EP0346754A2 - Process for correcting defects in coatings - Google Patents
Process for correcting defects in coatings Download PDFInfo
- Publication number
- EP0346754A2 EP0346754A2 EP89110312A EP89110312A EP0346754A2 EP 0346754 A2 EP0346754 A2 EP 0346754A2 EP 89110312 A EP89110312 A EP 89110312A EP 89110312 A EP89110312 A EP 89110312A EP 0346754 A2 EP0346754 A2 EP 0346754A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- polishing
- paint
- polishing process
- supercooled
- grinding
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000007547 defect Effects 0.000 title claims abstract description 10
- 238000000576 coating method Methods 0.000 title abstract description 4
- 238000007517 polishing process Methods 0.000 claims abstract description 18
- 238000000227 grinding Methods 0.000 claims abstract description 9
- 239000000428 dust Substances 0.000 claims abstract description 6
- 239000003973 paint Substances 0.000 claims description 26
- 238000005498 polishing Methods 0.000 claims description 26
- 238000010422 painting Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 3
- 239000004922 lacquer Substances 0.000 abstract description 9
- 229920000728 polyester Polymers 0.000 abstract description 2
- 229920002635 polyurethane Polymers 0.000 abstract description 2
- 239000004814 polyurethane Substances 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000112 cooling gas Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
Definitions
- the invention relates to a method of the type specified in the preamble of the first claim.
- Polishable paints have so far been used for painting workpieces made of metal or thermosetting plastic materials. If painting defects occur, mainly dust inclusions or the like, these can be eliminated by sanding with the finest sandpaper possible and then polishing with a suitable polishing agent. Polishing is done either by hand or with a polishing machine with the help of cotton wool, lambskin or felt.
- elastic lacquers for example highly or medium-elastic lacquers, in particular 2-component polyurethane lacquers based on polyester or lacquers based on acrylate.
- These paints are elastic and are particularly suitable for painting highly elastic workpieces. These prevent the paint from splintering when it is deformed.
- the object of the present invention is to demonstrate a method for repairing defects in paints, in particular in paints of workpieces provided with elastic paints, which does not have the disadvantages mentioned above.
- this object is achieved by the characterizing features of the first claim. It was surprisingly found that when the polishing process was carried out on supercooled paint surfaces, the grinding marks could be eliminated and there was no matting of the polishing points. It is therefore crucial for the successful implementation of the method according to the invention that the entire polishing process, that is to say the pre-polishing with pre-polishing paste, the necessary Post-polishing (finishing) with Polish and polishing without polishing agent is carried out at a supercooled coating point. According to the invention, the point to be polished is thus cooled after grinding and before the first polishing process. After cooling has been reached, the cooling is interrupted and the polishing process begins.
- the polish increases the paint temperature to above -10 ° C and the polish cannot be stopped immediately, it must be interrupted and the lacquer area to be processed must be cooled again.
- polishing The necessary polishing process (finishing) with Polish must also be carried out on the supercooled paint.
- the ground areas are then cooled with the aid of, for example, gaseous nitrogen at approx. -160 ° C.
- gaseous nitrogen at approx. -160 ° C.
- the area to be cooled is limited beforehand with foam.
- passage openings for the gas are provided so that a gas flow and no gas jam is always possible.
- the gas outlet temperature can be influenced by providing the nitrogen reservoir with a heater.
- the pressure in the nitrogen storage container is adjusted by the heating and thereby the outflow rate of the nitrogen is influenced; i.e. the higher the heating power, the higher the pressure in the storage container and the faster and therefore colder the nitrogen escapes from the storage container to the area to be cooled.
- polishing process begins. For this purpose, the supply of the cooling gas is switched off.
- the polishing agent e.g. Herberts® polishing paste is applied. Since this is a water-based polishing agent, it immediately freezes on the cooled lacquer area. Subsequently, further cooling gas is polished without supply. Polishing should be done mechanically using lambskin hoods with a polishing agent suitable for the paint. Here, polishing machine speeds of approximately 4,500 rpm have proven to be sufficient.
