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1. (WO2017151491) SOUND ABSORBING STRUCTURE AND PNEUMATIC TIRE

Pub. No.:    WO/2017/151491    International Application No.:    PCT/US2017/019655
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Feb 28 00:59:59 CET 2017
IPC: B60C 19/00
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
Inventors: IMAI, Koji
Title: SOUND ABSORBING STRUCTURE AND PNEUMATIC TIRE
Abstract:
Column resonance sound of certain frequencies can effectively be reduced in a pneumatic tire by disposing a sound absorbing structure (1) in an interior of the pneumatic tire, where the sound absorbing structure (1) includes a sheet-like base material (2); a plurality of protrusions (10) made from a nonwoven fabric and projecting from a front surface (2a) of the base material (2); and a hollow portion (20) provided inside of the protrusions (10).