GB1292224A - Heating conductors and process for their manufacture - Google Patents

Heating conductors and process for their manufacture

Info

Publication number
GB1292224A
GB1292224A GB1041970A GB1041970A GB1292224A GB 1292224 A GB1292224 A GB 1292224A GB 1041970 A GB1041970 A GB 1041970A GB 1041970 A GB1041970 A GB 1041970A GB 1292224 A GB1292224 A GB 1292224A
Authority
GB
United Kingdom
Prior art keywords
covering
soot
sintered
graphite
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.)
Expired
Application number
GB1041970A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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
Priority claimed from DE19691911099 external-priority patent/DE1911099C/en
Application filed by Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1292224A publication Critical patent/GB1292224A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/146—Conductive polymers, e.g. polyethylene, thermoplastics

Landscapes

  • Resistance Heating (AREA)
  • Conductive Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Surface Heating Bodies (AREA)

Abstract

1292224 Extruding P.T.F.E. FARBWERKE HOECHST AG 4 March 1970 [5 March 1969] 10419/70 Heading B5A [Also in Division H5] An electrical heating conductor comprises a conductive core 9 of a mixture of graphite, and/ or soot with polytetrafluoroethylene (P.T.F.E.), the weight ratio of graphite and/or soot to P.T.F.E. being from 0À1 : 1 to 2 : 1, and an insulating covering 10 of P.T.F.E. The heater is preformed in a mould, Figs. 1, 2 (not shown), and then extruded through a die 8 having, for example, a circular orifice. The core and covering may include a lubricant, such as white spirit, which is removed by heating, after extrusion, in a continuous heating furnace. The extrudate is then sintered and solidified. Alternatively, a rod-shaped extrudate made without the covering 10 is wound with a non-sintered P.T.F.E. tape and then sintered, or is provided with an extruded covering separately. The heating conductors are of circular or rectangular cross-section, Figs. 4, 5 (not shown). The preferred relative proportions of graphite, soot and P.T.F.E., and the particle sizes, are specified in a number of examples.
GB1041970A 1969-03-05 1970-03-04 Heating conductors and process for their manufacture Expired GB1292224A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691911099 DE1911099C (en) 1969-03-05 Electric heating cables and processes for their production

Publications (1)

Publication Number Publication Date
GB1292224A true GB1292224A (en) 1972-10-11

Family

ID=5727151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1041970A Expired GB1292224A (en) 1969-03-05 1970-03-04 Heating conductors and process for their manufacture

Country Status (8)

Country Link
JP (1) JPS5022261B1 (en)
AT (1) AT292867B (en)
BE (1) BE746910A (en)
CH (1) CH504827A (en)
FR (1) FR2034676A1 (en)
GB (1) GB1292224A (en)
NL (1) NL7002659A (en)
NO (1) NO128513B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179228A (en) * 1985-06-21 1987-02-25 Traveller International Produc Portable immersion heater
US5916485A (en) * 1991-12-11 1999-06-29 Atotech Deutschland Gmbh Method of manufacturing highly conducting composites containing only small proportions of electron conductors

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419302A (en) * 1979-09-29 1983-12-06 Matsushita Electric Industrial Company, Limited Steam generator
US4390776A (en) * 1982-03-01 1983-06-28 Yane Daryl J Immersion heater

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878353A (en) * 1954-12-16 1959-03-17 Du Pont Electrical resistors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179228A (en) * 1985-06-21 1987-02-25 Traveller International Produc Portable immersion heater
US5916485A (en) * 1991-12-11 1999-06-29 Atotech Deutschland Gmbh Method of manufacturing highly conducting composites containing only small proportions of electron conductors

Also Published As

Publication number Publication date
BE746910A (en) 1970-09-07
NO128513B (en) 1973-11-26
NL7002659A (en) 1970-09-08
CH504827A (en) 1971-03-15
DE1911099A1 (en) 1970-10-01
AT292867B (en) 1971-09-10
JPS5022261B1 (en) 1975-07-29
FR2034676A1 (en) 1970-12-11

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees