DE102004001327B4 - Method and apparatus for laser perforation of wide webs - Google Patents

Abstract

method for laser perforation of wide webs (1), e.g. for cigarettes, Mundstückbelag- or coffee filter papers, filter wrap papers called plug wraps, Security papers, holographic printed, foil pressed, coated or metallised paper or packaging or plastic sheets like BOPP, LDPE, HDPE or spin nonwovens with visible or invisible ones Laser beams whose rows of holes (23) substantially parallel to Transport direction (14) of the web (1) are formed, characterized characterized in that by a continuous circular circulation movement a or more laser beams (5) from above and / or below the rotating, cubic beam splitter (36) and fed to the horizontal plane are deflected so that all the outer circle of the optical high-power laser multiplexer (2) circumferential single optical channels (7, 8) of one or more, rotating laser beams (37, 40, 41, 42) via the inlet cylinder lenses (29) within a specific time window and for all individual channels be supplied, so that at least 40 single optical channels with minimal transmission losses of Beam power and beam quality available are.

Description

The Invention describes and includes a method and apparatus for Laser perforation moved up to 600 m / min and up to 2000 mm wide webs, wherein the generated laser rows or rows of holes arranged substantially parallel to the transport direction of the web are.

Under moving webs are in the context of this invention in particular Paper or otherwise finished webs, e.g. Cigarette, mouthpiece coating and coffee filter papers, filter wrap papers called plug-wrap, Security papers, holographic printed, foil pressed, coated or metallized paper or packaging or even certain Plastic sheets such as BOPP, LDPE, HDPE, spin nonwovens, etc. at least in the area of the perforations a certain degree of gas or water permeability exhibit. These materials are used for various finishing processes in the format of 400-2000 mm as large rolls, or also called Jumbo rolls, in lengths up to 25,000 meters and Roll diameters up to 1500 mm unrolled and rolled up. Therefore, in this Invention with broad webs material widths of at least 200 mm, which for tipping papers transferable to at least 3 bobs is to look at.

in the Similarly, the laser perforation is called offline perforation and is clearly different from the online laser perforation to cigarette manufacturing or filter attachment machines or else From packaging machines. The ones with the human eye normally not visible, or if desired Visible, perforations are very strong with focusable single laser beams precise in the hole size and hole position produced. Due to the physical conditions and thermal Properties and associated absorptions of the preferred used webs come CO2 power lasers in the wave range from 10.4 to 10.8 μm.

• • Materialflächengewichte: 16–100 g/m2
• • Materialbahndicken: 30–80 μm
• • Materialbedruckungen: unterschiedlichster Art und Positionen – meist außerhalb der Perforationsbereiche
• • Bahnbreiten: 400–2000 mm
• • Bahngeschwindigkeiten: bis zu 600 m/min
• • statische Porositätsmessung: Luftdurchsatzmeßsysteme, z.B. Borgwaldt oder Sodimat
• • physikalische Messeinheit der Gasdurchlässigkeit, hier als Porosität genannt für diese Meßsysteme: Coresta Units – ml/min/cm
• • Porositätsbereiche: 80–4000 C.U.
• • Porositätsvariationen: < 3 % bei Porositätsbereichen von > 400 C.U.
• • Lochgrößen: 60–300 μm, als Mikro- oder Makrolöcher
• • Lochdichten: 5–40 Löcher pro cm in Bahnlaufrichtung
• • Lochformen: optimal rund bis leicht oval, ohne Außengrad
• • Porosität pro Perforationsloch: 8–80 C.U.
• • Anzahl der Laserlochreihen pro Bobienenseite und Bobiene: 2–6 auf jeder Seite – somit 4–12 für jede einzelne Bobiene
• • minimale Abstände zwischen zwei nebeneinander liegenden Lochreihen: 1.0 mm
• • Lochreihen- oder Lochreihengruppenabstand untereinander: 10–40 mm
• • Anzahl der Einzellochreihen über die Bahnbreite verteilt: 8–120 und mehr
• • Positionierung jeder Laserlochreihe über die Bahnbreite: +/– 0.1 mm
• • Lochanzahl für alle Lochreihen zusammen: 100.000–2.000.000 Löcher pro Sekunde
• • Kinetische Energie pro erzeugtes Laserloch – je nach Materialart: 2.0–4.0 mJ
• • Zeitfenster des Laserstrahles pro Perforationsloch: 20–50 μs
• • CO-2 Laser 10.6 μm Wellenlänge und optische Leistungen von 500–4000 Watt
• • CW- oder Puls-Betrieb bis 10.000 Hz, einstellbares Impuls-Pausen-Verhältnis
• • Schwankungen der optischen Laserleistung: 2–4 % max.
• • Lasermoden: TEM00 Grundmode oder höhere Moden
• • Strahlqualitätsfaktor: M = 0.6–1.0 mrad
• • Energiedichten bei Fokussierungen des Hauptstrahles in Größenordnungen von 100–200 μm: 1–10·10E8 Watt/cm2
• • Durchmesser des zugeführten Laserstrahles: 8–12 mm
• • sehr präzise und gleich bleibende Materialbahnführung im Fokusbereich mit Bahnschwankungen < 100 μm
• • Rotation von Drehspiegeln oder anderen optischen Elementen: 10.000–50.000 U/min

For this, the essential facts and requirements of the offline laser perforation for the initially mentioned webs can be summarized as follows:

• • Stock weights: 16-100 g / m2
• • Material web thicknesses: 30-80 μm
• • Material printings: various types and positions - usually outside of the perforation areas
• • Web widths: 400-2000 mm
• • Web speeds: up to 600 m / min
• • static porosity measurement: air flow measuring systems, eg Borgwaldt or Sodimat
• • physical measuring unit of the gas permeability, here called porosity for these measuring systems: Coresta units - ml / min / cm
• • Porosity ranges: 80-4000 CU
• Porosity variations: <3% for porosity ranges of> 400 CU
• • Hole sizes: 60-300 μm, as micro or macro holes
• • Hole densities: 5-40 holes per cm in web direction
• • Hole shapes: optimally round to slightly oval, without outer grade
• • Porosity per hole: 8-80 CU
• • Number of rows of laser holes per baton side and bobies: 2-6 on each side - thus 4-12 for each individual bobies
• • minimum distances between two adjacent rows of holes: 1.0 mm
• • Pitch or row spacing between each other: 10-40 mm
• • Number of single-hole rows distributed across the web width: 8-120 and more
• • Positioning of each laser hole row over the web width: +/- 0.1 mm
• • Number of holes for all rows of holes together: 100,000-2,000,000 holes per second
• • Kinetic energy per generated laser hole - depending on the material type: 2.0-4.0 mJ
• • Time window of the laser beam per perforation hole: 20-50 μs
• • CO-2 laser 10.6 μm wavelength and optical powers of 500-4000 watts
• • CW or pulse operation up to 10,000 Hz, adjustable pulse-pause ratio
• • Optical power fluctuations: 2-4% max.
• • Laser modes: TEM00 basic mode or higher modes
• • Beam quality factor: M = 0.6-1.0 mrad
• • Energy densities for main beam focusing in the order of 100-200 μm: 1-10 · 10E8 Watt / cm2
• • Diameter of the supplied laser beam: 8-12 mm
• • very precise and constant material web guidance in the focus area with web fluctuations <100 μm
• • Rotation of rotating mirrors or other optical elements: 10,000-50,000 rpm

Under this physical, technical background and the high product requirements The following invention of the offline laser perforation can be seen and are their advantageous solutions Developed.

