Manufacturing method of diaphragm plate for loudspeaker, diaphragm for speaker manufactured by this manufacturing method, and loudspeaker using diaphragm for speaker

摘要

PROBLEM TO BE SOLVED: To provide a high productivity production process of the vibration cone of a speaker for use in various sound systems in which the vibration cone for speaker employing pulp is reproduced with high precision.;SOLUTION: A vibration cone for speaker having stabilized plane thickness and plane rigidity on the same circumference of the same vibration cone can be produced stably by generating a vortex water flow forcibly in water supplied into a paper making tub 21 and distributed to pulp, and depositing the pulp on a paper making die 22 installed in the paper making tub 21 while sustaining the vortex water flow thereby orienting pulp fibers stably in the same direction.;COPYRIGHT: (C)2007,JPO&INPIT