DE10234011A1 - Cutting textiles containing plastic fibres, comprises using a laser to cut along a predetermined pattern - Google Patents

Cutting textiles containing plastic fibres, comprises using a laser to cut along a predetermined pattern Download PDF

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Publication number
DE10234011A1
DE10234011A1 DE10234011A DE10234011A DE10234011A1 DE 10234011 A1 DE10234011 A1 DE 10234011A1 DE 10234011 A DE10234011 A DE 10234011A DE 10234011 A DE10234011 A DE 10234011A DE 10234011 A1 DE10234011 A1 DE 10234011A1
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DE
Germany
Prior art keywords
cutting
laser beam
cut
pattern
laser
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Withdrawn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
DE10234011A
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German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LANG LASER SYSTEM GmbH
LANG LASER-SYSTEM GmbH
Original Assignee
LANG LASER SYSTEM GmbH
LANG LASER-SYSTEM GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LANG LASER SYSTEM GmbH, LANG LASER-SYSTEM GmbH filed Critical LANG LASER SYSTEM GmbH
Priority to DE10234011A priority Critical patent/DE10234011A1/en
Priority to DE10393495T priority patent/DE10393495D2/en
Priority to PCT/DE2003/000839 priority patent/WO2004016847A1/en
Priority to AU2003223872A priority patent/AU2003223872A1/en
Publication of DE10234011A1 publication Critical patent/DE10234011A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/0869—Devices involving movement of the laser head in at least one axial direction
    • B23K26/0876—Devices involving movement of the laser head in at least one axial direction in at least two axial directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/30—Organic material
    • B23K2103/38—Fabrics, fibrous materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/30—Organic material
    • B23K2103/42—Plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Laser Beam Processing (AREA)

Abstract

A process for cutting textiles which contain plastic fibres, comprises using a laser to cut along a predetermined pattern. The laser can be deflected and focussed as required. The cutting unit comprises a laser source, a motor driven deflector mirror unit, a motor driven focussing unit, and a control unit. The laser source is fixed, and the deflecting mirror unit consists of two mirrors which can be swiveled in two perpendicular planes.

Description

Das technische Gebiet, zu dem die Erfindung gehört ist das Schneiden von Textilien bestehend aus Kunststofffasern (wie z.B. Polyamid, Polyethylen etc.) bzw. Kunststoff faseranteilen.The technical field to which the Invention belongs is the cutting of textiles consisting of plastic fibers (such as e.g. Polyamide, polyethylene etc.) or plastic fiber components.

Speziell beim Schneiden von Airbagmaterialien (beschichtet, unbeschichtet etc.) wird, um eine große Ausbringungsmenge zu erreichen mit Hochlagen-Cuttern geschnitten. Das heißt übereinanderlegen bis zu 20 Lagen, um dann die Lagen gemeinsam zu Schneiden Geschnitten wird hier mit einem Laserstrahl, was im Kantenbereich aufgrund der Kunststofffasern bzw. Faseranteil zum Verschweißen führt. Deshalb wird hier beim Schneiden eine Folie als Zwischenlage verwendet. Die Nachteile sind;

  • – die zusätzlich notwendige Zwischenlage und das damit verbundene vereinzeln,
  • – beim Legen mehrer Lagen übereinander bilden sich Unebenheiten durch Lufteinschlüsse und Verzug der einzelnen Lagen (z.B. Welligkeit im Außenbereich etc.) ⇒ keine sauberen Schnittkanten und große Maßtoleranzen
Especially when cutting airbag materials (coated, uncoated etc.), high-level cutters are used to achieve a high output. That means laying up to 20 layers on top of each other, in order to then cut the layers together. The cutting is done here with a laser beam, which leads to welding in the edge area due to the plastic fibers or fiber content. Therefore, a film is used as an intermediate layer when cutting. The disadvantages are;
  • - separate the additional intermediate layer and the associated one,
  • - When laying several layers on top of each other, unevenness is caused by air pockets and warping of the individual layers (e.g. waviness in the outside area, etc.) ⇒ no clean cut edges and large dimensional tolerances

