EP1484945A1 - Elektrische Heizleitung oder Heizband - Google Patents
Elektrische Heizleitung oder Heizband Download PDFInfo
- Publication number
- EP1484945A1 EP1484945A1 EP04010990A EP04010990A EP1484945A1 EP 1484945 A1 EP1484945 A1 EP 1484945A1 EP 04010990 A EP04010990 A EP 04010990A EP 04010990 A EP04010990 A EP 04010990A EP 1484945 A1 EP1484945 A1 EP 1484945A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- polytetrafluoroethylene
- tape
- insulating layer
- tape according
- 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
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 103
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 63
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 62
- -1 polytetrafluoro-ethylene Polymers 0.000 claims abstract description 46
- 229920002313 fluoropolymer Polymers 0.000 claims abstract description 28
- 239000004811 fluoropolymer Substances 0.000 claims abstract description 27
- 239000010410 layer Substances 0.000 claims description 67
- 239000004020 conductor Substances 0.000 claims description 55
- 238000009413 insulation Methods 0.000 claims description 35
- 230000001681 protective effect Effects 0.000 claims description 26
- 239000000155 melt Substances 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 14
- 229940058401 polytetrafluoroethylene Drugs 0.000 abstract 3
- 239000000463 material Substances 0.000 description 12
- 229920000642 polymer Polymers 0.000 description 11
- 230000006378 damage Effects 0.000 description 6
- 238000000576 coating method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- QHSJIZLJUFMIFP-UHFFFAOYSA-N ethene;1,1,2,2-tetrafluoroethene Chemical group C=C.FC(F)=C(F)F QHSJIZLJUFMIFP-UHFFFAOYSA-N 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Images
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
Definitions
- the present invention relates to an electrical heating line or an electrical Heating tape with insulating coatings arranged in the layer structure Polytetrafluoroethylene.
- heating cables in a coaxial arrangement known for example also for Heating aggressive media are heating cables in a coaxial arrangement known (DE-A 28 50 722), in which the heating conductor of a fluoropolymer as Insulating material is enclosed.
- This insulation is covered by one Copper wire braid, using the individual wires to avoid corrosion are additionally nickel-plated.
- This network of copper wires is the electrical one Protective conductor of the line used to avoid accident hazards, for example also due to a short circuit in the electrically conductive part, within the line is provided.
- the protective conductor is covered by an external one Plastic sheath, which is used to protect against aggressive media in the environment, e.g. out is made of a fluoropolymer.
- Advantage of such a coaxial Arrangement is in addition to the wide range of use of this line due to resistant to high temperatures and insensitive to aggressive media Materials that such lines in practically any lengths with high Flexibility can be produced.
- Heating cable with a coaxial layer structure is already known (DE-ES 101 07 429).
- both sides these two layers are air-impermeable layers of one extrudable fluoropolymer provided so that there is a between them Can form air cushions.
- Layer construction that increases cable diameter leads to the deliberately created Air cushions in the interior of the cable significantly impair the Heat conduction away from the heating conductor to the cable surface and thus to one Deterioration of the efficiency of the heating cable itself.
- the invention takes a different path to protect the layer structure of a heating cable or heating tape existing coverings (conductor insulation, intermediate sheath, outer protective sheath ) made of polytetrafluoroethylene. even with the greatest mechanical force Impact or crushing stress.
- At least one of the polytetrafluoroethylene coatings is by at least one adjacent insulating layer from a melt processable fluoropolymer shockproof.
- the invention is based on the Recognition that adequate protection against external mechanical Strains can be achieved through the juxtaposition of Polymer layers from the same polymer family, but different Polymer structure. So according to the proposal of the invention is the polytetrafluoroethylene with its fibrous, so-called fibril-containing, polymer structure through the neighboring thermoplastic polymer protected with its amorphous structure. This results from the fact that in contrast with impact or impact loads to the fiber structure the amorphous polymer structure has a shock absorbing effect.
- An advantageous embodiment of the invention results in an electrical heating line in a coaxial arrangement with a central conductor, an insulation made of polytetrafluoroethylene and a protective conductor in the form of stranded or braided wires and an outer protective sheath when the polytetrafluoroethylene insulation has one or more layers. is shockproof by at least one adjacent insulating layer made of a fluoropolymer that can be processed from the melt.
- a particularly advantageous embodiment of a heating line in a coaxial arrangement results according to the invention when the shock-absorbing insulating layer made of a melt-processable fluoropolymer is arranged below the polytetrafluoroethylene insulation surrounding the conductor, and thus directly on the conductor itself.