- the polishing process should be stopped or interrupted - when the paint surface to be processed is heated to approx. -10 ° C.
- the polishing process still not completed, it must be interrupted and the area to be processed cooled again.
- the interrupted polishing process can be continued again.
- polish e.g. Finesse - it® from 3M Germany. To do this, cool it down again to below -10 ° C and finish polishing and polishing without polishing agent before the paint on the area to be processed is heated to above -10 ° C. Wiping or polishing by hand then no longer needs to be carried out on the supercooled paint.
- Polish e.g. Finesse - it® from 3M Germany.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren der im Oberbegriff des ersten Anspruchs angegebenen Art.The invention relates to a method of the type specified in the preamble of the first claim.
Polierfähige Lacke werden bisher zum Lackieren von Werkstücken aus Metall oder duroplastischen Kunst-stoffmaterialien angewandt. Entstehen hierbei Lackierfehler, hauptsächlich Staubeinschlüsse oder ähnliches, so können diese durch Schleifen mit möglichst feinem Schleifpapier und anschließendem Polieren mit einem geeigneten Poliermittel beseitigt werden. Poliert wird hierbei entweder von Hand oder mit einer Poliermaschine unter Zuhilfenahme von Watte, Lammfell oder Filzen.Polishable paints have so far been used for painting workpieces made of metal or thermosetting plastic materials. If painting defects occur, mainly dust inclusions or the like, these can be eliminated by sanding with the finest sandpaper possible and then polishing with a suitable polishing agent. Polishing is done either by hand or with a polishing machine with the help of cotton wool, lambskin or felt.
Darüber hinaus ist es bekannt, elastische Lacke, so beispielsweise hoch- oder mittelelastische Lacke, insbesondere 2K-Polyurethan-Lacke auf Polyesterbasis oder Lacken auf Acrylatbasis zu verarbeiten. Diese Lacke sind elastisch und eignen sich insbesondere zum Lackieren hochelastischer Werkstücke. Bei diesen wird dann bei einer Verformung verhindert, daß hierbei der Lack absplittert.In addition, it is known to process elastic lacquers, for example highly or medium-elastic lacquers, in particular 2-component polyurethane lacquers based on polyester or lacquers based on acrylate. These paints are elastic and are particularly suitable for painting highly elastic workpieces. These prevent the paint from splintering when it is deformed.
In letzter Zeit werden gerade bei der Herstellung von Kraftfahrzeugen zunehmend hochelastische Kunststoffe eingesetzt, z.B. bei Stoßfängern, die hierbei in Wagenfarbe lackiert sind. Da diese hochelastischen Kunst stoffe Verformungsarbeit aufnehmen sollen, ohne hierbei beschädigt zu werden, müssen ebenfalls die zum Lackieren verwendeten Lacke diese Verformungsfähigkeit problemlos und beschädigungsfrei mitdurchführen können.Recently, especially in the manufacture of motor vehicles, highly elastic plastics have been increasingly used, for example in bumpers, which are painted in the vehicle color. Because this highly elastic art If materials are to take up deformation work without being damaged in the process, the paints used for painting must also be able to carry out this deformability without problems and without damage.
