| 摘要 |
<p>A method of producing multiple paper adapted for stabilized correlation combination while reducing the amounts of drain water and industrial waste from the papermaking process for a speaker diaphragm; and a material composition providing new sound quality. A papermaking technique is used in which paper stock (4) made in a primary papermaking process (a) is placed in a liquid containing a raw material (8) that is present in the secondary and following processes and the water is drained upwardly of a transfer form (6), while maintaining the state in which the paper stock is adsorbed by a secondary papermaking screen (5). And the paper is put together with the paper stock (4) from the primary papermaking process, thereby making paper of multiple construction as shown at (4) and (9) in (e). This diaphragm is of a construction having, on the front surface, a suitable material of high Young’s modulus and, on the back surface, a material suitable from the standpoint of internal loss and bending rigidity.</p> |
