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)
• Thermal Insulation (AREA)
• Laminated Bodies (AREA)
• Inorganic Insulating Materials (AREA)
• Treatment Of Fiber Materials (AREA)
• Application Of Or Painting With Fluid Materials (AREA)

Priority Applications (8)

Applications Claiming Priority (6)

Publications (1)

Family

ID=27213646

Family Applications (1)

Country Status (9)

Cited By (5)

Citations (2)

Family Cites Families (5)

• 2000
  • 2000-08-16 CZ CZ20020595A patent/CZ299173B6/cs not_active IP Right Cessation
  • 2000-08-16 EP EP00954632A patent/EP1226038B1/de not_active Revoked
  • 2000-08-16 WO PCT/EP2000/007962 patent/WO2001014148A1/de active IP Right Grant
  • 2000-08-16 DK DK00954632T patent/DK1226038T3/da active
  • 2000-08-16 ES ES00954632T patent/ES2208403T3/es not_active Expired - Lifetime
  • 2000-08-16 PL PL00357364A patent/PL196062B1/pl unknown
  • 2000-08-16 AU AU67020/00A patent/AU6702000A/en not_active Abandoned
  • 2000-08-16 AT AT00954632T patent/ATE240842T1/de not_active IP Right Cessation
  • 2000-08-16 HU HU0203778A patent/HU223652B1/hu not_active IP Right Cessation

Patent Citations (2)

Non-Patent Citations (1)

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