MANUFACTURING METHOD FOR NARROW-TYPE DIAPHRAGM AND THIN-TYPE DIAPHRAGM, SPEAKER-USE DIAPHRAGM MANUFACTURED USING SAME MANUFACTURING METHOD, SPEAKER, ELECTRONIC APPARATUS, AND MOVABLE DEVICE

MANUFACTURING METHOD FOR NARROW-TYPE DIAPHRAGM AND THIN-TYPE DIAPHRAGM, SPEAKER-USE DIAPHRAGM MANUFACTURED USING SAME MANUFACTURING METHOD, SPEAKER, ELECTRONIC APPARATUS, AND MOVABLE DEVICE

After beaten, pulp is mixed with a filler to obtain a mixture of the pulp and the filler. Additives are added to the mixture, which is made into pater and then hot-pressed. The filler content of the mixture is in the range of 20 wt % to 80 wt %. After the additives are added, a polymeric viscosity i...

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Bibliographische Detailangaben
1. Verfasser: JIN YOHEI
Format: Patent
Sprache:eng
Schlagworte:
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:After beaten, pulp is mixed with a filler to obtain a mixture of the pulp and the filler. Additives are added to the mixture, which is made into pater and then hot-pressed. The filler content of the mixture is in the range of 20 wt % to 80 wt %. After the additives are added, a polymeric viscosity improver with high viscosity is added to produce a narrow diaphragm or a thin compact diaphragm with high aspect ratio. These diaphragms have high rigidity and a wide reproduction frequency range.