- the heating cable according to the invention has no air cushions in the layer structure, the heating heat generated by the conductor thus reaches the cable / line surface without significant heat build-up, ie where it is also needed.
- the construction of the line is problem-free in terms of production technology; the extruded polymer protective layers allow the line diameter to be kept small.
- the polytetrafluoroethylene insulation is a heat treatment is subjected to for the purpose of sintering the polymer material the resulting shrinkage of the polytetrafluoroethylene compacting of the layer structure.
- the line is therefore, in contrast to the known Heating cable with air cushion, also longitudinally watertight, while known Glass fiber mesh, mica tapes or inorganic foils are another have unwanted wicking and therefore for an ideal Ensure moisture transport.
- heating tapes of the most varied of embodiments are also used. If such a heating tape consists, for example, of parallel feed wires and a heating coil contacting the conductors of these feed wires at intervals and an intermediate jacket and / or an outer jacket made of polytetrafluoroethylene, then at least one jacket layer can be processed from the melt by at least one adjacent insulating layer in the implementation of the invention Shockproof fluoropolymer.
- a heating tape with parallel, non-insulated feed conductors and a heating wire guided parallel to these and contacted with the feed conductors at intervals and a common covering made of polytetrafluoroethylene the covering is shock-protected according to the invention by at least one adjacent insulating layer made of a fluoropolymer that can be processed from the melt .
- Self-limiting heating tapes have proven to be advantageous for special applications, for example in explosion protection.
- These heating tapes with parallel, non-insulated feeders and a semiconducting sheath enclosing them, as well as common insulation and / or an outer protective jacket made of polytetrafluoroethylene are in turn the common insulation and / or Protective sheath with shock protection according to the proposal of the invention.
- the purpose of the longitudinal water-tightness and compactness of the heating lines or heating tapes according to the invention also serves to weld or glue the shock-absorbing insulating layers to the polytetrafluoroethylene sheathings. At the same time, the bending fatigue strength of such arrangements is significantly increased.
- the thickness of the shock absorbing layer is 0.1 to 0.8 mm, preferably 0.2 to 0.5 mm. In the case of heating cables in a coaxial arrangement and the shock-absorbing insulating layer located directly on the conductor, the thickness to be selected essentially depends on the respective conductor diameter. For example, the shock absorbing layer with a conductor diameter of 1.5 mm is 0.2 mm.
- the invention also offers particular advantages when the conductor insulation is made a polytetrafluoroethylene tape wrapped with overlap of the edges exists, for example with a rectangular cross section.
- the liability of adjoining layers is improved, the further gained thereby Compactness ensures high stability of the cable against kinking and bending.
- the shock absorbing layer according to the invention consists of one of the Melt processable fluoropolymer. Since it is in a generic Heating line or a heating tape from their task to a high Permanent temperature resistance, possibly also under the influence of aggressive Media that arrives can advantageously be made from a shock absorbing layer Prepare tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (TFA / PFA). But also the tetrafluoroethylene / hexafluoropropylene copolymer (FEP) or the Polytetrafluoroethylene-perfluoromethyl vinyl ether copolymer, also known as the trade name HYFLON MFA, depending on the application, are advantageous Polymers for carrying out the invention.
- TFA / PFA tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer
- FEP tetrafluoroethylene / hexafluoropropylene copolymer
- PVDF polyvinylidene fluoride
- ETFE ethylene tetrafluoroethylene
- a particularly advantageous embodiment of the invention results in a Polytetrafluoroethylene - wrapping from a wound polytetrafluoroethylene - Band if this has a plano-convex cross-sectional shape. Across from The plano-convex leads common belts with a rectangular cross-sectional shape Form after winding and sintering the polytetrafluoroethylene tape into one compact casing with closed smooth outer surface. This is from particularly advantageous when the outer surface of the aggressive media Environment is exposed.
- Another beneficial way of improving insulation quality opposite to that of rectangular ribbons is that of the ribbon Form polytetrafluoroethylene in cross section as a flat profile, with from the center edge areas tapering to both sides and on the edges regular band course.
- PTFE strip material
- the edges of the tape are advantageous Polytetrafluoroethylene broadly drawn, the edge width on both sides of the Band thickness determining middle range at least 45%, preferably 50 to 80% of the total width of the tape.
- the thickness of the tape advantageously used according to the invention Polytetrafluoroethylene is 20 to 200 microns, preferably 40 to 160 microns.
