GB1449261A - Self-limitting conductive extrudates and methods for their manufacture - Google Patents

Self-limitting conductive extrudates and methods for their manufacture

Info

Publication number
GB1449261A
GB1449261A GB4213973A GB4213973A GB1449261A GB 1449261 A GB1449261 A GB 1449261A GB 4213973 A GB4213973 A GB 4213973A GB 4213973 A GB4213973 A GB 4213973A GB 1449261 A GB1449261 A GB 1449261A
Authority
GB
United Kingdom
Prior art keywords
polymer
extruded
annealing
copolymers
jacket
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.)
Expired
Application number
GB4213973A
Other languages
English (en)
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.)
Raychem Corp
Original Assignee
Raychem 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 Raychem Corp filed Critical Raychem Corp
Publication of GB1449261A publication Critical patent/GB1449261A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20Conductive material dispersed in non-conductive organic material
    • H01B1/24Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C7/00Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/027Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient consisting of conducting or semi-conducting material dispersed in a non-conductive organic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07Flat, e.g. panels
    • B29C48/08Flat, e.g. panels flexible, e.g. films

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Ceramic Engineering (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Conductive Materials (AREA)
  • Materials For Medical Uses (AREA)
GB4213973A 1972-09-08 1973-09-07 Self-limitting conductive extrudates and methods for their manufacture Expired GB1449261A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28744272A 1972-09-08 1972-09-08

Publications (1)

Publication Number Publication Date
GB1449261A true GB1449261A (en) 1976-09-15

Family

ID=23102932

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4213973A Expired GB1449261A (en) 1972-09-08 1973-09-07 Self-limitting conductive extrudates and methods for their manufacture

Country Status (7)

Country Link
JP (1) JPS4968297A (enrdf_load_stackoverflow)
BE (1) BE804627A (enrdf_load_stackoverflow)
CA (1) CA1014314A (enrdf_load_stackoverflow)
DE (1) DE2345320C2 (enrdf_load_stackoverflow)
FR (1) FR2199172B1 (enrdf_load_stackoverflow)
GB (1) GB1449261A (enrdf_load_stackoverflow)
HK (1) HK1382A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4935156A (en) * 1981-09-09 1990-06-19 Raychem Corporation Conductive polymer compositions
US5025131A (en) * 1981-09-09 1991-06-18 Raychem Corporation Method of heating diesel fuel utilizing conductive polymer heating elements
US5093898A (en) * 1981-09-09 1992-03-03 Raychem Corporation Electrical device utilizing conductive polymer composition
US5864280A (en) * 1995-09-29 1999-01-26 Littlefuse, Inc. Electrical circuits with improved overcurrent protection
US6023403A (en) 1996-05-03 2000-02-08 Littlefuse, Inc. Surface mountable electrical device comprising a PTC and fusible element
US6282072B1 (en) 1998-02-24 2001-08-28 Littelfuse, Inc. Electrical devices having a polymer PTC array
US6582647B1 (en) 1998-10-01 2003-06-24 Littelfuse, Inc. Method for heat treating PTC devices
US6628498B2 (en) 2000-08-28 2003-09-30 Steven J. Whitney Integrated electrostatic discharge and overcurrent device
US7132922B2 (en) 2002-04-08 2006-11-07 Littelfuse, Inc. Direct application voltage variable material, components thereof and devices employing same
US7183891B2 (en) 2002-04-08 2007-02-27 Littelfuse, Inc. Direct application voltage variable material, devices employing same and methods of manufacturing such devices
US7202770B2 (en) 2002-04-08 2007-04-10 Littelfuse, Inc. Voltage variable material for direct application and devices employing same
CN110480863A (zh) * 2018-05-15 2019-11-22 东芝机械株式会社 导电性复合材料的制造方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188276A (en) * 1975-08-04 1980-02-12 Raychem Corporation Voltage stable positive temperature coefficient of resistance crosslinked compositions
US4388607A (en) 1976-12-16 1983-06-14 Raychem Corporation Conductive polymer compositions, and to devices comprising such compositions
GB1597007A (en) * 1976-12-16 1981-09-03 Raychem Corp Conductive polymer compositions and devices
US4237441A (en) * 1978-12-01 1980-12-02 Raychem Corporation Low resistivity PTC compositions
US4277673A (en) * 1979-03-26 1981-07-07 E-B Industries, Inc. Electrically conductive self-regulating article
JPS59102940A (ja) * 1982-12-06 1984-06-14 Hitachi Cable Ltd 自己温度制御性ヒ−タ用樹脂組成物
US5494610A (en) * 1992-06-29 1996-02-27 Lovell; Walter C. Apparatus and method for providing medium temperature conductive-resistant articles
CN115376734B (zh) * 2022-08-09 2025-03-18 安徽徽宁电器仪表集团有限公司 一种伴热电力电缆