Die Alternative hierzu ist das Schneiden auf einem Einzellagen-Cutter. In der Regel handelt es sich hier um einen Plotter, der einen Laserschneidkopf in x- und y- Richtung verfährt. Die Vorteile sind, dass hier keine Zwischenlagen notwendig sind und auch der Stoff relativ eben liegt, was zu einem besseren Schneidergebnis und höheren Genauigkeit führt.The alternative to this is cutting on a single layer cutter. Usually it is here around a plotter that has a laser cutting head in the x and y directions moves. The advantages are that no intermediate layers are necessary here and the fabric is also relatively flat, which leads to a better cutting result and higher Accuracy leads.

Der Nachteil hierin liegt in der viel zu geringen Geschwindigkeit. Sehr schnelle Systeme liegen bei ca. 40 m/min ⇒ deshalb keine echte Alternative zum Hochlagen-Cutter hinsichtlich der Ausbringungsmenge.The disadvantage here is that much too slow speed. Very fast systems are included approx. 40 m / min ⇒ therefore not a real alternative to the high-layer cutter in terms of output.

Die Erfindung besteht darin, dass die Vorteile des Einzellagen-Cutters kombiniert mit der Realisierung extrem hoher Schneidgeschwindigkeiten gelöst wurde.The invention is that the advantages of the single-layer cutter combined with the implementation extremely high cutting speeds.

Als Schneidwerkzeug dient ein Laserstrahl, der von der Laserstrahlquelle über eine Aufweitoptik und zwei nachfolgenden Galvanometer-Scanner auf das Gewebe/Stoff fokussiert wird. Dabei ist die Aufweitoptik mit einer variablen (motorisch angetriebener Linsenverschiebung) Brennweite ausgestattet, die dafür sorgt, dass bei Auslenkung des Laserstrahls über die Galvanometer-Scanner der Brennpunkt immer auf der Schneidebene liegt. Die Galvanometer-Scanner sind mit Spiegeln ausgestattet ( Siehe l) und lenken den Laserstrahl in X-Y-Richtung ab. Das somit entstandene Schneidfenster liegt im Bereich von 200mm × 200mm bis ca. 1500mm × 1500mm.A laser beam is used as the cutting tool, which is focused on the tissue by the laser beam source via an expansion lens and two subsequent galvanometer scanners. The expansion optics are equipped with a variable (motor-driven lens shift) focal length, which ensures that when the laser beam is deflected via the galvanometer scanner, the focal point is always on the cutting plane. The galvanometer scanners are equipped with mirrors (see l ) and deflect the laser beam in the XY direction. The resulting cutting window is in the range from 200mm × 200mm to approx. 1500mm × 1500mm.

Neu daran ist, dass es möglich ist mit einer Laserleistung im Bereich von ca. 500 W – 3 kW Kunststoffgewebe (Airbagmaterial) mit sehr hohen Geschwindigkeiten zu schneiden und somit alle Vorteile eines Einzellagen-Cutters zu nutzen. Die Geschwindigkeiten sind in der Größenordnung von ca. 1m/sec. bis ca. 7m/sec. (Abhängig von den jeweiligen Materialien und Schneidfenstern). Desweiteren neu ist, daß durch den Einsatz von 2 Systemen nebeneinander über einen entsprechenden mechanischen Aufbau und einer speziell hierfür entwickelten Ansteuerung Gewebe/Stoff bis zu einer Breite von ca. 3m geschnitten werden kann. Der Gewebe/Stoff Transport erfolgt automatisch über einen Conveyor bzw. Transportsystem und kann entweder "Schneidfenster-weise" geschnitten werden oder auch kontinuierlich im Durchlauf der Stoffbahn (⇒ sehr kompakte Bauweise).What is new is that it is possible with a laser power in the range of approx. 500 W - 3 kW plastic fabric To cut (airbag material) at very high speeds and to use all the advantages of a single layer cutter. The speeds are of the order of magnitude of approx. 1m / sec. up to 7m / sec. (Depending on the respective materials and cutting windows). Another new thing is that by using 2 systems side by side over a corresponding mechanical structure and a control specially developed for this Fabric / fabric can be cut up to a width of approx. 3m. The fabric / fabric transport takes place automatically via a conveyor or transport system and can be cut either "cutting window-wise" or also continuously in the passage of the fabric web (⇒ very compact Construction).

