EP1797995A1 - Abrasive tool - Google Patents

Abrasive tool Download PDF

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Publication number
EP1797995A1
EP1797995A1 EP05111767A EP05111767A EP1797995A1 EP 1797995 A1 EP1797995 A1 EP 1797995A1 EP 05111767 A EP05111767 A EP 05111767A EP 05111767 A EP05111767 A EP 05111767A EP 1797995 A1 EP1797995 A1 EP 1797995A1
Authority
EP
European Patent Office
Prior art keywords
layer
grinding tool
tool according
resins
abrasive grain
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
EP05111767A
Other languages
German (de)
French (fr)
Other versions
EP1797995B1 (en
Inventor
Christian Jentgens
Adrian Schoch
Hans-Ulrich Kaufmann
Peter Eggenberger
René Bunner
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Sia Abrasives Industries AG
Original Assignee
Sia Abrasives Industries AG
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.)
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36095668&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1797995(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sia Abrasives Industries AG filed Critical Sia Abrasives Industries AG
Priority to EP05111767A priority Critical patent/EP1797995B1/en
Priority to DE502005006896T priority patent/DE502005006896D1/en
Priority to AT05111767T priority patent/ATE425843T1/en
Priority to PT05111767T priority patent/PT1797995E/en
Priority to ES05111767T priority patent/ES2322163T3/en
Priority to PL05111767T priority patent/PL1797995T3/en
Priority to DE502006008321T priority patent/DE502006008321D1/en
Priority to EP06120537A priority patent/EP1795303B1/en
Priority to EP10181613A priority patent/EP2305426A1/en
Priority to AT06120537T priority patent/ATE488327T1/en
Priority to US11/567,789 priority patent/US20070128989A1/en
Publication of EP1797995A1 publication Critical patent/EP1797995A1/en
Publication of EP1797995B1 publication Critical patent/EP1797995B1/en
Application granted granted Critical
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    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/005—Making abrasive webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
    • B24D3/002—Flexible supporting members, e.g. paper, woven, plastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material

Definitions

  • the present invention relates to a novel abrasive tool with diamond or cubic boron nitride abrasive, which is particularly suitable for wet grinding hard surfaces of, for example, ceramic paints.
  • Hard surfaces require a very hard abrasive grain such as diamond, cubic boron nitride or boron carbide. These are quite expensive, which stands in the way of their dissemination.
  • a grinding tool comprising resin bonded abrasive grain selected from the group consisting of diamond and cubic boron nitride, and a substrate having a first abrasive grain bearing layer which is water permeable and has a planar surface and at least one second layer , which can absorb water and is compressible with retention of shape, wherein the substrate is self-adhesive on the side facing away from the abrasive grain.
  • the abrasive grain is applied over the entire surface, but initially only that grain is used, which sits on the protruding parts of the first layer (webs).
  • the inventive grinding tool is characterized by a high degree of flexibility due to the nature of the substrate.
  • the resin-bonded abrasive grain on the surface can thus be pushed out of the tool during the grinding process. This leads to increased service life and gentle machining of the processed product.
  • the lower-lying abrasive particles of the compressible grinding tool can thus be used selectively.
  • the water supplied to the grinding tool is at least partially retained in the second, water-absorbable and compressible layer.
  • the grinding dust arising from grinding can be easily removed by squeezing the grinding tool.
  • the water contained in the second layer is pushed out, passes to the surface of the grinding tool due to the permeability of the grain-carrying layer and rinses the grinding dust located on or in the surface of the grinding tool.
  • the grinding tool can be easily used again following this simple and fast process.
  • the service lives of the grinding tool according to the invention exceed the service lives of conventional full-surface grinding tools by a factor of about 20 to 100.
  • the grinding tool preferably has an amount of abrasive grain on its surface of 10 to 50 g / m 2 , preferably 10 to 30 g / m 2 (the latter corresponds to 50 to 150 carats / m 2 of diamond).
  • the abrasive grain is bonded to the substrate via a resin binder.
  • Metal bonded abrasives are not included in the present invention.
  • the use of a so-called resin-bonded abrasive grain or "Resin-Bond-Diamond” has the advantage that it has an increased Nachharrencing tendency (English high friability).
  • resin binders for example phenolic resins, melamine resins, urea resins, Epoxy resins, polyester resins, polyacrylate resins or polyurethane resins.
  • water-soluble resins such as phenolic resins
  • phenolic resins which are water-soluble in the uncured state.
  • the use of water-soluble resins allows easy recovery of the abrasive grain from wastes that may be incurred in application processes such as spraying.
  • the residue of abrasive grain and uncured resin is simply placed in an aqueous, preferably alkaline, solution and the resin is separated cleanly and efficiently.
  • the application process can be carried out more quickly, without any associated economic disadvantages (loss of abrasive grain).
  • the substrate of the grinding tool according to the invention comprises at least two different layers.
  • the first layer carries the abrasive grain which is bonded to this first layer via the resin binder described above.
  • the first layer must be permeable to water so that the water retained in the second layer can pass through that layer and wash away in or on top of deposited abrasive dust.
  • the first layer also serves to reinforce the second layer. On the other hand, however, it must have sufficient flexibility to allow compression of the second layer to squeeze out the water retained therein while maintaining the shape of the grinding tool.
  • a knitted fabric such as a Charmeuse or a 1,4-fabric (fabric in which Weft threads and warp threads in the ratio 1: 4 are present) are constructed. It can be used here common knitted fabric or 1,4-fabric.
  • An example are the "Technical Fabrics for abrasive disks" from Sitip (Italy) (polyamide, dtex: 44).
  • the first layer is made of a suede, of spun-bonded nonwovens, needle flow or of a perforated full-surface support.
  • planar is understood to mean that parts (webs) of the first layer protruding from the layer are at essentially the same height (within the scope of customary measuring accuracy).
  • the first layer usually has a thickness of 0.01 cm to 0.1 cm.
  • the selected thickness depends on the requirement profile and can be determined and adjusted by the skilled person without any problems.
  • the grinding tool according to the invention comprises at least one second layer.
  • the second layer must be able to absorb and retain water. Furthermore, the second layer must be compressible so that the water contained therein can be pushed out of this layer and through the first layer. In this case, however, the second layer or the entire grinding tool should be dimensionally true, ie assume its original shape after completion of external force again. In this way, it is ensured that the inventive grinding tool can be used again in the same way and can be freed from grinding dust.
  • the second layer of the substrate of the grinding tool according to the invention thus consists of a soft foam.
  • the skilled person is aware of soft foams.
  • An example is open-celled polyether PU foam.
  • the second layer can consist of several, preferably two, sublayers.
  • An example of this is the "3D spacer fabrics" from Scott & Fyve (Great Britain), a product consisting of two inseparably interwoven fabric layers.
  • the backsheets are not made of foam, it is of course also possible to use two foam underlays.
  • the second layer (or the entirety of sub-layers, which together form the second layer) generally has a thickness of 0.2 cm to 1 cm.
  • the selected thickness depends on the requirement profile and can be determined and adjusted by the skilled person without any problems.
  • the first and second layers may be bonded together in a conventional and known manner, for example by gluing, flame laminating or Velcro bonding. In the latter case, only the first, grain-bearing layer is laminated with a velor. The second layer is then in the form of a reusable intermediate pad. The connection must, however, be permeable to water in any case.
  • the two layers are joined together. But it is also possible to connect both layers permanently, as well as to make the connection only immediately before use. In the latter case, it is possible to provide the second layer on the support of a sander and to connect prior to use with the first layer unit and abrasive grain thereon - advantageously via a releasable connection such as a Velcro connection. As a result, a simple replacement of the first, the abrasive grain bearing layer is possible.
  • the present invention also relates to the use of a unit of a layer which is permeable to water and has a planar surface and resin-bonded abrasive grain selected from the group consisting of diamond and cubic boron nitride, in a grinding tool according to the invention described above.
  • the present invention also relates to a unit comprising a layer which can absorb water, is compressible under retention of form and has a water-permeable, self-adhering layer on at least one side, in particular for use in a grinding tool according to the invention described above.
  • the surface of the second layer which faces away from the surface carrying the first layer, is designed such that it is self-adhesive. This can be done by providing on the corresponding surface of the second layer a layer of conventional suede (for example made of nylon) or Velcro or an adhesive layer.
  • a layer of conventional suede for example made of nylon
  • Velcro or an adhesive layer.
  • the inventive grinding tool is particularly suitable for processing surfaces containing ceramic components.
  • surface materials to be treated are: ceramic surfaces per se, ceramic lacquers on wood (eg sealed parquet floors), technical glass, glass, composite materials based on stone or minerals, fibrous composites such as fiberglass plastics (GRPs) or carbon fiber plastics (CFKs) ) or aramid fiber plastics, or "super hard" paints such as epoxy paints.
  • the abrasive tool of the invention is preferably provided in the form of discs or strips for use on conventional hand-held grinders, e.g. Excenterschleifmaschinen be applied.
  • the abrasive tool of the invention can be produced by applying to the first layer of the substrate the abrasive grain with the resin binder by a pressure-free coating process.
  • pressure-free coating methods are, for example, spray coating, dip coating, air knife or transfer method.
  • a water-soluble resin binder in the uncured state. It is then not necessary to take special care in the application process to the effect that the expensive abrasive grain reaches the substrate surface as completely as possible. Rather, faster processes such as over-spraying the substrate (beyond the surface to be coated) can be accomplished by providing a catcher such as a pan adjacent and below the substrate to be coated.
  • the surface treatment with the grinding tools according to the invention is carried out by wet grinding, preferably with a hand sprayer.
  • the expert usually adds just enough water that not the entire surface of the workpiece is wet, but that just the surface to be treated is moistened so far that the grinding tool can absorb the liquid in the compressible part again. If necessary, the skilled person rinses out the compressible part by applying slight pressure and adds new water.
  • an inventive grinding tool 1 is shown.
  • the grinding tool has resin-bonded diamond 2 as abrasive grain.
  • the binder resin is preferably a phenolic resin.
  • the diamond is located on the elevations (webs) of the first layer 3, preferably of a knitted fabric.
  • the first layer is permeable to water and has a flat surface.
  • the first layer is located on a second layer 4, which can absorb water and is compressible under retention of shape.
  • this second layer 5 is made of a soft foam.
  • the two layers are connected by a water-permeable connection.
  • the layer 5 is a Velcro layer or a layer of an adhesive.
  • the grinding performance of the abrasive tool thus produced was determined on 30mm discs with an eccentric grinder. On a scratch-resistant ceramic lacquer was sanded with the grinding tool for 10 s in the same place, before proceeding to the processing of another place. If the ground point appears dull after such machining, the grinding performance is considered good. With the inventive grinding tool, it was possible to this Way to process well over 100 places with good sanding results.
  • abrasive treatment was carried out with a conventional abrasive tool (pad: waterproof paper base or film) with alumina or silicon carbide as the abrasive grain. Already after the processing of 5 points no matting of the worked places was more recognizable. The abrasive was used up.

Abstract

The grinding tool (1) has a water permeable, flexible textile layer (3), to which an abrasive material, and a layer made of flexible foam, is applied. The abrasive material is made of binder and abrasive grain selected from the group consisting of diamond and cubic boron nitride. The abrasive material is applied to the flexible layer in specific amount with respect to wet state. The abrasive material is made of binder that is selected from the group consisting of phenolic resins, melamine resins, urea resins, epoxy resins, polyester resins, polyacrylate resins and polyurethane resins and mixture. Independent claims are included for the following: (1) method for producing grinding tool; and (2) method of use of grinding tool.

Description

Die vorliegende Erfindung betrifft ein neuartiges Schleifwerkzeug mit Diamant oder kubischem Bornitrid als Schleifmittel, welches sich besonders zum Nassschliff von harten Oberflächen aus beispielsweise keramischen Lacken eignet.The present invention relates to a novel abrasive tool with diamond or cubic boron nitride abrasive, which is particularly suitable for wet grinding hard surfaces of, for example, ceramic paints.

Die Bearbeitung harter Oberflächen, beispielsweise aus keramischen Lacken im Automobilbereich, mit Hilfe von Hand-Schleifwerkzeugen, d.h. von Werkzeugen, die während des Bearbeitungsvorgangs manuell bewegt werden, ist bisher noch nicht zufrieden stellend gelöst. Herkömmliche vollflächige Schleifwerkzeuge weisen in diesen Prozessen sehr geringe Standzeiten auf: nach der Bearbeitung von etwa 2 bis 5 Schleifpunkten ist das Schleifwerkzeug bereits vollständig verschliessen. Es ist offensichtlich, dass die Oberflächenbearbeitung eines vollständigen Automobils mit derartigen Schleifwerkzeugen zeit- und kostenintensiv ist.The machining of hard surfaces, for example of ceramic paints in the automotive sector, by means of hand-held abrasive tools, i. Tools that are moved manually during the machining process, has not yet been satisfactorily resolved. Conventional full-surface grinding tools have very short service lives in these processes: after machining about 2 to 5 grinding points, the grinding tool is already completely closed. It is obvious that the surface finishing of a complete automobile with such abrasive tools is time and cost intensive.

Ein weiteres Problem ergibt sich bei herkömmlichen vollflächigen Schleifwerkzeugen dadurch, dass bei der Bearbeitung harter Oberflächen das Schleifkorn schnell abgenutzt wird, Kornstücke herausbrechen und in Berührung mit der zu bearbeitenden Oberfläche kommen. Die Konsequenz sind unerwünschte Schleifspuren (Swirls) auf der bearbeiteten Oberfläche. Dies passiert ebenso, wenn harte Partikel der Oberfläche herausgelöst und vom Schleifmittel nicht korrekt aufgenommen oder ausgewaschen werden.Another problem arises in conventional full-surface grinding tools in that when machining hard surfaces, the abrasive grain is quickly worn, break out pieces of grain and come into contact with the surface to be machined. The consequence is undesirable swirl marks on the machined surface. This also happens when hard particles are removed from the surface and are not picked up or washed properly by the abrasive.

Für die Bearbeitung harter Oberflächen ist ein sehr hartes Schleifkorn wie Diamant, kubisches Bornitrid oder Borcarbid notwendig. Diese sind recht teuer, was ihrer Verbreitung im Weg steht.Hard surfaces require a very hard abrasive grain such as diamond, cubic boron nitride or boron carbide. These are quite expensive, which stands in the way of their dissemination.

Es bestand ein Bedürfnis nach einem verbesserten Schleifwerkzeug zur Bearbeitung harter Oberflächen, welches höhere Standzeiten aufweist und auf der bearbeiteten Oberfläche keine Schleifspuren hinterlässt.There was a need for an improved abrasive tool for machining hard surfaces which has a longer service life and leaves no sanding marks on the machined surface.

Überraschend wurde die vorstehende Aufgabe durch ein Schleifwerkzeug gelöst, umfassend harzgebundenes Schleifkorn ausgewählt aus der Gruppe bestehend aus Diamant und kubischem Bornitrid, und ein Substrat mit einer ersten, das Schleifkorn tragenden Schicht, welche wasserdurchlässig ist und eine plane Oberfläche aufweist, und mindestens einer zweiten Schicht, welche Wasser aufnehmen kann und unter Formerhalt komprimierbar ist, wobei das Substrat auf der vom Schleifkorn abgewandten Seite selbsthaftend ist.Surprisingly, the above object has been achieved by a grinding tool comprising resin bonded abrasive grain selected from the group consisting of diamond and cubic boron nitride, and a substrate having a first abrasive grain bearing layer which is water permeable and has a planar surface and at least one second layer , which can absorb water and is compressible with retention of shape, wherein the substrate is self-adhesive on the side facing away from the abrasive grain.

Beim erfindungsgemässen Schleifwerkzeug ist das Schleifkorn vollflächig aufgetragen, allerdings kommt zunächst nur jenes Korn zum Einsatz, welches auf den herausragenden Teilen der ersten Schicht (Stege)sitzt.When grinding tool according to the invention, the abrasive grain is applied over the entire surface, but initially only that grain is used, which sits on the protruding parts of the first layer (webs).

