EP0295494A3 - Multilayer film for loudspeaker membranes - Google Patents
Multilayer film for loudspeaker membranes Download PDFInfo
- 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- Withdrawn
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)
- Compositions Of Macromolecular Compounds (AREA)
- Diaphragms For Electromechanical Transducers (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.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873719879 DE3719879A1 (en) | 1987-06-13 | 1987-06-13 | MULTILAYER FILMS FOR SPEAKER MEMBRANE SYSTEMS |
DE3719879 | 1987-06-13 |
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)
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 |
WO2007083751A1 (en) | 2006-01-23 | 2007-07-26 | Mitsubishi Plastics, Inc. | Diaphragm for electro-acoustic 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 |
US11731408B2 (en) * | 2019-09-26 | 2023-08-22 | 3M Innovative Properties Company | Multilayer film and method of making 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 | Sound film for micro loudspeaker and preparation method thereof |
Citations (3)
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 |
-
1987
- 1987-06-13 DE DE19873719879 patent/DE3719879A1/en not_active Withdrawn
-
1988
- 1988-06-01 EP EP88108730A patent/EP0295494A3/en not_active Withdrawn
- 1988-06-10 JP JP14187488A patent/JPS645300A/en active Pending
Patent Citations (3)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19880603 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
RHK1 | Main classification (correction) |
Ipc: H04R 7/10 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB IT |
|
17Q | First examination report despatched |
Effective date: 19921214 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19930205 |