1 zeigt einen erfindungsgemäßen 3D-Galvanometerscanner, wobei
1 Strahleintritt
2 Aufweitoptik mit variabler Brennweite
3 Spiegel 1
4 Galvanometer-Scanner 1
5 Spiegel 2
6 Galvanometer-Scanner 2
7 Strahlaustritt
8 Schneidebene 1 shows a 3D galvanometer scanner according to the invention, wherein
1 beam entrance
2 Expansion optics with variable focal length
3 Mirror 1
4 Galvanometer scanner 1
5 Mirror 2
6 Galvanometer scanner 2
7 beam exit
8th cutting plane

2 zeigt eine Frontansicht und 3 zeigt eine Seitenansicht eines Beispiels eines Anlagenkonzeptes Einzellagen-Cutters (Schneidsystem), wobei
1 3D - Galvanometerscanner
2 Schneidebene
3 Transportband/Conveyor
4 Laserstrahlquelle
5 Strahlweg
6 Stoff/Gewebe-Zuführung
7 Strahlschutzgehäuse
8 Teile-Entnahmebereich 2 shows a front view and 3 shows a side view of an example of a system concept single layer cutter (cutting system), wherein
1 3D galvanometer scanner
2 cutting plane
3 Conveyor / conveyor
4 laser beam source
5 beam path
6 Fabric / tissue feeding
7 Ray protective housing
8th Parts-removal area

Claims (12)

