JPS5799098A - Diaphragm plate for acoustic device - Google Patents

Diaphragm plate for acoustic device

Info

Publication number
JPS5799098A
JPS5799098A JP16739681A JP16739681A JPS5799098A JP S5799098 A JPS5799098 A JP S5799098A JP 16739681 A JP16739681 A JP 16739681A JP 16739681 A JP16739681 A JP 16739681A JP S5799098 A JPS5799098 A JP S5799098A
Authority
JP
Japan
Prior art keywords
ethylene
diaphragm plate
films
propylene
diaphragm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16739681A
Other languages
Japanese (ja)
Inventor
Mitsuru Yashiro
Kosaku Murata
Satoshi Takayama
Nobuo Nakajima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16739681A priority Critical patent/JPS5799098A/en
Publication of JPS5799098A publication Critical patent/JPS5799098A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To make the band of sound pressure reproducing frequency wide, with excellent processing capability and low cost, by establishing a diaphragm plate through the forming of copolymer or composite between propylene and ethylene in which the content of ethylene is 2-15%. CONSTITUTION:Ten % of alpha-olefin is mixed to 100pts. of polymer which is a block copolymer between propylene and ethylene and contains 5.1% of ethylene, mixing is made by using an extruder to form a composite pellet. Films, 40mu, 50mu and 60mu thick are formed by using a film forming machine and corona discharge processing with 110kHz, 5kV, is executed, and a solution mainly including chloroprene and alkilphenol is coated on the surface to form layers of 1mu- 1.2mu in thickness. The diaphragm is made by using the films.
JP16739681A 1981-10-19 1981-10-19 Diaphragm plate for acoustic device Pending JPS5799098A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16739681A JPS5799098A (en) 1981-10-19 1981-10-19 Diaphragm plate for acoustic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16739681A JPS5799098A (en) 1981-10-19 1981-10-19 Diaphragm plate for acoustic device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP9913976A Division JPS5324828A (en) 1976-08-18 1976-08-18 Vibration plate for acoustic instrument and pre paration therefor

Publications (1)

Publication Number Publication Date
JPS5799098A true JPS5799098A (en) 1982-06-19

Family

ID=15848918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16739681A Pending JPS5799098A (en) 1981-10-19 1981-10-19 Diaphragm plate for acoustic device

Country Status (1)

Country Link
JP (1) JPS5799098A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1100287A1 (en) * 1999-11-10 2001-05-16 M- Tech(HK) Co. Ltd Loudspeaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5324828A (en) * 1976-08-18 1978-03-08 Matsushita Electric Ind Co Ltd Vibration plate for acoustic instrument and pre paration therefor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5324828A (en) * 1976-08-18 1978-03-08 Matsushita Electric Ind Co Ltd Vibration plate for acoustic instrument and pre paration therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1100287A1 (en) * 1999-11-10 2001-05-16 M- Tech(HK) Co. Ltd Loudspeaker

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