EP1226038A1 - Method for producing an insulating material - Google Patents

Method for producing an insulating material

Info

Publication number
EP1226038A1
EP1226038A1 EP00954632A EP00954632A EP1226038A1 EP 1226038 A1 EP1226038 A1 EP 1226038A1 EP 00954632 A EP00954632 A EP 00954632A EP 00954632 A EP00954632 A EP 00954632A EP 1226038 A1 EP1226038 A1 EP 1226038A1
Authority
EP
European Patent Office
Prior art keywords
laser beam
insulating material
laser
foam
web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00954632A
Other languages
German (de)
French (fr)
Other versions
EP1226038B1 (en
Inventor
Peter Kesting
Werner Paulitschke
Gerd-Rüdiger Klose
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.)
Deutsche Rockwool Mineralwoll GmbH and Co OHG
Original Assignee
Deutsche Rockwool Mineralwoll GmbH and Co OHG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27213646&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1226038(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE10017269A external-priority patent/DE10017269B4/en
Application filed by Deutsche Rockwool Mineralwoll GmbH and Co OHG filed Critical Deutsche Rockwool Mineralwoll GmbH and Co OHG
Priority to SI200030143T priority Critical patent/SI1226038T1/en
Publication of EP1226038A1 publication Critical patent/EP1226038A1/en
Application granted granted Critical
Publication of EP1226038B1 publication Critical patent/EP1226038B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/262—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used recording or marking of inorganic surfaces or materials, e.g. glass, metal, or ceramics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/267—Marking of plastic artifacts, e.g. with laser

Definitions

  • the invention relates to a method for producing an insulating material, in particular from organic and / or inorganic fibers, for example from glass and / or ceramic fibers provided with or without organic and / or inorganic binders, heat-active constituents, preferably pigments, being added to the binders and / or from rigid plastic foam, such as expanded or extruded polystyrene, phenolic resin, polyurethane foam or polyisocyanorate foam, and / or from aerated concrete, mineral foam, foam glass, sintered glass, foamed water glass or similar partially discoloring and / or inflating melts, the color and / or shape of the insulation material being changeable by thermal energy, in which at least one marking as product designation and / or as a cutting aid is arranged on at least one surface, in particular a large surface.
  • organic and / or inorganic fibers for example from glass and / or ceramic fibers provided with or without organic and / or inorganic binders, heat-active
  • the production of insulation materials is known from the prior art, which can be designed, for example, in the form of a sheet or plate, in which a melt is produced from glass or stone and is fed to a defibration device.
  • the melt is defibrated into microfine fibers, which are then wetted with a binder and, if necessary, further impregnation agents.
  • the mineral fibers prepared in this way have a certain temperature in this state. Due to their temperature and especially their binders, the mineral fibers tend to stick together.
  • the mineral fibers are therefore placed on a conveyor, usually a conveyor belt, immediately after they have been wetted with at least binders.
  • the mineral fiber web formed in this way can then be further processed in different ways.
  • the mineral fiber web can be leveled after reaching a certain material thickness.
  • the mineral fiber web passes through compression devices, cutting devices, side edge trimming and at least one hardening oven to harden the binder.
  • the web-shaped mineral fiber web After leaving the hardening furnace, the web-shaped mineral fiber web is fed to a winding station or, alternatively, cut into individual plates, which are then fed to a packaging device and packed into commercially available packaging units.
  • the web-shaped insulating material for example the mineral fiber panels, hard foam panels or aerated concrete panels
  • markings are usually applied as color markings with the help of stencils and paint spray technology or with inkjet printers.
  • Color markings however, have the major disadvantage that they are the building material class, i.e. affect the flammability of the products.
  • electrically or gas-heated marking rollers are used, in particular in the case of mineral wool insulation materials which contain an organic binder, on the circumference of which marking images and texts are attached. These marking rollers are applied periodically or constantly to the mineral fiber web, so that the heated marking rollers cause the binder in the mineral fiber product to change color due to the temperature.
  • This process can be carried out discontinuously, as with stamping, or continuously, so that one can create a continuous lettering on the insulating material in such a way that the binder is discolored by the hot zones on the surface of the insulating material, and thus the lettering or the symbol can be seen on the surface.
  • the object of the invention is to create a method in which the marking and / or the division of an insulating material is possible in a simple and inexpensive manner, with complicated markings and / or cuts also being carried out with regard to their contours can be.
  • the solution to this problem provides that the insulation material is exposed to at least one laser beam with which the markings are introduced into the surface of the insulation material.
  • the method according to the invention is characterized in that the markings are introduced into the surface of the insulating material by means of a laser beam instead of the previous techniques.
  • the laser beam offers the essential advantage that it can be controlled, in particular steered, in a simple manner and can be adjusted to the actual conditions of the insulating material.
  • both fiber insulation materials made of organic fibers or inorganic fibers bound with organic binders for example glass fibers or insulation materials containing organic substances, insulation materials which are provided with organic coatings or, for example, have constituents which change their color and / or by thermal energy change their shape and hard foam insulation materials are processed, in which the marking is characterized by color changes and / or puffing up of the surface or partial sintering or melting of depressions in the surface.
  • all the insulating materials mentioned in the preamble of claim 1 can be processed with the method according to the invention.
  • the insulating material is fed to the laser beam in the form of a web in order to be able to maintain the continuous production of the insulating material.
  • the possibility of carrying out laser beam processing on previously produced insulating material elements, such as panels, pipe shells, segments or other shaped bodies, manual or automatic feeding of such molded parts into the laser beam processing device is possible here.
  • the insulating material, in particular the web is divided into sections, in particular panels, with the laser beam.
  • the insulation web is not only provided with markings, but that with the same device it is also possible to cut the insulation web into panels. This saves high investment costs when designing production lines.
