JPS645300A - Multilayer film for thin film of a speaker - Google Patents

Multilayer film for thin film of a speaker

Info

Publication number
JPS645300A
JPS645300A JP14187488A JP14187488A JPS645300A JP S645300 A JPS645300 A JP S645300A JP 14187488 A JP14187488 A JP 14187488A JP 14187488 A JP14187488 A JP 14187488A JP S645300 A JPS645300 A JP S645300A
Authority
JP
Japan
Prior art keywords
thickness
specific
whose thickness
temperature range
thermoplastic
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
JP14187488A
Other languages
Japanese (ja)
Inventor
Banku Yoahimu
Furaitaaku Deiitaa
Barudenraato Berunaa
Burukuharuto Kurausu
Shiyumorants Hansuuborufugangu
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of JPS645300A publication Critical patent/JPS645300A/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; ELECTRIC HEARING AIDS; 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/029—Diaphragms comprising fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Laminated Bodies (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: To improve the acoustic characteristic at low and high frequency regions by forming a multi-layer film having a specific thickness with a thermoplastic synthetic material having an E-modulus of a specific Mpa and a thickness, a material having a specific mechanical loss factor for a limited temperature range and processed to a specific thickness in a thermoplastic way and a thermoplastic sealing layer. CONSTITUTION: A multi-layer film whose thickness is 50-700μm is formed with a film whose thickness is 0.02-0.6mm having an E-modulus of 1000-200,000MPa, a film whose thickness is 0.01-0.3mm having a mechanical loss factor tanδ of 10<-2> -10<1> for a temperature range of -40-+200 deg.C and a thermoplastic sealing layer whose thickness is 0.05-0.1mm having a mechanical loss factor tanδ of 10<-2> -10<2> for the temperature range as above. Thus, low characteristic resonance is obtained for a frequency region of 1000Hz or below and a high response is obtained for a frequency smaller than 10,000Hz in the characteristic of a speaker system.
JP14187488A 1987-06-13 1988-06-10 Multilayer film for thin film of a speaker Pending JPS645300A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873719879 DE3719879A1 (en) 1987-06-13 1987-06-13 MULTILAYER FILMS FOR SPEAKER MEMBRANE SYSTEMS

Publications (1)

Publication Number Publication Date
JPS645300A true JPS645300A (en) 1989-01-10

Family

ID=6329706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14187488A Pending JPS645300A (en) 1987-06-13 1988-06-10 Multilayer film for thin film of a speaker

Country Status (3)

Country Link
EP (1) EP0295494A3 (en)
JP (1) JPS645300A (en)
DE (1) DE3719879A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007221754A (en) * 2006-01-23 2007-08-30 Mitsubishi Plastics Ind Ltd Speaker diaphragm
JP2008131239A (en) * 2006-11-20 2008-06-05 Mitsubishi Plastics Ind Ltd Diaphragm for electroacoustic transducer and film for the diaphragm
US8389672B2 (en) 2006-01-23 2013-03-05 Mitsubishi Plastics, Inc. Diaphragm for electro-accoustic transducer

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3911066A1 (en) * 1989-04-06 1990-10-18 Bayer Ag MULTILAYER FILMS FOR CRASH PAD APPLICATION
DE4028888A1 (en) * 1990-09-12 1992-03-19 Bayer Ag MULTILAYER FILMS
CN114502376B (en) * 2019-09-26 2025-04-01 3M创新有限公司 Multilayer film and method for preparing the same
CN113411738B (en) * 2020-03-17 2023-08-22 3M创新有限公司 Sound membrane for micro-speaker and preparation method thereof
CN113411737B (en) 2020-03-17 2023-03-10 3M创新有限公司 Acoustic film for micro-speaker and preparation method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1435588A (en) * 1973-05-30 1976-05-12 Mitsui Petrochemical Ind Process
GB1563511A (en) * 1976-03-19 1980-03-26 Harwood H Diaphragms for electroacoustic transducers
JPS61130046A (en) * 1984-11-28 1986-06-17 ポリプラスチックス株式会社 Manufacturing method of laminate film

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007221754A (en) * 2006-01-23 2007-08-30 Mitsubishi Plastics Ind Ltd Speaker diaphragm
US8389672B2 (en) 2006-01-23 2013-03-05 Mitsubishi Plastics, Inc. Diaphragm for electro-accoustic transducer
US8623970B2 (en) 2006-01-23 2014-01-07 Mitsubishi Plastics, Inc. Diaphragm for electro-acoustic transducer
JP2008131239A (en) * 2006-11-20 2008-06-05 Mitsubishi Plastics Ind Ltd Diaphragm for electroacoustic transducer and film for the diaphragm

Also Published As

Publication number Publication date
EP0295494A2 (en) 1988-12-21
DE3719879A1 (en) 1988-12-29
EP0295494A3 (en) 1990-07-18

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