Verfahren zum Schneiden von Textilien, die aus Kunststoffasern bestehen oder einen Anteil an Kunststoffasern aufweisen, mittels eines Laserstrahls nach einem vorgegebenen Schnittmuster, wobei ein Laserstrahl aufgeweitet, entsprechend dem zu erzeugenden Schnittmuster umgelenkt und auf die zu schneidende Textilie fokussiert wird.Process for cutting textiles made of plastic fibers exist or have a proportion of plastic fibers, by means of a laser beam according to a predetermined cutting pattern, wherein a laser beam is expanded in accordance with the cutting pattern to be generated is redirected and focused on the textile to be cut. Schneidvorrichtung zum Schneiden von Textilien, die aus Kunststoffen bestehen oder einen Anteil an Kunststoffen aufweisen, nach einem vorgegebenen Schnittmuster, zur Durchführung des Verfahrens nach Anspruch 1, wobei die Schneidvorrichtung folgendes enthält: eine Laserquelle zur Erzeugung eines Laserstrahls, eine Aufweitoptik zur Aufweitung des in der Laserquelle erzeugten Laserstrahls, eine motorisch angetriebene Umlenkspiegeleinrichtung zum Umlenken des aufgeweiteten Laserstrahls entsprechend dem zu erzeugenden Schnittmuster, eine motorisch angetriebene Fokussiereinrichtung zum Fokussieren des Laserstrahls auf die Ebene der zu schneidenden Textilie in Abhängigkeit von der Umlenkung des Laserstrahls, und eine Steuereinrichtung zum Steuern des Betriebs der Schneidvorrichtung.Cutting device for cutting textiles, which consist of plastics or have a proportion of plastics, according to a predetermined cutting pattern, for carrying out the method according to claim 1, wherein the cutting device contains the following: a laser source for generating a laser beam, an expansion optics for expanding the in Laser source generated laser beam, a motor-driven deflection mirror device for deflecting the expanded laser beam according to the cutting pattern to be generated, a motor-driven focusing device for focusing the laser beam on the plane of the textile to be cut depending on the Deflection of the laser beam, and a control device for controlling the operation of the cutting device. Schneidvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Aufweitoptik mit einer variablen Brennweite ausgestattet ist.Cutting device according to claim 2, characterized in that the Expansion optics is equipped with a variable focal length. Schneidvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß eine Linse oder Linsengruppe der Aufweitoptik motorisch in Richtung des Laserstrahls verschiebbar ist.Cutting device according to claim 3, characterized in that a Lens or lens group of the expansion optics motorized in the direction of Laser beam is displaceable. Schneidvorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Umlenkspiegeleinrichtung zwei Umlenkspiegel umfaßt, die in zwei zueinander senkrecht stehenden Ebenen verschwenkbar sind.Cutting device according to one of claims 2 to 4, characterized in that that the Deflecting mirror device comprises two deflecting mirrors, which are in two to each other vertically standing planes are pivotable. Schneidvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß zum Verschwenken eines jeden Umlenkspiegels jeweils ein Galvanometer-Scanner vorgesehen ist.Cutting device according to claim 5, characterized in that for A galvanometer scanner pivots each deflecting mirror is provided. Schneidvorrichtung nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß die Laserquelle ortsfest ist.Cutting device according to one of claims 2 to 6, characterized in that that the Laser source is stationary. Schneidanlage zum Schneiden von Textilien, die mindestens zwei Schneidvorrichtungen nach einem der Ansprüche 2 bis 7 aufweist, wobei für die mindestens zwei Schneidvorrichtungen eine gemeinsame Steuereinrichtung vorgesehen ist und die mindestens zwei Schneidvorrichtungen so angeordnet und steuerbar sind, daß unmittelbar benachbarte Bereiche der zu schneidenden Textilien geschnitten werden können.Cutting machine for cutting textiles that have at least two Cutting devices according to one of claims 2 to 7, wherein for the least two cutting devices provided a common control device is and the at least two cutting devices arranged and are controllable that immediately adjacent areas of the textiles to be cut are cut can. Schneidanlage nach Anspruch 8, wobei eine Textilienbahn einem Schneidbereich der Schneidanlage zuführbar ist, in welchem die Textilienbahn entsprechend dem Schnittmuster geschnitten wird, wobei die Umlenkspiegeleinrichtungen der mindestens zwei Schneidvorrichtungen quer zur Transportrichtung der Textilienbahnen nebeneinanderliegend angeordnet sind.Cutting system according to claim 8, wherein a textile web one Cutting area of the cutting system can be fed, in which the textile web is cut according to the pattern, the deflecting mirror devices the at least two cutting devices transversely to the transport direction the textile webs are arranged side by side. Schneidanlage nach Anspruch 9, dadurch gekennzeichnet, daß die Textilienbahn den Schneidbereich entsprechend dem zu schneidenden Schnittmuster schrittweise zuführbar ist.Cutting system according to claim 9, characterized in that the textile web the cutting area according to the pattern to be cut can be fed gradually is. Schneidanlage nach Anspruch 9, dadurch gekennzeichnet, daß die Textilienbahn dem Schneidbereich kontinuierlich zuführbar ist.Cutting system according to claim 9, characterized in that the textile web the cutting area can be fed continuously. Schneidanlage nach einem der Ansprüche 9 bis 11, dadurch gekennzeich net, daß die Textilienbahn von einer Vorratsrolle zuführbar ist.Cutting system according to one of claims 9 to 11, characterized in net that the Textile web can be fed from a supply roll.
DE10234011A 2002-07-26 2002-07-26 Cutting textiles containing plastic fibres, comprises using a laser to cut along a predetermined pattern Withdrawn DE10234011A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE10234011A DE10234011A1 (en) 2002-07-26 2002-07-26 Cutting textiles containing plastic fibres, comprises using a laser to cut along a predetermined pattern
DE10393495T DE10393495D2 (en) 2002-07-26 2003-03-14 Method, device and installation for cutting textiles by means of laser
PCT/DE2003/000839 WO2004016847A1 (en) 2002-07-26 2003-03-14 Method, device and installation for cutting textiles by means of a laser beam
AU2003223872A AU2003223872A1 (en) 2002-07-26 2003-03-14 Method, device and installation for cutting textiles by means of a laser beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10234011A DE10234011A1 (en) 2002-07-26 2002-07-26 Cutting textiles containing plastic fibres, comprises using a laser to cut along a predetermined pattern

