To provide a vibration damping material 10 which is lightweight, which has high vibration damping property, which can easily be formed into a film by an extrusion molding method during manufacture, and which can easily be glued by adhesion or thermobonding during use.
The vibration damping material consists of at least a vibration damping layer 11 and an adhesion layer 13. In this material, the vibration damping layer 11 contains (A) 20-50 pts.wt. of a polyester resin composed of a dicarboxylic acid component unit and a diol component unit, (B) 50-80 pts.wt. of mica pieces, (C) 0.1-20 pts.wt. of conductive carbon powder, and (D) a styrene-based thermoplastic elastomer. A content ratio of (A)+(B)+(C):(D) is 100:50-900 pts.wt. on the basis of mass and the thickness of the vibration damping material 10 is 2 mm or less.
UEKI TAKAYUKI
YAGI IZUMI
Keiko Fukamachi
Hideo Ito
Hiromi Fujimasu
Naoki Goto