JPS5592099A - Edge for speaker - Google Patents

Edge for speaker

Info

Publication number
JPS5592099A
JPS5592099A JP16569178A JP16569178A JPS5592099A JP S5592099 A JPS5592099 A JP S5592099A JP 16569178 A JP16569178 A JP 16569178A JP 16569178 A JP16569178 A JP 16569178A JP S5592099 A JPS5592099 A JP S5592099A
Authority
JP
Japan
Prior art keywords
internal loss
edge
synthetic pulp
fiber
compound 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.)
Granted
Application number
JP16569178A
Other languages
Japanese (ja)
Other versions
JPS5720758B2 (en
Inventor
Hirotoshi Niiguchi
Mitsuru Yashiro
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 JP16569178A priority Critical patent/JPS5592099A/en
Publication of JPS5592099A publication Critical patent/JPS5592099A/en
Publication of JPS5720758B2 publication Critical patent/JPS5720758B2/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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Abstract

PURPOSE:To improve an internal loss and make it possible to make an acoustic pressure frequency characteristic flat by laminating or soaking a thermoplastic resin onto or into a compound material where synthetic pulp and synthetic fiber are mixed and by metling synthetic pulp to bind fiber. CONSTITUTION:Synthetic pulp consisting of high-density polyethylene and acrylic fiber are mixed with rate 1:1 to form a compound material of an approximately 40g/m<2> scale. This compound material is caused to include emulsion consisting of ionomer resin and is dried, and after that, synthetic pulp is melted to form an edge material of an approximately 60g/m<2> scale. Elastic modulus E of this edge material is 4.5X10<9>dyn/cm<2>, and the internal loss is tandelta=0.10. Normally, a paper edge has elastic modulus E of 12X10<9>dyn/cm<2> and an internal loss of tandelta=0.04. Thus, this edge material has no air-permeability and has a large internal loss, so that the acoustic pressure frequency characteristic of the speaker can be made flat.
JP16569178A 1978-12-29 1978-12-29 Edge for speaker Granted JPS5592099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16569178A JPS5592099A (en) 1978-12-29 1978-12-29 Edge for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16569178A JPS5592099A (en) 1978-12-29 1978-12-29 Edge for speaker

Publications (2)

Publication Number Publication Date
JPS5592099A true JPS5592099A (en) 1980-07-12
JPS5720758B2 JPS5720758B2 (en) 1982-05-01

Family

ID=15817202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16569178A Granted JPS5592099A (en) 1978-12-29 1978-12-29 Edge for speaker

Country Status (1)

Country Link
JP (1) JPS5592099A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57111195U (en) * 1980-12-26 1982-07-09
JP2019026776A (en) * 2017-08-01 2019-02-21 三井化学株式会社 Resin premix, polyurethane foam and method for producing polyurethane foam

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57111195U (en) * 1980-12-26 1982-07-09
JP2019026776A (en) * 2017-08-01 2019-02-21 三井化学株式会社 Resin premix, polyurethane foam and method for producing polyurethane foam

Also Published As

Publication number Publication date
JPS5720758B2 (en) 1982-05-01

Similar Documents

Publication Publication Date Title
AU561924B2 (en) Perforated camouflage material
BE855890A (en) THERMO-WELDABLE COMPOSITE SHEET, IN PARTICULAR AS A PACKAGING MATERIAL
YU17579A (en) Process for the metallization of a support made of paper, carboard, wood, plastics and other materials
FR2347184A1 (en) MOLDED BODY AND SHEETS, LIGNOCELLULOSIC MATERIAL
FR2546445B3 (en) DEVICE FOR MOLDING, CUTTING AND STACKING PARTS FROM SHEETS OF THERMOPLASTIC MATERIALS
FR2329426A1 (en) COMPOSITE SHEET OF SYNTHETIC MATERIALS, ESPECIALLY FOR PACKAGING
JPS5436704A (en) Elastic roll for super-calendering megnetic tape
JPS5592099A (en) Edge for speaker
ES8307079A1 (en) Disposable diaper and top sheet therefor
GB551733A (en) Improvements in cellular materials for structural or other purposes
JPS5347816A (en) Vibrating plate for speaker
JPS5322540A (en) Adhesive tapes having tear properties in transverse direction
JPS5361581A (en) Paper sheet containing activated carbon and production thereof
JPS56126397A (en) Speaker system
JPS52154623A (en) Sound diaphragm
JPS52129425A (en) Manufacture of diaphragm for speakers
JPS5428340A (en) Bonding of sheets, films, and mats
JPS5565513A (en) Production of cover piece for thermoplastic synthetic resin bag
JPS5275314A (en) Diaphragm for speaker
AU523157B2 (en) Manufacture of fibrous polymeric sheets
JPS53133021A (en) Diaphragm for speakers
JPS5731296A (en) Speaker diaphragm
JPS566593A (en) Diaphragm
JPS5460338A (en) Production of polyolefin adhesive tape
JPS5396063A (en) Production of roof sheathing material