  • a laser generating the laser beam is preferably moved in the longitudinal, transverse and / or distance direction and optionally in its angular position relative to the surface of the insulating material.
  • the laser beam is directed onto the insulation surface via a mirror that can be rotated in the three main axes and a lens system.
  • the mirror is driven by electrically driven servomotors, which receive their drive signals from a control unit.
  • the control unit itself is connected to an electronic data processing system (computer) in which data for certain marking arrangements and / or configurations are stored on the insulation materials. This data is used to control the laser beam with regard to its movements and / or its intensity.
  • the device generating the laser beam with the downstream optical devices can be moved in the three noise axes.
  • the laser beam is generated by a solid-state or gas laser device, preferably with the aid of a CO 2 laser.
  • the light output of the laser beam is set as a function of the size and the intensity of the material changes required, in particular for markings, via the optical devices.
  • the laser beam is preferably moved at different speeds relative to the surface of the insulating material. The relative speed is, for example, approximately 5 m / s.
  • the laser is moved at least in the conveying direction of the web at a speed greater than the conveying speed, preferably 5 m / s. This increased speed is necessary for extensive markings in the form of letters, numbers and / or pictograms in order to be able to introduce the entire marking over a certain distance of the material being conveyed.
  • the laser beam is moved in the conveying direction at a speed which corresponds to the conveying speed of the web, in order, for example, to be able to carry out a straight-line cut.
  • the movements and / or the power of the laser beam are controlled via a computer system, the input data of which are taken in particular from the production control.
  • a link between production control and The marking control or cutting control has the advantage that goods picked according to the customer's request can be produced in a simple and reliable manner.
  • a mineral wool web of a certain thickness and a certain bulk density removed from a hardening furnace is fed to a marking and cutting device.
  • the marking and cutting device has a CO 2 laser with variable output up to 1500 watts and a wavelength of approximately 1 to 12 ⁇ m, in particular 9 to 12 ⁇ m.
  • the laser beam is directed onto the mineral wool web via a mirror.
  • the laser generating the laser beam is mounted on a motor-operated double cross slide above a transport device on which the mineral wool web is conveyed, so that it can be moved in all axes.
  • the laser is pivotally mounted within the double cross slide, so that a laser beam generated by the laser can be applied to the surface of the mineral wool web at a certain angle, deviating from the perpendicular.
  • the laser beam can be deflected in the desired manner with the aid of electronically adjustable, optical devices such as lenses, lens systems, optically effective gratings or mirrors and thus guided over the surface to be marked.
  • the width and intensity of the marking can be changed by means of these optical auxiliary devices, as well as by varying the distance thereof from the surface to be marked, by changing the angle of inclination and the intensity of the laser beam.
  • the laser beam is set in a first step in such a way that it strikes the surface of the mineral wool web at right angles.
  • the double cross slide is connected to a computer that controls the movements of the double cross slide.
  • the data to control the movement of the double cross The computer receives a sled from an order management, in which the type and number of mineral wool slabs to be produced is entered.
  • the mineral wool web reaches the area of the marking and cutting device, the marking and cutting device being in its maximum position in the direction of the running mineral wool web. Immediately after reaching the marking and cutting device, these markings begin to be introduced into the surface of the mineral wool web. The marking and cutting device moves in the conveying direction of the mineral wool web. As soon as the markings are completely introduced, the marking and cutting device moves into a predetermined cutting area in order to shorten the previously marked mineral wool web by one plate length. The subsequent section of the mineral wool web is then marked and cut to length after completion of the marking.
  • the speed of travel of the laser is chosen so that it is significantly greater than the conveying speed.
  • the power of the laser is automatically set depending on the markings or the cutting process. For example, a power of 250 mW is set during the marking process, whereas the cutting process is carried out at a power of 1500 W.
  • the marking is carried out in such a way that the shape of a lettering or image is transferred to the insulating material using the laser with low energy.
  • the binder is discolored in the mineral wool insulation material in the narrow area by means of the laser energy, so that after the process the lettering on the mineral wool web can be read.
  • the laser energy is then increased in order to cut certain contours, which can also be straight cuts, perpendicular to the surface.
  • the energy of the laser is adjusted in such a way that the laser does not cut the mineral wool web completely, but only to a certain extent.
  • the edges of the mineral wool web can be partially or completely beveled or tilted to any shape by tilting the laser.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Laser Beam Processing (AREA)
  • Glass Compositions (AREA)
  • Insulating Bodies (AREA)
  • Organic Insulating Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Inorganic Insulating Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Laminated Bodies (AREA)
  • Thermal Insulation (AREA)

Abstract

The invention relates to a method for producing an insulating material, preferably a mineral fibre product, especially in the form of webs or boards. After being moistened with binders, the mineral fibres are placed in webs on a conveyor system. The invention is designed to create a process whereby marking and/or division of an insulating webs is carried out in a simpler and economically more affordable manner, whereby in view of their contours, complex markings and cuts can be carried out. To that effect, at least one laser beam is impinged on the insulating sheets so that the outer surfaces of the sheets are marked.