Haben sich nun beim Lackieren mit elastischen Lacken Fehlstellen herausgestellt, so können diese zwar herausgeschliffen werden, jedoch lassen sich die Schleifriefen durch den Poliervorgang in der Regel nicht beseitigen. Auch ist schon festgestellt worden, daß sich zwar die Schleifriefen beseitigen ließen, die Polierstelle aber matt blieb. Somit blieb bisher nur der eine Weg, Werkstücke, die mit elastischen Lacken fehlerhaft lackiert waren, nach dem Ausschleifen des Fehlers erneut zu lackieren. Dies bedeutet gerade in der Serienfertigung von Werkstücken Taktverluste, einen erhöhten Lackverbrauch sowie einen hohen manuellen und maschinellen Aufwand sowie die Gefahr eines erneuten Fehlers oder Schmutzeinschlußes so daß wiederum kein optisch einwandfrei lackiertes Werkstück erhalten wird.If imperfections have now emerged when painting with elastic paints, they can be sanded out, but the grinding marks cannot usually be removed by the polishing process. It has also already been found that the grinding marks can be removed, but the polishing point remains matt. So far, there was only one way to repaint workpieces that had been incorrectly coated with elastic paints after the error had been ground out. This means, especially in the series production of workpieces, cycle losses, increased paint consumption as well as a high level of manual and mechanical effort, as well as the risk of renewed errors or inclusion of dirt, so that in turn no optically flawlessly painted workpiece is obtained.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zum Ausbessern von Fehlern in Anstrichen, insbesondere in Lacken von mit elastischen Anstrichen versehenen Werkstücken aufzuzeigen, das die vorher erwähnten Nachteile nicht aufweist.The object of the present invention is to demonstrate a method for repairing defects in paints, in particular in paints of workpieces provided with elastic paints, which does not have the disadvantages mentioned above.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des ersten Anspruchs gelöst. Es wurde überraschenderweise gefunden, daß bei Durchführung des Poliervorganges an unterkühlten Anstrichoberflächen die Schleifriefen beseitigt werden konnten und keine Vermattung der Polierstellen eintrat. Entscheidend für die erfolgreiche Durchführung des erfindungsgemäßen Verfahrens ist es also, daß der gesamte Poliervorgang, also das Vorpolieren mit Vorpolierpaste, das notwendige Nachpolieren (Finishen) mit Polish sowie das Aufpolieren ohne Poliermittel, an einer unterkühlten Anstrichstelle durchgeführt wird. Erfindungsgemäß wird also nach dem Schleifen und vor dem ersten Poliervorgang die zu polierende Stelle gekühlt. Nach Erreichen der Abkühlung wird die Kühlung unterbrochen und der Poliervorgang begonnen.According to the invention, this object is achieved by the characterizing features of the first claim. It was surprisingly found that when the polishing process was carried out on supercooled paint surfaces, the grinding marks could be eliminated and there was no matting of the polishing points. It is therefore crucial for the successful implementation of the method according to the invention that the entire polishing process, that is to say the pre-polishing with pre-polishing paste, the necessary Post-polishing (finishing) with Polish and polishing without polishing agent is carried out at a supercooled coating point. According to the invention, the point to be polished is thus cooled after grinding and before the first polishing process. After cooling has been reached, the cooling is interrupted and the polishing process begins.
Die Weiterbildung der Erfindung nach Anspruch 2 beschreibt bevorzugte Temperaturbereiche.The development of the invention according to claim 2 describes preferred temperature ranges.
Wird bei dem Poliervorgang durch das Polieren die Lacktemperatur auf über -10°C angehoben und kann der Poliervorgang nicht augenblicklich beendet werden, so ist er zu unterbrechen und die zu bearbeitende Lackstelle erneut zu unterkühlen.If, during the polishing process, the polish increases the paint temperature to above -10 ° C and the polish cannot be stopped immediately, it must be interrupted and the lacquer area to be processed must be cooled again.
Auch der notwendige Nachpoliervorgang (Finishen) mit Polish muß am unterkühlten Lack durchgeführt werden.The necessary polishing process (finishing) with Polish must also be carried out on the supercooled paint.
Aufgrund der Erfindung ist es möglich, Werkstücke, die mit elastischen Lacken, insbesondere auch mit hochelastischen Lacken, lackiert wurden und bei denen Fehlstellen beim Lackieren oder beim Trocknungsvorgang eintraten, nun durch einen einfachen Schleif- und Poliervorgang auszubessern. Dadurch wird die Ausschußquote wesentlich verringert. Deshalb eignet sich dieses Verfahren hauptsächlich zur Anwendung bei der Serienfertigung, es ist jedoch hierauf nicht beschränkt.Due to the invention, it is now possible to repair workpieces that have been coated with elastic paints, in particular also with highly elastic paints, and in which defects occurred during painting or during the drying process, by means of a simple grinding and polishing process. This significantly reduces the reject rate. This method is therefore mainly suitable for use in series production, but is not limited to this.