Das erfindungsgemässe Schleifwerkzeug zeichnet sich aufgrund der Beschaffenheit des Substrats durch eine hohe Flexibilität aus. Das auf der Oberfläche harzgebundene Schleifkorn kann somit während des Schleifvorgangs aus dem Werkzeug herausgedrückt werden. Dies führt zu erhöhten Standzeiten sowie zu einer schonenden Zerspanung des bearbeiteten Produkts. Mit angepasstem Schleifdruck können somit auch die tiefer liegenden Schleifpartikel des komprimierbaren Schleifwerkzeugs gezielt zum Einsatz gebracht werden.The inventive grinding tool is characterized by a high degree of flexibility due to the nature of the substrate. The resin-bonded abrasive grain on the surface can thus be pushed out of the tool during the grinding process. This leads to increased service life and gentle machining of the processed product. With adapted grinding pressure, the lower-lying abrasive particles of the compressible grinding tool can thus be used selectively.

Beim Nassschliff wird das dem Schleifwerkzeug zugeführte Wasser in der zweiten, wasseraufnehmbaren und unter Formerhalt komprimierbaren Schicht zumindest teilweise zurückgehalten. Der während des Schleifens anfallende Schleifstaub kann auf einfache Weise dadurch entfernt werden, dass man das Schleifwerkzeug zusammendrückt. Hierbei wird das in der zweiten Schicht enthaltene Wasser herausgedrückt, gelangt aufgrund der Permeabilität der korntragenden Schicht zur Oberfläche des Schleifwerkzeugs und spült den auf oder in der Oberfläche des Schleifwerkzeugs befindlichen Schleifstaub fort. Das Schleifwerkzeug kann im Anschluss an diesen einfach und schnell durchführbaren Vorgang wieder problemlos verwendet werden.In wet grinding, the water supplied to the grinding tool is at least partially retained in the second, water-absorbable and compressible layer. The while The grinding dust arising from grinding can be easily removed by squeezing the grinding tool. In this case, the water contained in the second layer is pushed out, passes to the surface of the grinding tool due to the permeability of the grain-carrying layer and rinses the grinding dust located on or in the surface of the grinding tool. The grinding tool can be easily used again following this simple and fast process.

Dadurch wird ein Schleifen ohne Schleifspuren (Swirls) mit überraschend hohen Standzeiten erreicht. Die Standzeiten des erfindungsgemässen Schleifwerkzeugs übertreffen die Standzeiten herkömmlicher vollflächiger Schleifwerkzeuge um einen Faktor von etwa 20 bis 100.As a result, grinding without grinding marks (swirls) is achieved with surprisingly long service life. The service lives of the grinding tool according to the invention exceed the service lives of conventional full-surface grinding tools by a factor of about 20 to 100.

Als Schleifkorn kann natürlicher oder künstlicher Diamant oder kubisches Bornitrid verwendet werden, wobei Diamant nicht zuletzt aus ökonomischen Gründen bevorzugt ist. Gemäss der vorliegenden Erfindung weist das Schleifwerkzeug vorzugsweise eine Menge an Schleifkorn auf seiner Oberfläche von 10 bis 50 g/m2, bevorzugt von 10 bis 30 g/m2 (letzteres entspricht 50 bis 150 Karat/m2 Diamant) auf.As the abrasive grain, natural or artificial diamond or cubic boron nitride may be used, with diamond being preferred not least for economic reasons. According to the present invention, the grinding tool preferably has an amount of abrasive grain on its surface of 10 to 50 g / m 2 , preferably 10 to 30 g / m 2 (the latter corresponds to 50 to 150 carats / m 2 of diamond).

Gemäss der vorliegenden Erfindung wird das Schleifkorn über ein Harz-Bindemittel an das Substrat gebunden. Metallgebundene Schleifmittel sind von der vorliegenden Erfindung nicht umfasst. Die Verwendung eines sogenannten harzgebundenen Schleifkorns oder "Resin-Bond-Diamond" hat den Vorteil, dass es eine erhöhte Nachschärfungstendenz(engl. high friability)aufweist.According to the present invention, the abrasive grain is bonded to the substrate via a resin binder. Metal bonded abrasives are not included in the present invention. The use of a so-called resin-bonded abrasive grain or "Resin-Bond-Diamond" has the advantage that it has an increased Nachharrencing tendency (English high friability).

Erfindungsgemäss können alle herkömmlichen Harz-Bindemittel eingesetzt werden, beispielsweise Phenolharze, Melaminharze, Harnstoffharze, Epoxydharze, Polyesterharze, Polyacrylatharze oder Polyurethanharze.According to the invention, it is possible to use all conventional resin binders, for example phenolic resins, melamine resins, urea resins, Epoxy resins, polyester resins, polyacrylate resins or polyurethane resins.

