Title:
SOUND ABSORBING MATERIAL, AND VEHICLE MEMBER
Document Type and Number:
WIPO Patent Application WO/2022/219807
Kind Code:
A1
Abstract:
Provided is a sound absorbing material comprising, in the following order, a protection layer, a first base material layer having a communication hole, and a second base material layer having a communication hole, the protection layer having a flexibility and toughness value of 1–75 [MPa/μm] as represented by the following formula (I). Flexibility and toughness value = (tensile modulus [MPa] of protection layer at 25°C × Shore A hardness of protection layer) / thickness [μm] of protection layer (I)
Inventors:
TAKAYASU SATOSHI (JP)
SHIMIZU MARI (JP)
KOTAKE TOMOHIKO (JP)
SHIMIZU MARI (JP)
KOTAKE TOMOHIKO (JP)
Application Number:
PCT/JP2021/015719
Publication Date:
October 20, 2022
Filing Date:
April 16, 2021
Export Citation:
Assignee:
SHOWA DENKO MATERIALS CO LTD (JP)
International Classes:
B60R13/08; G10K11/16; G10K11/168
Domestic Patent References:
| WO2020213685A1 | 2020-10-22 | |||
| WO2020213685A1 | 2020-10-22 |
Foreign References:
| JP2003316366A | 2003-11-07 | |||
| JPH10226006A | 1998-08-25 |
Other References:
See also references of EP 4306365A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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