- the strip thickness decreases to 5 ⁇ m and less towards the edges. Doing so the bandwidth is expediently 5 to 50 mm, preferably 10 to 30 mm.
- the outer protective jacket made of a wound Band consists of polytetrafluoroethylene.
- Polytetrafluorethylene is a shock absorbing insulating layer made from a To arrange melt processable fluoropolymer.
- Another beneficial one Embodiment of the invention would be the one or both sides of the protective conductor a shock-absorbing insulating layer made of a melt-processable To allow fluoropolymer to border, the protective conductor with these insulating layers include.
- the invention is based on that shown in FIGS. 1 and 2 as particularly advantageous Embodiments of electrical heating cables in a coaxial arrangement closer explained.
- the conductor is made 1, as shown in Figure 1, for example from a number of individual Resistance wires.
- the conductor insulation is labeled 2, it consists of a high temperature resistant polytetrafluoroethylene, the name "Polytetrafluoroethylene", as also above, such tetrafluoroethylene polymers includes that are provided with modifying additives, but in one Quantity that the polymer, like the PTFE itself, does not melt is processable.
- the one used is Polytetrafluoroethylene from an initially unsintered strip or foil material, the wound in the unsintered state on the heating conductor, preferably with Overlap, for example up to 50%, and in the wound state an appropriate temperature treatment is sintered.
- the individual band layers are fused or welded into compact insulation.
- the protective conductor 3 consists of individual metallic wires, for example nickel-plated copper wires that are roped on the insulation 2 or for achieving as far as possible over the circumference are.
- the heating line is closed by the jacket 4, the Appropriate, since such lines are also in the area of influence of aggressive media be used, for example in the chemical industry, from a corresponding suitable plastic material is made.
- sheath materials have Fluoropolymers have also been found to be advantageous in extruded form be applied, or in that a winding from initially unsintered and wound sintered PTFE tapes forms the outer end of the heating cable.
- This Layer of an extrudable fluoropolymer amorphous according to the invention dampens the impact energy applied from the outside and thus prevents one Cable damage or destruction.
- FIG. 2 shows a particularly advantageous embodiment of the invention
- Heating line again in a coaxial version, consists of the heating conductor 6, for example, from a large number of individual strands that are stranded or intertwined Resistance wires.
- the conductor insulation is designated 7, it consists in present embodiment of one or more layers of a tape made of polytetrafluoroethylene (PTFE).
- PTFE polytetrafluoroethylene
- the shock absorbing layer 8 from a melt processable fluoropolymer.
- This layer covers conductor 6 directly, because of the smaller in relation to the diameter of the line Conductor diameter, the wall thickness of the layer 8 can be kept extremely thin become.
- the heating line according to the invention therefore fulfills all Safety requirements, especially those for explosion protection.
- this heating line according to the invention is inexpensive to manufacture, in some cases partly because of the simplified work steps compared to the prior art because of the smaller amounts of material, the same polymer family are to be assigned.
- the outer jacket 10 also consists of a in this embodiment Winding from PTFE tapes, in the wound state Subjected to temperature treatment and thus to a compact coating welded or fused.
- the special provided according to the invention Cross-sectional shape of the PTFE tape leads to a particularly smooth, in itself closed surface. Tearing open the individual layers of tape under impact or impact stress is a shock due to the solution according to the invention absorbent polymer layer from the same polymer family in the layer structure to arrange the heating cable avoided.
- the heating line according to the invention shown in Figure 2 is also characterized by particularly favorable external dimensions.
- the diameter of the conductor 6 is 1.4 mm
- the wall thickness of the shock-absorbing layer 8 is 0.2 mm
- the insulation 7 has a wall thickness of 0.6 mm
- the thickness of the braid 9 is 0, 4 mm
- the jacket 10 has a wall thickness of 0.5 mm.
- insulating layers made of PTFE and PFA can alternate in the layer structure of the heating cable, for example PTFE / PFA / PTFE or also PFA / PTFE / PFA.
- the prerequisite here is that these insulating layers each adjoin one another.
- the effect of the invention can also be achieved if different from the Embodiments known heating cables or heating lines, too in embodiments deviating from the coaxial construction, against impact and pressure loads are to be strengthened and the PTFE coatings used there according to the invention insulating layers from the melt adjacent processible fluoropolymers.
