JPS5541060A - Manufacture for diaphragm for speaker - Google Patents

Manufacture for diaphragm for speaker

Info

Publication number
JPS5541060A
JPS5541060A JP11481378A JP11481378A JPS5541060A JP S5541060 A JPS5541060 A JP S5541060A JP 11481378 A JP11481378 A JP 11481378A JP 11481378 A JP11481378 A JP 11481378A JP S5541060 A JPS5541060 A JP S5541060A
Authority
JP
Japan
Prior art keywords
system resin
phenol system
powder
sio2
sic
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.)
Granted
Application number
JP11481378A
Other languages
Japanese (ja)
Other versions
JPS5718396B2 (en
Inventor
Noboru Koizumi
Kazuro Okuzawa
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 JP11481378A priority Critical patent/JPS5541060A/en
Publication of JPS5541060A publication Critical patent/JPS5541060A/en
Publication of JPS5718396B2 publication Critical patent/JPS5718396B2/ja
Granted 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 enable manufacture of plate excellent in rigidity, and molding processing. without pollution, adand low cost, by immersing phenol system resin mixing powder such as silicon to the base material consisting of hardened phenol system resin fiber. CONSTITUTION:To the base material 1 consisting of hardened phenol system resin fiber, the hardened phenol system resin 3 uniformly mixing monomor of Si, SiO2, SiC, Ti, and B or several powder 2 by 5-10wt.% is immersed, and this is heated and molded to a given speaker diaphragm shape at 160-200 deg.C. Next, the molded one is increased gradually in temperature under no oxygen or inactive gas atmosphere, and it is sintered and carbonized at temperatures more than 1000 deg.C in which the powder 2 such as Si, SiO2, SiC, Ti, B can be molten, for 4-5hrs.
JP11481378A 1978-09-18 1978-09-18 Manufacture for diaphragm for speaker Granted JPS5541060A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11481378A JPS5541060A (en) 1978-09-18 1978-09-18 Manufacture for diaphragm for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11481378A JPS5541060A (en) 1978-09-18 1978-09-18 Manufacture for diaphragm for speaker

Publications (2)

Publication Number Publication Date
JPS5541060A true JPS5541060A (en) 1980-03-22
JPS5718396B2 JPS5718396B2 (en) 1982-04-16

Family

ID=14647317

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11481378A Granted JPS5541060A (en) 1978-09-18 1978-09-18 Manufacture for diaphragm for speaker

Country Status (1)

Country Link
JP (1) JPS5541060A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59182195U (en) * 1983-05-23 1984-12-05 池田物産株式会社 cigarette ring
JPS6031728A (en) * 1983-07-29 1985-02-18 日本ユニット株式会社 Shoe cleaner
KR920011400A (en) * 1990-12-06 1992-07-24 정해근 Cigarettes with fire rings

Also Published As

Publication number Publication date
JPS5718396B2 (en) 1982-04-16

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