| 摘要 |
To manufacture a diaphragm of the present invention for use in a loud speaker, first a suspension is made by putting fibers consisting chiefly of polysaccharide constituting fibrous molecules into water. Next, suitable pressure is applied to the suspension and then the suspension is jet out into the air of normal pressure. As a result, water which has penetrated into the fibers expands rapidly. This causes the fibers to be sufficiently loosen and split into fibrils. When the fibrils are used for manufacturing a diaphragm, since the fibrils get sufficiently entangled together, a highly stiff and elastic diaphragm with high internal loss is obtained. Optimum fibrils are obtained by simply adjusting the pressure. Therefore, the control of the manufacturing process is simplified.
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