Description

Verfahren zur Herstellung eines Dämmstoffes Process for the production of an insulating material
Die Erfindung betrifft ein Verfahren zur Herstellung eines Dämmstoffes, insbeson- dere aus organischen und/oder anorganischen Fasern, beispielsweise aus mit oder ohne organischen und/oder anorganischen Bindemitteln versehenen Glas- und/oder Keramikfasern, wobei den Bindemitteln hitzeaktive Bestandteile, vorzugsweise Pigmente, beigefügt werden, und/oder aus Kunststoff-Hartschaum, wie beispielsweise expandiertem oder extrudiertem Polystyrol, Phenolharz, Poly- urethanschaum oder Polyisocyanoratschaum, und/oder aus Porenbeton, Mineralschaum, Schaumglas, Sinterglas, aufgeschäumten Wasserglas oder ähnlichen sich partiell verfärbenden und/oder aufblähenden Schmelzen, wobei der Dämmstoff durch Wärmeenergie in seiner Farbe und/oder Gestalt veränderbar ist, bei dem auf zumindest einer Fläche, insbesondere einer großen Oberfläche zumin- dest eine Markierung als Produktbezeichnung und/oder als Schneidhilfe angeordnet wird.The invention relates to a method for producing an insulating material, in particular from organic and / or inorganic fibers, for example from glass and / or ceramic fibers provided with or without organic and / or inorganic binders, heat-active constituents, preferably pigments, being added to the binders and / or from rigid plastic foam, such as expanded or extruded polystyrene, phenolic resin, polyurethane foam or polyisocyanorate foam, and / or from aerated concrete, mineral foam, foam glass, sintered glass, foamed water glass or similar partially discoloring and / or inflating melts, the color and / or shape of the insulation material being changeable by thermal energy, in which at least one marking as product designation and / or as a cutting aid is arranged on at least one surface, in particular a large surface.
Aus dem Stand der Technik ist die Herstellung von Dämmstoffen bekannt, die beispielsweise bahnen- oder plattenförmig ausgebildet sein können, bei der eine Schmelze aus Glas oder Gestein hergestellt und einem Zerfaserungsgerät zugeführt wird. In dem Zerfaserungsgerät wird die Schmelze in mikrofeine Fasern zerfasert, die anschließend mit einem Bindemittel und gegebenenfalls weiteren Imprägnierungsmitteln benetzt werden. Die derart vorbereiteten Mineralfasern weisen in diesem Zustand eine bestimmte Temperatur auf. Aufgrund ihrer Tempera- tur und insbesondere ihrer Bindemitteln neigen die Mineralfasern dazu aneinander zu haften. Die Mineralfasern werden daher unmittelbar nach ihrer Benetzung mit zumindest Bindemitteln auf einer Fördereinrichtung, in der Regel ein Förderband abgelegt. Die derart gebildete Mineralfaserbahn kann dann in unterschiedlichen Weisen weiterbearbeitet werden. Beispielsweise kann die Mineralfaserbahn nach Erreichen einer bestimmten Materialstärke aufgependelt werden. In der Regel durchläuft die Mineralfaserbahn Kompressionseinrichtungen, Schneideinrichtun- gen zur Seitenrandbesäumung sowie zumindest einen Härteofen, um das Bindemitteln auszuhärten.The production of insulation materials is known from the prior art, which can be designed, for example, in the form of a sheet or plate, in which a melt is produced from glass or stone and is fed to a defibration device. In the defibration device, the melt is defibrated into microfine fibers, which are then wetted with a binder and, if necessary, further impregnation agents. The mineral fibers prepared in this way have a certain temperature in this state. Due to their temperature and especially their binders, the mineral fibers tend to stick together. The mineral fibers are therefore placed on a conveyor, usually a conveyor belt, immediately after they have been wetted with at least binders. The mineral fiber web formed in this way can then be further processed in different ways. For example, the mineral fiber web can be leveled after reaching a certain material thickness. As a rule, the mineral fiber web passes through compression devices, cutting devices, side edge trimming and at least one hardening oven to harden the binder.
Nach Verlassen des Härteofens wird die bahnenförmige Mineralfaserbahn einer Wickelstation zugeführt bzw. alternativ in einzelne Platten geschnitten, die dann einer Verpackungseinrichtung zugeführt und zu handelsüblichen Verpackungseinheiten verpackt werden.After leaving the hardening furnace, the web-shaped mineral fiber web is fed to a winding station or, alternatively, cut into individual plates, which are then fed to a packaging device and packed into commercially available packaging units.
Aus dem Stand der Technik ist ferner bekannt, daß der bahnenförmige Dämmstoff beispielsweise die Mineralfaserplatten, Hartschaumplatten oder Porenbetonplatten, mit Markierungen versehen werden. Diese Markierungen werden in der Regel als Farbmarkierungen mit Hilfe von Schablonen und Farbspritztechnik oder mit Tintenstrahldruckern aufgebracht. Farbmarkierungen haben aber den wesentlichen Nachteil, daß sie die Baustoffklasse, d.h. die Brennbarkeit der Produkte be- einflussen. Um diese Beeinflussung zu vermeiden, setzt man insbesondere bei Mineralwolledämmstoffen, die ein organisches Bindemittel enthalten, elektrisch- oder gasbeheizte Markierungswalzen ein, auf deren Umfang Markierungsbilder und -texte angebracht sind. Diese Markierungswalzen werden periodisch oder konstant auf die Mineralfaserbahn aufgebracht, so daß die beheizten Markie- rungswalzen aufgrund der Temperatur eine Verfärbung des Bindemittels im Mineralfaserprodukt hervorrufen. Dieser Vorgang kann diskontinuierlich, wie beim Stempeln oder kontinuierlich erfolgen, so daß man einen fortlaufenden Schriftzug auf dem Dämmstoff in der Gestalt erzeugen kann, daß das Bindemittel durch die heißen Zonen an der Oberfläche des Dämmstoffs verfärbt wird, und somit der Schriftzug bzw. das Bildzeichen auf der Oberfläche zu sehen ist.It is also known from the prior art that the web-shaped insulating material, for example the mineral fiber panels, hard foam panels or aerated concrete panels, are provided with markings. These markings are usually applied as color markings with the help of stencils and paint spray technology or with inkjet printers. Color markings, however, have the major disadvantage that they are the building material class, i.e. affect the flammability of the products. In order to avoid this influence, electrically or gas-heated marking rollers are used, in particular in the case of mineral wool insulation materials which contain an organic binder, on the circumference of which marking images and texts are attached. These marking rollers are applied periodically or constantly to the mineral fiber web, so that the heated marking rollers cause the binder in the mineral fiber product to change color due to the temperature. This process can be carried out discontinuously, as with stamping, or continuously, so that one can create a continuous lettering on the insulating material in such a way that the binder is discolored by the hot zones on the surface of the insulating material, and thus the lettering or the symbol can be seen on the surface.
