Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
  • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
  • B44D3/16—Implements or apparatus for removing dry paint from surfaces, e.g. by scraping, by burning
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
  • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D1/00—Processes for applying liquids or other fluent materials
  • B05D1/62—Plasma-deposition of organic layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
  • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
  • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
  • B44D3/24—Lamps for baking lacquers; Painters belts; Apparatus for dissolving dried paints, for heating paints
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D2202/00—Metallic substrate
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers

Definitions

• the invention relates to a component for a painting device, which is contaminated with paint during operation of the painting device, and a device for stripping such components.
• Such components form, for example, floor surfaces, supports for the parts to be painted or covering surfaces in paint booths.
• gratings for floor surfaces are used in painting installations.
• On hangers to be painted parts are positioned and painted in mostly automatic painting.
• Such painting equipment e.g. Paint lines are used, for example, in the automotive industry for painting bodywork parts or entire bodies.
• the use of gratings as floor parts is used in particular for the venting of the painting.
• buildup of paint residues which close the openings of the gratings and thus adversely affect the air flow, so that they must be stripped from time to time thoroughly. This happens in many different ways.
• chemical or physical stripping methods for example by means of sandblasting or the like, are used. Combinations of chemical and physical stripping processes are also used.
• DE 29 52 391 A1 discloses a method and a device for removing paint during spraying of objects on the spray carriage. remained Lackresten become known, in which the spray carriage are sprayed with pressurized water.
• the invention is therefore based on the problem, on the one hand to convey components for painting, which are better and faster to clean compared to conventional components.
• a device is to be imparted, which makes it possible to efficiently remove paint from such paint-spraying components.
• a component for a painting device which is contaminated with paint during operation of the painting device, such as a grate, a hanger, a cover and the like, characterized in that it with a plasma polymer, oxygen, carbon and silicon Coating coating is coated.
• the coating of the components used for such painting devices, such as gratings, hangers, cover plates and the like with a plasma polymer, oxygen, carbon and silicon coating has the great advantage that such a coating not only high mechanical and chemical stability, in particular Even at higher temperatures, but also has an improved hydrophobic or oleophobic behavior, so that the components are easier to clean, since they already have an effective, dirt-repellent surface.
• the coating of the components preferably has properties as described in DE 101 31 156 A1 and WO 03 / 002269A2, respectively. both of which are incorporated by reference in their entirety into the present application for the purpose of disclosure.
• Preferred components according to the invention for coating devices comprise a coating, preferably flatly bonded to the substrate, comprising plasma-polymer, silicon, oxygen and carbon, for which
• the molar ratio O: Si is> 1, 1, preferably> 1, 2, more preferably> 1, 25, where> 1, 35 and> 1, 4 are each more preferred,
• the molar ratio C: Si is> 0.6, preferably> 1.00, more preferably> 1.2, again preferably> 1.29
• molar ratio X: Y here and further below means the ratio (n x : n y ).
• preferred combinations of the maximum and minimum values of the respective molar ratio are the respective first, second and third minimum values with the respectively first, second and third maximum values for the abovementioned molar ratios.
• the plasma-polymer coating according to the invention preferably comprises, based on its total number of atoms, without hydrogen and / or fluorine,
• the plasma-polymer layer is a gradient layer which can be produced by temporal variation of the polymerization conditions.
• the plasma-polymer gradient layers for the preferred component and their production are described in DE 10034737 A1, which is included in the present application for the purposes of the disclosure in its entirety. In particular, the inclusion for the manufacturing process of the layer and the associated parameters applies.
• the plasma-polymer coating preferably comprises hydrogen (not detectable with ESCA) and / or fluorine, where:
• the surface to be coated of the component for painting equipment may consist of different materials, for example of plastic, metal, ceramic or glass.
