Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SOUND ABSORBING MATERIAL, SOUND ABSORPTION PERFORMANCE IMPROVING MEMBER, AND VEHICLE MEMBER
Document Type and Number:
WIPO Patent Application WO/2021/182468
Kind Code:
A1
Abstract:
A sound absorbing material which sequentially comprises a resin film, a first base material layer having a communicating pore, and a second base material layer having a communicating pore in this order, wherein the density of the first base material layer is lower than the density of the second base material layer.

Inventors:
TAKAYASU SATOSHI (JP)
YOKOKURA AI (JP)
KOTAKE TOMOHIKO (JP)
Application Number:
PCT/JP2021/009286
Publication Date:
September 16, 2021
Filing Date:
March 09, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SHOWA DENKO MAT CO LTD (JP)
International Classes:
B32B5/18; B32B3/24; B32B7/12; B32B15/08; B32B27/06; D04H1/4374; G10K11/168
Foreign References:
JP2002215169A2002-07-31
JP2007086505A2007-04-05
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Download PDF: