Title:
吸音遮音材及び囲い
Document Type and Number:
Japanese Patent JP6923196
Kind Code:
B2
Abstract:
To provide a sound absorption and sound insulation material which not only exerts sound absorption performance but also can improve sound insulation performance for insulting passage of sound to an opposite side of a sound source on a side where the sound source exists.SOLUTION: A sound absorption and sound insulation material 1 comprises a hollow boad B having one or more core layers C which are three-dimensionally formed, and two facing skin layers S1 and S2 for sandwiching the core layers C. The hollow board B comprises a plurality of small chambers X and communication spaces Y isolated from the small chambers X in an inner space region R formed between the skin layers S1 and S2. At least a part of partition walls Z partitioning the respective small chambers X from the communication spaces Y and outside the hollow board B is constituted of the skin layer S1, the communication space Y is sealed at an end 21 of the hollow board B, an inside of the communication space Y is filled with liquid L, and small holes H for communicating outside the hollow board B and the small chambers X are opened in the skin layer S1 constituting a part of the partition walls Z of the small chambers X.SELECTED DRAWING: Figure 5
Inventors:
Fumihiro Shindo
Yujiro Kawakami
Yujiro Kawakami
Application Number:
JP2017189634A
Publication Date:
August 18, 2021
Filing Date:
September 29, 2017
Export Citation:
Assignee:
Kawakami Sangyo Co., Ltd.
International Classes:
G10K11/16; B32B3/12; E04B1/86; E04B2/74; F25D19/00; G10K11/172
Domestic Patent References:
| JP2015187632A |
Attorney, Agent or Firm:
Kazuhiro Akazawa
Takeshi Miyazawa
Takeshi Miyazawa