Im folgenden soll anhand eines Beispiels das erfindungsgemäße Verfahren näher erläutert werden. Es wird davon ausgegangen, daß bei einem Lackiervorgang mit hochelastischem Lack während dessen Trocknungsphase sich Staubeinschlüsse eingestellt haben. Um diese auszubessern, wird die bzw. werden die entsprechenden Stellen mit möglichst feinem Schleifpapier (Körnung bevorzugt 1000 - 2000) geschliffen, so daß das bzw. die Staubkörner entfernt werden.The method according to the invention is to be explained in more detail below using an example. It is assumed that in a painting process with highly elastic paint during the drying phase, dust inclusions have set in. In order to repair this, the will be the corresponding Sand the areas with the finest possible sandpaper (grit preferably 1000 - 2000) so that the dust or grains of dust are removed.
Anschließend wird bzw. werden die geschliffenen Stellen mit Hilfe von beispielsweise gasförmigem Stickstoff von ca. -160°C abgekühlt. Um den Stickstoffverbrauch in Grenzen zu halten, wird vorher der abzukühlende Bereich mit Schaumstoff begrenzt. In dieser Begrenzung sind Durchtrittsöffnungen für das Gas vorgesehen, damit immer ein Gasfluß und kein Gasstau möglich ist. Die Gasaustrittstemperatur kann bei Stickstoff dadurch beeinflußt werden, daß der Stickstoffvorratsbehälter mit einer Heizung versehen ist. Durch die Heizung wird der Druck in dem Stickstoffvorratsbehälter eingestellt und dadurch die Ausströmgeschwindigkeit des Stickstoffes beeinflußt; d.h. je höher die Heizleistung ist, desto höher wird der Druck im Vorratsbehälter und desto schneller und damit kälter tritt der Stickstoff aus dem Vorratsbehälter auf die zu kühlende Stelle aus.The ground areas are then cooled with the aid of, for example, gaseous nitrogen at approx. -160 ° C. To keep nitrogen consumption within limits, the area to be cooled is limited beforehand with foam. In this limitation, passage openings for the gas are provided so that a gas flow and no gas jam is always possible. In the case of nitrogen, the gas outlet temperature can be influenced by providing the nitrogen reservoir with a heater. The pressure in the nitrogen storage container is adjusted by the heating and thereby the outflow rate of the nitrogen is influenced; i.e. the higher the heating power, the higher the pressure in the storage container and the faster and therefore colder the nitrogen escapes from the storage container to the area to be cooled.
Sobald der geschliffene Lackbereich eine Temperatur von ca. -40°C aufweist, wird mit dem Poliervorgang begonnen. Hierzu wird die Zufuhr des Kühlgases abgeschaltet. Das Poliermittel, z.B. Herberts® Polierpaste, wird aufgetragen. Da dies ein Poliermittel auf Wasserbasis ist, gefriert es sofort auf der abgekühlten Lackstelle. Anschließend wird ohne Zufuhr weiteren Kühlgases poliert. Poliert werden sollte maschinell unter Verwendung von Lammfellhauben mit einem für den Lack geeigneten Poliermittel. Hierbei haben sich Poliermaschinendrehzahlen von ca. 4 500 min⁻¹ als ausreichend erwiesen.As soon as the sanded lacquer area has a temperature of approx. -40 ° C, the polishing process begins. For this purpose, the supply of the cooling gas is switched off. The polishing agent, e.g. Herberts® polishing paste is applied. Since this is a water-based polishing agent, it immediately freezes on the cooled lacquer area. Subsequently, further cooling gas is polished without supply. Polishing should be done mechanically using lambskin hoods with a polishing agent suitable for the paint. Here, polishing machine speeds of approximately 4,500 rpm have proven to be sufficient.
