EP0295494A3 - Multilayer film for loudspeaker membranes - Google Patents

Multilayer film for loudspeaker membranes Download PDF

Info

Publication number
EP0295494A3
EP0295494A3 EP88108730A EP88108730A EP0295494A3 EP 0295494 A3 EP0295494 A3 EP 0295494A3 EP 88108730 A EP88108730 A EP 88108730A EP 88108730 A EP88108730 A EP 88108730A EP 0295494 A3 EP0295494 A3 EP 0295494A3
Authority
EP
European Patent Office
Prior art keywords
thick
multilayer film
loss factor
membranes
mechanical loss
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.)
Withdrawn
Application number
EP88108730A
Other languages
German (de)
French (fr)
Other versions
EP0295494A2 (en
Inventor
Joachim Dipl.-Ing. Wank
Dieter Dr. Freitag
Werner Dipl.-Ing. Waldenrath
Claus Dr. Burkhardt
Hans-Wolfgang Dipl.-Ing. Schmoranzer
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 EP0295494A2 publication Critical patent/EP0295494A2/en
Publication of EP0295494A3 publication Critical patent/EP0295494A3/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • H04R7/12—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; DEAF-AID SETS; 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

Mehrschichtfolien einer Dicke von 0,05 bis 0,7 mm, be­ stehend aus einer 0,02 bis 0,6 mm dicken thermopla­ stischen Kunststoff- oder metallischen Folie mit einem E-Modul von 1000 bis 200000 MPa, einer 0,01 bis 0,3 mm dicken Folie aus thermoplastisch verarbeitbarem Material mit einem mechanischen Verlustfaktor tan δ im Tempera­ turbereich -40 bis +200°C zwischen 10⁻² und 10¹ und einer 0,05 bis 0,1 mm dicken thermoplastischen Siegel­ schicht, deren mechanischer Verlustfaktor tan δ im Temperaturbereich -40 bis 200°C zwischen 10⁻² und 10² liegt, sowie ihre Verwendung zur Herstellung von Laut­ sprechenmembranen oder -konen. Multilayer films with a thickness of 0.05 to 0.7 mm, be standing from a 0.02 to 0.6 mm thick thermopla plastic or metallic foil with a E-module from 1000 to 200000 MPa, one 0.01 to 0.3 mm thick film made of thermoplastic material with a mechanical loss factor tan δ in tempera ture range -40 to + 200 ° C between 10⁻² and 10¹ and a 0.05 to 0.1 mm thick thermoplastic seal layer whose mechanical loss factor tan δ im Temperature range -40 to 200 ° C between 10⁻² and 10² lies, as well as their use for the production of sound speech membranes or cones.

EP88108730A 1987-06-13 1988-06-01 Multilayer film for loudspeaker membranes Withdrawn EP0295494A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3719879 1987-06-13
DE19873719879 DE3719879A1 (en) 1987-06-13 1987-06-13 MULTILAYER FILMS FOR SPEAKER MEMBRANE SYSTEMS

Publications (2)

Publication Number Publication Date
EP0295494A2 EP0295494A2 (en) 1988-12-21
EP0295494A3 true EP0295494A3 (en) 1990-07-18

Family

ID=6329706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108730A Withdrawn EP0295494A3 (en) 1987-06-13 1988-06-01 Multilayer film for loudspeaker membranes

Country Status (3)

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

Families Citing this family (8)

* 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
US8389672B2 (en) 2006-01-23 2013-03-05 Mitsubishi Plastics, Inc. Diaphragm for electro-accoustic transducer
JP5127198B2 (en) * 2006-01-23 2013-01-23 三菱樹脂株式会社 Speaker diaphragm
JP4990601B2 (en) * 2006-11-20 2012-08-01 三菱樹脂株式会社 Diaphragm for electroacoustic transducer and film for the diaphragm
WO2021059101A1 (en) * 2019-09-26 2021-04-01 3M Innovative Properties Company Multilayer film and method of making the same
CN113411737B (en) * 2020-03-17 2023-03-10 3M创新有限公司 Sound film for micro loudspeaker and preparation method thereof
CN113411738B (en) * 2020-03-17 2023-08-22 3M创新有限公司 Sound membrane for micro-speaker and preparation method thereof

Citations (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
FR2345048A1 (en) * 1976-03-19 1977-10-14 Harwood Hugh ELECTRO-ACOUSTIC TRANSDUCER MEMBRANE
EP0183516A2 (en) * 1984-11-28 1986-06-04 Polyplastics Co. Ltd. Method of manufacturing a laminated film

Patent Citations (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
FR2345048A1 (en) * 1976-03-19 1977-10-14 Harwood Hugh ELECTRO-ACOUSTIC TRANSDUCER MEMBRANE
EP0183516A2 (en) * 1984-11-28 1986-06-04 Polyplastics Co. Ltd. Method of manufacturing a laminated film

Also Published As

Publication number Publication date
DE3719879A1 (en) 1988-12-29
JPS645300A (en) 1989-01-10
EP0295494A2 (en) 1988-12-21

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