EP0541047A2 - Electric surface heating element and process for its manufacture - Google Patents

Electric surface heating element and process for its manufacture Download PDF

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Publication number
EP0541047A2
EP0541047A2 EP92118825A EP92118825A EP0541047A2 EP 0541047 A2 EP0541047 A2 EP 0541047A2 EP 92118825 A EP92118825 A EP 92118825A EP 92118825 A EP92118825 A EP 92118825A EP 0541047 A2 EP0541047 A2 EP 0541047A2
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EP
European Patent Office
Prior art keywords
conductor
heating
weft
heating element
surface 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.)
Withdrawn
Application number
EP92118825A
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German (de)
French (fr)
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EP0541047A3 (en
Inventor
Jochen Michelmann
Josef Hilmer
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IG Bauerhin GmbH
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IG Bauerhin GmbH
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Filing date
Publication date
Application filed by IG Bauerhin GmbH filed Critical IG Bauerhin GmbH
Publication of EP0541047A2 publication Critical patent/EP0541047A2/en
Publication of EP0541047A3 publication Critical patent/EP0541047A3/en
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/16—Physical properties antistatic; conductive
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/014—Heaters using resistive wires or cables not provided for in H05B3/54
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/029—Heaters specially adapted for seat warmers

Definitions

  • the invention relates to a surface heating element, in particular for seat heaters in the motor vehicle sector, consisting of heating wires arranged essentially in parallel, which are connected at their ends and / or deflection points to power supply conductors and which are embedded in a textile base material, and a method for their production.
  • a surface heating element of the type mentioned is known from DE-OS 29 48 047. It is a fabric with warp threads made of insulating material and weft threads made of electrically conductive wire, which together form a resistance or heating grid.
  • the weft threads are made from individual deflected wires, the ends of which are connected to one another in a parallel connection.
  • the parallel connection takes place via fixed connection elements such as cable lugs, welded sheet metal brackets or the like, so that the resistance or heating grid described is limited in its area of application to rigid or semi-rigid elements.
  • the object of the present invention is to enable a uniform heating of the entire heating element surface with a simultaneous increase in flexibility in a surface heating element of the type mentioned at the beginning.
  • a flexible and at the same time dimensionally stable surface heating element can be produced by the combination of a knitted textile base material with a sinusoidally inserted heating conductor as a weft thread in the mesh threads.
  • the knitting process used enables fringe-weft binding as well as continuous production using production machines with high economic efficiency.
  • a metallic heating wire is inserted in the partial weft process in the mesh of a textile knitted fabric, the heating conductor being guided over a separate sine-shaped laying rail with a larger or smaller amplitude, as required.
  • the surface heating element consists of a multiplicity of mesh threads 2 running in parallel, in which a heating conductor 1 is inserted sinusoidally. In the area of the power supply conductor 3, the heating conductor 1 runs parallel over a distance S, then crosses the previously adjacent power supply conductor 3 and then again runs parallel to the starting point, etc.
  • the contact area is reinforced by increased mesh formation. This can be achieved both by meshes of textile material and by meshes of metallic material, in the latter case a metal wire mesh is created in the contact zone.
  • Building yarns have proven to be suitable for particularly flexible surface heating elements.
  • Metal wires made of steel and aluminum or metallic filament yarns have been successfully tested as material for the heating conductor.
  • the power supply conductors 3 are arranged as a contact strip 4 on the opposite repeat edges 5 at right angles to the sine axis and each heating conductor 1 is electrically connected to each contact conductor.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Surface Heating Bodies (AREA)

Abstract

In the case of a surface-heating element, consisting of heating wires which are arranged essentially parallel, are electrically connected at their ends and/or bend points to power-supply conductors and are embedded in a textile base material, it is intended to make possible uniform heating of the entire heating-up element surface, while at the same time increasing the flexibility. This is achieved in that the heating conductors (1) run in a sinusoidal shape over gauze threads (2) of a knitted base material, as weft threads, and are bonded into the gauze of the textile base material at least at the maxima of the amplitudes, the power-supply conductors (3) being arranged as a contact strip (4) on the mutually opposite periodic edges (5) at right angles to the axis of the sinusoid, and each heating conductor (1) being electrically conductively connected to each contact conductor. <IMAGE>

Description

Die Erfindung betrifft ein Flächenheizelement, insbesondere für Sitzheizungen im Kfz-Bereich, bestehend aus im wesentlichen parallel angeordneten Heizdrähten, die an ihren Enden und/oder Umlenkstellen mit Stromzuführungsleitern verbunden sind und die in ein textiles Grundmaterial eingebettet sind sowie ein Verfahren zu seiner Herstellung.The invention relates to a surface heating element, in particular for seat heaters in the motor vehicle sector, consisting of heating wires arranged essentially in parallel, which are connected at their ends and / or deflection points to power supply conductors and which are embedded in a textile base material, and a method for their production.