Der Poliervorgang sollte beendet bzw. unterbrochen werden-wenn die zu bearbeitende Lackoberfläche auf ca. -10°C erwärmt ist. Ist hierbei der Poliervorgang noch nicht abgeschlossen, so muß er unterbrochen werden und die zu bearbeitende Stelle erneut abgekühlt werden. Sobald die noch weiter zu bearbeitende Stelle wieder auf ca. -40°C abgekühlt ist, kann der unterbrochene Poliervorgang wieder fortgesetzt werden.The polishing process should be stopped or interrupted - when the paint surface to be processed is heated to approx. -10 ° C. Here is the polishing process still not completed, it must be interrupted and the area to be processed cooled again. As soon as the area still to be processed has cooled down again to approx. -40 ° C, the interrupted polishing process can be continued again.
Anschließend muß die zu bearbeitende Stelle noch mit Polish (z.B. Finesse - it® der Firma 3M Deutschland) nachpoliert werden. Hierzu ist sie erneut auf unter -10°C abzukühlen und die Nachpolierung sowie das Aufpolieren ohne Poliermittel zu beenden, bevor der Lack an der zu bearbeitenden Stelle auf über -10°C erwärmt ist. Das Nachwischen bzw. Polieren von Hand braucht dann nicht mehr am unterkühlten Lack durchgeführt zu werden.Then the area to be processed must be polished with Polish (e.g. Finesse - it® from 3M Germany). To do this, cool it down again to below -10 ° C and finish polishing and polishing without polishing agent before the paint on the area to be processed is heated to above -10 ° C. Wiping or polishing by hand then no longer needs to be carried out on the supercooled paint.
Claims (5)
dadurch gekennzeichnet, daß nach dem Schleifen und vor Beginn des Poliervorganges die zu polierende Anstrichoberfläche unterkühlt wird und der gesamte Poliervorgang - bei Unterbrechung der Kühlung - nur an dem unterkühlten Anstrich durchgeführt wird.1. A method for repairing defects in paints, in particular painting defects such as dust inclusions, in the case of workpieces provided with highly elastic paints, for which purpose the painting defect is repaired by grinding and subsequent polishing,
characterized in that after grinding and before the start of the polishing process, the surface of the paint to be polished is supercooled and the entire polishing process - with interruption of cooling - is carried out only on the supercooled paint.
dadurch gekennzeichnet, daß der Poliervorgang bei einer Temperatur des Anstriches an der Fehlerstelle von mindestens -40°C beginnt und vor Erreichen einer Temperatur von höchstens 0°C beendet wird.2. The method according to claim 1,
characterized in that the polishing process begins at a temperature of the paint at the defect location of at least -40 ° C and is ended before reaching a temperature of at most 0 ° C.
