Title:
RADIO WAVE ABSORBING MATERIAL WITH VIBRATION-DAMPING SOUND-INSULATION FUNCTION
Document Type and Number:
Japanese Patent JP2005280321
Kind Code:
A
Abstract:
To provide a radio wave absorbing material which can be used as a material reducing an unnecessary air-borne sound and an unnecessary solid-borne sound in a building and constituting a soundproof wall, and which absorbs an unnecessary radio wave so as to prevent a malfunction in radio communication equipment, a communication failure and a leak of communication information.
Nonconductive sheet layers are laminated on both the sides of the radio wave absorbing layer which is obtained by adding a 0-100 pts.wt. thermoplastic polymer, 10-2,000 pts.wt. magnetic particles and 0-2,000 pts.wt. inorganic particles to 100 pts.wt. asphalt, and uniformly mixing them after that.
Inventors:
KAWAI HARUNOBU
YAMAMOTO SABURO
MIYAIE NOBORU
KINDEI HIDENORI
YAMAMOTO SABURO
MIYAIE NOBORU
KINDEI HIDENORI
Application Number:
JP2004127393A
Publication Date:
October 13, 2005
Filing Date:
March 26, 2004
Export Citation:
Assignee:
NANAO KOGYO KK
KAGAWA PREFECTURE
KAGAWA PREFECTURE
International Classes:
E04B1/92; B32B11/02; C08K3/00; C08L95/00; E04B1/98; G10K11/16; H05K9/00; (IPC1-7): B32B11/02; C08K3/00; C08L95/00; E04B1/92; E04B1/98; G10K11/16; H05K9/00
Domestic Patent References:
| JPH09302106A | 1997-11-25 | |||
| JPS58182999U | 1983-12-06 | |||
| JPS58182995U | 1983-12-06 |