Um eine Dämmstoffbahn in einzelne Plattenelemente aufzuteilen ist es bekannt, im Bereich einer Produktionslinie entsprechende Sägeinrichtungen, beispielsweise Pendel-, Kreis- und Bandsägen vorzusehen, die in Abhängigkeit des zu erzeu- genden Produktes zum Einsatz gelangen. Mit derartigen Sägen können aber nur geradlinige Schnitte ausgeführt werden. Ausgehend von diesem Stand der Technik liegt der Erfindung die A u f g a b e zugrunde, ein Verfahren zu schaffen, bei dem die Kennzeichnung und/oder die Aufteilung eines Dämmstoffes in einfacher und kostengünstiger Weise möglich ist, wobei auch hinsichtlich ihrer Konturen komplizierte Kennzeichnungen und/oder Schnitte ausgeführt werden können.In order to divide an insulating material web into individual plate elements, it is known to provide corresponding sawing devices, for example pendulum, circular and band saws, which are used depending on the product to be produced, in the area of a production line. With such saws, however, only straight cuts can be made. On the basis of this prior art, the object of the invention is to create a method in which the marking and / or the division of an insulating material is possible in a simple and inexpensive manner, with complicated markings and / or cuts also being carried out with regard to their contours can be.
Die L ö s u n g dieser Aufgabenstellung sieht vor, daß der Dämmstoff mit zumindest einem Laserstrahl beaufschlagt wird, mit dem die Markierungen in die Fläche des Dämmstoffs eingebracht werden.The solution to this problem provides that the insulation material is exposed to at least one laser beam with which the markings are introduced into the surface of the insulation material.
Demzufolge zeichnet sich das erfindungsgemäße Verfahren dadurch aus, daß anstelle der bisherigen Techniken die Markierungen mittels eines Laserstrahls in die Oberfläche des Dämmstoffs eingebracht werden. Der Laserstrahl bietet hierbei den wesentlichen Vorteil, daß er in einfacher Weise steuerbar, insbesondere lenkbar ist und auf die tatsächlichen Gegebenheiten des Dämmstoffs eingestellt werden kann. Bei dem erfindungsgemäßen Verfahren können sowohl Faserdämmstoffe aus organischen Fasern bzw. mit organischen Bindemitteln gebundene anorganische Fasern, beispielsweise Glasfasern oder organische Substanzen enthaltene Dämmstoffe, Dämmstoffe, die mit organischen Beschichtungen verse- hen sind oder beispielsweise Bestandteile haben, die durch Wärmeenergie ihre Farbe und/oder ihre Gestalt ändern sowie Dämmstoffe aus Hartschaum bearbeitet werden, bei denen sich die Markierung durch Farbveränderungen und/oder Aufblähen der Oberfläche oder partielles Sintern bzw. Schmelzen von Vertiefungen in der Oberfläche ausprägen. Insbesondere sind mit dem erfindungsgemäßen Ver- fahren sämtliche im Oberbegriff des Anspruchs 1 genannten Dämmstoffe bearbeitbar.Accordingly, the method according to the invention is characterized in that the markings are introduced into the surface of the insulating material by means of a laser beam instead of the previous techniques. The laser beam offers the essential advantage that it can be controlled, in particular steered, in a simple manner and can be adjusted to the actual conditions of the insulating material. In the method according to the invention, both fiber insulation materials made of organic fibers or inorganic fibers bound with organic binders, for example glass fibers or insulation materials containing organic substances, insulation materials which are provided with organic coatings or, for example, have constituents which change their color and / or by thermal energy change their shape and hard foam insulation materials are processed, in which the marking is characterized by color changes and / or puffing up of the surface or partial sintering or melting of depressions in the surface. In particular, all the insulating materials mentioned in the preamble of claim 1 can be processed with the method according to the invention.
Bei einem kontinuierlichen Herstellungsprozeß wird der Dämmstoff bahnenförmig dem Laserstrahl zugeführt, um die kontinuierliche Herstellung des Dämmstoffs beibehalten zu können. Es besteht aber auch die Möglichkeit, die Laserstrahlbearbeitung bei bereits hergestellten Dämmstoffformelementen, wie beispielsweise Platten, Rohrschalen, Segmenten oder sonstigen Formkörpern durchzuführen, wobei hier eine manuelle oder automatische Zuführung derartiger Formteile in die Laserstrahlbearbeitungseinrichtung möglich ist. Eine kontinuierliche Bearbeitung des Dämmstoffs erfolgt in der Regel nicht. Vielmehr handelt es sich hierbei um eine Einzelbearbeitung der einzelnen Formteile, wie beispielsweise Rohrschalen, Platten oder dergleichen.In a continuous manufacturing process, the insulating material is fed to the laser beam in the form of a web in order to be able to maintain the continuous production of the insulating material. However, there is also the possibility of carrying out laser beam processing on previously produced insulating material elements, such as panels, pipe shells, segments or other shaped bodies, manual or automatic feeding of such molded parts into the laser beam processing device is possible here. As a rule, there is no continuous processing of the insulation material. Rather, it is an individual processing of the individual molded parts, such as pipe shells, plates or the like.
