Title:
SOUND-PROOF PANEL
Document Type and Number:
WIPO Patent Application WO/1998/036135
Kind Code:
A1
Abstract:
A sound-proof panel comprising a front sheet (4) disposed on the sound source side, a back sheet (6) disposed on the counter-sound source side and a sound-absorbing material interposed between the front sheet (4) and the back sheet (6), wherein the sound-proof material includes a first sound-absorbing material (14) made of a foamed material, etc., and disposed on the front sheet (4) side and a second sound-absorbing material (15) substantially comprising pulverized products of magnetic body coating plastic and disposed on the back sheet (6) side. The sound-absorbing performance of the sound-proof panel for which the waste materials of magnetic body coating plastic are effectively utilized can be improved, and is particularly suitable for use as a sheet of the lower surface of elevated roads.
Inventors:
KURODA HIDEYUKI (JP)
MIKI YOSHIAKI (JP)
MIKI YOSHIAKI (JP)
Application Number:
PCT/JP1998/000407
Publication Date:
August 20, 1998
Filing Date:
January 30, 1998
Export Citation:
Assignee:
ZEON KASEI KK (JP)
KURODA HIDEYUKI (JP)
MIKI YOSHIAKI (JP)
KURODA HIDEYUKI (JP)
MIKI YOSHIAKI (JP)
International Classes:
E04B1/86; E01D19/08; E04B1/80; G10K11/16; G10K11/162; G10K11/168; (IPC1-7): E04B1/86; E01F8/00; G10K11/16
Foreign References:
| JPS4914032U | 1974-02-06 | |||
| JPS51112310U | 1976-09-10 | |||
| JPH0713574A | 1995-01-17 | |||
| JPS5931930B2 | 1984-08-06 | |||
| JPS6329768Y2 | 1988-08-10 | |||
| JPS532895Y2 | 1978-01-25 | |||
| JPS6273012U | 1987-05-11 |
Attorney, Agent or Firm:
Maeda, Hitoshi (2F Hokushin Building, 22, Kanda Jinbou-cho 1-chom, Chiyoda-ku Tokyo 101, JP)
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