EP1235047A2 - Pyrotechnic igniter and manufacturing process therefor - Google Patents

Pyrotechnic igniter and manufacturing process therefor Download PDF

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Publication number
EP1235047A2
EP1235047A2 EP02450034A EP02450034A EP1235047A2 EP 1235047 A2 EP1235047 A2 EP 1235047A2 EP 02450034 A EP02450034 A EP 02450034A EP 02450034 A EP02450034 A EP 02450034A EP 1235047 A2 EP1235047 A2 EP 1235047A2
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EP
European Patent Office
Prior art keywords
metal
pyrotechnic igniter
ignition bridge
pyrotechnic
resin
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EP02450034A
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German (de)
French (fr)
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EP1235047B1 (en
EP1235047A3 (en
Inventor
Kurt Dipl.-Ing. Dr. Aigner
Robert Dipl.-Ing. Dr. Hatzl
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Hirtenberger Automotive Safety GmbH
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Hirtenberger Automotive Safety GmbH
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Priority to AT02450034T priority Critical patent/ATE338257T1/en
Publication of EP1235047A2 publication Critical patent/EP1235047A2/en
Publication of EP1235047A3 publication Critical patent/EP1235047A3/en
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Publication of EP1235047B1 publication Critical patent/EP1235047B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F42B3/124—Bridge initiators characterised by the configuration or material of the bridge