Gemäss einer bevorzugten Ausführungsform ist es besonders vorteilhaft, wasserlösliche Harze wie beispielsweise Phenolharze zu verwenden, die im ungehärteten Zustand wasserlöslich sind. Die Verwendung wasserlöslicher Harze erlaubt eine einfache Zurückgewinnung des Schleifkorns aus Abfällen, die bei Auftragverfahren wie beispielsweise Aufsprühen anfallen können. Der Rückstand aus Schleifkorn und ungehärtetem Harz wird einfach in eine wässrige, vorzugsweise alkalische Lösung gegeben und das Harz sauber und effizient abgetrennt. Dadurch kann das Auftragverfahren schneller durchgeführt werden, ohne dass hiermit ökonomische Nachteile (Verlust an Schleifkorn) verbunden wären.According to a preferred embodiment, it is particularly advantageous to use water-soluble resins, such as phenolic resins, which are water-soluble in the uncured state. The use of water-soluble resins allows easy recovery of the abrasive grain from wastes that may be incurred in application processes such as spraying. The residue of abrasive grain and uncured resin is simply placed in an aqueous, preferably alkaline, solution and the resin is separated cleanly and efficiently. As a result, the application process can be carried out more quickly, without any associated economic disadvantages (loss of abrasive grain).

Wie vorstehend ausgeführt umfasst das Substrat des erfindungsgemässen Schleifwerkzeugs mindestens zwei verschiedene Schichten.As stated above, the substrate of the grinding tool according to the invention comprises at least two different layers.

Die erste Schicht trägt das Schleifkorn, welches über das vorstehend beschriebene Harz-Bindemittel an diese erste Schicht gebunden ist. Die erste Schicht muss wasserdurchlässig sein, damit das in der zweiten Schicht zurückgehaltene Wasser durch diese Schicht hindurchtreten und in auf oder auf dieser abgelagerten Schleifstaub wegspülen kann. Die erste Schicht dient auch zur Verstärkung der zweiten Schicht. Sie muss aber andererseits eine ausreichende Flexibilität aufweisen, damit eine Komprimierung der zweiten Schicht zum Herausdrücken des darin zurückgehaltenen Wassers unter Beibehaltung der Form des Schleifwerkzeugs möglich ist.The first layer carries the abrasive grain which is bonded to this first layer via the resin binder described above. The first layer must be permeable to water so that the water retained in the second layer can pass through that layer and wash away in or on top of deposited abrasive dust. The first layer also serves to reinforce the second layer. On the other hand, however, it must have sufficient flexibility to allow compression of the second layer to squeeze out the water retained therein while maintaining the shape of the grinding tool.

Es hat sich gezeigt, dass die vorstehenden Anforderungen besonders gut von Schichten erfüllt sind, die aus einem Gewirke wie einer Charmeuse oder einem 1,4-Gewebe (Gewebe, in welchem Schussfäden und Kettfäden im Verhältnis 1:4 vorhanden sind) aufgebaut sind. Es können hierbei gängige Gewirke oder 1,4-Gewebe verwendet werden. Ein Beispiel sind die "Technical Fabrics for abrasive disks" der Firma Sitip (Italien) (Polyamid, dtex: 44). Es ist aber beispielsweise auch möglich, dass die erste Schicht aus einem Velours, aus spunn bonded-Vliesen, Nadelfliessen oder aus einem perforierten vollflächigen Träger gefertigt ist.It has been found that the above requirements are particularly well met by layers consisting of a knitted fabric such as a Charmeuse or a 1,4-fabric (fabric in which Weft threads and warp threads in the ratio 1: 4 are present) are constructed. It can be used here common knitted fabric or 1,4-fabric. An example are the "Technical Fabrics for abrasive disks" from Sitip (Italy) (polyamide, dtex: 44). However, it is also possible, for example, that the first layer is made of a suede, of spun-bonded nonwovens, needle flow or of a perforated full-surface support.

Um ein möglichst genaues Schleifen zu erreichen, muss die das Schleifmittel tragende Oberfläche der ersten Schicht plan sein. Gemäss der vorliegenden Erfindung soll unter "plan" verstanden werden, dass aus der Schicht hervorstehende Teile (Stege) der ersten Schicht auf im Wesentlichen gleicher Höhe liegen (im Rahmen üblicher Messgenauigkeit).To achieve the most accurate grinding possible, the surface of the first layer carrying the abrasive must be flat. According to the present invention, "planar" is understood to mean that parts (webs) of the first layer protruding from the layer are at essentially the same height (within the scope of customary measuring accuracy).

Erfindungsgemäss weist die erste Schicht in der Regel eine Dicke von 0,01 cm bis 0,1 cm auf. Die gewählte Dicke ist vom Anforderungsprofil abhängig und kann vom Fachmann ohne Probleme entsprechend bestimmt und eingestellt werden.According to the invention, the first layer usually has a thickness of 0.01 cm to 0.1 cm. The selected thickness depends on the requirement profile and can be determined and adjusted by the skilled person without any problems.

Das erfindungsgemässe Schleifwerkzeug umfasst mindestens eine zweite Schicht. Die zweite Schicht muss in der Lage sein, Wasser aufnehmen und zurückhalten zu können. Weiterhin muss die zweite Schicht komprimierbar sein, so dass das darin enthaltene Wasser aus dieser Schicht heraus und durch die erste Schicht hindurch gedrückt werden kann. Dabei soll aber die zweite Schicht beziehungsweise das gesamte Schleifwerkzeug formtreu sein, d.h. seine ursprüngliche Form nach Beendigung externer Krafteinwirkung wieder einnehmen. Auf diese Weise wird gewährleistet, dass das erfindungsgemässe Schleifwerkzeug erneut auf gleiche Weise verwendet und von Schleifstaub befreit werden kann.The grinding tool according to the invention comprises at least one second layer. The second layer must be able to absorb and retain water. Furthermore, the second layer must be compressible so that the water contained therein can be pushed out of this layer and through the first layer. In this case, however, the second layer or the entire grinding tool should be dimensionally true, ie assume its original shape after completion of external force again. In this way, it is ensured that the inventive grinding tool can be used again in the same way and can be freed from grinding dust.