Landscapes
- Insulated Conductors (AREA)
- Resistance Heating (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Communication Cables (AREA)
Abstract
Description
Eine besonders vorteilhafte Ausführungform einer Heizleitung in koaxialer Anordnung ergibt sich nach der Erfindung dann, wenn unterhalb der den Leiter umschließenden Polytetrafluorethylen - Isolierung, und damit unmittelbar auf dem Leiter selbst, die Stoß absorbierende Isolierschicht aus einem aus der Schmelze verarbeitbaren Fluorpolymer angeordnet ist. Durch die Verwendung artverwandter Werkstoffe auch für den mechanischen Schutz ist gegenüber den bekannten Heizkabeln oder -leitungen die Dauertemperaturbeständigkeit, eine notwendige Eigenschaft für Heizleitungen, wesentlich erhöht. Die erfindungsgemäße Heizleitung weist keine Luftpolster im Schichtenaufbau auf, die vom Leiter erzeugte Heizwärme gelangt somit ohne wesentlichen Wärmestau zur Kabel- / Leitungsoberfläche, also dorthin, wo sie auch gebraucht wird. Der Leitungsaufbau ist fertigungstechnisch problemlos, durch die extrudierten polymeren Schutzschichten können die Leitungsdurchmesser klein gehalten werden.
Bei einer anderen Variante eines Heizbandes mit parallelen, unisolierten Speiseleitern und einem parallel zu diesen geführten und mit den Speiseleitern in Abständen kontaktierten Heizdraht sowie einer gemeinsamen Umhüllung aus Polytetrafluorethylen ist nach der Erfindung die Umhüllung durch mindestens eine angrenzende Isolierschicht aus einem aus der Schmelze verarbeitbaren Fluorpolymer stoßgesichert.
Für spezielle Anwendungen haben sich selbstbegrenzende Heizbänder als vorteilhaft erwiesen, beispielsweise im Explosionsschutz, Bei diesen Heizbändern mit parallelen, unisolierten Speiseleitern und einer diese umschließenden halbleitenden Umhüllung sowie einer gemeinsamen Isolierung und/oder einem äußeren Schutzmantel aus Polytetrafluorethylen sind wiederum die gemeinsame Isolierung und/oder der Schutzmantel nach dem Vorschlag der Erfindung stoßgesichert.
Die Dicke der Stoß absorbierenden Schicht beträgt 0,1 bis 0,8 mm, vorzugsweise 0,2 bis 0,5 mm. Die zu wählende Dicke hängt im Falle von Heizleitungen in koaxialer Anordnung und auf dem Leiter unmittelbar befindlicher Stoß absorbierender Isolierschicht im wesentlichen vom jeweiligen Leiterdurchmesser ab. So beträgt die Stoß absorbierende Schicht bei einem Leiterdurchmesser von 1,5 mm beispielsweise 0,2 mm.
Abweichend von der bevorzugten Ausführungsform nach der Fig. 2 sind auch andere Varianten möglich. So können sich Isolierschichten aus PTFE und PFA beispielsweise im Schichtenaufbau der Heizleitung abwechseln, etwa PTFE / PFA /PTFE oder auch PFA / PTFE / PFA, Voraussetzung dabei ist wie in den Ausführungsbeispielen, daß diese Isolierschichten jeweils aneinandergrenzen.
Claims (22)
- Elektrische Heizleitung oder elektrisches Heizband mit im Schichtenaufbau angeordneten isolierenden Umhüllungen aus Polytetrafluorethylen, dadurch gekennzeichnet, daß mindestens eine der Polytetrafluorethylen - Umhüllungen durch mindestens eine angrenzende Isolierschicht aus einem aus der Schmelze verarbeitbaren Fluorpolymer stoßgesichert ist.
- Elektrische Heizleitung nach Anspruch 1 in koaxialer Anordnung mit einem zentralen Leiter, einer Isolierung aus Polytetrafluorethylen und einem Schutzleiter in Form aufgeseilter oder -geflochtener metallischer Drähte sowie einem äußeren Schutzmantel, dadurch gekennzeichnet, daß die Polytetrafluorethylen - Isolierung, ein- oder mehrschichtig, durch mindestens eine angrenzende Isolierschicht aus einem aus der Schmelze verarbeitbaren Fluorpolymer stoßgesichert ist.
- Elektrische Heizleitung nach Anspruch 2 in koaxialer Anordnung mit einer den zentralen Leiter umschließenden einschichtigen Isolierung aus Polytetrafluorethylen und einem diese überdeckenden Schutzleiter sowie einem äußeren Schutzmantel, dadurch gekennzeichnet, daß unterhalb der Polytetrafluorethylen - Isolierung, und damit unmittelbar auf dem Leiter, eine Stoß absorbierende Isolierschicht aus einem aus der Schmelze verarbeitbaren Fluorpolymer angeordnet ist.
