GB2007022A - A method of polarizing a thermoplastic resin film - Google Patents

A method of polarizing a thermoplastic resin film

Info

Publication number
GB2007022A
GB2007022A GB7840865A GB7840865A GB2007022A GB 2007022 A GB2007022 A GB 2007022A GB 7840865 A GB7840865 A GB 7840865A GB 7840865 A GB7840865 A GB 7840865A GB 2007022 A GB2007022 A GB 2007022A
Authority
GB
United Kingdom
Prior art keywords
thermoplastic resin
resin film
polarizing
electrodes
film
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Withdrawn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
GB7840865A
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.)
Kureha Corp
Original Assignee
Kureha Corp
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 Kureha Corp filed Critical Kureha Corp
Publication of GB2007022A publication Critical patent/GB2007022A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/04—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning
    • H10N30/045—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning by polarising
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/09—Forming piezoelectric or electrostrictive materials
    • H10N30/098—Forming organic materials
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/857—Macromolecular compositions

Abstract

A method of polarizing a thermoplastic resin film 1 between a pair of electrodes 2, 2' comprises the steps of placing a layer of a dielectric or semiconductor material 3 whose electrical conductivity is higher than that of the thermoplastic resin film 1 between at least one of the two electrodes 2, 2' and the thermoplastic resin film 1, and applying a high voltage to the electrodes 2, 2'. Layer 3 limits the current flow through a defective area 4 of film 1, so preventing or reducing dielectric breakdown in area 4. The polarized film may be an electret or a piezoelectric or pyroelectric element. <IMAGE>
GB7840865A 1977-10-19 1978-10-17 A method of polarizing a thermoplastic resin film Withdrawn GB2007022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52124600A JPS6051279B2 (en) 1977-10-19 1977-10-19 Method for polarizing thermoplastic resin piezoelectric pyroelectric film

Publications (1)

Publication Number Publication Date
GB2007022A true GB2007022A (en) 1979-05-10

Family

ID=14889450

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7840865A Withdrawn GB2007022A (en) 1977-10-19 1978-10-17 A method of polarizing a thermoplastic resin film

Country Status (5)

Country Link
JP (1) JPS6051279B2 (en)
DE (1) DE2845255A1 (en)
FR (1) FR2406880A1 (en)
GB (1) GB2007022A (en)
NL (1) NL7810441A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050332A1 (en) * 1980-10-16 1982-04-28 Pennwalt Corporation Corona discharge poling process

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014774B2 (en) * 1978-03-31 1985-04-16 呉羽化学工業株式会社 Polyvinylidene fluoride film with excellent dielectric strength and method for producing the same
GB2079056B (en) * 1980-06-30 1985-04-17 Tokyo Shibaura Electric Co Electret device
JPS57188105A (en) * 1981-05-14 1982-11-19 Toshiba Corp Electret constituent
CH659908A5 (en) * 1982-05-26 1987-02-27 Bbc Brown Boveri & Cie METHOD FOR INCREASING THE ELECTRICAL SURFACE CONDUCTIVITY OF A BODY.
US4512941A (en) * 1983-02-14 1985-04-23 At&T Bell Laboratories Polarizing of piezoelectric material
JPS60173797A (en) * 1984-02-13 1985-09-07 Nippon Telegr & Teleph Corp <Ntt> Superconduction storage circuit
JPS6285770A (en) * 1985-10-11 1987-04-20 Oi Seisakusho Co Ltd Spoiler device for automobile
JPS6323474U (en) * 1986-07-30 1988-02-16
FR2700220B1 (en) * 1993-01-06 1995-02-17 Saint Louis Inst Method for polarizing at least one zone of a sheet of ferroelectric material, and method for producing a polarized element for piezoelectric or pyroelectric sensor.
US6561236B1 (en) 2000-03-08 2003-05-13 Sealed Air Corporation (Us) Inflatable packing and inflation apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1367738A (en) * 1971-07-20 1974-09-25 Kureha Chemical Ind Co Ltd Process for the production of polyvinylidene fluoride resin film
JPS5718641B2 (en) * 1973-07-17 1982-04-17
NL7403965A (en) * 1974-03-25 1975-09-29 Philips Nv METHOD OF MANUFACTURING A HOMOPO-LINE ELECTRET FROM A FOIL.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050332A1 (en) * 1980-10-16 1982-04-28 Pennwalt Corporation Corona discharge poling process

Also Published As

Publication number Publication date
JPS6051279B2 (en) 1985-11-13
JPS5458774A (en) 1979-05-11
DE2845255A1 (en) 1979-04-26
NL7810441A (en) 1979-04-23
FR2406880A1 (en) 1979-05-18

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)