The state of the art for deflecting, diverting, propagating and pulsing CO2 laser beams is described in a large number of international and national patents, so that in this The intellectual property rights which are directly or indirectly related to the perforation of the webs from the above-mentioned fields of application are to be indicated with the prior art.

In the patents DE 29.18.283 C2 . DE 195.11.393A1 . FR 21.30.698 A1 and US 41.18.619 A Basic methods and devices are specified and described in detail, with which laser beams through rotating mirrors, polygons or diffractive optical elements also called DOEs, are deflected at an angle usually less than 90 degrees and / or doubled on continuous paper webs are used for perforation.

These Process and device techniques are in the years thereafter for many Offline laser perforating machines, as multiple Bobienenperforationsanlagen with up to four simultaneously processed bobs, bobbin lengths up to 4000 meters, up to 32 single jet channels, web widths up to 400 mm, Web speeds up to 600 m / min and hole sequences up to 500,000 L / sec. successfully converted.

From patents on online perforation cigarette manufacturing or filter attachment machines, eg the US 5,404,889 A . US 5,746,229 A . JP 100.34.365A . US 6,229,115 B1 . US 6,064,032 A . US 200.100.38.068 A1 . US 200.301.31.856 A1 , and US 200,201,580.50 A1 Technologically high-quality solutions for laser beam deflection and deflection with oscillating mirrors and special optical graduation elements are described in detail. These relate exclusively to a maximum of two Bobienen- or two Bobienenstreifen, the laser perforation often enters through the tipping papers through the filter to lower the nicotine and pollutant levels of cigarettes produced immediately afterwards.

In PCT WO-99/58006 A1 and EP 0,624,424 B1 For example, ON-LINE laser perforation methods and devices are described which use optical elements, eg, acousto-optic transducers, prism beam redirectors with special paper web guidance, to perforate a maximum of two bobbin strips just prior to manufacture of the cigarettes. This also applies to the disclosure DE 43.28.894 A1 in which prism elements and beam deflection and lenses for the perforations of substrate webs are used for the multiple beam division.

As As can be seen from these documents are usually two Bobienenstreifen Perforated online as well as for offline laser perforations up to a maximum 4 bobbins and 32 single jet channels at 90 degrees to the web running direction mechanically very complex, optical beam guides and focussing, so the positioning of each laser perforation line on the traversing Material web to achieve.

In the application DE 28.28.754 A1 are used for laser perforation oblique, rotating, optical chopper discs, passes through the openings and reflection elements of the laser beam to the perforation. Understandably, this involves a number of disadvantages with regard to laser power losses, beam quality losses at the optical edges, the relatively difficult positioning of the individual laser beams, their geometric flexibility and a limitation of the individual optical channels of significantly less than 40 and the associated number of bays and web width.

From the registration DE 37.42.553 A1 It is known that oscillating galvanometers deflect a laser beam in the angular range of, for example, +/- 30 degrees and impinge on converging lenses, through which the deflected laser beam can then enter into connected individual fibers and be continued. This is not a 360 degree 360 degree rotating orbital motion, which is not intended and practicable with this method and apparatus.

In the application DE 199.29.426 A1 The laser beam is divided by means of a pinhole in three sub-beams and fed to a four-edged prism stump. Thus, the laser beam splitting already takes place at the pinhole, which includes known disadvantages in the loss of the beam quality at this element and in other at the optical edges of the prism stump.

The prior art known method and its apparatus for multiplexing a laser beam is in the application DE 40.08.605 A1 described, with which the laser beam opens through swiveling and semi-permeable deflection mirrors in individual fibers. This method is not suitable for laser perforation, since it causes enormous losses in the beam blocking in the optical power range of 500 watts-4000 watts, the number of individual optical channels due to the solid structure is low and the processing point of the laser is fixed.

A method and apparatus for OFF-LINE laser perforation of wide tipping paper webs is disclosed in the specification EP 0909606 A1 specified. Here, up to 40 individual beam channels across the web width are generated with mechanically very elaborate laser beam guides fixed at 90 degrees to the direction of web travel and entire production rolls with automated bobbin changing devices, and this also with Online Poro sitätseinrichtungen, which are arranged directly after the perforation, perforation technically finished.

The patent related to the prior art and this invention EP.0.909.606 A1 shows a first consideration that the total number of optical beam channels is limited to 40 and the resulting laser perforation lines are limited to one per bobbin side for 20 bobbins. This results from the geometric and spatial dimensions and the technologically immense effort of the rigid and precise laser beam guides and their deflections and focusing on the web. This is a major disadvantage in the case of broad-web laser perforations with up to 20 simultaneously processed bobs, since two or three rows of laser perforations per bobbin side and thus up to 120 individual optical channels are required in terms of production technology. This can not be realized, of course, with fixed laser beam guides.

• • Standardisierte, flexible Strahlführungssysteme für die Lasermaterialbearbeitung, Photonik 5/2002, Dieter Frank, Firma GMS Frank Optic Products GmbH Berlin.
• • Flexible Hohlwellenleiter für Laseranwendungen, Prof. Dr. K. Behler, Fachhochschule Gießen-Friedberg, Fachbereich Elektrotechnik II, Hannover-Messe 2002.
• • Flexible hollow-Core-Waveguides for CO2-Lasers, potential and limitation as beam guiding system for material processing, Prof. Dr. Behler 2003, Second International WLT-Conference on Lasers in Manufacturing June 2003, Munich.
• • Hollow Silica Waveguides from Polymicro Products; high-power laser fibres, CeramOptec GmbH 2003, data sheet PT-HSW/12-02, http://www.Polymicro.com.
• • Lincoln Laser high-speed scanner Laser products: Firma Lincoln Laser, Phönix USA
• • Ligo Laboratory G030270-00-D: suspension with quadruple beam splitters. Edmund Optics: multiple beam splitters, http://www.edmundoptics.de
• • Laserline GmbH: Strahlweichen/Strahlteiler für Diodenlaser, http://www.laserline.de
• • Omicron Laserage: Lasereffekte mit Mehrfachstrahlteilern, http://www.laserage.de
• • Spekle-Messtechnik am Lehrstuhl für Messsystem/Sensortechnik, http://zeus.eikon.de
• • Ein neues Slablaser-Konzept ermöglicht verbesserte Strahleigenschaften, Keming Du, Edge Wave GmbH 2003, IPL-Aachen.
• • Weg des Laserstrahles vom Lasergerät zum Werkstück 2003, Firma Trumpf GmbH.
• • Press-release Perfolite, high-end-Perfolas, 2001–2003, Rofin Baasel Lasertech GmbH.
• • Laserperforation mit MLP-10 und MLP-50, MLT-Micro Laser Technology GmbH.