Definitions

  • the present invention relates to a pyrotechnic Detonator with an ignition bridge on which a reactive layer is applied.
  • Such an igniter is known from EP 609605 A1. It is shown there in Fig. 4 an ignition bridge, on the pyrotechnic Material is printed or painted on. As a pyrotechnic Material is specifically called pencil phosphate.
  • the advantage of pyrotechnic material on the ignition bridge in that the energy output is greater than the absorbed one electrical power. With the help of this additional energy can be a distance between the ignition bridge and the primer be easily overcome.
  • This task is performed by a pyrotechnic detonator initially mentioned type solved according to the invention in that the reactive layer is essentially made of a flammable metal or from a metal that when alloyed with the metal the ignition bridge releases energy.
  • the ignition bridge can be built according to AT 405591 B. his. According to the invention, it is therefore a metal and not an organic one Connection applied to the ignition bridge, causing results in a higher mechanical stability. It is possible that the metal reacts with and on oxygen Wise releases energy. But it is also possible that Metal reacts with the metal of the ignition bridge: becomes the ignition bridge heated, this metal melts and forms an alloy to the metal of the ignition bridge; with a suitable choice considerable energy is also released from metals.
  • the reactive layer is preferably in the form of a line or in Form of islands applied. This results in procedural and cost advantages; in principle, however, it is it is also possible to apply the layer over a large area. Zünd Portugaln are trimmed with a laser, that is, their Width is reduced, so the electrical resistance takes exactly the given value. Is the reactive layer applied as a line or in the form of islands, so you can trim in an area that is free of the reactive layer is what makes trimming easier.
  • the electrically insulating layer must of course be sufficient be thin so that the thermal resistance is sufficiently small remains.
  • the flammable metal is zirconium.
  • the ignition-enhancing effect is based on the fact that the metallic Zirconium when the ignition temperature is exceeded burns through the ignition bridge with considerable energy output.
  • zirconium titanium, hafnium, niobium, tantalum, Aluminum or nickel can be used.
  • the metal of the ignition bridge essentially made of gold and / or palladium and the flammable Metal made of nickel, possibly with an ignition amplifier.
  • the deposition of a nickel layer on the Au (Pd) base metal is electrochemically inexpensive to carry out in multiple uses, Electroless processes are also available.
  • Dispersion electrolysis can use any metal powder in this Fall ignition-enhancing metals such as Zr, Hf, Ta, Nb, with to be built in.
  • the grain size is preferably approximately 1 ⁇ m.
  • the Au / Ni-based layered composite is that the two metals are practically immiscible up to approx. 200 ° are ensured, which ensures a long service life of the system is.
  • a pyrotechnic detonator with a Laminate glow bridge / combustible metal is according to the invention provided that first the one containing the corresponding metal Resin is printed on the base metal that one let the resin dry and then sinter the metal and with it creates a layered composite.
  • the metal applied can metallic or also as a metal compound (e.g. resinate in the resin).
  • the printing can be done using screen printing done inexpensively. By choosing the right atmosphere during sintering it is possible to make a layer of the oxide or to produce nitride of the combustible metal, as used for electrical insulation is required. Then the ignition-reinforcing layer applied. Due to the used Technology (screen printing and sintering) is thermal Contact between the ignition bridge and the flammable metal given in any case.
  • the metal of the ignition bridge is essentially made of platinum or Platinum metals and the reactive metal essentially Aluminum.
  • the ignition bridge is a metal that matches the Alloy metal of the ignition bridge with high energy output, applied.
  • the ignition bridge consists of the precious metal. This is necessary because of the long lifespan (15 years and more).
  • the base metal can be provided above or below his.
  • the following two methods are preferred: one can first the base metal in the form of a resin with screen printing apply and then sinter in a reducing atmosphere, after which the nobler metal in an electrochemical process or applied by vapor deposition or by sputtering becomes; or you can start with the nobler metal in the form of a Apply resin with screen printing and then sinter, after which the base metal is metallic or as a metal compound in printed on a resin or binder and in a protective gas sintered at low temperature in the solid state becomes.
  • the carrier element can consist of ceramic (steatite, Al 2 O 3 , ZrO 2 ).
  • a thermal insulation layer can be provided.
  • the carrier element can also consist of steel; in this case, an electrical and thermal insulating layer (analogous to the known "metal board technology") must be provided.
  • an ignition bridge 1 is thereby trimmed that first into the electrically conductive material cut two parallel lines 2, 3 by means of a laser become.
  • the two outer tracks will be now interrupted by additional incisions 4, 5, so that only the thin middle path remains conductive.
  • This train has thus a relatively high resistance and heats up Current flow sufficiently strong so that the primer ignited becomes.
  • a metal 6 is provided on the metal 7 of the ignition bridge.
  • the metal 6 can be zirconium, the metal 7 a Gold-palladium alloy.
  • the metal 6 is in the form of a Strokes applied so that the incisions unimpeded when trimming can be carried out (in Fig. 2 are only the line 3 and the incision 5 shown).
  • metal 6 ' is in the form of several islands the metal 7 arranged.
  • the arrangement and size is only exemplary shown. Here, too, it is easily possible at Trim cuts 4, 5 to make.
  • a metal 7 e.g. gold / palladium
  • a metal 6 "(e.g. nickel) is applied in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the metal 6" in the form of powdered zirconium a grain size of about 1 ⁇ m.
  • a corrosion layer 9 e.g. made of gold, applied to the metal 7.
  • This corrosion layer can e.g. be applied by cementation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)

Abstract

Pyrotechnic igniter comprises an ignition bridge (1) with a reactive layer made from a combustible metal (6) or a metal which releases energy on alloying with the metal (7) of the bridge. An Independent claim is also included for a process for the production of a pyrotechnic igniter by pressing a resin containing a metal onto a metal base, allowing the resin to dry, and sintering to form a layer composite. Preferred Features: The reactive layer is applied as a score or in the form of islands. A thin electrically insulating layer e.g. made from an oxide or nitride of the reactive layer, is between the ignition bridge and the reactive layer. The combustible metal is zirconium, or titanium, hafnium, niobium, tantalum, aluminum or nickel.

Description

Die vorliegende Erfindung betrifft einen pyrotechnischen Zünder mit einer Zündbrücke, auf der eine reaktive Schicht aufgebracht ist.The present invention relates to a pyrotechnic Detonator with an ignition bridge on which a reactive layer is applied.

Solch ein Zünder ist aus der EP 609605 A1 bekannt. Es ist dort in Fig. 4 eine Zündbrücke gezeigt, auf der pyrotechnisches Material aufgedruckt oder aufgemalt ist. Als pyrotechnisches Material ist Bleistyphnat konkret genannt. Der Vorteil von pyrotechnischem Material auf der Zündbrücke besteht darin, dass die Energieabgabe größer ist als die aufgenommene elektrische Energie. Mit Hilfe dieser zusätzlichen Energie kann ein Abstand zwischen der Zündbrücke und dem Zündsatz problemlos überwunden werden.Such an igniter is known from EP 609605 A1. It is shown there in Fig. 4 an ignition bridge, on the pyrotechnic Material is printed or painted on. As a pyrotechnic Material is specifically called pencil phosphate. The advantage of pyrotechnic material on the ignition bridge in that the energy output is greater than the absorbed one electrical power. With the help of this additional energy can be a distance between the ignition bridge and the primer be easily overcome.

Nachteilig dabei ist, dass solch ein organisches Material, wie es gemäß der EP 609605 A1 vorgesehen ist, mechanisch und thermisch nicht sehr stabil ist und der Kontakt zwischen aufgedruckter Schicht und Glühbrücke nicht immer gewährleistet ist.The disadvantage is that such an organic material, as is provided according to EP 609605 A1, mechanically and is not very stable thermally and the contact between printed Layer and glow plug not always guaranteed is.

Es ist Aufgabe der vorliegenden Erfindung, diese Nachteile zu beseitigen.It is an object of the present invention to overcome these disadvantages to eliminate.

Diese Aufgabe wird durch einen pyrotechnischen Zünder der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass die reaktive Schicht im Wesentlichen aus einem brennbaren Metall oder aus einem Metall, das bei Legierung mit dem Metall der Zündbrücke Energie freisetzt, besteht.This task is performed by a pyrotechnic detonator initially mentioned type solved according to the invention in that the reactive layer is essentially made of a flammable metal or from a metal that when alloyed with the metal the ignition bridge releases energy.

Die Zündbrücke kann dabei gemäß der AT 405591 B aufgebaut sein. Erfindungsgemäß wird also ein Metall und keine organische Verbindung auf die Zündbrücke aufgebracht, wodurch sich eine höhere mechanische Stabilität ergibt. Es ist dabei möglich, dass das Metall mit Sauerstoff reagiert und auf diese Weise Energie freisetzt. Es ist aber auch möglich, dass das Metall mit dem Metall der Zündbrücke reagiert: wird die Zündbrücke aufgeheizt, so schmilzt dieses Metall und bildet mit dem Metall der Zündbrücke eine Legierung; bei geeigneter Wahl von Metallen wird auch dabei erhebliche Energie frei.The ignition bridge can be built according to AT 405591 B. his. According to the invention, it is therefore a metal and not an organic one Connection applied to the ignition bridge, causing results in a higher mechanical stability. It is possible that the metal reacts with and on oxygen Wise releases energy. But it is also possible that Metal reacts with the metal of the ignition bridge: becomes the ignition bridge heated, this metal melts and forms an alloy to the metal of the ignition bridge; with a suitable choice considerable energy is also released from metals.

Vorzugsweise ist die reaktive Schicht als Strich oder in Form von Inseln aufgebracht. Dadurch ergeben sich verfahrenstechnische und kostenmäßige Vorteile; prinzipiell ist es jedoch auch möglich, die Schicht flächig aufzutragen. Zündbrücken werden nämlich mit einem Laser getrimmt, das heißt, deren Breite wird reduziert, damit der elektrische Widerstand genau den vorgegebenen Wert annimmt. Ist die reaktive Schicht als Strich oder in Form von Inseln aufgebracht, so kann man in einem Bereich trimmen, der von der reaktiven Schicht frei ist, was das Trimmen erleichtert.The reactive layer is preferably in the form of a line or in Form of islands applied. This results in procedural and cost advantages; in principle, however, it is it is also possible to apply the layer over a large area. Zündbrücken are trimmed with a laser, that is, their Width is reduced, so the electrical resistance takes exactly the given value. Is the reactive layer applied as a line or in the form of islands, so you can trim in an area that is free of the reactive layer is what makes trimming easier.

Vorzugsweise ist zwischen der Zündbrücke und der reaktiven Schicht eine dünne, elektrisch isolierende Schicht, zum Beispiel aus einem Oxid oder Nitrid der reaktiven Schicht, vorgesehen. Dadurch wird verhindert, dass die reaktive Schicht den elektrischen Widerstand der Zündbrücke verändert. Die elektrisch isolierende Schicht muss natürlich ausreichend dünn sein, damit der thermische Widerstand ausreichend klein bleibt.Is preferably between the ignition bridge and the reactive Layer a thin, electrically insulating layer, for example made of an oxide or nitride of the reactive layer. This prevents the reactive layer changed the electrical resistance of the ignition bridge. The electrically insulating layer must of course be sufficient be thin so that the thermal resistance is sufficiently small remains.

Es ist zweckmäßig, wenn das brennbare Metall Zirkonium ist. Die zündverstärkende Wirkung beruht hier darauf, dass das metallische Zirkonium bei Überschreiten der Zündtemperatur durch die Zündbrücke unter beträchtlicher Energieabgabe verbrennt. Statt Zirkonium kann auch Titan, Hafnium, Niob, Tantal, Aluminium oder Nickel verwendet werden.It is appropriate if the flammable metal is zirconium. The ignition-enhancing effect is based on the fact that the metallic Zirconium when the ignition temperature is exceeded burns through the ignition bridge with considerable energy output. Instead of zirconium, titanium, hafnium, niobium, tantalum, Aluminum or nickel can be used.

Es ist besonders bevorzugt, dass das Metall der Zündbrücke im Wesentlichen aus Gold und/oder Palladium und das brennbare Metall aus Nickel, gegebenenfalls mit Zündverstärker, besteht.It is particularly preferred that the metal of the ignition bridge essentially made of gold and / or palladium and the flammable Metal made of nickel, possibly with an ignition amplifier.

Die Abscheidung einer Nickelschicht auf dem Au(Pd)-Grundmetall ist elektrochemisch günstig im Vielfachnutzen durchführbar, es stehen auch stromlose Verfahren zur Verfügung. Durch Dispersionselektrolyse können beliebige Metallpulver, in diesem Fall zündverstärkende Metalle wie Zr, Hf, Ta, Nb, mit eingebaut werden. Vorzugsweise ist die Korngröße ca. 1µm. Ein besonderer Vorteil des Schichtverbundes auf Au/Ni-Basis ist, dass die beiden Metalle bis ca. 200° praktisch nicht mischbar sind, wodurch eine lange Lebensdauer des Systems gesichert ist.The deposition of a nickel layer on the Au (Pd) base metal is electrochemically inexpensive to carry out in multiple uses, Electroless processes are also available. By Dispersion electrolysis can use any metal powder in this Fall ignition-enhancing metals such as Zr, Hf, Ta, Nb, with to be built in. The grain size is preferably approximately 1 μm. On a particular advantage of the Au / Ni-based layered composite is that the two metals are practically immiscible up to approx. 200 ° are ensured, which ensures a long service life of the system is.

