发明名称 |
Loudspeaker and a method for producing the same |
摘要 |
Water-proofed natural pulp or organic synthetic fibers are with polyester-type fibers having a low melting point, and subjected to a paper fabrication process. The fabricated product is dried with hot air at a temperature higher than the melting point of the polyester-type fibers, thereby melt-bonding only intersections of the fibers without completely fusing the polyester-type fibers. The pressure of the hot air contributes to the formation of a predetermined shape. Thus, a water-proof diaphragm for a loudspeaker, having a large thickness, a low density, a high internal loss and a high stiffness, is obtained. By incorporating the thus formed diaphragm, a high-performance loudspeaker having a low distortion and a broad reproducing range is obtained.
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申请公布号 |
US5903658(A) |
申请公布日期 |
1999.05.11 |
申请号 |
US19980013703 |
申请日期 |
1998.01.26 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
OKAZAKI, MASATOSHI;MIZONE, SHINYA;SHIMIZU, TOSHIHIRO |
分类号 |
H04R7/02;(IPC1-7):H04R25/00 |
主分类号 |
H04R7/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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