Es hat sich gezeigt, dass herkömmliche weiche Schaumstoffe die vorstehenden Anforderungen sehr gut erfüllen. Gemäss einer bevorzugten Ausführungsform besteht somit die zweite Schicht des Substrats des erfindungsgemässen Schleifwerkzeugs aus einem weichen Schaumstoff. Dem Fachmann sind weiche Schaumstoffe bekannt. Als Beispiel sei offenzelliger Polyether-PU-Schaum genannt.It has been found that conventional soft foams meet the above requirements very well. According to a preferred embodiment, the second layer of the substrate of the grinding tool according to the invention thus consists of a soft foam. The skilled person is aware of soft foams. An example is open-celled polyether PU foam.

Gemäss einer weiteren Ausführungsform kann die zweite Schicht aus mehreren, vorzugsweise zwei Unterschichten bestehen. Ein Beispiel hierfür sind die "3D Spacer fabrics" der Firma Scott & Fyve (Grossbritannien), ein aus zwei miteinander untrennbar verwobenen Gewebeschichten bestehendes Produkt. Obwohl in diesem Beispiele die Unterschichten nicht aus Schaumstoff bestehen, können selbstverständlich auch zwei Unterschichten aus Schaumstoff eingesetzt werden.According to a further embodiment, the second layer can consist of several, preferably two, sublayers. An example of this is the "3D spacer fabrics" from Scott & Fyve (Great Britain), a product consisting of two inseparably interwoven fabric layers. Although in this example the backsheets are not made of foam, it is of course also possible to use two foam underlays.

Erfindungsgemäss weist die zweite Schicht (oder die Gesamtheit an Unterschichten, welche zusammen die zweite Schicht bilden) in der Regel eine Dicke von 0,2 cm bis 1 cm auf. Die gewählte Dicke ist vom Anforderungsprofil abhängig und kann vom Fachmann ohne Probleme entsprechend bestimmt und eingestellt werden.According to the invention, the second layer (or the entirety of sub-layers, which together form the second layer) generally has a thickness of 0.2 cm to 1 cm. The selected thickness depends on the requirement profile and can be determined and adjusted by the skilled person without any problems.

Die erste und zweite Schicht können auf herkömmliche und bekannte Weise miteinander verbunden werden, beispielsweise durch Kleben, Flammkaschieren oder über eine Klettverbindung. In letzterem Fall ist nur die erste, korntragende Schicht mit einem Velours kaschiert. Die zweite Schicht liegt dann in Form eines wieder verwendbaren Zwischenpads vor. Die Verbindung muss aber auf jeden Fall wasserdurchlässig sein.The first and second layers may be bonded together in a conventional and known manner, for example by gluing, flame laminating or Velcro bonding. In the latter case, only the first, grain-bearing layer is laminated with a velor. The second layer is then in the form of a reusable intermediate pad. The connection must, however, be permeable to water in any case.

Während des Einsatzes des erfindungsgemässen Schleifwerkzeugs sind die beiden Schichten miteinander verbunden. Es ist aber sowohl möglich, beide Schichten permanent miteinander zu verbinden, als auch die Verbindung erst unmittelbar vor dem Einsatz herzustellen. In letzterem Fall ist es möglich, die zweite Schicht auf der Halterung eines Schleifgeräts bereitzustellen und vor dem Einsatz mit der Einheit aus erster Schicht und darauf befindlichem Schleifkorn zu verbinden - vorteilhaft über eine lösbare Verbindung wie eine Klettverbindung. Dadurch ist auch ein einfacher Austausch der ersten, das Schleifkorn tragenden Schicht möglich.During use of the grinding tool according to the invention, the two layers are joined together. But it is also possible to connect both layers permanently, as well as to make the connection only immediately before use. In the latter case, it is possible to provide the second layer on the support of a sander and to connect prior to use with the first layer unit and abrasive grain thereon - advantageously via a releasable connection such as a Velcro connection. As a result, a simple replacement of the first, the abrasive grain bearing layer is possible.

Demzufolge betrifft die vorliegende Erfindung auch die Verwendung einer Einheit aus einer Schicht, welche wasserdurchlässig ist und eine plane Oberfläche aufweist und harzgebundenes Schleifkorn ausgewählt aus der Gruppe bestehend aus Diamant und kubischem Bornitrid trägt, in einem vorstehend beschriebenen erfindungsgemässen Schleifwerkzeug. Die vorliegende Erfindung betrifft auch eine Einheit aus einer Schicht, welche Wasser aufnehmen kann, unter Formerhalt komprimierbar ist und auf mindestens einer Seite eine wasserdurchlässige, selbsthaftende Schicht aufweist, insbesondere zur Verwendung in einem vorstehend beschriebenen erfindungsgemässen Schleifwerkzeug.Accordingly, the present invention also relates to the use of a unit of a layer which is permeable to water and has a planar surface and resin-bonded abrasive grain selected from the group consisting of diamond and cubic boron nitride, in a grinding tool according to the invention described above. The present invention also relates to a unit comprising a layer which can absorb water, is compressible under retention of form and has a water-permeable, self-adhering layer on at least one side, in particular for use in a grinding tool according to the invention described above.