Zur Herstellung eines pyrotechnischen Zünders mit einem Schichtverbund Glühbrücke/brennbares Metall ist erfindungsgemäß vorgesehen, dass zuerst ein das entsprechende Metall enthaltendes Harz auf das Grundmetall aufgedruckt wird, dass man das Harz trocknen lässt und dann das Metall sintert und damit einen Schichtverbund herstellt. Das aufgebrachte Metall kann dabei metallisch oder auch als Metallverbindung (z.B. Resinat im Harz) vorliegen. Das Aufdrucken kann mittels Siebdruck kostengünstig erfolgen. Durch entsprechende Wahl der Atmosphäre beim Sintern ist es möglich, eine Schicht aus dem Oxid bzw. Nitrid des brennbaren Metalls herzustellen, wie sie zur elektrischen Isolation benötigt wird. Darauf wird danach die zündverstärkende Schicht aufgetragen. Bedingt durch die verwendete Technologie (Siebdruck und Sintern) ist der thermische Kontakt zwischen der Zündbrücke und dem brennbaren Metall in jedem Fall gegeben.To make a pyrotechnic detonator with a Laminate glow bridge / combustible metal is according to the invention provided that first the one containing the corresponding metal Resin is printed on the base metal that one let the resin dry and then sinter the metal and with it creates a layered composite. The metal applied can metallic or also as a metal compound (e.g. resinate in the resin). The printing can be done using screen printing done inexpensively. By choosing the right atmosphere during sintering it is possible to make a layer of the oxide or to produce nitride of the combustible metal, as used for electrical insulation is required. Then the ignition-reinforcing layer applied. Due to the used Technology (screen printing and sintering) is thermal Contact between the ignition bridge and the flammable metal given in any case.

Diese Art der Aufbringung ist aber natürlich nicht die einzig mögliche. Für die unedleren Metalle ist z.B. auch die Aufbringung mittels Aufdampfen oder Aufsputtern möglich.Of course, this type of application is not the only one possible. For the less noble metals e.g. also the Can be applied by vapor deposition or sputtering.

Eine andere bevorzugte Ausführungsform besteht darin, dass das Metall der Zündbrücke im Wesentlichen aus Platin oder aus Platinmetallen und das reaktive Metall im Wesentlichen aus Aluminium besteht.Another preferred embodiment is that the metal of the ignition bridge is essentially made of platinum or Platinum metals and the reactive metal essentially Aluminum.

In diesem Fall ist also ein Metall, welches sich mit dem Metall der Zündbrücke unter großer Energieabgabe legiert, aufgebracht. Die Zündbrücke besteht dabei aus dem Edelmetall. Dies ist wegen der hohen Lebensdauer (15 Jahre und mehr) notwendig. Das unedlere Metall kann darüber oder darunter vorgesehen sein.In this case, it is a metal that matches the Alloy metal of the ignition bridge with high energy output, applied. The ignition bridge consists of the precious metal. This is necessary because of the long lifespan (15 years and more). The base metal can be provided above or below his.

Zur Herstellung solch einer Zündbrücke werden erfindungsgemäß die beiden folgenden Verfahren bevorzugt: man kann zunächst das unedlere Metall in Form eines Harzes mit Siebdruck aufbringen und danach in reduzierender Atmosphäre sintern, wonach das edlere Metal in einem elektrochemischen Prozess oder durch Aufdampfen oder durch Aufsputtern aufgebracht wird; oder man kann zunächst das edlere Metall in Form eines Harzes mit Siebdruck aufbringen und danach sintern, wonach das unedlere Metall metallisch oder als Metallverbindung in einem Harz oder Bindemittel aufgedruckt und in einem Schutzgas bei niedriger Temperatur im festen Zustand gesintert wird.According to the invention, for the manufacture of such an ignition bridge the following two methods are preferred: one can first the base metal in the form of a resin with screen printing apply and then sinter in a reducing atmosphere, after which the nobler metal in an electrochemical process or applied by vapor deposition or by sputtering becomes; or you can start with the nobler metal in the form of a Apply resin with screen printing and then sinter, after which the base metal is metallic or as a metal compound in printed on a resin or binder and in a protective gas sintered at low temperature in the solid state becomes.

