公开(公告)号：US20200156411A1

公开(公告)日：2020-05-21

申请号：US16619680

申请日：2018-06-19

Applicant: BRIDGESTONE CORPORATION

Inventor： Eisuke AIKAWA ,  Masaaki NAKAMURA

IPC: B60C9/20 ,  B60C9/00

Abstract: A pneumatic tire includes a belt having an intersecting belt with a wide belt layer, a narrow belt layer, and a reinforcing layer between the wide belt layer and the narrow belt layer. A widthwise inner end of the reinforcing layer is on an inner side of the narrow belt layer, a widthwise outer end of the reinforcing layer is on an outer side of the narrow belt layer but on the inner side of the wide belt layer; core-sheath type composite fibers, whose core portion is composed of a high-melting-point resin having a melting point of 150° C. or higher and sheath portion composed of resin material containing an olefin-based polymer having a melting point not higher than tire vulcanization temperature, are embedded in the reinforcing layer; and an angle of the core-sheath type composite fibers is substantially the same as a reinforcing cord of the narrow belt layer.