Ein Flächenheizelement der eingangs genannten Art ist aus der DE-OS 29 48 047 bekannt. Dabei handelt es sich um ein Gewebe mit Kettfäden aus Isoliermaterial und Schußfäden aus elektrisch leitendem Draht, die zusammen eine Widerstands- oder Heizgitter bilden. Die Schußfäden sind aus einzelnen abgelenkten Drähten hergestellt, deren Enden miteinander zu einer Parallelschaltung verbunden sind. Die Parallelschaltung erfolgt über feste Anschlußelemente wie Kabelschuhe, angeschweißte Blechlaschen oder dgl, so daß das beschriebene Widerstands- oder Heizgitter in seinem Anwendungsbereich auf starre bzw. halbstarre Elemente beschränkt ist.A surface heating element of the type mentioned is known from DE-OS 29 48 047. It is a fabric with warp threads made of insulating material and weft threads made of electrically conductive wire, which together form a resistance or heating grid. The weft threads are made from individual deflected wires, the ends of which are connected to one another in a parallel connection. The parallel connection takes place via fixed connection elements such as cable lugs, welded sheet metal brackets or the like, so that the resistance or heating grid described is limited in its area of application to rigid or semi-rigid elements.

Aufgabe der vorliegenden Erfindung ist es bei einem Flächenheizelement der eingangs genannten Art eine gleichmäßige Erhitzung der gesamten Heizelementfläche bei gleichzeitiger Erhöhung der Flexibilität zu ermöglichen.The object of the present invention is to enable a uniform heating of the entire heating element surface with a simultaneous increase in flexibility in a surface heating element of the type mentioned at the beginning.

Darüberhinaus soll ein Verfahren zur kontinuierlichen Fertigung von Flächenheizelementen insbesondere von PKW-Sitzbezügen entwickelt werden, das einen Zuschnitt von der Rolle ermöglicht.In addition, a process for the continuous production of surface heating elements, in particular car seat covers, is to be developed, which enables cutting from the roll.

Diese Aufgabe wird durch die in den Patentansprüchen angegebenen Merkmale gelöst.This object is achieved by the features specified in the patent claims.

Es hat sich gezeigt, daß durch die Kombination eines gewirkten textilen Grundmaterials mit einem sinusförmig als Schußfaden in die Maschenfäden eingelegten Heizleiters ein flexibles und gleichzeitig formstabiles Flächenheizelement erzeugt werden kann.It has been found that a flexible and at the same time dimensionally stable surface heating element can be produced by the combination of a knitted textile base material with a sinusoidally inserted heating conductor as a weft thread in the mesh threads.

Das dabei eingesetzte Wirkverfahren ermöglicht eine Franse-Schuß-Bindung sowie eine kontinuierliche Fertigung durch Produktionsmaschinen mit hoher Wirtschaftlichkeit. Dabei wird ein metallischer Heizdraht im Teilschußverfahren in die Maschen eines textilen Gewirkes eingelegt, wobei der Heizleiter über eine gesonderte Legeschiene in Sinusform mit größerer oder kleinerer Amplitude, je nach Bedarf, geführt wird.The knitting process used enables fringe-weft binding as well as continuous production using production machines with high economic efficiency. Here, a metallic heating wire is inserted in the partial weft process in the mesh of a textile knitted fabric, the heating conductor being guided over a separate sine-shaped laying rail with a larger or smaller amplitude, as required.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispieles näher erläutert.

Fig. 1 zeigt
einen Ausschnitt aus dem erfindungsgemäßen Flächenheizelement in Draufsicht.
The invention is explained in more detail below using an exemplary embodiment.
Fig. 1 shows
a section of the surface heating element according to the invention in plan view.

Das Flächenheizelement besteht aus einer Vielzahl parallel laufender Maschenfäden 2, in die ein Heizleiter 1 sinusförmig eingelegt ist. Im Bereich der Stromzuführungsleiter 3 verläuft der Heizleiter 1 über eine Wegstrecke S parallel, kreuzt dann den bisher benachbarten Stromzuführungsleiter 3 und verläuft dann wiederum parallel zu dem Ausgangspunkt usw.The surface heating element consists of a multiplicity of mesh threads 2 running in parallel, in which a heating conductor 1 is inserted sinusoidally. In the area of the power supply conductor 3, the heating conductor 1 runs parallel over a distance S, then crosses the previously adjacent power supply conductor 3 and then again runs parallel to the starting point, etc.