Um das erfindungsgemässe Schleifwerkzeug auf einer Halterung eines Schleifgeräts befestigen zu können, ist die Oberfläche der zweiten Schicht, welche von der die erste Schicht tragenden Oberfläche abgewandt ist, so ausgestaltet, dass sie selbsthaftend ist. Dies kann dadurch erfolgen, dass auf der entsprechenden Oberfläche der zweiten Schicht eine Schicht aus herkömmlichen Velours (beispielsweise aus Nylon) oder Klett oder eine Klebstoffschicht bereitgestellt ist. Derartige Schichten und Arten Ihres Aufbringens sind aus dem Stand der Technik bekannt und bedürfen keiner weiteren Erläuterung.In order to be able to fasten the grinding tool according to the invention to a holder of a grinding device, the surface of the second layer, which faces away from the surface carrying the first layer, is designed such that it is self-adhesive. This can be done by providing on the corresponding surface of the second layer a layer of conventional suede (for example made of nylon) or Velcro or an adhesive layer. Such layers and ways of their application are known in the art and need no further explanation.

Das erfindungsgemässe Schleifwerkzeug eignet sich insbesondere zur Bearbeitung von Oberflächen, welche Keramikbestandteile enthalten. Beispielhaft seien als zu behandelnde Oberflächenmaterialien genannt: Keramik-Oberflächen per se, keramische Lacke auf Holz (z.B. versiegelte Parkettböden), Technische Gläser, Glas, Komposit-Werkstoffe auf Basis von Stein oder Mineralien, faserhaltige Komposite wie Glasfaserkunststoffe (GFKs) oder Kohlefaserkunststoffen (CFKs) oder Aramidfaser-Kunststoffen, oder "superharte" Lacke wie Epoxylacke.The inventive grinding tool is particularly suitable for processing surfaces containing ceramic components. Examples of surface materials to be treated are: ceramic surfaces per se, ceramic lacquers on wood (eg sealed parquet floors), technical glass, glass, composite materials based on stone or minerals, fibrous composites such as fiberglass plastics (GRPs) or carbon fiber plastics (CFKs) ) or aramid fiber plastics, or "super hard" paints such as epoxy paints.

Das erfindungsgemässe Schleifwerkzeug wird hierbei vorzugsweise in Form von Scheiben oder Streifen bereitgestellt, um auf herkömmlichen Hand-Schleifmaschinen wie z.B. Excenterschleifmaschinen aufgebracht zu werden.The abrasive tool of the invention is preferably provided in the form of discs or strips for use on conventional hand-held grinders, e.g. Excenterschleifmaschinen be applied.

Das erfindungsgemässe Schleifwerkzeug kann hergestellt werden, indem auf die erste Schicht des Substrats das Schleifkorn mit dem Harz-Bindemittel durch ein druckfreies Beschichtungsverfahren aufgebracht wird. Bekannte druckfreie Beschichtungsverfahren sind beispielsweise Sprühbeschichtung, Antauch-Verfahren (Dip coating), air knife/Luftbürste oder Transferverfahren.The abrasive tool of the invention can be produced by applying to the first layer of the substrate the abrasive grain with the resin binder by a pressure-free coating process. Known pressure-free coating methods are, for example, spray coating, dip coating, air knife or transfer method.

Wie vorstehend bereits geschildert ist es hierbei besonders vorteilhaft, wenn man ein im ungehärteten Zustand wasserlösliches Harz-Bindemittel einsetzt. Es ist dann nicht notwendig, bei dem Auftragverfahren besondere Sorgfalt dahingehend walten zu lassen, dass das teuere Schleifkorn möglichst vollständig auf die Substratoberfläche gelangt. Man kann vielmehr schnellere Verfahren wie ein Übersprühen des Substrats (über die zu beschichtende Oberfläche hinaus) durchführen, wenn man neben und unterhalb des zu beschichtenden Substrats eine Auffangvorrichtung wie eine Wanne bereitstellt. Das dort gesammelte Gemisch aus Schleifkorn und ungehärtetem Bindemittel kann anschliessend leicht getrennt werden, indem man eine wässrige, bevorzugt alkalische Lösung, insbesondere im pH-Bereich von pH = 10, zusetzt und das Bindemittel darin auflöst. Das Schleifkorn kann dann problemlos abgetrennt (z.B. abfiltriert) werden.As already described above, it is particularly advantageous to use a water-soluble resin binder in the uncured state. It is then not necessary to take special care in the application process to the effect that the expensive abrasive grain reaches the substrate surface as completely as possible. Rather, faster processes such as over-spraying the substrate (beyond the surface to be coated) can be accomplished by providing a catcher such as a pan adjacent and below the substrate to be coated. The mixture of abrasive grain and uncured binder collected there can then be easily separated be by adding an aqueous, preferably alkaline solution, in particular in the pH range of pH = 10, and the binder dissolves therein. The abrasive grain can then be easily separated (eg filtered off).