• the substrate material selected in the individual case is either directly, d. H. without pretreatment, provided with the plasma-polymeric coating, or it is surface-cleaned and / or activated beforehand and / or provided with a plasma-polymer adhesion promoter.
• a base metal as the substrate for the coating. This is especially true if it is a steel or an aluminum substrate.
• a metal substrate can be galvanized, burnished, pickled, anodized, hot-dip galvanized, hot-dip galvanized, heat-treated, enamelled, phosphated, mechanically processed or painted before the plasma-polymer layer is applied.
• the substrate to be coated is a hot-dip galvanized steel
• Particularly preferred possesses an acid used for white rust removing, a concentration of acid equivalents (H +) of 1 -3 mole / liter at 20 0 C.
• the preferred treatment time amounts to 10-120 seconds. At higher temperatures, the proton concentration or the treatment time can be preferably reduced. At higher proton concentration, the duration of treatment can be shortened. Examples of acids to be used are hydrochloric acid or sulfuric acid.
• the plasma polymer coatings described can also protect surfaces (one speaks of LABS-free equipment, where LABS free stands for "free of wetting substances,"), which can find no use in painting equipment without this protection, as z. B. cause by abrasion Lackier utilizat. This also applies in particular components of the paint spray gun and their supply such. B. hoses and rubber grommets.
• organosilicon coatings such as silicones or inorganic-organic hybrid polymers (which are marketed, for example, under the name "Ormocere") also meet the requirements of the paint shop operators as PTFE-containing coatings. Although these coatings also partly ensure low adhesion of the coating to a coated substrate, they are not suitable since they are usually not resistant to the high hydro-mechanical or cryo-mechanical loads. This generally applies to water high-pressure cleaners from a pressure of 400 bar and dry ice cleaning from a pressure of more than 5 bar. In addition, there is the risk with these coatings that detached particles, which reach the surfaces to be painted, cause craters or cookers in the paint. In contrast, they continue to own Plasma polymer layers described above have the advantage that they are substantially stable even when using water pressure cleaners with up to 2500 bar pressure.
• the coating itself can be used in paint shops, where the paint overspray from the water is reprocessed, although there is a risk that parts of the coating (separately or as coated particles) are painted after recycling.
• this coating can also be used to remove the paint within the paint shop.
• Components which are particularly easy to clean are components according to the invention in which the roughness R 3 (determined according to DIN 4768) of a plasma-polymer coating forming the surface has a value of less than 1 ⁇ m, preferably a value of less than 0.3 ⁇ m and more preferably a value of less than 0.1 ⁇ m.
• the surface of the coating is thus extremely smooth, which is in direct contradiction to the findings summarized under the term Lotus effect.
• Plasma-polymer coatings are contour-replicating, so that correspondingly substrates with correspondingly smooth surfaces are particularly well suited for producing articles which are easy to clean.
• Metallic substrates can be subjected to mechanical, chemical and / or electrochemical smoothing to achieve a very smooth surface, as described, for example, in DE 197 48 240 A1.
• Such a smoothing of a metallic substrate may be followed by a surface treatment by means of a reductively adjusted plasma, in particular a hydrogen plasma, as also described in DE 197 48 240 A1, and if metallic substrates are used, this treatment will be provided in particular if the Compound plasma polymer coating according to the invention should be permanently connected to the metallic substrate.
• the components for painting equipment can be recoated if sufficiently clean surfaces are offered.
• the re-coating takes place shortly before the end of the period of use. If this is exceeded, the surface can be cleaned with very high pressure and made available to the post-coating process.
• Part of the invention is also a device for paint stripping of components according to the invention for a painting, wherein at least one high-pressure water nozzle, the high-pressure water jet is directed to the in at least one direction relative to this movable component. It is preferred that the component is positioned on a movable in at least one direction recording. Further preferred according to the invention is an embodiment in which the high-pressure water jet rotates during its operation.
• the high-pressure water jet has a pressure of 300-700 bar, preferably 400-600 bar, more preferably 500 bar.
• the device according to the invention is mounted on a mobile carrier, which is particularly preferably a truck.
