Title:
POROUS SOUND ABSORPTION PLATE
Document Type and Number:
Japanese Patent JP2018159935
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve a sound absorption performance of a porous plate by painting, instead of avoidance of deterioration of the sound absorption performance.SOLUTION: There is provided a porous sound absorption plate 1 comprising many open holes 4. Coats 7(7a) are provided on inner wall faces of the open holes 4 of the porous plates 6 as base materials forming the porous sound absorption plate 1, the coats 7(7a) form an open hole part 8 whose volume is smaller than that of the open hole 4.SELECTED DRAWING: Figure 2
Inventors:
YAMAGUCHI ZENZO
YAMAGIWA ICHIRO
YAMAGIWA ICHIRO
Application Number:
JP2018096299A
Publication Date:
October 11, 2018
Filing Date:
May 18, 2018
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
G10K11/16; E01F8/00
Attorney, Agent or Firm:
Kaji/Suhara Patent Office