Durch diese Parallelführung im Bereich der Wegstrecke S wird eine lange Kontaktzone zwischen dem Heizleiter 1 und dem Stromzuführungsleiter 3 geschaffen, wobei die eigentliche Bindung zwischen beiden durch die darumgelegten Maschen erfolgt.This parallel guidance in the area of the path S creates a long contact zone between the heating conductor 1 and the power supply conductor 3, the actual binding between the two taking place through the meshes laid around it.

In einer bevorzugten Ausführungsform der Erfindung wird der Kontaktbereich durch eine vermehrte Maschenbildung verstärkt. Dies kann sowohl durch Maschen aus Textilmaterial als auch durch Maschen aus metallischem Werkstoff erzielt werden, wobei im letzteren Fall ein Metalldrahtgeflecht in der Kontaktzone entsteht.In a preferred embodiment of the invention, the contact area is reinforced by increased mesh formation. This can be achieved both by meshes of textile material and by meshes of metallic material, in the latter case a metal wire mesh is created in the contact zone.

Durch das erfindungsgemäße Verfahren des Einwirkens eines Heizleiters in ein textiles Grundgewirke sich die bisherigen Probleme bei der Herstellung von Flächenheizelementen erfolgreich lösen. Die Elastizität des Elementes läßt sich durch die Wahl des geeigneten Garnes und der Anzahl der Maschen bzw. der Maschenweite innerhalb weiter Grenzen erreichen.By the method according to the invention of the action of a heating conductor in a basic textile fabric, the previous problems in the manufacture of surface heating elements are successfully solved. The elasticity of the element can be achieved within wide limits by the choice of a suitable yarn and the number of stitches or the mesh size.

Für besonders dehnfähige Flächenheizelemente haben sich Hochbauschgarne als geeignet erwiesen. Als Material für den Heizleiter sind Metlldrähte aus Stahl und Aluminium oder metallische Filamentgarne erfolgreich erprobt worden.Building yarns have proven to be suitable for particularly flexible surface heating elements. Metal wires made of steel and aluminum or metallic filament yarns have been successfully tested as material for the heating conductor.

Bei Flächenheizelementen mit besonders hoher Zugbeanspruchung in Faserrichtung hat sich die Verwendung von Kohlenstoffasern bewährt. Sie bieten gleichzeitig den Vorteil einer guten Korrosionsfestigkeit und einer leichteren Verarbeitbarkeit. Denn durch ihre im Vergleich zu Stahlfasern geringere Zähigkeit stellen sich die Schlaufen beim Einlegen in das Gewirke des textilen Grundmaterials nicht auf, so daß der Verarbeitungsvorgang ungehindert mit hoher Geschwindigkeit des Schußdrahtes erfolgt.The use of carbon fibers has proven itself for surface heating elements with particularly high tensile stress in the fiber direction. At the same time, they offer the advantage of good corrosion resistance and easier processing. Because of their lower tenacity compared to steel fibers, the loops do not stand up when inserted into the knitted fabric of the basic textile material, so that the processing operation takes place unhindered at high speed of the weft wire.

Wie aus Figur 1 ersichtlich, sind die Stromzuführungsleiter 3 als Kontaktleiste 4 an den sich gegenüberliegenden Rapportkanten 5 rechtwinklig zur Sinusachse angeordnet und jeder Heizleiter 1 mit jedem Kontaktleiter elektrisch verbunden.As can be seen from FIG. 1, the power supply conductors 3 are arranged as a contact strip 4 on the opposite repeat edges 5 at right angles to the sine axis and each heating conductor 1 is electrically connected to each contact conductor.

Claims (15)