Publications (1)

Publication Number Publication Date
DE10234011A1 true DE10234011A1 (en) 2004-02-05

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Application Number Title Priority Date Filing Date
DE10234011A Withdrawn DE10234011A1 (en) 2002-07-26 2002-07-26 Cutting textiles containing plastic fibres, comprises using a laser to cut along a predetermined pattern
DE10393495T Expired - Fee Related DE10393495D2 (en) 2002-07-26 2003-03-14 Method, device and installation for cutting textiles by means of laser

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE10393495T Expired - Fee Related DE10393495D2 (en) 2002-07-26 2003-03-14 Method, device and installation for cutting textiles by means of laser

Country Status (3)

Country Link
AU (1) AU2003223872A1 (en)
DE (2) DE10234011A1 (en)
WO (1) WO2004016847A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005051733A1 (en) * 2005-10-28 2007-05-03 Volkswagen Ag Device for producing a cover for an airbag comprises units for adjusting the curve and/or position of an optical component depending on the position of a focal point toward the lower side of the cover
EP2011600A2 (en) * 2007-07-04 2009-01-07 Held Systems AG Device for cutting technical fabric, in particular airbags

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI119593B (en) * 2006-01-19 2009-01-15 Savcor Alfa Oy Laser welding procedure
WO2008091380A2 (en) * 2006-08-22 2008-07-31 Gsi Group Corporation System and method for employing a resonant scanner in an x-y high speed drilling system
ITFI20080053A1 (en) 2008-03-20 2009-09-21 Ot Las S R L "WORKING DEVICE THROUGH LASER BEAM OF A TAPE MATERIAL WITH SUPPORTING SYSTEM AND SUPPLY OF THE MATERIAL IN CORRESPONDENCE WITH THE WORKING AREA"
CN101913024A (en) * 2010-08-24 2010-12-15 上海市激光技术研究所 System and method for processing dynamic focusing scanning spot track of optical fiber laser or disk laser
FR2967696B1 (en) * 2010-11-24 2012-11-16 Ascodero Productique INSTALLATION FOR CUTTING A TEXTILE, IN PARTICULAR FOR LACE WASHING
CN105479015A (en) * 2016-01-22 2016-04-13 深圳市荣兴精密激光技术有限公司 Large-format laser machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6037968A (en) * 1993-11-09 2000-03-14 Markem Corporation Scanned marking of workpieces
WO1997019217A2 (en) * 1995-11-21 1997-05-29 Loughborough University Innovations Limited Control methods and apparatus
JP3346374B2 (en) * 1999-06-23 2002-11-18 住友電気工業株式会社 Laser drilling machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005051733A1 (en) * 2005-10-28 2007-05-03 Volkswagen Ag Device for producing a cover for an airbag comprises units for adjusting the curve and/or position of an optical component depending on the position of a focal point toward the lower side of the cover
EP2011600A2 (en) * 2007-07-04 2009-01-07 Held Systems AG Device for cutting technical fabric, in particular airbags
EP2011600A3 (en) * 2007-07-04 2010-12-29 Held Systems AG Device for cutting technical fabric, in particular airbags

Also Published As

Publication number Publication date
WO2004016847A1 (en) 2004-02-26
DE10393495D2 (en) 2005-06-23
AU2003223872A1 (en) 2004-03-03

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