Das Trägerelement kann aus Keramik (Steatit, Al2O3, ZrO2) bestehen. Dabei kann eine thermische Isolierschicht vorgesehen seien. Das Trägerelement kann aber auch aus Stahl bestehen; in diesem Fall ist eine elektrische und thermische Isolierschicht (analog zu der bekannten "metal board technology") vorzusehen.The carrier element can consist of ceramic (steatite, Al 2 O 3 , ZrO 2 ). A thermal insulation layer can be provided. The carrier element can also consist of steel; in this case, an electrical and thermal insulating layer (analogous to the known "metal board technology") must be provided.

Anhand der beiliegenden, nicht maßstabsgetreuen Zeichnungen wird die vorliegende Erfindung näher erläutert. Es zeigt:

  • Fig. 1 eine herkömmliche, getrimmte Zündbrücke; Fig. 2 eine erste Ausführungsform einer erfindungsgemäßen Zündbrücke;
  • Fig. 3 eine zweite Ausführungsform einer erfindungsgemäßen Zündbrücke; und die Fig. 4 und 5 jeweils einen Teilschnitt durch eine dritte und vierte Ausführungsform einer erfindungsgemäßen Zündbrücke. In allen Abbildungen sind die Kontaktpads nicht dargestellt.
    • The present invention is explained in more detail with reference to the accompanying drawings, which are not to scale. It shows:
  • 1 shows a conventional, trimmed ignition bridge; 2 shows a first embodiment of an ignition bridge according to the invention;
  • 3 shows a second embodiment of an ignition bridge according to the invention; and FIGS. 4 and 5 each show a partial section through a third and fourth embodiment of an ignition bridge according to the invention. The contact pads are not shown in all figures.

    • Wie man aus Fig. 1 erkennt, wird eine Zündbrücke 1 dadurch getrimmt, dass zunächst in das elektrisch leitfähige Material mittels eines Lasers zwei parallele Linien 2, 3 eingeschnitten werden. Dadurch entstehen zwei äußere Bahnen und eine relativ dünne mittlere Bahn. Die beiden äußeren Bahnen werden nun durch zusätzliche Einschnitte 4, 5 unterbrochen, so dass nur die dünne mittlere Bahn leitend bleibt. Diese Bahn hat somit einen relativ hohen Widerstand und erwärmt sich bei Stromfluss ausreichend stark, so dass der Zündsatz gezündet wird.1, an ignition bridge 1 is thereby trimmed that first into the electrically conductive material cut two parallel lines 2, 3 by means of a laser become. This creates two outer tracks and one relative thin middle lane. The two outer tracks will be now interrupted by additional incisions 4, 5, so that only the thin middle path remains conductive. This train has thus a relatively high resistance and heats up Current flow sufficiently strong so that the primer ignited becomes.

    Wie man in Fig. 2 erkennt, ist gemäß der vorliegenden Erfindung ein Metall 6 auf dem Metall 7 der Zündbrücke vorgesehen. Das Metall 6 kann Zirkonium sein, das Metall 7 eine Gold-Palladium-Legierung. Das Metall 6 ist in Form eines Strichs aufgetragen, so dass die Einschnitte beim Trimmen ungehindert durchgeführt werden können (in der Fig. 2 sind nur die Linie 3 und der Einschnitt 5 dargestellt).As can be seen in Figure 2, this is in accordance with the present invention a metal 6 is provided on the metal 7 of the ignition bridge. The metal 6 can be zirconium, the metal 7 a Gold-palladium alloy. The metal 6 is in the form of a Strokes applied so that the incisions unimpeded when trimming can be carried out (in Fig. 2 are only the line 3 and the incision 5 shown).

    Gemäß Fig. 3 ist Metall 6' in Form von mehreren Inseln auf dem Metall 7 angeordnet. Die Anordnung und Größe ist nur beispielhaft dargestellt. Auch hier ist es leicht möglich, beim Trimmen Einschnitte 4, 5 anzubringen.3, metal 6 'is in the form of several islands the metal 7 arranged. The arrangement and size is only exemplary shown. Here, too, it is easily possible at Trim cuts 4, 5 to make.