As a supplement and related to this invention information as purchased parts or systems for flexible laser beam guides and multiple beam splitters can be found in the following publications.

• • Standardized, flexible beam guidance systems for laser material processing, Photonik 5/2002, Dieter Frank, GMS Frank Optic Products GmbH Berlin.
• • Flexible Hollow Waveguides for Laser Applications, Prof. Dr. med. K. Behler, University of Applied Sciences Gießen-Friedberg, Department of Electrical Engineering II, Hannover Fair 2002.
• Flexible hollow-core waveguides for CO2 lasers, potential and limitation as beam guiding system for material processing, Prof. Dr. med. Behler 2003, Second International WLT Conference on Lasers in Manufacturing June 2003, Munich.
• • Hollow Silica Waveguides from Polymicro Products; high-power laser fibers, CeramOptec GmbH 2003, data sheet PT-HSW / 12-02, http://www.Polymicro.com.
• • Lincoln laser high-speed scanner Laser products: Lincoln Laser, Phoenix USA
• • Ligo Laboratory G030270-00-D: suspension with quadruple beam splitter. Edmund Optics: multiple beam splitter, http://www.edmundoptics.de
• • Laserline GmbH: beam switches / beam splitters for diode lasers, http://www.laserline.de
• • Omicron Laserage: Laser effects with multiple beam splitters, http://www.laserage.de
• • Spekle measuring technology at the chair of measuring system / sensor technology, http://zeus.eikon.de
• • A new slab laser concept enables improved beam properties, Keming Du, Edge Wave GmbH 2003, IPL-Aachen.
• • Path of the laser beam from the laser device to the workpiece 2003, Trumpf GmbH.
• • Press release Perfolite, high-end Perfolas, 2001-2003, Rofin Baasel Lasertech GmbH.
• • Laser perforation with MLP-10 and MLP-50, MLT-Micro Laser Technology GmbH.

One essential aspect of the laser perforation is in the limitation the hole sequences at 100,000 to about 400,000 holes per second, the supplied optical Beam power of a laser beam of currently about 2000 watts at Offline and about 300 watts for online laser perforation systems with high-revving Polygon or rotating mirrors to see, otherwise the individual energies for each produced laser hole in the material web is no longer sufficient. This is possible Easily determine according to the given list.

Furthermore, from the patent DE 29.18.282 A1 . DE 195.11.393 A1 . FR 21.30.698 A1 . US 41.18.619 A and PCT WO-99/58006 A1 and from the practical procedures of laser perforation systems on the market that an automated and completely automatic adjustment of the laser line positioning and focusing on the material web is completely impossible, because on the one hand the optical single beam channels not motorized and / / or no geometric perforation and optical porosity detection after the perforation section, and on the other hand on-line optical porosity measurement systems, such as those in the same Applicant's DE 102.51.610 A1 described, are not present. And this for systems with up to 32 individual optical channels.

Therefore is therefore easy to see that a manual setting of Geometries of all single beam channels extraordinarily laboriously, time-consuming and later a later check during the current Perforation almost entirely impossible is, so that deviations in the laser line position as well as in the hole quality individual rows of holes and associated porosity deviation, e.g. triggered due to contamination on the laser heads, influences of the exhaust air and dirt the deflection rollers on the focusing, low web edge offset and the same more, until the end of the produced Bobiene and can be seen to stop the machine.

Also are in production practice associated with changes in hole qualities Porositätsabweichungen while The current perforation can not be compensated directly, as almost all of them Process the optical laser power as a beam source very constant hold, but after the beam splitting and focusing no impact possibilities on the change the intensity the optical single beam channels consist.

Consequently are hole quality and Perforationsprofilkontrollen and the subsequent control loop to trend updates for the Perforation system simultaneously not possible, what with the high level of automation the production equipment is disadvantageous is. This applies in particular for an automated, fast setup and adjusting the perforation heads over the Web width in terms of positioning and initial porosity, e.g. for motorized sub / upper blade positioning of slitter winder systems is known.

In conclusion, be yet mentioned that almost all offline laser perforation and commercially available laser perforation systems Bobiene for Bobiene ennoble, which means in practice, that after each bobien cut of 3000 or 4000 meters in length the machine is stopped, bobbins exchanged and then the Machine is put back into production. This Start-stop operation not only reduces the overall efficiency of the Plant but generated by the acceleration and braking phases also a not inconsiderable percentage of scrap material in the Magnitude from 4-8 %.

Therefore is easy to see that at very high web speeds up to 600 m / min and upgraded Laser and perforation services the stop phases for replacement the finished and to prepare the new Bobienen be up to 5 minutes can, what causes, that with 3000 meters long Bobienen the idle time between 30-50% amounts to can.

Therefore The invention is based on the object, the disadvantages indicated the prior art methods and devices and to hereby provide a technical solution with which a significantly higher Number of laser beam channels, and this from 40 to 120 individual channels and more at web widths up to 2000 mm, possible are.

The inventive method and apparatus for laser perforation of wide webs is by the features of the method according to claim 1 or by the Characteristics of the device according to claim 16 solved.

The solution is that with a high-power laser multiplexer, in whose center is a rotating, cubic beam splitter, the supplied Laser beam in a full 360 degree angle in two or four beams on their side surfaces shared exit and with a high number of optical entrance channels with coupled fibers is directed. The ends of all fibers are with Provide collimating and focusing optics as microperforation heads and can by their flexibility and spatial Degree of freedom in an ideal way and with those in the market motor positioning systems, such as e.g. on slitter cutters related, in the continuous web with the laser perforation arbitrary places and as required the perforation grid, provided. Thus, in this invention the very expensive used in the previous art, optical Deflection and mechanically high-quality guide elements completely avoided.

One Another advantage of the invention results from the fact that with the cubic Beam splitter by the double or quad laser beam splitting whose rotation frequency is by a factor of 2 or by a factor of 4, compared to only a circulating and previously deflected laser beam reduces what the exposure time, so the laser dwell time on each one optical channel, extended and so the energy ratios mentioned above at 120 and more single optical channels comply.

According to the invention is recognized and been confirmed by a variety of investigations and practical tests, that only with a circular arrangement a high-power laser multiplexer the high number of optical Single channels from e.g. 80, 120 or more, possible are, as yet with the Polygonstrahlauffächerungs- and Wellenbogentechnik up to a maximum of 32 individual channels with beam deflections of a laser power beam of smaller 90 degrees is practiced.

Of Furthermore, it is technologically and production-wise a big advantage that with the double or quadruple beam splitter the circular encircling Laser beams are operated with very high optical powers can, which is an elementary prerequisite for the necessary laser energy Per perforation hole of 2.0-4 mJ is in the material web.

Furthermore are dual laser beam outputs as laser sources, each with 2 x 500 watts or 2 x 2000 watts optical power, available, what the feed on the inventive device with up to 120 or more optical single channels clearly simplified.

An alternative for the use of special optical fibers and their Laserstrahlweiterführung from the high-power laser multiplexer to the perforation of the web consists of motorized deflection mirrors and the adjoining in a vertical plane focusing units and microperforation heads. Here, the circular Laserstrahlauffächerung the high-power laser multiplexer is structurally designed so that their Overall diameter is smaller or larger than the web width and the device above or below the continuous web comes to the arrangement. With the geometric adjustment of the deflection of all individual beam channels relative to the center of the beam feed, and the resulting skew relative to the transverse continuous material web, the laser perforation lines can be generated at the desired positions. Since the beamlines of each individual channel change only in length, the focus or beam divergence properties remain untouched in the first approximation so that the beam quality factor indicated above is preserved. And this taking into account the very close and / or further positioned laser line, for example, 1.0 mm and 40 mm, depending on the Bobienenbreite and screening. By a slight inclination of the overall arrangement relative to the material web overlaps in the 90 and 180 degrees range of the individual channels are avoided.

Further Alternatives to the rotating, cubic beam splitter in the center The high performance laser multiplexer can be characterized by the use of rotating deflecting elements or even polygons with inclined facets indicate which then the or the two supplied laser beams in 360 degrees Rotate full circle at high speed. In the inner circle of the high-power laser multiplexer is then the same circulating laser beam coupled into each single optical channel.

A Special feature here is the alternative with the high-rotating Polygon wheel and inclined facets, e.g. six facets, dar. The quadruple and non-pulsed laser beam delivery and associated jet spread in the range of 4 x 2 x 45 degrees the associated circular sections of e.g. 4 · 30 single channels offers a good process engineering and technological realization of the beginning basic requirement.

By the inclination of the polygon surfaces can be e.g. four laser beams obliquely incident from above respectively, without a gap for steel covering the aforementioned pitch circle sections of e.g. 4 · 2 · 45 degrees in the full circle of the high-performance multiplexer in horizontal and equal Level to the individual optical channels arises.

Further Process and device advantages of this invention will become apparent from the relatively simple laser beam guidance with conventional, optical components, the absolute identity of all individual channels, the compact design all deflection and perforation heads, their mechanical-motor linear units very inexpensive to purchase are.

Of Another is to emphasize that the technological and mechanical Effort for beam guidance and generating a high number of individual optical channels with the inventive, circular High-power laser multiplexer is significantly lower than this conventional fixed beamlines would be feasible with significantly smaller, single optical channels. In order to are the technological realization and the investment effort for up to 120 or more individual optical channels and wide webs up to 2000 mm practically become feasible.

Another not to be underestimated advantage of the inventive solution is that the above-mentioned geometric perforation and optical porosity detection, for example, as in the DE 102.51.610 A1 described, can be used and through the functional feedback all laser beam guides and associated Perforationslochlinien are automated transversely to the web and accurately positioned. As well as their porosities and hole qualities of each row of holes or row of holes to capture and on the motor focus of the inventive devices in certain areas, without deteriorating their hole qualities, adjust, so as to keep the essential product sizes in the laser perforation largely constant.

below some calculations, which are exemplified for tipping paper webs, what a comparability with the initially established requirements allowed. As can be seen from the results, this becomes more advantageous Way fulfilled, what practical tests of the first technological industrial designs approved to have. equally can be further calculation examples with other physical Conditions for derive other material web types from it.

• • bei A = 20 Löcher pro cm perforierter Lochlinie und Bahngeschwindigkeiten von 120 m/min: (120 m/min/60Sek./min)·100 cm·20 Löcher/cm = 4000 Löcher pro Sekunde pro cm – pro Einzellochreihe
• • bei 120 Einzelkanälen: 120·4000 Löcher/Sekunde = 480.000 Löcher pro Sekunde
• • bei B = 20 Löcher pro cm perforierter Lochlinie und Bahngeschwindigkeiten von 300 m/min: (300 m/min/60Sek./min)·100 cm·20 Löcher/cm = 10.000 Löcher pro Sekunde pro cm – pro Einzellochreihe
• • bei 120 Einzelkanälen: 120·10.000 Löcher/Sekunde = 1.200.000 Löcher pro Sekunde

For the hole repetition rate of each row of holes and in total for all:

• • at A = 20 holes per cm perforated hole line and web speeds of 120 m / min: (120 m / min / 60 sec / min) x 100 cm x 20 holes / cm = 4000 holes per sec per cm - per single hole row
• • 120 individual channels: 120 x 4000 holes / second = 480,000 holes per second
• At B = 20 holes per cm perforated hole line and web speeds of 300 m / min: (300 m / min / 60 sec / min) × 100 cm × 20 holes / cm = 10,000 holes per second / cm - per single hole row
• • 120 individual channels: 120 · 10,000 holes / second = 1,200,000 holes per second

• • bei A = 4000 L/Sek/4 = 1000 U/Sek.

For rotation of the beam part or inclined polygon, the following applies:
For the quadruple beam splitter, a rotation of:

• • at A = 4000 L / sec / 4 = 1000 U / sec.

• • bei A = 4.000 L/Sek./6/4 = 166.66 U/Sek.
• • bei B = 10.000 L/Sek./6/4 = 416.66 U/Sek.

For the polygon with 6 facets and four laser beams:

• • at A = 4,000 L / sec. / 6/4 = 166.66 U / sec.
• • at B = 10,000 L / s / 6/4 = 416.66 U / s.

• • bei A = 1000 U/Sek. und 120 Einzelkanälen: 1/1000 Sek./(120/4) = 33.2 μs abzüglich der Zeit für das Ein- und Austauchen des Laserstrahles in die volle optische Öffnungsweite des Eintrittkanals mit ca. 40 % = ca. 20 μs
• • bei A = 4000 Löcher/Sek. und 3.5 mJ/Loch = 4000·3.5 mJ·30 = 420 Watt

Calculation of time and laser energy per fed or split beam:
For the quad beam splitter theoretically calculated:

• • at A = 1000 U / sec. and 120 individual channels: 1/1000 sec./(120/4) = 33.2 μs minus the time for the laser beam to enter and exit the full optical aperture of the inlet channel with approx. 40% = approx. 20 μs
• • at A = 4000 holes / sec. and 3.5 mJ / hole = 4000 x 3.5 mJ x 30 = 420 watts

• • bei A = 1000 U/Sek. und 120 Einzelkanälen: 1/1000 Sek./(120/4/6) = 200 μs abzüglich der Zeit für das Ein- und Austauchen des Laserstrahles in die volle optische Öffnungsweite des Eintrittkanals mit ca. 40 % = ca. 120 μs
• • bei A = 4.000 Löcher/Sek. und 3.5 mJ/Loch = 4000·3.5 mJ·30 = 420 Watt pro Laserleistungsstrahl – bei 4 Strahlen = 1680 gesamte Laserleistung
• • bei B = 10.000 Löcher/Sek. und 3.5 mJ/Loch = 10.000·3.5 mJ·30 = 1050 Watt pro Laserleistungsstrahl – bei 4 Strahlen = 4200 Watt gesamte Laserleistung

For inclined polygon with 6 facets is theoretically calculated:

• • at A = 1000 U / sec. and 120 individual channels: 1/1000 sec./(120/4/6) = 200 μs minus the time for the laser beam to enter and exit the full optical aperture of the inlet channel with approx. 40% = approx. 120 μs
• • at A = 4,000 holes / sec. and 3.5 mJ / hole = 4000 x 3.5 mJ x 30 = 420 watts per laser power beam - at 4 beams = 1680 total laser power
• • at B = 10,000 holes / sec. and 3.5 mJ / hole = 10,000 x 3.5 mJ x 30 = 1050 watts per laser power beam - at 4 beams = 4200 watts total laser power

As from the simple, theoretical calculation examples is, the essential physical quantities move in the initially listed magnitudes, which has been further confirmed in practice.

It are now different ways to advantageously design the teaching of the present invention to further educate and indicate. On the one hand on the one hand in the claims 1-20 described designs, and on the other hand, to the following explanations of several embodiments to refer to the invention with reference to the drawings 1-15.

In Connection with the explanation the preferred embodiments The invention and the drawings are also in general preferred embodiments and developments of the teaching explained. This especially for Material webs such as tipping papers as well as packaging webs of any kind and design.

in this connection show the drawings in detail:

1 : The schematic plan view of the high-power laser multiplexer with the supply of a laser beam and rotating deflection for 80 individual optical channels and fiber extraction on the underlying material web

2 : the schematic side view of the in 1 illustrated, inventive high performance laser multiplexer with laser beam feed and single fiber decoupling

3 : the side view of the fiber extraction with the perforation head over the material web

4 : Top view on the material track with laser rows after 1

5 : The schematic plan view of the high-power laser multiplexer with the supply of a laser beam, the rotating deflecting element, 80 individual optical channels and the motorized Strahlumlenkungs- and focusing on the underlying material web

6 : a side view too 5

7 : a side view of the 5 with laser beam supply, the rotating cubic beam splitter and the motorized beam deflection and focusing on the underlying material web

8th : A schematic plan view of the high-power laser multiplexer, the rotation of four laser beams after their division by the rotating cubic beam splitter, 80 individual optical channels, motorized beam deflection and focusing and the underlying material web

9 : a side view of the 8th , but with fourfold laser beam feed, a rotating polygon wheel with inclined facets, the single beam deflection by the motorized beam deflection and focusing devices and the underlying material web

10 : A plan view of the material web with the laser rows of holes behind 8th

11 : A plan view of the material web with the laser rows of holes behind 8th and further hole row details

12 : a top view of the material web with the laser rows of holes 8th and further hole row details

13 : the general view of the wide web laser perforation machine

14 : the side view of the broad-web laser perforation machine

15 : the overall view of the fiber coupled perforation section

1 shows the schematic plan view of the 360 degree device as a high performance optical laser multiplexer ( 2 ) with the laser beam supply ( 3 ) for the laser main beam and rotating deflecting element ( 4 ), which from the high-speed engine ( 9 ) is operated. The orbiting laser beam ( 5 ) with direction indication ( 6 ) sweeps over the 80 individual optical channels shown here for each full 360 degree turn ( 7 . 8th ) with its optical inlet opening with superior cylindrical lens ( 10 ). The entrance lenses ( 10 ), their indication ( 7 . 8th ) simultaneously define the first and last optical channel, focus the respectively entering laser beam on the fiber coupling ( 12 ). The decoupling takes place via the CO ₂ waveguide fiber ( 13 ). Below the high-power laser multiplexer is the continuous material web ( 1 ), with the feed direction ( 14 ).

Diameter and spatial arrangement of the high performance laser multiplexer ( 2 ) are completely independent of the material web width and only determined by the geometric dimensions and optical element arrangements. In this example, the arrangement takes place directly over the material web ( 1 ), in the 13 eg directly at the CO-2 laser source output.

In continuation of this view shows 2 the side view with the laser beam supply ( 3 ) and the laser beam feed direction ( 15 ). About the fixed beam deflecting mirror ( 16 ) the laser main beam reaches the focusing lens ( 17 ), which is usually water-cooled due to the high energy density, with a beam diameter of up to a size of about 200 microns diameter on the highly rotating deflection ( 4 ) is projected, and thus deflected by 90 degrees and in the full circle angle of 360 degrees through the direction of rotation ( 6 ) on the cylindrical lenses ( 10 ) to the respective focusing lens ( 11 ) then to the fiber input ( 12 ). The high-rotating deflection element ( 4 ) may be formed as a plane mirror or as a parabolic mirror, and includes in its holder a mechanically precise balancing to compensate for the high centrifugal forces.

Further require optical details At this point, no further explanation, as in the beginning mentioned patent specifications in detail are explained.

Each with the laser beam ( 3 ) acted upon CO-2 waveguide fiber ( 13 ), with eg 50 or 200 μm inner core diameter, is the way to 3 executed. At the end is the collimator optics ( 19 ) and with the motorically adjustable focusing optics ( 20 ) arranged and designed as a micro perforation, so that a very fine focusing for hole sizes of 50-200 microns in diameter in the feed direction ( 14 ) continuous material web ( 1 ) can take place. These focusing optics ( 20 ) are also referred to as microperforation heads, and are, as described in detail above, distributed over the web width in two rows, motorized and automatically positioned and thus generate the respective laser rows of holes.

Under 4 is a plan view of the material web ( 1 ) and their ( 14 ). For exact web guidance serve the two guide rollers ( 22 ). It should also be stated that the collimator optics ( 19 ) and thus formed perforation heads whose mechanical supports and motorized transverse adjustments of simplicity at this point are not shown, since the Perforationsentstehung on the material web ( 1 ) in the other 10 . 11 and 12 he follows.

These can be split in two rows in the Y plane or arranged in two rows in the Y plane. As an example of the rows of holes produced in this procedure and sequence are with ( 23 . 24 . 25 . 26 . 27 . 28 ). The not further designated collimator optics and thus formed perforation pots for the rows of holes ( 24 . 25 . 26 . 27 . 28 ) are with the under ( 19 ) equivalent.

In 5 forms the high performance laser multiplexer ( 2 ) the starting base with the material web passing through underneath ( 1 ) and their feed direction ( 14 ). With the high-speed engine ( 9 ) driven, optical deflecting element ( 4 ) the laser beam ( 5 ) and illuminates each of the 80 individual optical channels shown on each full cycle. In contrast to the previously mentioned embodiments, here motor-adjustable beam deflection and focusing devices ( 30 ) are used for each individual optical channel with which by the direction of movement and oblique adjustment ( 32 ) and the resulting adjustment angle ( 33 ) occurs with respect to the X- and Y-axis and thus the positions of each individual laser hole row, and this completely independently of each other, are possible in certain distance ranges. Each perforation head ( 31 ) is directly in the direction perpendicular to the material web ( 1 arranged what is in 6 is illustrated.

The identifier for the first optical channel ( 7 ) and the last round in a full circle optical channel ( 8th ) are registered here. The generated laser hole lines are subject to the same name ( 23 . 24 . 25 . 26 . 27 . 28 ), wherein the necessary spatial offset of the individual perforation heads to closely adjacent rows of laser holes is clearly highlighted.

Basically, the full circle arrangement of the high power laser multiplexer ( 2 ) and the single or multiple beam deflections, which are not specified in the drawing examples, constructively chosen so that both the overall diameter smaller but larger than the material web width and above and below the material web ( 1 ) can be arranged so as to obtain optimal position shifts and geometries for the laser rows of holes.

Furthermore, the execution options of the high-power laser beam multiplexer ( 2 ) also be understood that by multiple individual beam deflections, starting from the beam deflection center and also outside the web width, the individual beams are optically traced back to the web width which ultimately a direct parallel displacement in the X direction relative to the passing in the Y direction web ( 1 ) allowed.

This has the big one Advantage that no long displacement movements, as with the oblique adjustment and changes of the angle in the X-axis is the case, and so a direct. Comparability in the positioning of the perforation hole rows on any part of the material web with extremely short displacement is given, as with previous offline laser performance equipment for narrow Rail widths with up to four bobbies is practiced.

In addition, it should be mentioned that the structural unit of the high-power laser beam multiplexer ( 2 ) has an extremely high mechanical stability and is designed in the precision, as is known from conventional CO2 power beam guides.

In connection to 5 is their side view with details below 6 illustrated. In the manner already described several times, the laser beam supplied from above carries out the circulation movement via the rotating optical deflection element (FIG. 4 ) and the high-speed engine ( 9 ) in the direction of rotation ( 6 ) out. The cylindrical lens ( 29 ) and the motorized beam deflection and focussing unit ( 30 ) with the fixed beam deflecting mirror ( 16 ) guides the circulating laser beam ( 34 ) deflected vertically downwards ( 35 ) on the motorically adjustable focusing optics ( 20 ) with focus on the laser hole line on the web ( 1 ), with feed direction ( 14 ), arises.

In the execution under 7 is a rotating cubic beam splitter ( 36 ) with the beam feed direction ( 15 ) from above, instead of the rotating optical deflecting element ( 4 ). Again, the drive via the high-speed motor ( 9 ). The high-rotating beam splitter ( 36 ) has the basic shape of a cube with the beam entrance ( 38 ) from below and / or above and thus a quadruple partial beam exit ( 39 ) at their side edges at the bottom and top, and two times in only one Zuführungsweise, with almost identical performance and beam quality characteristics. The variants are not specified here at this point, whereby instead of the cubic double and quadruple beam splitters ( 36 ) Quadruple parabolic levels are possible.

As in 6 explained, follow the two or four rotating partial beams ( 37 ) in each single optical channel the way to the cylindrical lenses ( 29 ), movable ( 32 ) Beam deflection mirrors ( 6 ) and as deflected partial beam ( 35 ) in the vertical direction to each perforation head ( 31 ) and the adapted, motorized focusing optics ( 20 ). With the focused laser beam ( 21 ), the desired rows of laser holes are formed in the material web ( 1 ) in whose ( 14 ).

For a better understanding of the rotating, fourfold laser partial beams ( 37 . 40 . 41 . 42 ) to 7 is this in 8th a top view of the high power laser beam multiplexer ( 2 ). The rotating cubic beam splitter ( 36 ) generates the four partial beams A-1 ( 37 ) and A-2 ( 41 ) from the laser main beam A analogous to this B-1 ( 40 ) and B-2 ( 42 ) from the main laser beam B simultaneously, so that the optical beam paths ( 7 . 8th ) with the cylindrical lenses ( 29 ) at the beam entrance to each 360 degree revolution in the direction of rotation ( 6 ) and time by a factor of four faster compared to the rotating optical deflection element ( 4 ). This has the advantages already described with respect to the desired high hole repetition frequency for each single optical channel, from the first ( 7 ) to the last ( 8th ), and the resulting laser hole lines ( 23 . 24 . 25 . 26 . 27 . 28 ). The material web ( 1 ) is also in this case in the feed direction ( 14 ). For positioning the beam deflecting and focusing device 30 and the diameter of the high power laser beam multiplexer ( 2 ) is based on the remarks of the 5 directed.

Another embodiment is in 9 as a side view of the beam rotation with a polygon wheel and inclined facets ( 43 ), which is also from the high-speed engine ( 9 ) is driven.

The polygon wheel ( 43 ) preferably has six facets with, for example, four simultaneously deflecting laser beams four beam deflections over a fanning range of four times 90 degrees to the full angle of 360 degrees to supply all optical single channels ( 7 . 8th ) arise.

The obliquely from above, eg at an angle of 30 degrees, incident and pre-focused laser beam ( 44 ) is preferably used with a water-cooled focusing lens ( 17 ) to a very small diameter, eg in the range of 50 to 200 μm, on the rotating polygon ( 43 ) and hits in the defined angular range with the unguided rotating laser beam ( 45 ) the individual optical channels with their cylindrical lenses ( 29 ) at the optical inlet. The beam transmission within each individual optical channel takes place in the manner described several times via fixed beam deflection mirrors (US Pat. 16 ) motor-adjustable Strahlumlenk- and focusing device ( 30 ) whose direction of movement ( 32 ) is shown. This is the order of the guided laser beam ( 35 ) on the motorized adjustable focusing optics ( 20 ) and the perforation head ( 31 ).

The oblique feed, this can be done from above or below, the pre-focused laser beam ( 44 ) on the rotating polygon with inclined facets ( 43 ) located in the center of the high power laser beam multiplexer ( 2 ) has the advantage already mentioned that no spatial Aussparrungen or omissions in Hochleistungslaserstrahlmultiplexers ( 2 ) and this inner circle and completely self-contained, circulating with the individual optical channels ( 7 . 8th ) can be fitted.

Over the fanning range of eg four times 90 degrees or other constellations to the full angle of 360 degrees and for the supply of all single optical channels ( 7 . 8th ) are optical laser power of 4 · 500 watts or 4 · 1000 watts used, which is easily implemented with current CO2 laser sources. With this solution, even extremely high perforation performance and associated porosities can be achieved up to 1000 CU per row of holes, feed rates of the material webs ( 1 ) to 300 m / min and hole frequencies up to 2,000,000 holes per second.

Explained afterwards 10 a corresponding division of the individual laser rows of holes over the web width, as already in 4 first executed. The material web ( 1 ) is via two guide rollers ( 22 ) very precise in the feed direction ( 14 ) and includes the example of the collimator optics ( 19 ) generated laser hole series ( 23 ). The other collimator optics offset in the Y-axis ( 19 ) and associated perforation heads ( 31 ) generate the laser rows of holes ( 24 . 47 . 48 . 49 . 50 ). This example is well transferable to the laser perforation of packaging webs.

An enlarged view of the laser hole row arrangement on the material web ( 1 ), as exemplified for tipping paper in 11 is specified. Clearly the here indicated laser hole rows ( 23 . 24 . 25 . 26 . 27 . 28 ) as well as the laser hole rows ( 51 . 52 . 53 . 54 ) in the respective section distributed over the web width to recognize. The intended bobble sections ( 55 . 56 . 57 ) are marked accordingly and will be shared in the later slitting process. Of course, in the feed direction ( 14 ) of the material web ( 1 ) in this example, one selected double perforation row row group per bob side.

In the further enlargement of the 12 This arrangement can be found again, with two additional print strips ( 61 ) and the later cut edges ( 62 ) of each individual bobbie, on each 55 . 56 ). To illustrate the diameter of each laser perforation hole ( 59 ), which move in the size range of 50-200 μm but change only slightly during the laser perforation, their distances are ( 60 ) of each row of holes in ( 14 ).

The final drawings of the 13 - 15 provide an overall view and practical embodiments of the inventive Breitbahn laser perforation system.

After that shows 13 the overall view of the broad web laser perforation system with the unwinding device ( 63 ), centrally inserted perforation section and mechanical device ( 69 ), the subsequent optical online porosity measuring system ( 68 ) and the roll-up device ( 64 ). The material web ( 1 ) rolls in the specified feed direction ( 14 ). The common or individual CO-2 laser sources ( 66 ) lead in this example via two beam feeds ( 3 ) the two high-power laser beam multiplexers ( 2 ) to the laser beam, the example here and for beam guiding reasons not on the material web ( 1 ) but directly after the laser source ( 66 ) are positioned. All individual fibers ( 13 ) are easy to install the motorized focusing optics ( 20 ) can be fed.

The spatial distance between both high power laser beam multiplexers ( 2 ) and the perforation section can be up to five meters, as is known, for example, industrial CO2 power laser systems for welding, joining, cutting, finishing and other material processing, what the other benefits, especially the ho flexibility and integration of the laser beam fibers ( 13 ) on both motorized positioning devices ( 67 ) of each perforation head ( 31 ) within the perforation section ( 69 ), in the innovative achievements particularly emphasizes.

14 gives an impression of the entire Breitbahnlaserperforationsmaschine in the side view. Clearly here are the two guide rollers ( 22 ) and the motorically adjustable focusing optics ( 20 ) to recognize.

Another section shows the final 15 the entire perforation section ( 69 ) and ( 14 ) of the material web ( 1 ). In this view, the two motorized positioning devices ( 69 ), with recording of the individual perforation heads ( 31 ), whose fiber feed ( 13 ) shown enlarged. All further details need no further explanation.

Basically still to add that in all embodiments described here by way of example the supplied Laser power beams in continuous operation, so not pulsed, but also in time and in dependence from the rotations of the beam redirecting or beam splitting components and beam positions triggered in front of the inlet ports of the individual channels, can be pulsed.

To the Conclusion is emphasized that the inventive Teaching through the many embodiments merely explained but not restricted is. Rather lets the teaching of the invention also further process steps and device variants for laser perforation from wide webs, the other or more constructive features exhibit.

1

continuous, wide web

2

High-power laser Multiplexer

3

laser beam delivery

4

rotating optical deflecting element

5

diverted and rotating laser beam

6

direction of rotation

7

first optical channel

8th

last optical channel

9

high-speed Motor device for high speeds

10

cylindrical lens for the beam entrance

11

focusing lens

12

fiber coupling

13

CO2 waveguide fiber

14

Web direction

15

feed direction of the laser beam

16

solid Strahlumlenkspiegel

17

focusing lens zero

18

focused laser beam

19

collimator optics at the hollow fiber end

20

motor adjustable focusing optics

21

focused laser beam on the web ( 1 )

22

deflection rollers

23

generated Laser perforation series 1

24

generated Laser perforation series 2

25

generated Laser perforation series 3

26

generated Laser perforation series 4

27

generated Laser perforation series 5

28

generated Laser perforation series 6

29

cylindrical lens for the beam entrance

30

motor adjustable beam deflection and focusing device

31

Perforation head - referred to after Strahlendfokussierung to the web ( 1 )

32

Direction of movement and oblique adjustment of the beam deflection unit 30

33

Adjusting angle of the beam deflecting unit to the web running direction ( 14 )

34

of the Beam deflection unit supplied laser beam

35

around steered laser beam

36

rotating cubic beam splitter for two or fourfold laser beam division

37

Circumferential partial beam A-1 of beam feed A - here from feed direction ( 15 )

38

Laser beam entrance - from above designated as A - in the rotating cubic

Beam splitter ( 36 )

39

Partial beam exit - here only drawn as A-1

40

rotating Partial beam B-1 from the laser beam supply B

41

rotating Partial beam A-2 from the laser beam supply A.

42

rotating Partial beam B-2 from the laser beam supply B

43

rotating Polygon with inclined facets

44

Prefocused laser beam

45

from Polygon around steered and rotating laser beam

46

Oblique incidence direction of the laser beam

47

via an optical channel and associated perforation head ( 31 ) generated

Laser perforation hole row 3 on the web ( 1 )

48

via an optical channel and associated perforation head ( 31 ) generated

Laser perforation hole row 4 on the web ( 1 )

49

via an optical channel and associated perforation head ( 31 ) generated

Laser perforation hole row 5 on the web ( 1 )

50

via an optical channel and associated perforation head ( 31 ) generated

Laser perforation hole row 6 on the web ( 1 )

51

via an optical channel and associated perforation head ( 31 ) generated

Laser perforation hole row 7 on the web ( 1 )

52

via an optical channel and associated perforation head ( 31 ) generated

Laser perforation hole row 8 on the web ( 1 )

53

via an optical channel and associated perforation head ( 31 ) generated

Laser perforation hole row 9 on the web ( 1 )

54

via an optical channel and associated perforation head ( 31 ) generated

Laser perforation hole row 10 on the web ( 1 )

55

later Bobie section 1

56

later Bobie section 2

57

later Bobie section 3

58

Not named

59

With single perforation hole generated by the laser beam

60

Distance of the individual perforation holes in the direction of web travel ( 14 )

61

Printing strips on the web ( 1 )

62

later cutting edge for splitting the wide web ( 1 ) into individual bobies

63

unrolling

64

retractor

65

Web roll

66

CO-2 laser sources

67

motor adjustable device for positioning each one

Perforation head ( 31 ) over the entire width of the web ( 1 )

68

optical online porosity measuring system

69

Perforationssektion and their mechanical device

Claims (20)

Method for laser perforation of wide webs ( 1 ), such as for cigarettes, tipping or coffee filter papers, filter wrapping papers, so-called plug-wraps, security papers, holographically printed, foil-pressed, coated or metallized paper or packaging or plastic sheets such as BOPP, LDPE, HDPE or spin nonwovens with visible or invisible laser beams. their rows of holes ( 23 ) substantially parallel to the transport direction ( 14 ) of the web ( 1 ) are formed, characterized in that by a continuous circular circulation movement one or more laser beams ( 5 ) from above and / or below the rotating, cubic beam splitter ( 36 ) and are deflected to the horizontal plane, so that all in the outer circle of the optical high-performance laser multiplexer ( 2 ) circumferential, individual optical channels ( 7 . 8th ) of one or more rotating laser beams ( 37 . 40 . 41 . 42 ) via the inlet cylinder lenses ( 29 ) are supplied within a certain time window, which is the same for all individual channels, so that at least 40 individual optical channels with minimal transmission losses of the beam power and beam quality are available. A method according to claim 1, characterized in that a laser beam supply ( 3 ) in the wavelength range of 10.4-10.8 microns centric from above and / or below in a fast rotating, cubic beam splitter element ( 36 ) takes place, and at the side surfaces temporally simultaneously at approximately the same power division, four partial beams ( 37 . 40 . 41 . 42 ) on four side surfaces or two partial beams ( 37 . 41 ) emerge on two side surfaces without significant losses in the divergence or beam quality and thus the rotational frequency of the beam splitter element ( 36 ) and their circulating laser partial beams ( 37 . 40 . 41 . 42 ) by a factor of four or two compared to only one laser beam guide within the high-power laser multiplexer ( 2 ) reduced. A method according to claim 1 and 2, characterized in that the temporally simultaneously from the rotating cubic beam splitter ( 36 ) emerging partial beams ( 37 . 40 . 41 . 42 ) by rotation ( 6 ) in the 360 degree full angle, the circumferential, individual optical channels ( 7 . 8th ) are sequentially supplied in the number of 40-200. A method according to claim 1, characterized in that instead of the cubic beam splitter ( 36 ) also an optical deflection element ( 4 ), as a single or quadruple parabolic mirror, the 360 ° full-circle beam deflection and rotation movement within the high-power laser multiplexer ( 2 ). A method according to claim 1, characterized in that the Strahlumlenk- and rotational movement polygons with inclined facets ( 43 ) are used, the degree of inclination and arrangement is chosen so that up to four laser beam feeds are possible, and this deflected ( 37 . 40 . 41 . 42 ) each with two or four circular sections of 180 or 90 degrees within the high-power laser multiplexer ( 2 ) of the individual optical channels ( 7 . 8th ) serve. Method according to claim 1 or more of claims 2-5, characterized in that with the high-power laser multiplexer ( 2 ) and their direct positioning above and / or below the web ( 1 ) with the various star-shaped, motor-adjustable beam deflection and focusing devices ( 30 ) and fixedly mounted Strahlumlenkspiegeln ( 16 ) in their movement and movement away from the center of an oblique adjustment ( 33 ) parallel to the transport direction ( 14 ) arises, with which the laser rows of holes ( 23 . 24 . 25 . 26 . 27 . 28 ) in certain areas about the goods position web width. Method according to claim 1 or more of claims 2-6, characterized in that by a double-row division and assignment of the individual channels ( 7 . 8th ) both in the star-shaped, motor-adjustable Strahlumlenkung- and focusing ( 30 ) as well as in the case of waveguide fiber use ( 13 ) closely adjacent positions of the laser rows of holes ( 23 . 24 . 25 . 26 . 27 . 28 ) possible are. Method according to claim 1 or more of claims 2-7, characterized in that all individual optical channels ( 7 . 8th ) a motorically adjustable focusing optics ( 20 ) to the web, so the hole sizes ( 59 ) and porosities. Method according to claim 1 or more of claims 2-8, characterized in that waveguide fibers ( 13 ) instead of fixed beam guides the laser power beam in the optical high-power laser multiplexer ( 2 ), this flexible the perforation section ( 69 ) and their mechanical device, where it can be positioned by motor and each individual optical channel ( 7 . 8th ) at the end of the waveguide fiber a motor collimator optics ( 19 ) and focusing unit ( 20 ) to the web ( 1 ) as a feature. Method according to claim 1 or more of claims 2-9, characterized in that a beam focusing ( 18 ) in front of the highly rotating deflection element ( 4 ), the parabolic mirror or polygon with inclined facets ( 43 ) is provided in the diameter range of 50-500 microns. A method according to claim 1 or more of claims 2-10, characterized in that by a plurality, by the cubic beam splitter ( 36 ) and simultaneously circulating laser partial beams ( 37 . 40 . 41 . 42 ) or directly via a rotating deflecting element ( 4 ) supplied laser beams with high optical power in the range of 500-2000 watts up to 200 single optical channels ( 7 . 8th ), create hole sequences up to 2,000,000 holes per second and at the same time the required individual energies per perforation hole ( 59 ) in the range of 1.5-4.0 mJ. Method according to claim 1 or more of claims 2-11, characterized in that the hole sequences of each individual optical channel ( 7 . 8th ) by the rotational speed of the Strahlumlenk- ( 4 ) or beam splitting element ( 36 ) as well as the number of laser partial beams ( 37 . 40 . 41 . 42 ) are determined. Method according to claim 1 or more of claims 2-12, characterized in that the laser beam feed ( 3 ) unpulsed or depending on the current position of the rotating beam deflection ( 4 ) or beam splitting component ( 36 ) a respective trigger for laser beam pulsing takes place when the beam position is exactly in the center of the optical inlet opening of each individual channel ( 7 . 8th ) is located. Method according to claim 1 or more of claims 2-13, characterized in that an optical porosity measuring system ( 68 ) directly behind the perforation section and its mechanical device ( 69 ) and their measured values for the hole row positions, hole qualities and porosities of each hole row group on the laser perforation system and their individual channels ( 7 . 8th ) to automatically compensate for such changes occurring. Method according to claim 1 or more of claims 2-15, characterized in that the high power laser multiplexer unit ( 2 ) above and / or below the web ( 1 ) and whose outer diameter is smaller or larger than the web width of the web ( 1 ). Device for carrying out the method according to one or more of claims 2-15, characterized in that the high-power laser multiplexer unit ( 2 ) is constructed in the full circle of 360 degrees, in the center of which the laser beam feed ( 3 ), Beam deflection ( 5 ) or beam splitter component ( 4 . 36 ) and in whose beam circulation plane of the outer circle more than 40 individual optical channels ( 7 . 8th ), consisting of entrance and cylindrical lenses ( 10 ), are arranged circumferentially and completely. Device for carrying out the method according to claim 1 or more of claims 2-15, characterized in that the beam splitter as a rotating optical cube ( 36 ) is formed, in the center of which the laser beam ( 15 ) is supplied from above and below, inside the cube ( 36 ) is divided and deflected so that at the outer edges of the partial beams ( 37 . 40 . 41 . 42 ) emerge with the same optical power. Apparatus for carrying out the method according to claim 1 or more of claims 2-15, characterized in that in the center of the high power laser multiplexer unit ( 2 ) a rotating, optical deflection element ( 4 ) is arranged and consists of a single or multiple parabolic mirror with which the beam deflection ( 5 ) and rotation ( 6 ) is performed. Apparatus for carrying out the method according to claim 1 or more of claims 2-15 characterized in that in the center of the high power laser multiplexer unit ( 2 ) the rotating optical deflection element ( 4 ) a polygon wheel with 3-12 inclined facets ( 43 ) is so as to supply up to four laser beams at the same angle of incidence to the polygon wheel, in the rotation ( 6 ) then four equal circular sections of each 90 degrees to the beam fan and supply ( 37 . 40 . 41 . 42 ) of the individual optical channels ( 7 . 8th ) train. Device for carrying out the method according to claim 1 or more of claims 2-15, characterized in that the ends of each individual optical channel ( 7 . 8th ) and their waveguide fibers ( 13 ) made of attached collimator optics ( 19 ) and motorized focusing optics ( 20 ) consist.