Flächenheizelement, insbesondere für Sitzheizungen im Kfz-Bereich, bestehend aus im wesentlichen parallel angeordneten Heizdrähten, die an ihren Enden und/oder Umlenkstellen mit Stromzuführungsleitern elektrisch verbunden sind und die in ein textiles Grundmaterial eingebettet sind, dadurch gekennzeichnet,
daß die Heizleiter (1) als Schußfaden sinusförmig über Maschenfäden (2) eines gewirkten Grundmaterials verlaufen und zumindest an den Maxima der Amplituden in die Maschen des textilen Grundmaterials eingebunden sind, wobei die Stromzuführungsleiter (3) als Kontaktleiste (4) an den sich gegenüberliegenden Rapportkanten (5) rechtwinklig zur Sinusachse angeordnet sind und jeder Heizleiter (1) mit jedem Kontaktleiter elektrisch leitend verbunden ist.Surface heating element, in particular for seat heaters in the motor vehicle sector, consisting of essentially parallel heating wires which are electrically connected at their ends and / or deflection points to current supply conductors and which are embedded in a textile base material, characterized in that
that the heating conductors (1) run as a weft sinusoidal over mesh threads (2) of a knitted base material and are integrated into the meshes of the textile base material at least at the maxima of the amplitudes, the power supply conductors (3) acting as a contact strip (4) on the opposite repeat edges (5) are arranged at right angles to the sine axis and each heating conductor (1) is electrically conductively connected to each contact conductor. Flächenheizelement nach Anspruch 1, dadurch gekennzeichnet,
daß jeder Heizleiter (1) mit einem Kontaktleiter formschlüssig verbunden ist.Surface heating element according to claim 1, characterized in
that each heating conductor (1) is positively connected to a contact conductor. Flächenheizelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß die Einbindung jedes Heizleiters (1) in die Maschenfäden (2) nach Art einer "Franse-Schuß-Bindung" vorliegt.Surface heating element according to one of the preceding claims, characterized in that
that the integration of each heating conductor (1) in the stitch threads (2) is in the manner of a "fringe weft weave". Flächenheizelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß der Heizleiter (1) am Kreuzpunkt mit den Stromzuführungsleiter (3) zunächst eine Wegstrecke "S" parallel zu den Stromzuführungsleitern (3) geführt ist und diese berührt.Surface heating element according to one of the preceding claims, characterized in that
that the heating conductor (1) at the intersection with the power supply conductor (3) is initially a distance "S" parallel to the power supply conductors (3) and touches them. Flächenheizelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß jeder Heizleiter (1) und jeder Kontaktleiter (3) auf der Wegstrecke "S" mindestens einmal in einer Masche des textilen Grundmaterials eingebunden wird.Surface heating element according to one of the preceding claims, characterized in that
that each heating conductor (1) and each contact conductor (3) is integrated at least once in a stitch of the basic textile material on the path "S". Flächenheizelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß die Einbindung von Heizleiter (1) und Kontaktleiter (3) über mindestens zwei Maschen des textilen Grundmaterials erfolgt.Surface heating element according to one of the preceding claims, characterized in that
that the heating conductor (1) and contact conductor (3) are integrated over at least two stitches of the basic textile material. Flächenheizelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß im Bereich der Kontaktleiste (4) das textile Grundmaterial durch vermehrte Maschenbildung verstärkt ist.Surface heating element according to one of the preceding claims, characterized in that
that in the area of the contact strip (4) the textile base material is reinforced by increased stitch formation. Flächenheizelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß im Bereich der Kontaktleiste (4) das textile Grundmaterial mit einem klebstoffhaltigen Material beschichtet oder durch eine zusätzliche Abdeckung verfestigt ist.Surface heating element according to one of the preceding claims, characterized in that
that in the area of the contact strip (4) the textile base material is coated with an adhesive-containing material or is solidified by an additional cover. Verfahren zur Herstellung eines Flächenheizelementes nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß beim Wirken des textilen Materials ein Heizleiter (1) im Teilschußverfahren in die Maschen aus einem isolierenden Material eingelegt wird.Method for producing a surface heating element according to one of the preceding claims, characterized in that
that when the textile material is knitted, a heating conductor (1) is inserted into the meshes of an insulating material using the partial weft method. Verfahren nach dem vorhergehenden Anspruch, dadurch gekennzeichnet,
daß beim Teilschußverfahrens der Heizleiter (1) in einer gesonderten Legeschiene als Schußdraht in die Maschen eines textilen Gewirkes gelegt wird, wobei der Maschenfaden aus einem isolierenden Kunststoffmaterial, wie z.B. Polyamid oder Polyäthylen, besteht.Method according to the preceding claim, characterized in that
that in the partial weft process, the heating conductor (1) is placed in a separate laying rail as a weft wire in the mesh of a textile knitted fabric, the mesh thread consisting of an insulating plastic material, such as polyamide or polyethylene. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß der Heizleiter (1) beim Teilschuß in mindestens fünf Maschen von parallel angeordneten Maschenfäden (2) eingelegt wird.Method according to one of the preceding claims, characterized in that
that the heating conductor (1) is inserted during the partial weft in at least five stitches of stitch threads (2) arranged in parallel. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß der Stromzuführungsleiter (3) im Vollschußverfahren oder Magazinschußverfahren in die Maschen eingelegt wird, wobei an den Kreuzungsstellen mit dem Heizleiter (1) beide Leiter parallel zueinander verlegt werden.Method according to one of the preceding claims, characterized in that
that the power supply conductor (3) is inserted into the mesh using the full weft method or magazine weft method, both conductors being laid parallel to one another at the points of intersection with the heating conductor (1). Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß im Bereich der Kontaktleiste (4) als Schußfaden metallische Fäden verwendet werden, die ein Metallgeflecht mit dem Stromzuführungsleiter (3) bilden.Method according to one of the preceding claims, characterized in that
that in the area of the contact strip (4) metallic threads are used as weft threads, which form a metal braid with the power supply conductor (3). Verfahren nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet,
daß als Schußfaden Kohlenstoffasern verwendet werden.Method according to one of claims 1 to 12,
characterized,
that carbon fibers are used as weft. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß als textiles Grundmaterial ein elastisches Garn verwendet wird.Method according to one of the preceding claims, characterized in that
that an elastic yarn is used as the basic textile material.
EP19920118825 1991-11-05 1992-11-03 Electric surface heating element and process for its manufacture Withdrawn EP0541047A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914136425 DE4136425C2 (en) 1991-11-05 1991-11-05 Surface heating element and method for its production
DE4136425 1991-11-05

