公开(公告)号：US20170113488A1

公开(公告)日：2017-04-27

申请号：US15332173

申请日：2016-10-24

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Wako IWAMURA ,  Makoto SUGIYA ,  Katsumi TERAKAWA ,  Kazuyoshi SHIGA

IPC: B60C7/10 ,  C08K5/098 ,  C08L7/00 ,  B60C7/14 ,  B60C1/00

CPC classification number: B60C7/102 ,  B60C1/00 ,  B60C1/0016 ,  B60C7/14 ,  B60C7/18 ,  B60C9/18 ,  B60C2007/146 ,  B60C2009/1871 ,  C08K5/098 ,  C08L7/00 ,  Y02T10/862

Abstract: An airless tire includes a tread ring, a hub and a spoke. The tread ring includes a tread rubber layer, a first reinforcing cord layer on radial direction inner side of the tread layer, a second reinforcing cord layer on radial direction inner side of the first cord layer, and a shear rubber layer between the cord layers, the cord layers have array layers including reinforcing cords, and topping rubber portions covering the array layers, each topping portion has an inner portion adjacent to the shear layer, and an outer portion, and the topping portion(s) has the inner portion formed of a composition including a rubber component which includes a butadiene rubber in content rate of 10 to 100% by mass, an α, β-unsaturated carboxylic acid metal salt in amount of 10 to 80 parts by weight with respect to 100 parts by mass of the component, and a peroxide.