JPS5272217A - Production of cone supporting material for speakers - Google Patents

Production of cone supporting material for speakers

Info

Publication number
JPS5272217A
JPS5272217A JP14793875A JP14793875A JPS5272217A JP S5272217 A JPS5272217 A JP S5272217A JP 14793875 A JP14793875 A JP 14793875A JP 14793875 A JP14793875 A JP 14793875A JP S5272217 A JPS5272217 A JP S5272217A
Authority
JP
Japan
Prior art keywords
production
speakers
supporting material
cone supporting
heating
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
JP14793875A
Other languages
Japanese (ja)
Inventor
Isao Obara
Osami Kaneto
Shinichiro Kawamura
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
Original Assignee
Hitachi 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 filed Critical Hitachi Ltd
Priority to JP14793875A priority Critical patent/JPS5272217A/en
Publication of JPS5272217A publication Critical patent/JPS5272217A/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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension

Landscapes

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

Abstract

PURPOSE:Volume production is facilitated by heating a thermoplastic molding material to its softening temperature, molding said material in moldes kept at room temperature, then instantaneously cooling the molds thereby performing the heating and cooling of the material continuously.
JP14793875A 1975-12-13 1975-12-13 Production of cone supporting material for speakers Pending JPS5272217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14793875A JPS5272217A (en) 1975-12-13 1975-12-13 Production of cone supporting material for speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14793875A JPS5272217A (en) 1975-12-13 1975-12-13 Production of cone supporting material for speakers

Publications (1)

Publication Number Publication Date
JPS5272217A true JPS5272217A (en) 1977-06-16

Family

ID=15441444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14793875A Pending JPS5272217A (en) 1975-12-13 1975-12-13 Production of cone supporting material for speakers

Country Status (1)

Country Link
JP (1) JPS5272217A (en)

Similar Documents

Publication Publication Date Title
FR63781E (en) Process for the continuous manufacture of hollow articles in thermoplastic material
FR2284432A1 (en) PROCESS FOR THE PRODUCTION OF PARTS OF THERMOPLASTIC CELLULAR MATERIAL
ES317709A1 (en) Method of formation of a foamed and configured cellular thermoplastic article. (Machine-translation by Google Translate, not legally binding)
ES330975A1 (en) A method of production of a alveolated polystyrene product with a hard exterior surface. (Machine-translation by Google Translate, not legally binding)
JPS5272217A (en) Production of cone supporting material for speakers
JPS52124265A (en) Producing process of inner plate for heat-insulating wall
SE7609842L (en) APPARATUS FOR ADJUSTING THE DISTRIBUTION OF PLASTIC MATERIAL IN THE MANUFACTURE OF PLASTIC CONTAINERS
JPS53105564A (en) Production of thin-wall plastic molded product and device therefor
JPS5263264A (en) Process for manufacture of sheet foam material by molding and die therefor
JPS5379527A (en) Molding method of thin plate material
JPS564998A (en) Manufacture of edge for speaker diaphragm
GB704718A (en) Improvements in and relating to the production of hollow glass vessels
ES229062A3 (en) Procedure of continuous manufacture of padded sheets of thermoplastic materials (Machine-translation by Google Translate, not legally binding)
AU213579B2 (en) Process for producing coloured thermoplastic sheet material
ES259147A1 (en) Improvements in or relating to machines for and methods of moulding hollow bodies
JPS5260119A (en) Manufacture of audio equipment cabinet
JPS52147346A (en) Heating method of materials
AU405097B2 (en) Thermoplastic polymer particles expandable by heat, a process forthe preparation ofthe particles, anda process forthe production of cellular polymer materials
JPS51136518A (en) Process for producing silicon-containing reducing agent for purification of cast iron
CA986270A (en) Molding process for the manufacture of shaped carbon articles
AU5575065A (en) Thermoplastic polymer particles expandable by heat, a process forthe preparation ofthe particles, anda process forthe production of cellular polymer materials
AU266854B2 (en) Process forthe manufacture of articles of heat weldable cellular:material
JPS5225617A (en) Equipment and molding method of metal cone for speakers
GB887831A (en) Improvements in or relating to hollow articles
ES324180A1 (en) Procedure and apparatus for molding articles of thermoelastically deformable material. (Machine-translation by Google Translate, not legally binding)