- Elektrisches Heizband nach Anspruch 1 mit parallelen, aus isolierten elektrischen Leitern bestehenden Speiseadern und einer die Leiter dieser Speiseadern in Abständen kontaktierenden Heizwendel sowie einem Zwischenmantel und/oder einem Außenmantel aus Polytetrafluorethylen, dadurch gekennzeichnet, daß mindestens eine Mantelschicht durch mindestens eine angrenzende Isolierschicht aus einem aus der Schmelze verarbeitbaren Fluorpolymer stoßgesichert ist.
- Elektrisches Heizband nach Anspruch 1 mit parallelen, unisolierten Speiseleitern und einem parallel zu diesen geführten und mit den Speiseleitern in Abständen kontaktierten Heizdraht sowie einer gemeinsamen Umhüllung aus einem Polytetrafluorethylen, dadurch gekennzeichnet, daß die Umhüllung durch mindestens eine angrenzende Isolierschicht aus einem aus der Schmelze verarbeitbaren Fluorpolymer stoßgesichert ist.
- Elektrisches Heizband nach Anspruch 1 mit parallelen, unisolierten Speiseleitern und einer diese umschließenden halbleitenden Umhüllung sowie einer gemeinsamen Isolierung und/oder einem äußeren Schutzmantel aus Polytetrafluorethylen, dadurch gekennzeichnet, daß die gemeinsame Isolierung und/oder der Schutzmantel durch mindestens eine angrenzende Isolierschicht aus einem aus der Schmelze verarbeitbaren Fluorpolymer stoßgesichert ist.
- Heizleitung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Dicke der Stoß absorbierenden Isolierschicht 0,1 bis 0,8 mm, vorzugsweise 0,2 bis 0,5 mm, in Abhängigkeit vom jeweiligen Leiterdurchmesser, beträgt.
- Heizleitung oder Heizband nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß die Stoß absorbierende Isolierschicht mit der Polytetrafluorethylen - Umhüllung (Isolierung, Mantel) verschweißt oder verklebt ist.
- Heizleitung oder Heizband nach Anspruch 1 oder einem der folgenden mit einer Umhüllung aus einem mit Überlappung der Kanten gewickelten Polytetrafluorethylen - Band, dadurch gekennzeichnet, daß die durch die Wicklung des Bandes gebildeten Zwickel mit dem Fluorpolymer der Stoß absorbierenden Isolierschicht ausgefüllt sind.
- Heizleitung oder Heizband nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß die Stoß absorbierende Isolierschicht aus einem Tetrafluorethylen - Perfluoralkylvinylether - Copolymerisat (TFA/PFA) besteht.
- Heizleitung oder Heizband nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß die Stoß absorbierende Isolierschicht aus einem Tetrafluorethylen / Hexafluorpropylen - Copolymer (FEP) besteht.
- Heizleitung oder Heizband nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß die Stoß absorbierende Isolierschicht aus einem Polytetrafluorethylen - Perfluormethylvinylether (MFA) besteht.
- Heizleitung oder Heizband nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß das Polytetrafluorethylen der Umhüllung gesintert ist.
- Heizleitung oder Heizband nach Anspruch 9, dadurch gekennzeichnet, daß das Band aus Polytetrafluorethylen eine rechteckförmige Querschnittsform aufweist.
- Heizleitung oder Heizband nach Anspruch 9, dadurch gekennzeichnet, daß das Band aus Polytetrafluorethylen eine plankonvexe Querschnittsform aufweist.
- Heizleitung oder Heizband nach Anspruch 9, dadurch gekennzeichnet, daß das Band aus Polytetrafluorethylen im Querschnitt als Flachprofil ausgebildet ist, mit von der Mitte nach beiden Seiten spitz zulaufenden Randbereichen und an den Kanten regelmäßigem Bandverlauf.
- Heizleitung oder Heizband nach Anspruch 16, dadurch gekennzeichnet, daß die Ränder des Bandes aus Polytetrafluorethylen breit gezogen sind, wobei die Randbreite beidseitig des die Banddicke bestimmenden mittleren Bereiches mindestens 45 %, vorzugsweise 50 bis 80 %, der gesamten Breite des Bandes beträgt.
- Heizleitung oder Heizband nach Anspruch 15 oder einem der folgenden, dadurch gekennzeichnet, daß die Dicke des Bandes aus Polytetrafluorethylen 20 bis 200 µm, vorzugsweise 40 bis 160 µm, beträgt, die zu den Kanten ( Rand ) hin auf 5 µm und weniger abnimmt.