Nach einem weiteren Merkmal der Erfindung ist vorgesehen, daß mit dem Laserstrahl der Dämmstoff, insbesondere die Bahn in Abschnitte, insbesondere Platten aufgeteilt wird. Durch diese Ausgestaltung besteht die Möglichkeit, daß die Dämmstoffbahn nicht nur mit Markierungen versehen wird, sondern daß mit der gleichen Einrichtung auch ein Schneiden der Dämmstoffbahn in Platten möglich ist. Es werden hierdurch hohe Investitionskosten bei der Gestaltung von Produktionslinien eingespart. Darüber hinaus hat es sich als vorteilhaft erwiesen, daß die Wartung eines Laserstrahls aufgrund seiner im Vergleich zu herkömmlichen Komponenten geringeren Anzahl von mechanischen Elementen wesentlich wartungsfreundlicher ist.According to a further feature of the invention, it is provided that the insulating material, in particular the web, is divided into sections, in particular panels, with the laser beam. With this configuration there is the possibility that the insulation web is not only provided with markings, but that with the same device it is also possible to cut the insulation web into panels. This saves high investment costs when designing production lines. In addition, it has proven to be advantageous that the maintenance of a laser beam is considerably easier to maintain due to its smaller number of mechanical elements compared to conventional components.
Ein den Laserstrahl erzeugender Laser wird vorzugsweise in Längs-, Quer- und/oder Abstandsrichtung sowie gegebenenfalls in seiner Winkelstellung relativ zur Oberfläche des Dämmstoffs bewegt. Der Laserstrahl wird über einen in den drei Hauptachsen drehbaren Spiegel und ein Linsensystem auf die Dämmstoffoberfläche gelenkt. Der Antrieb des Spiegels erfolgt über elektrisch angetriebene Servomotoren, die ihre Antriebssignale von einem Steuergerät erhalten. Das Steuergerät selbst ist mit einer elektronischen Datenverarbeitungsanlage (Rech- ner) verbunden, in der Daten für bestimmte Markierungsanordnungen und/oder -ausgestaltungen auf den Dämmstoffen gespeichert sind. Diese Daten dienen der Steuerung des Laserstrahls hinsichtlich seiner Bewegungen und/oder seiner Intensität. Alternativ kann vorgesehen sein, daß die den Laserstrahl erzeugende Vorrichtung mit den nachgeschalteten optischen Einrichtungen in den drei Rau- machsen bewegbar ist. Durch die Vielzahl der Freiheitsgerade des Laserstrahls können Markierungen und Schnitte in unterschiedlichster Form eingebracht werden. Darüber hinaus besteht der Vorteil, daß beispielsweise sämtliche Buchsta- ben und Zahlen sowie Pictogramme rechnergesteuert und variabel eingebracht werden können. Weiterhin besteht der Vorteil, daß Mineralfaserplatten hergestellt werden können, die beispielsweise an zwei gegenüberliegenden Seiten einen Randverlauf aufweisen, der von einer geradlinigen Begrenzung abweicht. Es können somit beispielsweise Mineralfaserplatten mit bestimmten halbkreisförmigen Ausnehmungen entsprechend von Kundenanforderungen hergestellt werden.A laser generating the laser beam is preferably moved in the longitudinal, transverse and / or distance direction and optionally in its angular position relative to the surface of the insulating material. The laser beam is directed onto the insulation surface via a mirror that can be rotated in the three main axes and a lens system. The mirror is driven by electrically driven servomotors, which receive their drive signals from a control unit. The control unit itself is connected to an electronic data processing system (computer) in which data for certain marking arrangements and / or configurations are stored on the insulation materials. This data is used to control the laser beam with regard to its movements and / or its intensity. Alternatively, it can be provided that the device generating the laser beam with the downstream optical devices can be moved in the three noise axes. Due to the large number of straight lines of freedom of the laser beam, markings and cuts can be made in a wide variety of forms. There is also the advantage that, for example, all book and numbers and pictograms can be introduced in a computer-controlled and variable manner. There is also the advantage that mineral fiber boards can be produced which, for example, have an edge profile on two opposite sides which deviates from a straight-line boundary. For example, mineral fiber boards with certain semicircular recesses can be produced according to customer requirements.
Der Laserstrahl wird von einem Festkörper- oder Gaslasergerät vorzugsweise mit Hilfe eines CO2-Lasers erzeugt.The laser beam is generated by a solid-state or gas laser device, preferably with the aid of a CO 2 laser.
Die Lichtleistung des Laserstrahls wird in Abhängigkeit von der Größe und der Intensität der erforderlichen Materialveränderungen, insbesondere bei Markierungen, über die optischen Einrichtungen eingestellt. Vorzugsweise wird der Laserstrahl mit unterschiedlicher Geschwindigkeit relativ zur Oberfläche des Dämm- stoffs bewegt. Die Relativgeschwindigkeit liegt beispielsweise bei ca. 5m/s.The light output of the laser beam is set as a function of the size and the intensity of the material changes required, in particular for markings, via the optical devices. The laser beam is preferably moved at different speeds relative to the surface of the insulating material. The relative speed is, for example, approximately 5 m / s.
Nach einem weiteren Merkmal der Erfindung ist vorgesehen, daß der Laser zumindest in Förderrichtung der Bahn mit einer gegenüber der Fördergeschwindigkeit größeren Geschwindigkeit, vorzugsweise 5m/s bewegt wird. Diese erhöhte Geschwindigkeit ist bei umfangreichen Markierungen in Form von Buchstaben, Zahlen und/oder Pictogrammen erforderlich, um die gesamte Markierung über eine bestimmte Wegstrecke des geförderten Materials einbringen zu können.According to a further feature of the invention, it is provided that the laser is moved at least in the conveying direction of the web at a speed greater than the conveying speed, preferably 5 m / s. This increased speed is necessary for extensive markings in the form of letters, numbers and / or pictograms in order to be able to introduce the entire marking over a certain distance of the material being conveyed.
Während des Aufteilens der Bahn in Abschnitte wird der Laserstrahl demgegen- über mit einer Geschwindigkeit in Förderrichtung bewegt, die mit der Fördergeschwindigkeit der Bahn übereinstimmt, um beispielsweise einen geradlinig begrenzten Schnitt ausführen zu können.In contrast, during the division of the web into sections, the laser beam is moved in the conveying direction at a speed which corresponds to the conveying speed of the web, in order, for example, to be able to carry out a straight-line cut.
Schließlich ist nach einem weiteren Merkmal der Erfindung vorgesehen, daß die Bewegungen und/oder die Leistung des Laserstrahls über eine Rechneranlage gesteuert werden, deren Eingangsdaten insbesondere der Produktionssteuerung entnommen werden. Eine derartige Verknüpfung der Produktionssteuerung mit der Markierungssteuerung bzw. Schnittsteuerung hat den Vorteil, daß entsprechend dem Kundenwunsch kommissionierte Ware in einfacher und zuverlässiger Weise hergestellt werden kann.Finally, according to a further feature of the invention, it is provided that the movements and / or the power of the laser beam are controlled via a computer system, the input data of which are taken in particular from the production control. Such a link between production control and The marking control or cutting control has the advantage that goods picked according to the customer's request can be produced in a simple and reliable manner.
Eine einem Härteofen entnommene Mineralwollebahn bestimmter Dicke und bestimmter Rohdichte wird beim Ausführungsbeispiel der Erfindung einer Markie- rungs- und Schneidvorrichtung zugeführt. Die Markierungs- und Schneidvorrichtung weist einen CO2-Laser mit variabler Leistung bis zu 1500 Watt und einer Wellenlänge von ca. 1 bis 12 μm, insbesondere von 9 bis 12 μm auf. Der Laser- strahl wird über einen Spiegel auf die Mineralwollebahn gelenkt. Alternativ kann vorgesehen sein, daß der den Laserstrahl erzeugende Laser oberhalb einer Transporteinrichtung, auf der der Mineralwollebahn gefördert wird, auf einem motorbetriebenen Doppelkreuzschlitten montiert ist, so daß er in allen Achsen verfahrbar ist. Darüber hinaus ist der Laser innerhalb des Doppelkreuzschlittens schwenkbeweglich gelagert, so daß ein vom Laser erzeugter Laserstrahl unter einem bestimmten Winkel, abweichend von der Lotrechten auf die Oberfläche der Mineralwollebahn aufgebracht werden kann.In the exemplary embodiment of the invention, a mineral wool web of a certain thickness and a certain bulk density removed from a hardening furnace is fed to a marking and cutting device. The marking and cutting device has a CO 2 laser with variable output up to 1500 watts and a wavelength of approximately 1 to 12 μm, in particular 9 to 12 μm. The laser beam is directed onto the mineral wool web via a mirror. Alternatively, it can be provided that the laser generating the laser beam is mounted on a motor-operated double cross slide above a transport device on which the mineral wool web is conveyed, so that it can be moved in all axes. In addition, the laser is pivotally mounted within the double cross slide, so that a laser beam generated by the laser can be applied to the surface of the mineral wool web at a certain angle, deviating from the perpendicular.
Weiterhin kann der Laserstrahl mit Hilfe von elektronisch justierbaren, optischen Einrichtungen wie Linsen, Linsensystemen, optisch wirksamen Gittern oder Spiegeln in der gewünschten Weise abgelenkt und somit über die zu markierende Oberfläche geführt werden. Durch diese optischen Hilfseinrichtungen, sowie durch Variation des Abstandes derselben zu der zu markierenden Oberfläche, durch Veränderung des Neigungswinkels und der Intensität des Laserstrahls können die Breite und Intensität der Markierung verändert werden.Furthermore, the laser beam can be deflected in the desired manner with the aid of electronically adjustable, optical devices such as lenses, lens systems, optically effective gratings or mirrors and thus guided over the surface to be marked. The width and intensity of the marking can be changed by means of these optical auxiliary devices, as well as by varying the distance thereof from the surface to be marked, by changing the angle of inclination and the intensity of the laser beam.
Bei einer Anordnung des Lasers auf einem Doppelkreuzschlitten wird der Laserstrahl in einem ersten Schritt derart eingestellt, daß er rechtwinklig auf die Oberfläche der Mineralwollebahn auftrifft. Der Doppelkreuzschlitten ist hierbei mit ei- nem Rechner verbunden, über den die Bewegungen des Doppelkreuzschlittens gesteuert werden. Die Daten zur Steuerung der Bewegung des Doppelkreuz- Schlittens erhält der Rechner aus einer Auftragsverwaltung, in die die Art und die Anzahl der herzustellenden Mineralwolleplatten eingegeben ist.When the laser is arranged on a double cross slide, the laser beam is set in a first step in such a way that it strikes the surface of the mineral wool web at right angles. The double cross slide is connected to a computer that controls the movements of the double cross slide. The data to control the movement of the double cross The computer receives a sled from an order management, in which the type and number of mineral wool slabs to be produced is entered.
