公开(公告)号：US20170144490A1

公开(公告)日：2017-05-25

申请号：US15129764

申请日：2015-03-31

Applicant: THE YOKOHAMA RUBBER CO., LTD.

Inventor： Keisuke MAEJIMA ,  Satoshi MIHARA

IPC: B60C11/16 ,  C08L9/00 ,  B60C11/12 ,  C08L7/00 ,  B60C1/00 ,  B60C11/11

CPC classification number: B60C11/1637 ,  B60C1/00 ,  B60C1/0016 ,  B60C11/00 ,  B60C11/11 ,  B60C11/1204 ,  B60C11/16 ,  B60C11/1625 ,  B60C11/1656 ,  B60C11/1668 ,  B60C2011/1213 ,  C08K3/04 ,  C08K3/36 ,  C08K5/01 ,  C08K9/10 ,  C08K2201/006 ,  C08L7/00 ,  C08L9/00 ,  C08L9/06 ,  C08L91/00 ,  C08L91/06 ,  C08L2205/02 ,  C08L2205/03 ,  C08L21/00 ,  C08K5/548 ,  C08K3/22 ,  C08K5/09 ,  C08K3/06 ,  C08K5/18 ,  C08K5/31

Abstract: A studded tire includes stud pins embedded in a road contact surface of a tread portion 1; the rubber composition forming the tread portion containing at least one of natural rubber, styrene-butadiene rubber, and butadiene rubber, from 5 to 50 parts by weight of carbon black and from 5 to 70 parts by weight of silica per 100 parts by weight of the diene rubber; a nitrogen adsorption specific surface area of the carbon black being from 50 to 120 m2/g; a CTAB specific surface area of the silica being from 80 to 190 m2/g; a rubber hardness of the rubber composition being not greater than 60; and a product of a stress at the time of 400% elongation and a bottom surface area of a flange portion on a bottom side of the stud pins being not less than 400 MPa·mm2 and not greater than 850 MPa·mm2.