Title:
空気入りタイヤ
Document Type and Number:
Japanese Patent JP7263940
Kind Code:
B2
Abstract:
To solve the problem that there is the problem that ride comfort deteriorates in a method in which a cap tread rubber is softened to deteriorate spring characteristics in order to reduce road noise derived from a tire, where reduction of the road noise and improvement in ride comfort are inconsistent with each other.SOLUTION: A pneumatic tire has bead fillers 6 that include 40-70 pts.mass of carbon black whose nitrogen adsorption specific surface areas are 30-90 m2/g with respect to 100 pts.mass of diene system rubber including natural rubber and butadiene rubber, where a blending ratio of the natural rubber in the 100 pts.mass of diene system rubber is 40 pts.mass or less. 100% modulus (M100cap) of a cap tread rubber and 100% modulus (M100BF) of the bead filler satisfy a relational expression:(M100cap)×(M100BF)≤22MPa and a ratio of (a bead filler height BH)/(a tire cross section height SH) is 0.2-0.7.SELECTED DRAWING: Figure 1
More Like This:
Inventors:
Masato Ozaki
Hiroki Sugiura
Hirokazu Shibata
Hiroki Sugiura
Hirokazu Shibata
Application Number:
JP2019116956A
Publication Date:
April 25, 2023
Filing Date:
June 25, 2019
Export Citation:
Assignee:
THE YOKOHAMA RUBBER CO.,LTD.
International Classes:
B60C15/06; B60C1/00; B60C11/00; C08K3/04; C08L9/00
Domestic Patent References:
| JP2014028887A | ||||
| JP2010089680A | ||||
| JP2006168595A | ||||
| JP2011093386A | ||||
| JP2002105249A |
Attorney, Agent or Firm:
Shigeru Noda