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE562035A (enrdf_load_stackoverflow) *
US3243753A (en) * 1962-11-13 1966-03-29 Kohler Fred Resistance element
US3351882A (en) * 1964-10-09 1967-11-07 Polyelectric Corp Plastic resistance elements and methods for making same
US3410984A (en) * 1966-05-03 1968-11-12 Gen Electric Flexible electrically heated personal warming device
US3435401A (en) * 1966-10-05 1969-03-25 Texas Instruments Inc Insulated electrical conductors
GB1201166A (en) * 1967-12-04 1970-08-05 Ici Ltd Conducting plastic articles
CA949637A (en) * 1970-08-03 1974-06-18 Henry J. Stinger Process for making electrically conductive heating elements

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4935156A (en) * 1981-09-09 1990-06-19 Raychem Corporation Conductive polymer compositions
US5025131A (en) * 1981-09-09 1991-06-18 Raychem Corporation Method of heating diesel fuel utilizing conductive polymer heating elements
US5093898A (en) * 1981-09-09 1992-03-03 Raychem Corporation Electrical device utilizing conductive polymer composition
US5864280A (en) * 1995-09-29 1999-01-26 Littlefuse, Inc. Electrical circuits with improved overcurrent protection
US5880668A (en) * 1995-09-29 1999-03-09 Littelfuse, Inc. Electrical devices having improved PTC polymeric compositions
US6059997A (en) * 1995-09-29 2000-05-09 Littlelfuse, Inc. Polymeric PTC compositions
US6023403A (en) 1996-05-03 2000-02-08 Littlefuse, Inc. Surface mountable electrical device comprising a PTC and fusible element
US6282072B1 (en) 1998-02-24 2001-08-28 Littelfuse, Inc. Electrical devices having a polymer PTC array
US6582647B1 (en) 1998-10-01 2003-06-24 Littelfuse, Inc. Method for heat treating PTC devices
US6628498B2 (en) 2000-08-28 2003-09-30 Steven J. Whitney Integrated electrostatic discharge and overcurrent device
US7132922B2 (en) 2002-04-08 2006-11-07 Littelfuse, Inc. Direct application voltage variable material, components thereof and devices employing same
US7183891B2 (en) 2002-04-08 2007-02-27 Littelfuse, Inc. Direct application voltage variable material, devices employing same and methods of manufacturing such devices
US7202770B2 (en) 2002-04-08 2007-04-10 Littelfuse, Inc. Voltage variable material for direct application and devices employing same
US7609141B2 (en) 2002-04-08 2009-10-27 Littelfuse, Inc. Flexible circuit having overvoltage protection
US7843308B2 (en) 2002-04-08 2010-11-30 Littlefuse, Inc. Direct application voltage variable material
CN110480863A (zh) * 2018-05-15 2019-11-22 东芝机械株式会社 导电性复合材料的制造方法
CN110480863B (zh) * 2018-05-15 2023-07-28 芝浦机械株式会社 导电性复合材料的制造方法

Also Published As

Publication number Publication date
BE804627A (fr) 1974-03-07
CA1014314A (en) 1977-07-26
DE2345320C2 (de) 1984-11-08
HK1382A (en) 1982-01-22
FR2199172B1 (enrdf_load_stackoverflow) 1977-09-02
FR2199172A1 (enrdf_load_stackoverflow) 1974-04-05
DE2345320A1 (de) 1974-04-04
JPS4968297A (enrdf_load_stackoverflow) 1974-07-02

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GB1449261A (en) Self-limitting conductive extrudates and methods for their manufacture
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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee