JPS54151022A - Diaphragm for speakers - Google Patents

Diaphragm for speakers

Info

Publication number
JPS54151022A
JPS54151022A JP5968778A JP5968778A JPS54151022A JP S54151022 A JPS54151022 A JP S54151022A JP 5968778 A JP5968778 A JP 5968778A JP 5968778 A JP5968778 A JP 5968778A JP S54151022 A JPS54151022 A JP S54151022A
Authority
JP
Japan
Prior art keywords
polyethylene terephthalate
film
diaphragm
pellets
large internal
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
JP5968778A
Other languages
Japanese (ja)
Other versions
JPS5925518B2 (en
Inventor
Hirotoshi Niiguchi
Mitsuru Yashiro
Koji Takeda
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 JP5968778A priority Critical patent/JPS5925518B2/en
Publication of JPS54151022A publication Critical patent/JPS54151022A/en
Publication of JPS5925518B2 publication Critical patent/JPS5925518B2/en
Expired 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

Abstract

PURPOSE:To obtain the diaphragm of high modulus and large internal loss by directly laminating a non-oriented film composed of polyethylene terephthalate and olefin base resin on a thermoplastic film or the like. CONSTITUTION:Pellets of polyethylene of olefin base are added to pellets of polyethylene terephthalate. While these are mixed with an extruder or the like, a film is drawn out through the T die 1. The non-oriented film 2 thus extruded is directly laminated on the woven or non-woven fabric of organic synthetic fibers, natural fibers, inorganic fibers or a thermoplastic film 3. In this way, polyethylene terephthalate may be directly laminated on other stock of large internal loss without imparing its properties.
JP5968778A 1978-05-18 1978-05-18 Diaphragm for speaker Expired JPS5925518B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5968778A JPS5925518B2 (en) 1978-05-18 1978-05-18 Diaphragm for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5968778A JPS5925518B2 (en) 1978-05-18 1978-05-18 Diaphragm for speaker

Publications (2)

Publication Number Publication Date
JPS54151022A true JPS54151022A (en) 1979-11-27
JPS5925518B2 JPS5925518B2 (en) 1984-06-18

Family

ID=13120358

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5968778A Expired JPS5925518B2 (en) 1978-05-18 1978-05-18 Diaphragm for speaker

Country Status (1)

Country Link
JP (1) JPS5925518B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7708111B2 (en) * 2005-07-21 2010-05-04 Sony Corporation Acoustic diaphragm and method for manufacturing an acoustic diaphragm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7708111B2 (en) * 2005-07-21 2010-05-04 Sony Corporation Acoustic diaphragm and method for manufacturing an acoustic diaphragm

Also Published As

Publication number Publication date
JPS5925518B2 (en) 1984-06-18

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