Title:
STRUCTURE AND MANUFACTURING METHOD OF ACOUSTIC DOUBLE-FACED HONEYCOMB PANEL
Document Type and Number:
WIPO Patent Application WO/2022/209348
Kind Code:
A1
Abstract:
[Problem] The first problem is to provide a structure and a manufacturing method in which a face material having desired air-permeability can be disposed on any face of an acoustic double-faced honeycomb panel. The second problem is to provide a structure in which a honeycomb material is satisfactorily filled even if the thickness of a sound absorbing foam material is increased. The third problem is to shorten a manufacturing time and improve productivity. The fourth problem is to reduce the thickness of the panel. [Solution] A desired panel can be achieved by a structure in which a face material is bonded to each of two honeycomb materials having a total thickness smaller than the thickness of a sound absorbing foam material to form two core materials, and the two core materials are pressed in from both faces of the sound absorbing foam material. Further, in this structure, the thickness of the honeycomb material can be less than or equal to half the thickness of the sound absorbing foam material, whereby, when being filled with the sound absorbing foam material, the honeycomb material is less susceptible to deformation, and is satisfactorily filled. Productivity is improved by overlapping adhesive solidification times. The thickness is reduced by preventing an end of the honeycomb material from protruding from the foam material.
Inventors:
NAKAMURA TOMOHISA (JP)
UEKI YOSHIHIKO (JP)
TAKAHASHI SHUNJI (JP)
UEKI YOSHIHIKO (JP)
TAKAHASHI SHUNJI (JP)
Application Number:
PCT/JP2022/005519
Publication Date:
October 06, 2022
Filing Date:
February 11, 2022
Export Citation:
Assignee:
SHIZUKA CO LTD (JP)
International Classes:
G10K11/16
Domestic Patent References:
| WO2020095475A1 | 2020-05-14 |
Foreign References:
| JPH0788995A | 1995-04-04 | |||
| JP2006225923A | 2006-08-31 |
Attorney, Agent or Firm:
KATO Takao (JP)
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