• the device according to the invention for paint stripping of components of a painting device with at least one high-pressure water jet whose high-pressure water jet is directed in at least one direction relative to this movable components allows a very efficient, cost-effective and automatic paint stripping of the components, such as the gratings, hangers and the like .
• both the component relative to the high-pressure water jet and the high-pressure water jet may be designed to be movable relative to the receptacle.
• the at least one high-pressure water nozzle rotates during its operation, whereby the Entlackungs Angel is improved.
• the high-pressure water jet preferably has a pressure of from 300 to 700 bar, preferably from 400 to 600 bar, in particular 500 bar. This pressure lying only in the medium pressure range allows a much longer life of the pressure generating high pressure pumps, since the wear of the high pressure pumps at this pressure is much lower than at higher pressures, which are known from the prior art.
• the paint stripper further preferably has an integrated drying device.
• An advantageous embodiment provides for a mobile support of the device, so that it can be used mobile and so spent on different painting facilities and can be used there on site.
• the paint stripper can also be part of a truck structure, in which case preferably a self-sufficient power supply and tanks for water supply and a compressor for generating the compressed air are provided, so that the system works completely self-sufficient.
• Part of the invention is also the use of a above-defined plasma-polymeric layer for coating components for painting.
• part of the invention is the use of a commercial high-pressure cleaner with lance for complete stripping of a component according to the invention for a painting.
• Part of the invention is also a method for Entlackung a component for a painting, comprising the steps
• this takes place using dry ice in the form of pellets or snow. Preference is given to the use of largely anhydrous dry ice.
• the blasting of the component according to the invention for a painting device preferably takes place with a pressure ⁇ 4 bar, more preferably ⁇ 3.5 bar.
• Fig. 1 is a side view of the making use of the invention device for Entlackung and
• Fig. 2 is a front view of the paint stripper.
• Example 1 (Device for paint stripping):
• An apparatus for paint stripping of components of a (not shown) painting which are contaminated during operation of the painting with paint, e.g. of gratings, shown in Fig. 1 and Fig. 2, comprises a substantially horizontally disposed first support surface 100 and a substantially vertically disposed second support surface 120, against which components to be cleaned, such as gratings 200, rest.
• High-pressure water jets are directed onto the gratings 200 along the directions designated H, wherein it should be noted that even a high-pressure jet directed in one of the directions designated H is already sufficient for efficient paint stripping.
• the gratings 200 are moved along the directions of movement designated by a double arrow V (FIG. 2).
• the high-pressure water jets can move relative to the gratings 200 at stationary gratings 200.
• the device comprises a first receiving area 105, in which a manual pushing or pulling of the gratings 200 is possible. This is followed by the actual Entlackungs Scheme 1 15, in which the gratings 200 by drivers, e.g. Friction wheels or the like, which engage as possible in the upper region of the gratings 200, are automatically moved, for example, by motors or the like.
• the gratings 200 or other components of the lacquering device have a coating with a plasma-polymer coating comprising oxygen, carbon and silicon, as described in DE 101 31 156 A1, to which reference is made here, and which are disclosed herein for the purpose of disclosure is fully incorporated into the present application is described.
• the coating can be connected via an intermediate layer with the grid.
• the pressure of the high-pressure water jet is between 300 and 700 bar, preferably between 400 and 600 bar, in particular 500 bar. It is therefore in the medium pressure range. Such a pressure causes in known water serrochtulpumpen a much smaller wear than pressures which are used in known from the prior art paint stripping and which are over 1000 - 1200 bar. In addition, the water flow rate is much lower, so that the device can be used cost-effectively.
• the (not shown) high-pressure water nozzles preferably rotate during their operation, whereby a particularly effective Entlackung is achieved.
• the high-pressure water pump is integrated in a circulatory system which comprises a water tank and the required components for the water treatment (not shown).
• the apparatus may further include a drying device (not shown) adjoining the stripping area, into which the grids 200 are moved from the stripping area 1 15 described above and, in the case of several stripping steps, from this also back to the stripping area 15.
