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JPS57109497A - Vibration diaphragm of loudspeaker - Google Patents

Vibration diaphragm of loudspeaker

Info

Publication number
JPS57109497A
JPS57109497A JP18392880A JP18392880A JPS57109497A JP S57109497 A JPS57109497 A JP S57109497A JP 18392880 A JP18392880 A JP 18392880A JP 18392880 A JP18392880 A JP 18392880A JP S57109497 A JPS57109497 A JP S57109497A
Authority
JP
Japan
Prior art keywords
adhesive agent
foaming
surface materials
epoxy resin
core material
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
JP18392880A
Other languages
Japanese (ja)
Inventor
Toshio Haneda
Makoto Kobashi
Tadahiro Rokushiya
Shuichi Takahashi
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.)
Hitachi Ltd
Nitto Denko Corp
Original Assignee
Hitachi Ltd
Nitto 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 Hitachi Ltd, Nitto Electric Industrial Co Ltd filed Critical Hitachi Ltd
Priority to JP18392880A priority Critical patent/JPS57109497A/en
Publication of JPS57109497A publication Critical patent/JPS57109497A/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
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact

Landscapes

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

Abstract

PURPOSE:To provide both functions, by using a foaming adhesive agent without separating a core material and an adhesive agent. CONSTITUTION:2 sheets each of a surface material 8 on which a foaming adhesive agent applied film 10 has been formed by applying a coating material by a surface agent to which a foaming adhesive agent film 9 has been stuck, and after that, scattering a solvent are placed at an interval of a distance 11 of a prescribed distance, and so that the adhesive agent surfaces are opposed to each other. In this state, a temperature decided by the adhesive agent is selected 150 deg.C-180 deg.C, and said surface materials are heated for 2-30min. During this time, the adhesive agent foams and expands, fills a space of the surface materials 8, simultaneously is hardened and 2 surface materials 8 are seamed through foaming epoxy resin 12. In this way, a sandwich structure plate whose core material and surface materal 8 consist of the foaming epoxy resin 12, and for instance, an aluminum alloy foil, respectively is obtained, and a vibration diaphragm is obtained by cutting it to prescribed size.
JP18392880A 1980-12-26 1980-12-26 Vibration diaphragm of loudspeaker Pending JPS57109497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18392880A JPS57109497A (en) 1980-12-26 1980-12-26 Vibration diaphragm of loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18392880A JPS57109497A (en) 1980-12-26 1980-12-26 Vibration diaphragm of loudspeaker

Publications (1)

Publication Number Publication Date
JPS57109497A true JPS57109497A (en) 1982-07-07

Family

ID=16144256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18392880A Pending JPS57109497A (en) 1980-12-26 1980-12-26 Vibration diaphragm of loudspeaker

Country Status (1)

Country Link
JP (1) JPS57109497A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0475396A (en) * 1990-07-17 1992-03-10 Nitto Denko Corp Manufacture of flexible circuit with temporarily adhered releasable sheet and flexible circuit wiht temporarily adhered releasable sheet
KR100769897B1 (en) 2004-09-10 2007-10-24 엘지전자 주식회사 dish washer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0475396A (en) * 1990-07-17 1992-03-10 Nitto Denko Corp Manufacture of flexible circuit with temporarily adhered releasable sheet and flexible circuit wiht temporarily adhered releasable sheet
KR100769897B1 (en) 2004-09-10 2007-10-24 엘지전자 주식회사 dish washer

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