Patent ID: 8448743
Filing Date: 2013-05-28
Classification: B29D,B60C,Y10T

Abstract:
1. A tire noise reduction device to be mounted on an inner surface of a tread portion of a tire, the tire noise reduction device comprising: a sound absorbing member made of a porous material and having an annular shape; and a repair liquid permeable layer stacked in a thickness direction on an outer peripheral surface of the sound absorbing member, wherein the repair liquid permeable layer is formed of foaming resin having many continuous pores and a flow resistance lower than that of the porous material, the repair liquid permeable layer is arranged between the sound absorbing member and the inner surface of the tread portion of the tire, and the repair liquid permeable layer is divided into a plurality of sections arranged at predetermined intervals in a circumferential direction of the sound absorbing member, the sound absorbing member bridging between adjacent repair liquid permeable layer sections.