• a drying device (not shown) adjoining the stripping area, into which the grids 200 are moved from the stripping area 1 15 described above and, in the case of several stripping steps, from this also back to the stripping area 15.
• the entire device is arranged on a mobile carrier 300, which, for example, has wheels 310 for the procedure or is itself designed as a container. It has corresponding connections for on-site supply systems for electricity, compressed air, fresh water as well as disposal systems for wastewater and exhaust air. In this way, the entire device is mobile and can be spent on painting facilities where it can be used on site.
• the above-described paint stripping device can also be integrated, for example, in a structure of a (not shown) truck, in order to be spent in this way to Lackier Anlagenen.
• the carrier 300 then forms the truck body.
• the device preferably has its own power supply by means of a corresponding power-generating unit, also tanks for the water supply and a compressor for generating the compressed air, so that the system works completely self-sufficient.
• a hot dip galvanized steel plate was finely cleaned by means of a low pressure oxygen plasma (at a frequency of 13.56 MHz). Subsequently, the plasma polymer coating was applied at the same frequency, the plasma being formed from oxygen O 2 and hexalmethyldisiloxane (HMDSO). The ratio of oxygen to HMDSO was varied so that the gas flow at HMDSO last stood for the gas flow at O 2 in the ratio of 27.5: 100. The most recent accurate process parameters for the deposition of the plasma polymer coating are given in Table 1.
• the surface was abraded with a fine sandpaper.
• the reference was made with an untreated hot-dip galvanized steel plate and an anti-adhesive organosilicon coating, which had been applied to a steel substrate by the sol-gel method.
• the abraded dust was stirred into a water-based basecoat and spray-painted onto a steel substrate with a coil-coating coating. While in coating according to the invention and the untreated substrate except the zinc particles were no painting defects to detect, showed the paint with the powder of the organosilicon reference substrate both on some metal particles as well as on the surface craters and digesters.
• Household customary granulated sugar was provided three times with a plasma polymer coating according to the invention.
• the surface of the crystal sugar was activated by means of an oxygen plasma.
• the plasma-polymer coating was applied, wherein the plasma of oxygen O 2 and hexalmethyldisiloxane (HMDSO) was formed.
• the ratio of oxygen to HMDSO was varied so that the gas flow at HMDSO last stood for the gas flow at O 2 in the ratio of 27.5: 100.
• the most recent accurate process parameters for the deposition of the plasma polymer coating are given in Table 1.
• silicon wafers were co-coated in the same process.
• the layer thickness measurement yielded 557 nm.
• Hot-dip galvanized steel sheets were provided with a plasma polymer coating as in Example 3. Subsequently, the sheet was painted with the solvent-based topcoat CA 8100 from PPG Industries. A cross-hatch test according to DIN EN ISO 2409 then resulted in a value of GT5, which means that after cutting the grid and then breaking it down within the incised grid on an area substantially larger than 65% of the surface between the Cut edges, the paint chipped, in which case the paint was already completely removed from the substrate during scoring. On an uncoated reference substrate, GT3 was obtained, which means that after scoring a grid and then scrubbing to 15 to 35% of the surface between the cut edges, the paint peeled off.
• Hot-dip galvanized gratings with a thin white rust coating were each pickled under one of the following conditions:
• the gratings were rinsed in deionized water and dried with a hot air blower.
• a galvanized grid was plasma coated with the process parameters given in Example 3. Subsequently, the grid was painted ten times with a water-based basecoat and cleaned with a high-pressure water cleaner at 2500 bar. Even after that, the coating could be detected both by the low surface energy and by the low adhesion of the Glasurit Universalground.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Plasma & Fusion (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Priority Applications (3)

Applications Claiming Priority (4)

Publications (2)

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ID=36613469

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• 2006
  • 2006-04-07 KR KR1020077025617A patent/KR101359009B1/ko not_active Expired - Fee Related
  • 2006-04-07 WO PCT/EP2006/061463 patent/WO2006106149A2/de not_active Ceased
  • 2006-04-07 US US11/887,851 patent/US8574375B2/en not_active Expired - Fee Related
  • 2006-04-07 JP JP2008504785A patent/JP5334569B2/ja not_active Expired - Fee Related

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