dadurch gekennzeichnet, daß der Poliervorgang bei Erreichen von -10°C unterbrochen wird, daß die Fehlerstelle erneut unterkühlt wird und anschließend der Poliervorgang beendet wird.3. The method according to claim 1 or 2,
characterized in that the polishing process is interrupted when -10 ° C is reached, that the fault location is subcooled again and then the polishing process is ended.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3819973 | 1988-06-11 | ||
| DE3819973A DE3819973C1 (en) | 1988-06-11 | 1988-06-11 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0346754A2 true EP0346754A2 (en) | 1989-12-20 |
| EP0346754A3 EP0346754A3 (en) | 1990-11-22 |
| EP0346754B1 EP0346754B1 (en) | 1992-12-16 |
Family
ID=6356379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19890110312 Expired - Lifetime EP0346754B1 (en) | 1988-06-11 | 1989-06-07 | Process for correcting defects in coatings |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0346754B1 (en) |
| DE (2) | DE3819973C1 (en) |
| ES (1) | ES2037332T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994011152A1 (en) * | 1992-11-11 | 1994-05-26 | Linde Aktiengesellschaft | Method of cooling parts of surfaces |
| DE19623931C1 (en) * | 1996-06-15 | 1997-07-17 | Herberts Gmbh | Method for polishing and/or grinding paint surfaces |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3804588A1 (en) * | 1988-02-13 | 1989-05-11 | Bayer Ag | METHOD FOR POLISHING VARNISH SURFACES |
| DE3910582C1 (en) * | 1989-04-01 | 1990-06-28 | Messer Griesheim Gmbh, 6000 Frankfurt, De | Temperature-controlling device |
| DE3943491C1 (en) * | 1989-04-01 | 1991-08-29 | Messer Griesheim Gmbh, 6000 Frankfurt, De | Cold gas generator and feeder to grinding and polishing tool(s) - has gas mixt. container in line from liquefied gas reservoir to tool(s) |
| DE3910590C2 (en) * | 1989-04-01 | 1997-10-16 | Messer Griesheim Gmbh | Hand polisher |
| ATE106300T1 (en) * | 1989-04-01 | 1994-06-15 | Messer Griesheim Gmbh | POLISHING OR GRINDING EQUIPMENT. |
| DE3910581A1 (en) * | 1989-04-01 | 1990-10-04 | Messer Griesheim Gmbh | Cold-gas working device |
| DE19539065A1 (en) * | 1995-10-20 | 1997-04-24 | Audi Ag | Process for repairing coating defects |
| DE19802705A1 (en) * | 1998-01-24 | 1999-07-29 | Bayerische Motoren Werke Ag | Device for leveling of raised paint spots on repair areas, especially on automobile bodies |
| DE19809982B4 (en) * | 1998-03-09 | 2007-09-27 | Volkswagen Ag | Method for small-area repair of paint defects of a paint coating |
| DE102008003319A1 (en) * | 2008-01-07 | 2009-07-09 | Volkswagen Ag | Painted motor vehicle body surface processing method for use in paint finishing system, has whetting section of surface under utilization of grinding medium, and polishing whetted section of surface under utilization of polishing agent |
| ITUB20156872A1 (en) * | 2015-12-09 | 2017-06-09 | Eurosider Sas Di Milli Ottavio & C | DEVICE AND METHOD FOR PAINTING PAINTED ITEMS. |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1862135A (en) * | 1928-02-24 | 1932-06-07 | Edmond H Bucy | Means for rubbing coated surfaces |
| EP0328963A2 (en) * | 1988-02-13 | 1989-08-23 | Bayer Ag | Method of polishing lacquered surfaces |
-
1988
- 1988-06-11 DE DE3819973A patent/DE3819973C1/de not_active Expired
-
1989
- 1989-06-07 ES ES198989110312T patent/ES2037332T3/en not_active Expired - Lifetime
- 1989-06-07 EP EP19890110312 patent/EP0346754B1/en not_active Expired - Lifetime
- 1989-06-07 DE DE8989110312T patent/DE58902999D1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1862135A (en) * | 1928-02-24 | 1932-06-07 | Edmond H Bucy | Means for rubbing coated surfaces |
| EP0328963A2 (en) * | 1988-02-13 | 1989-08-23 | Bayer Ag | Method of polishing lacquered surfaces |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994011152A1 (en) * | 1992-11-11 | 1994-05-26 | Linde Aktiengesellschaft | Method of cooling parts of surfaces |
| DE19623931C1 (en) * | 1996-06-15 | 1997-07-17 | Herberts Gmbh | Method for polishing and/or grinding paint surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2037332T3 (en) | 1993-06-16 |
| EP0346754A3 (en) | 1990-11-22 |
| DE3819973C1 (en) | 1988-12-29 |
| EP0346754B1 (en) | 1992-12-16 |
| DE58902999D1 (en) | 1993-01-28 |
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