    Gemäß Fig. 4 ist auf einem Metall 7 (z.B. Gold/Palladium) ein Metall 6" (z.B. Nickel) aufgebracht. In dem Metall 6" ist ein Zündverstärker 8 in Form von pulverförmigem Zirkonium mit einer Korngröße von etwa 1µm eingearbeitet.4 is on a metal 7 (e.g. gold / palladium) a metal 6 "(e.g. nickel) is applied. In the metal 6" is an ignition amplifier 8 in the form of powdered zirconium a grain size of about 1 µm.

    Gemäß Fig. 5 ist zusätzlich eine Korrosionsschicht 9, z.B. aus Gold, auf dem Metall 7 aufgebracht. Diese Korrosionsschicht kann z.B. durch Zementation aufgebracht werden.5, a corrosion layer 9, e.g. made of gold, applied to the metal 7. This corrosion layer can e.g. be applied by cementation.

    Claims (10)

    Pyrotechnischer Zünder mit einer Zündbrücke, auf der eine reaktive Schicht aufgebracht ist, dadurch gekennzeichnet, dass die reaktive Schicht im Wesentlichen aus einem brennbaren Metall (6, 6') oder aus einem Metall (6, 6'), das bei Legierung mit dem Metall (7) der Zündbrücke Energie freisetzt, besteht.Pyrotechnic detonator with an ignition bridge on which a reactive layer is applied, characterized in that the reactive layer consists essentially of a combustible metal (6, 6 ') or of a metal (6, 6') which, when alloyed with the metal (7) the ignition bridge releases energy. Pyrotechnischer Zünder nach Anspruch 1, dadurch gekennzeichnet, dass die reaktive Schicht als Strich (6) oder in Form von Inseln (6') aufgebracht ist.Pyrotechnic detonator according to claim 1, characterized in that the reactive layer is applied as a line (6) or in the form of islands (6 '). Pyrotechnischer Zünder nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zwischen der Zündbrücke und der reaktiven Schicht eine dünne, elektrisch isolierende Schicht, zum Beispiel aus einem Oxid oder Nitrid der reaktiven Schicht, vorgesehen ist.Pyrotechnic igniter according to claim 1 or 2, characterized in that a thin, electrically insulating layer, for example made of an oxide or nitride of the reactive layer, is provided between the ignition bridge and the reactive layer. Pyrotechnischer Zünder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das brennbare Metall (6, 6') Zirkonium ist.Pyrotechnic igniter according to one of claims 1 to 3, characterized in that the combustible metal (6, 6 ') is zirconium. Pyrotechnischer Zünder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das brennbare Metall (6, 6') Titan, Hafnium, Niob, Tantal, Aluminium oder Nickel ist.Pyrotechnic igniter according to one of claims 1 to 3, characterized in that the combustible metal (6, 6 ') is titanium, hafnium, niobium, tantalum, aluminum or nickel. Pyrotechnischer Zünder Anspruch 5, dadurch gekennzeichnet, dass das Metall (7) der Zündbrücke im Wesentlichen aus Gold und/oder Palladium und das brennbare Metall (6, 6', 6") aus Nickel, gegebenenfalls mit Zündverstärker (8), besteht.Pyrotechnic igniter claim 5, characterized in that the metal (7) of the ignition bridge consists essentially of gold and / or palladium and the combustible metal (6, 6 ', 6 ") consists of nickel, optionally with an ignition amplifier (8). Verfahren zur Herstellung eines pyrotechnischen Zünders nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zuerst ein das entsprechende Metall enthaltendes Harz auf das Grundmetall aufgedruckt wird, dass man das Harz trocknen lässt und dann das Metall sintert und damit einen Schichtverbund herstellt.Method for producing a pyrotechnic igniter according to one of claims 1 to 6, characterized in that first a resin containing the corresponding metal is printed on the base metal, that the resin is allowed to dry and then the metal is sintered and thus a layer composite is produced. Pyrotechnischer Zünder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Metall (7) der Zündbrücke im Wesentlichen aus Platin oder aus Platinmetallen und das reaktive Metall (6, 6',6") im Wesentlichen aus Aluminium besteht.Pyrotechnic igniter according to one of Claims 1 to 3, characterized in that the metal (7) of the ignition bridge essentially consists of platinum or of platinum metals and the reactive metal (6, 6 ', 6 ") essentially consists of aluminum. Verfahren zur Herstellung eines pyrotechnischen Zünders nach Anspruch 1, 2, 3, 7 oder 8, dadurch gekennzeichnet, dass zunächst das unedlere Metall in Form eines Harzes mit Siebdruck aufgebracht und danach in reduzierender Atmosphäre gesintert wird, wonach das edlere Metal in einem elektrochemischen Prozess oder durch Aufdampfen oder durch Aufsputtern aufgebracht wird.A method for producing a pyrotechnic igniter according to claim 1, 2, 3, 7 or 8, characterized in that first the base metal is applied in the form of a resin with screen printing and then sintered in a reducing atmosphere, after which the nobler metal in an electrochemical process or is applied by vapor deposition or by sputtering. Verfahren zur Herstellung eines pyrotechnischen Zünders nach Anspruch 1, 7 oder 8, dadurch gekennzeichnet, dass zunächst das edlere Metall in Form eines Harzes mit Siebdruck aufgebracht und danach gesintert wird, wonach das unedlere Metall metallisch oder als Metallverbindung in einem Harz oder Bindemittel aufgedruckt und in einem Schutzgas bei niedriger Temperatur im festen Zustand gesintert wird.A method for producing a pyrotechnic igniter according to claim 1, 7 or 8, characterized in that first the nobler metal is applied in the form of a resin with screen printing and then sintered, after which the less noble metal is printed in a metal or as a metal compound in a resin or binder and in a protective gas is sintered in the solid state at low temperature.
    EP02450034A 2001-02-23 2002-02-22 Pyrotechnic igniter and manufacturing process therefor Expired - Lifetime EP1235047B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    AT02450034T ATE338257T1 (en) 2001-02-23 2002-02-22 PYROTECHNICAL IGNITION AND METHOD FOR THE PRODUCTION THEREOF

