PURPOSE: To improve a sound pressure frequency characteristic, and moreover, to obtain a diaphragm for an electroacoustic transducer which is excellent in a heat resistance, a moisture resistance, a dimension stability, etc., by making a full aromatic polyester fiber into an essential construction member.
CONSTITUTION: The full aromatic polyester fiber is made into the essential construction member. Namely, the fabric of such a full aromatic polyester fiber is used as a substrate for the diaphragm, and it is made into the diaphragm by being fix-molded in a prescribed shape by a known thermosetting resin such as an epoxy resin and a phenol resin or a known thermoplastic resin such as a polypropylene, a nylon and a polyacrylate resin. Thus, the diaphragm for the electroacoustic transducer can be obtained in which a Young's modulus is high, a unit area weight is small in a low density and, further, which has the internal loss of a proper largeness, and the flat sound pressure frequency characteristic can be obtained in an intermediate and high bands.
KANAMARU TATSUMI
TSUCHIYA KAZUO
SHIMURA SUSUMU
TAKAHASHI MASANORI
KURARAY CO
PIONEER CONE CORP
| JPS6236999A | 1987-02-17 | |||
| JPH0193999A | 1989-04-12 |
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