation:
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Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C1/00; B60C9/00; B60C9/20; D07B1/06
Foreign References:
JP2008156418A2008-07-10
JP2013122038A2013-06-20
JP2014095017A2014-05-22
JP2017178994A2017-10-05
JP2001080313A2001-03-27
JP2017048351A2017-03-09
Attorney, Agent or Firm:
SUMITOMO Shintaro (JP)
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