Title:
VIBRATION DAMPING MATERIAL
Document Type and Number:
Japanese Patent JP2023184598
Kind Code:
A
Abstract:
To provide a vibration damping material capable of exhibiting excellent vibration damping performance and of reducing its own weight while having high rigidity.SOLUTION: A vibration damping material of the present invention, used to be installed on a panel 300 of a vehicle, includes a viscoelastic layer 200 and a constraining layer 100 provided on one surface of the viscoelastic layer 200, wherein the constraining layer 100 has a multilayer structure including a core layer 10 with cylindrical cells arranged in multiple rows and film layers 40, 50 provided on both sides of the core layer 10, and wherein the relationship between a strain εa and a strain εb is 0<εa/εb<1, the strain εa being a strain on a surface 100a of the constraining layer 100 on the opposite side to the viscoelastic layer, and the strain εb being a strain on a surface 100b of the constraining layer 100 on the side in contact with the viscoelastic layer.SELECTED DRAWING: Figure 2
Inventors:
FUKUI KAZUTAKA
Application Number:
JP2023183829A
Publication Date:
December 28, 2023
Filing Date:
October 26, 2023
Export Citation:
Assignee:
KOTOBUKIYA FRONTE CO LTD
International Classes:
B32B3/12; B32B7/02
Attorney, Agent or Firm:
Shoichi Okuyama
Ayako Nakamura
Soji Morimoto
Ayako Nakamura
Soji Morimoto