ACOUSTIC VIBRATOR AND ITS MANUFACTURE

PURPOSE:To obtain a light vibrator having high elasticity by giving the specified range weight % of a polyolefin polymer, the specific weight % of mica having the weight average flake diameter of a specific range and a weight average aspect ratio more than a specific value, and the specific weight %...

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Bibliographic Details
Main Authors FUJII KIYONOBU, HORI NAONOBU
Format Patent
LanguageEnglish
Published 10.01.1991
Subjects
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
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Summary:PURPOSE:To obtain a light vibrator having high elasticity by giving the specified range weight % of a polyolefin polymer, the specific weight % of mica having the weight average flake diameter of a specific range and a weight average aspect ratio more than a specific value, and the specific weight % of aluminum flake having the weight average flake diameter of the specific range. CONSTITUTION:An acoustic vibrator consists of 50-90weight% of polyolefin group polymer, 9.5-49.5weight% of mica having the weight mean flake diameter of 5-30mum and the weight mean aspect rate of more than '5', and 0.5-5weight% of Al flake having the weight mean flake diameter of 5-30mum. The polyolefin group polymer, mica and the Al flake are melted and mixed. A sheet material is formed from an obtained composite material and it is shaped into an arbitral form. Thus, the light acoustic vibrator which has high elasticity, high internal loss and the luster of color metal is supplied.
Bibliography:Application Number: JP19890140200