Title:
WHITEBOARD SURFACE MATERIAL HAVING SOUND ABSORPTION PERFORMANCE
Document Type and Number:
Japanese Patent JP2017024270
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a whiteboard surface material having sound absorption performance which includes a large number of inconspicuous pinholes having a sound absorbing hole diameter of 1 mm or less, formed in its surface for sound absorption, and not impairing the appearance due to their presence, has excellent sound absorption performance, and is suitable as a surface material of a whiteboard installed in facilities requiring quiet such as schools, public facilities, hospitals, and libraries.SOLUTION: A whiteboard surface material consists of a white resin film 1 and a thin metal plate 3 fused to the resin film 1 to support the resin film 1, and an infinite number of pinholes 2, 4 having a pore size of 1 mm or less are bored to penetrate the metal plate 3 from the resin film 1.SELECTED DRAWING: Figure 1
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Inventors:
SAITO TAKASHI
Application Number:
JP2015145436A
Publication Date:
February 02, 2017
Filing Date:
July 23, 2015
Export Citation:
Assignee:
SERAAZU:KK
International Classes:
B43L1/10; B43L1/06; G10K11/172
Domestic Patent References:
| JP2014091976A | 2014-05-19 | |||
| JP2012012761A | 2012-01-19 | |||
| JPS4913034U | 1974-02-04 | |||
| JP2007196489A | 2007-08-09 |
Attorney, Agent or Firm:
Haruo Saito
Takahiro Saito
Takahiro Saito