Publications (2)

Publication Number Publication Date
EP0541047A2 true EP0541047A2 (en) 1993-05-12
EP0541047A3 EP0541047A3 (en) 1993-09-15

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DE (1) DE4136425C2 (en)

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DE10112405B4 (en) * 2000-03-27 2006-05-11 I.G. Bauerhin Gmbh panel heating
EP1337129A3 (en) * 2002-02-14 2007-05-23 I.G. Bauerhin GmbH Electrical heating element for heating seats and steering-wheels
DE102006018063B3 (en) * 2006-04-14 2007-08-09 I.G. Bauerhin Gmbh Elektrotechnische Fabrik Producing flat electric heating element, especially for automobile seats, from flexible textile support, electric contact leads and heating leads in mold with two pairs of jaws
EP2112860A3 (en) * 2008-03-31 2010-03-10 Nichias Corporation Tape heater and method for manufacturing the same
DE102010036313A1 (en) 2010-07-09 2012-01-12 Beurer Gmbh Flexible heat apparatus e.g. electric blanket, has flexible thread-like heating element comprising central carrier thread consisting of multiple fibers, where heating wires are rolled up helically on carrier thread
DE202014005999U1 (en) 2014-07-28 2015-01-29 I.G. Bauerhin Gmbh Electric surface heating element for heating motor vehicle seats

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DE4239068C2 (en) * 1992-11-20 1996-03-14 Peter Rickerl Spacer fabrics for padding
DE20007043U1 (en) * 2000-04-17 2000-08-31 TRW Automotive Safety Systems GmbH & Co. KG, 63743 Aschaffenburg Heating mat and heated vehicle steering wheel
DE20309877U1 (en) 2003-06-26 2003-10-30 TRW Automotive Safety Systems GmbH, 63743 Aschaffenburg Vehicle Security System
DE102004010213B4 (en) * 2004-03-02 2006-04-27 Viola, Claudia Flexible electric area heating unit comprises a plastic fiber carrier material which is provided with carbon fiber heater elements and metal conductor elements joined to one another by means of special knots
DE102004056737B4 (en) * 2004-11-24 2008-05-08 Kufner Textilwerke Gmbh Textile surface heating element and method for its production
DE102013226911A1 (en) 2013-12-20 2015-06-25 Benecke-Kaliko Ag Electrically heated surface element
EP3442309B2 (en) 2017-08-07 2024-05-15 Benecke-Kaliko AG Method for the production of an electrically conductive textile surface element
DK3794905T3 (en) 2018-05-17 2023-08-21 Jahn Thorsten HEATING TEXTILE, PROCEDURE FOR MANUFACTURING THE SAME AS WELL AS USING THE SAME
DE102019129749A1 (en) * 2019-11-05 2021-05-06 Audi Ag Upholstery element with a sliding base material for a vehicle seat, vehicle seat and motor vehicle with such a vehicle seat

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DE102015008523A1 (en) 2014-07-28 2016-01-28 I.G. Bauerhin Gmbh Electric surface heating element for heating motor vehicles
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Publication number Publication date
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DE4136425C2 (en) 2002-01-24
DE4136425A1 (en) 1993-05-06

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