Title:
SPEAKER EDGE
Document Type and Number:
Japanese Patent JPS55135498
Kind Code:
A
Abstract:
PURPOSE: To increase the softness, the moisture resistance, the weathering resistance and the forming performance each, by soaking the rubber-group resin into the unwoven fabric of the ultrathin synthetic fiber such as polypropylene or the like.
CONSTITUTION: The rubber-group resin 4 is impregnated into the unwoven fabric of ultrathin synthetic fiber 3 of 0.03 denier or less such as polypropylene, polyamide or the like. Otherwise resin film 5 is laminated on the same unwoven fabric.
Inventors:
OKUZAWA KAZUROU
Application Number:
JP4407279A
Publication Date:
October 22, 1980
Filing Date:
April 10, 1979
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H04R7/20; H04R7/02; (IPC1-7): H04R7/20