Die Mineralwollebahn gelangt in den Bereich der Markierungs- und Schneidvor- richtung, wobei die Markierungs- und Schneidvorrichtung in ihrer maximalen Stellung in Richtung der auflaufenden Mineralwollebahn steht. Unmittelbar nach Erreichen der Markierungs- und Schneidvorrichtung beginnt diese Markierungen in die Oberfläche der Mineralwollebahn einzubringen. Hierbei bewegt sich die Markierungs- und Schneidvorrichtung in Förderrichtung der Mineralwollebahn. Sobald die Markierungen vollständig eingebracht sind, bewegt sich die Markierungs- und Schneidvorrichtung in einen vorbestimmten Schneidbereich, um die zuvor markierte Mineralwollebahn um eine Plattenlänge zu verkürzen. Anschließend wird der nachfolgende Abschnitt der Mineralwollebahn markiert und nach Fertigstellung der Markierung abgelängt.The mineral wool web reaches the area of the marking and cutting device, the marking and cutting device being in its maximum position in the direction of the running mineral wool web. Immediately after reaching the marking and cutting device, these markings begin to be introduced into the surface of the mineral wool web. The marking and cutting device moves in the conveying direction of the mineral wool web. As soon as the markings are completely introduced, the marking and cutting device moves into a predetermined cutting area in order to shorten the previously marked mineral wool web by one plate length. The subsequent section of the mineral wool web is then marked and cut to length after completion of the marking.
Die Verfahrgeschwindigkeit des Lasers ist hierbei so gewählt, daß sie wesentlich größer als die Fördergeschwindigkeit ist. Darüber hinaus wird die Leistung des Lasers in Abhängigkeit der Markierungen bzw. des Schneidprozesses automatisch eingestellt. Während des Markiervorgangs wird beispielsweise eine Leistung von 250 mW eingestellt, wohingegen der Schneidvorgang bei einer Leistung von 1500 W durchgeführt wird.The speed of travel of the laser is chosen so that it is significantly greater than the conveying speed. In addition, the power of the laser is automatically set depending on the markings or the cutting process. For example, a power of 250 mW is set during the marking process, whereas the cutting process is carried out at a power of 1500 W.
Die Markierung erfolgt derart, daß mit dem Laser mit niedriger Energie die Form eines Schriftzuges oder Bildes auf den Dämmstoff übertragen wird. Hierbei wird mittels der Laserenergie im engen Bereich das Bindemittel im Mineralwolle- Dämmstoff verfärbt, so daß nach dem Vorgang der Schriftzug auf der Mineralwollebahn zu lesen ist. Anschließend wird die Laserenergie erhöht, um bestimmte Konturen, bei denen es sich auch um geradlinige Schnitte handeln kann, senkrecht zur Oberfläche einzuschneiden. Es besteht auch die Möglichkeit, daß die Energie des Lasers derart eingestellt wird, daß der Laser die Mineralwollebahn nicht vollständig, sondern nur bis zum einem bestimmten Maß schneidet. Die Ränder der Mineralwollebahn können durch Kippen des Lasers teilweise oder vollständig angeschrägt werden bzw. eine beliebige Form erhalten. The marking is carried out in such a way that the shape of a lettering or image is transferred to the insulating material using the laser with low energy. Here, the binder is discolored in the mineral wool insulation material in the narrow area by means of the laser energy, so that after the process the lettering on the mineral wool web can be read. The laser energy is then increased in order to cut certain contours, which can also be straight cuts, perpendicular to the surface. There is also the possibility that the energy of the laser is adjusted in such a way that the laser does not cut the mineral wool web completely, but only to a certain extent. The edges of the mineral wool web can be partially or completely beveled or tilted to any shape by tilting the laser.

Claims

Ansprüche Expectations
1. Verfahren zur Herstellung eines Dämmstoffes, insbesondere aus organischen und/oder anorganischen Fasern, beispielsweise aus mit oder ohne organischen und/oder anorganischen Bindemitteln versehenen Glas- und/oder Keramikfasern, wobei den Bindemitteln hitzeaktive Bestandteile, vorzugsweise Pigmente, beigefügt werden, und/oder aus Kunststoff-Hartschaum, wie beispielsweise expandiertem oder extrudiertem Polystyrol, Phenolharz, Poly- urethanschaum oder Polyisocyanoratschaum, und/oder aus Porenbeton, Mineralschaum, Schaumglas, Sinterglas, aufgeschäumten Wasserglas oder ähnlichen sich partiell verfärbenden und/oder aufblähenden Schmelzen, wobei der Dämmstoff durch Wärmeenergie in seiner Farbe und/oder Gestalt veränderbar ist, bei dem auf zumindest einer Fläche, insbesondere einer großen Oberflä- ehe zumindest eine Markierung als Produktbezeichnung und/oder als Schneidhilfe angeordnet wird, dadurch gekennzeichnet, daß der Dämmstoff mit zumindest einem Laserstrahl beaufschlagt wird, mit dem die Markierungen in die Fläche des Dämmstoffs eingebracht werden.1. A process for producing an insulating material, in particular from organic and / or inorganic fibers, for example from glass and / or ceramic fibers provided with or without organic and / or inorganic binders, heat-active constituents, preferably pigments, being added to the binders, and / or from rigid plastic foam, such as, for example, expanded or extruded polystyrene, phenolic resin, polyurethane foam or polyisocyanorate foam, and / or from aerated concrete, mineral foam, foam glass, sintered glass, foamed water glass or similar partially discolouring and / or inflating melts, the insulation material being thickened Color and / or shape of the heat energy can be changed, in which at least one marking as a product name and / or as a cutting aid is arranged on at least one surface, in particular a large surface, characterized in that the insulation material is subjected to at least one laser beam with which the markings are introduced into the surface of the insulation material.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Dämmstoff bahnenförmig dem Laserstrahl zugeführt wird.2. The method according to claim 1, characterized in that the insulating material is supplied in web form to the laser beam.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Dämmstoff, insbesondere die Dämmstoffbahn mit dem Laserstrahl in3. The method according to claim 1 or 2, characterized in that the insulating material, in particular the insulating material with the laser beam in
Abschnitte, insbesondere Platten aufgeteilt wird.Sections, especially slabs, are split.
4. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß der Laserstrahl mittels elektronisch justierbarer, optischer Einrichtung in Längs-, Quer- und/oder Abstandsrichtung und/oder in seiner Winkelstellung relativ zur Oberfläche der Mineralfaserbahn bewegt wird.4. The method according to claim 1, characterized in that the laser beam by means of electronically adjustable, optical device in Longitudinal, transverse and / or distance direction and / or in its angular position relative to the surface of the mineral fiber web is moved.
5. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß der Laserstrahl in seiner Breite und/oder seiner Intensität verändert wird.5. The method according to claim 1, characterized in that the laser beam is changed in its width and / or its intensity.
6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ein den Laserstrahl erzeugender Laser in Längs-, Quer- und/oder Abstandsrichtung sowie gegebenenfalls in seiner Winkelstellung relativ zur Oberfläche des Dämmstoffs bewegt wird.6. The method according to claim 1, characterized in that a laser generating the laser beam is moved in the longitudinal, transverse and / or distance direction and optionally in its angular position relative to the surface of the insulating material.
7. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß der Laserstrahl mit einem Feststoff- oder Gaslaser, insbesondere einem CO2-Laser erzeugt wird.7. The method according to claim 1, characterized in that the laser beam is generated with a solid or gas laser, in particular a CO 2 laser.
8. Verfahren nach Anspruch 1, d ad u rch ge ke n nze i ch net, daß die Leistung des Laserstrahls in Abhängigkeit der Größe und Intensität der erforderlichen Materialveränderungen eingestellt wird.8. The method of claim 1, d ad u rch ge ke n nze i ch net that the power of the laser beam is adjusted depending on the size and intensity of the required material changes.
9. Verfahren nach Anspruch 1 , dad u rch ge ke n nzeich net, daß die Markierungen als Konturen ausgebildet werden.9. The method of claim 1, dad u rch ge ke n nzeich that the markings are formed as contours.
10. Verfahren nach Anspruch 2, d ad u rch ge ken nze ich net, daß der Laserstrahl zumindest in Förderrichtung der Bahn mit einer gegenüber der Fördergeschwindigkeit größeren Geschwindigkeit, vorzugsweise 5 m/s bewegt wird.10. The method according to claim 2, d ad u rch ge ken nze net that the laser beam at least in the conveying direction of the web at a higher speed than the conveying speed, preferably 5 m / s is moved.
11. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß mit dem Laserstrahl Bindemittel und/oder Pigmente im anorganischen11. The method according to claim 1, characterized in that with the laser beam binders and / or pigments in inorganic
Bindemittel im Dämmstoff durch Wärmeenergie verfärbt werden.Binder in the insulation material can be discolored by thermal energy.
12. Verfahren nach Anspruch 2, dadurch ge ennzeichnet, daß der Laserstrahl während des Aufteilens des Dämmstoffs in Abschnitte mit einer Geschwindigkeit in Förderrichtung bewegt wird, die mit der Fördergeschwindigkeit des Dämmstoffs übereinstimmt.12. The method according to claim 2, characterized in that the laser beam is moved during the division of the insulating material into sections at a speed in the conveying direction which corresponds to the conveying speed of the insulating material.
13. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Bewegungen und/oder die Leistung des Laserstrahls über eine Rechneranlage gesteuert werden, deren Eingangsdaten aus der Produktionssteuerung, insbesondere der Auftragsverwaltung entnommen werden.13. The method according to claim 1, characterized in that the movements and / or the power of the laser beam are controlled by a computer system, the input data are taken from the production control, in particular the order management.
14. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei Dämmstoffen aus Hartschaum mit dem Laser Markierungen durch Farbveränderungen oder durch partielles Sintern bzw. Schmelzen in die Oberfläche aufgebracht werden. 14. The method according to claim 1, characterized in that in the case of insulating materials made of rigid foam with the laser markings by color changes or by partial sintering or melting are applied to the surface.
EP00954632A 1999-08-21 2000-08-16 Method for producing an insulating material Revoked EP1226038B1 (en)

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DE10017269A DE10017269B4 (en) 2000-02-10 2000-04-06 Process for producing an insulating material
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EA005394B1 (en) * 2000-09-06 2005-02-24 Сэн-Гобэн Изовер Mineral wool product and manufacturing method
DE10102853B4 (en) * 2001-01-17 2005-02-10 Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg Process for producing an insulating material
DE10123678A1 (en) * 2001-05-16 2002-12-12 Rockwool Mineralwolle Process for producing an insulating element
DE102006044327B4 (en) 2006-09-19 2008-08-21 Kronotec Ag Marked wood fiber insulating materials
DE102010038098B4 (en) 2010-10-11 2021-06-10 Saint-Gobain Isover G+H Ag Method and device for marking surfaces of mineral wool webs containing binding agents

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JPS5932319B2 (en) * 1974-03-22 1984-08-08 富士写真フイルム株式会社 recording material
DE3229601C2 (en) * 1982-08-09 1984-12-06 Grünzweig + Hartmann und Glasfaser AG, 6700 Ludwigshafen Insulating material web, consisting of an insulating material layer, in particular of mineral fiber felt, and a glued-on lamination web, as well as a process for its production and a process for its installation
GB2281129B (en) * 1993-08-19 1997-04-09 United Distillers Plc Method of marking a body of glass
DE19646813C2 (en) * 1996-01-10 1998-07-09 Hans Hnatek Process for the production of images and characters on the surface of cut-resistant products in the food industry
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DE19630478A1 (en) * 1996-07-27 1998-01-29 Quarzwerke Gmbh Process for laser marking foils
DE29822362U1 (en) * 1998-12-15 1999-04-08 Pfleiderer Daemmstofftechnik Insulation membrane

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