- Heizleitung oder Heizband nach Anspruch 18, dadurch gekennzeichnet, daß die Breite des Bandes aus Polytetrafluorethylen 5 bis 50 mm, vorzugsweise 10 bis 30 mm, aufweist.
- Heizleitung oder Heizband nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß der äußere Schutzmantel aus einem gewickelten Band aus Polytetrafluorethylen besteht.
- Heizleitung oder Heizband nach Anspruch 20, dadurch gekennzeichnet, daß unterhalb der Wickellage(n) aus Polytetrafluorethylen eine Stoß absorbierende Isolierschicht aus einem aus der Schmelze verarbeitbaren Fluorpolymer angeordnet ist.
- Heizleitung oder Heizband nach Anspruch 2 oder einem der folgenden, dadurch gekennzeichnet, daß ein- oder beidseitig an den Schutzleiter eine Stoß absorbierenden Isolierschicht aus einem aus der Schmelze verarbeitbaren Fluorpolymer angrenzt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10325517 | 2003-06-05 | ||
DE10325517A DE10325517A1 (de) | 2003-06-05 | 2003-06-05 | Elektrische Heizleitung oder Heizband |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1484945A1 true EP1484945A1 (de) | 2004-12-08 |
EP1484945B1 EP1484945B1 (de) | 2006-04-26 |
Family
ID=33154563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04010990A Expired - Lifetime EP1484945B1 (de) | 2003-06-05 | 2004-05-08 | Elektrische Heizleitung oder Heizband |
Country Status (7)
Country | Link |
---|---|
US (1) | US7220916B2 (de) |
EP (1) | EP1484945B1 (de) |
AT (1) | ATE324765T1 (de) |
CA (1) | CA2469775A1 (de) |
DE (2) | DE10325517A1 (de) |
NO (1) | NO20042302L (de) |
RU (1) | RU2342807C2 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007147271A1 (de) * | 2006-06-19 | 2007-12-27 | Huber+Suhner Ag | Hochfrequenzbauteil sowie ein verfahren zum herstellen eines solchen bauteils |
FR3028592A1 (fr) * | 2014-11-18 | 2016-05-20 | Itp Sa | Conduit de transport d'un fluide chauffe electriquement |
US9464747B2 (en) | 2011-05-20 | 2016-10-11 | Norma Germany Gmbh | Connector for a heatable fluid line and heatable fluid line |
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- 2004-05-08 EP EP04010990A patent/EP1484945B1/de not_active Expired - Lifetime
- 2004-05-08 AT AT04010990T patent/ATE324765T1/de not_active IP Right Cessation
- 2004-06-03 US US10/859,174 patent/US7220916B2/en not_active Expired - Fee Related
- 2004-06-04 CA CA002469775A patent/CA2469775A1/en not_active Abandoned
- 2004-06-04 NO NO20042302A patent/NO20042302L/no not_active Application Discontinuation
- 2004-10-22 RU RU2004130929/09A patent/RU2342807C2/ru not_active IP Right Cessation
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WO2007147271A1 (de) * | 2006-06-19 | 2007-12-27 | Huber+Suhner Ag | Hochfrequenzbauteil sowie ein verfahren zum herstellen eines solchen bauteils |
US9464747B2 (en) | 2011-05-20 | 2016-10-11 | Norma Germany Gmbh | Connector for a heatable fluid line and heatable fluid line |
US9506595B2 (en) | 2011-05-20 | 2016-11-29 | Norma Germany Gmbh | Fluid line |
US9671053B2 (en) | 2011-05-20 | 2017-06-06 | Norma Germany Gmbh | Fluid line |
FR3028592A1 (fr) * | 2014-11-18 | 2016-05-20 | Itp Sa | Conduit de transport d'un fluide chauffe electriquement |
Also Published As
Publication number | Publication date |
---|---|
US20050016757A1 (en) | 2005-01-27 |
CA2469775A1 (en) | 2004-12-05 |
DE10325517A1 (de) | 2004-12-23 |
DE502004000457D1 (de) | 2006-06-01 |
EP1484945B1 (de) | 2006-04-26 |
RU2004130929A (ru) | 2006-04-10 |
ATE324765T1 (de) | 2006-05-15 |
RU2342807C2 (ru) | 2008-12-27 |
US7220916B2 (en) | 2007-05-22 |
NO20042302L (no) | 2004-12-06 |
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