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    AT2962001 2001-02-23
    AT0029601A AT410316B (en) 2001-02-23 2001-02-23 PYROTECHNICAL IGNITER AND METHOD FOR THE PRODUCTION THEREOF

    Publications (3)

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    EP1235047A2 true EP1235047A2 (en) 2002-08-28
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    EP (1) EP1235047B1 (en)
    AT (2) AT410316B (en)
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    US20050066833A1 (en) * 2003-09-04 2005-03-31 Hamilton Brian K. Single pin initiator for a gas generating device
    US6905562B2 (en) * 2003-09-04 2005-06-14 Autoliv Asp, Inc. Low density slurry bridge mix
    CN101036034B (en) * 2004-10-04 2012-11-28 日本化药株式会社 Semiconductor bridge circuit apparatus and igniter including the same
    US8573123B1 (en) * 2010-05-18 2013-11-05 The United States Of America As Represented By The Secretary Of The Army Flexible detonator integrated with directly written energetics
    DE102019116464A1 (en) * 2019-06-18 2020-12-24 NEFZER SPECIAL EFFECTS GmbH Film effect detonator and method of manufacture

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    AT410316B (en) 2003-03-25
    ES2272661T3 (en) 2007-05-01
    DE50207960D1 (en) 2006-10-12
    US6895863B2 (en) 2005-05-24
    ATE338257T1 (en) 2006-09-15
    US20020117070A1 (en) 2002-08-29
    EP1235047B1 (en) 2006-08-30
    ATA2962001A (en) 2002-08-15
    EP1235047A3 (en) 2002-12-18
    US20040123764A1 (en) 2004-07-01

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