Die Oberflächenbehandlung mit den erfindungsgemässen Schleifwerkzeugen wird im Nassschliffverfahren durchgeführt, vorzugsweise mit einem Handzerstäuber. Mit dem Handzerstäuber fügt der Fachmann üblicherweise gerade so viel Wasser hinzu, dass nicht die gesamte Oberfläche des Werkstücks nass ist, sondern dass gerade die zu bearbeitende Fläche soweit befeuchtet ist, dass das Schleifwerkzeug die Flüssigkeit im komprimierbaren Teil wieder aufnehmen kann. Nach Bedarf spült der Fachmann den komprimierbaren Teil mittels leichten Drucks wieder aus und fügt neues Wasser hinzu.The surface treatment with the grinding tools according to the invention is carried out by wet grinding, preferably with a hand sprayer. With the manual atomizer, the expert usually adds just enough water that not the entire surface of the workpiece is wet, but that just the surface to be treated is moistened so far that the grinding tool can absorb the liquid in the compressible part again. If necessary, the skilled person rinses out the compressible part by applying slight pressure and adds new water.

Das erfindungsgemässe Schleifwerkzeug wird nachstehend anhand von nicht einschränkenden Figuren und Beispielen näher erläutert.The inventive grinding tool will be explained in more detail below with reference to non-limiting figures and examples.

Es zeigt:

Fig. 1
eine schematische Ansicht einer Ausführungsform des erfindungsgemässen Schleifwerkzeugs
It shows:
Fig. 1
a schematic view of an embodiment of the inventive grinding tool

In Fig. 1 ist ein erfindungsgemässes Schleifwerkzeug 1 gezeigt. Das Schleifwerkzeug weist harzgebundenen Diamant 2 als Schleifkorn auf. Das Bindemittel-Harz ist vorzugsweise ein Phenolharz. Der Diamant befindet sich auf den Erhebungen (Stegen) der ersten Schicht 3, vorzugsweise aus einem Gewirke, Die erste Schicht ist wasserdurchlässig und weist eine plane Oberfläche auf. Die erste Schicht befindet sich auf einer zweiten Schicht 4, welche Wasser aufnehmen kann und unter Formerhalt komprimierbar ist. Vorzugsweise besteht diese zweite Schicht 5 aus einem weichen Schaumstoff. Die beiden Schichten sind über eine wasserdurchlässige Verbindung miteinander verbunden. Auf der abgewandten Oberfläche der zweiten Schicht 4 befindet sich eine Schicht 5, welche dem Substrat des Schleifwerkzeugs Selbsthaftung verleiht. Vorzugsweise handelt es sich bei der Schicht 5 um eine Klettschicht oder um eine Schicht aus einem Klebstoff.In Fig. 1, an inventive grinding tool 1 is shown. The grinding tool has resin-bonded diamond 2 as abrasive grain. The binder resin is preferably a phenolic resin. The diamond is located on the elevations (webs) of the first layer 3, preferably of a knitted fabric. The first layer is permeable to water and has a flat surface. The first layer is located on a second layer 4, which can absorb water and is compressible under retention of shape. Preferably, this second layer 5 is made of a soft foam. The two layers are connected by a water-permeable connection. On the opposite surface of the second layer 4 is a layer 5, which gives the substrate of the grinding tool self-adhesion. Preferably, the layer 5 is a Velcro layer or a layer of an adhesive.

Beispielexample

Eine ca. 70%-ige Phenol-Formaldehyd-Lösung (Präkondensat) wurde zusammen mit einem handelsüblichen integrierten Netzmittel sowie mit Diamant (Korn P320) als Schleifkorn mittels Sprühauftrag auf eine gewirkte Unterlage (Charmeuse SB780, 6 mm stark, 40kg/m3 Raumgewicht, mit Velours 55g/m2) aufgebracht. Die gewirkte Unterlage war durch Flammkaschieren auf eine Schaumstoffschicht aus sich nach Kompression schnell wieder ausdehnendem Polyetherpolyol aufgebracht (analoge Ergebnisse wurden mit einer Schaumstoffschicht aus sich nach Kompression schnell wieder ausdehnendem Polyether-polyurethan erzielt). Auf der anderen Oberfläche der Schaumstoffschicht war eine Veloursschicht durch Flammkaschieren aufgetragen worden. Der Schicht-Auftrag der Schleifmittelschicht lag hierbei bei 10-40 g/m2 Bindemittel und 10-30 g/m2 Diamant. Die aufgetragene Schicht wurde anschliessend in einem Ofen bei 130°C für 2 h ausgehärtet.An approx. 70% phenol-formaldehyde solution (precondensate) together with a commercially available integrated wetting agent and with diamond (grain P320) as abrasive grain was sprayed onto a knitted surface (Charmeuse SB780, 6 mm thick, 40 kg / m 3 density , with velor 55g / m 2 ) applied. The knitted substrate was applied by flame lamination on a foam layer of rapidly expanding after compression Polyetherpolyol (analogous results were achieved with a foam layer of rapidly re-expanding after compression polyether polyurethane). On the other surface of the foam layer, a suede layer had been applied by flame laminating. The layer application of the abrasive layer here was 10-40 g / m 2 binder and 10-30 g / m 2 diamond. The applied layer was then cured in an oven at 130 ° C for 2 h.

Die Schleifleistung des so hergestellten Schleifwerkzeugs wurde anhand von 30mm-Scheiben mit einer Excenter-Schleifmaschine bestimmt. Auf einem kratzfesten keramischen Lack wurde mit dem Schleifwerkzeug während 10 s auf der gleichen Stelle geschliffen, ehe man zur Bearbeitung einer weiteren Stelle überging. Erscheint nach einer derartigen Bearbeitung die geschliffene Stelle als matt, wird die Schleifleistung als gut angesehen. Mit dem erfindungsgemässen Schleifwerkzeug war es möglich, auf diese Weise weit über 100 Stellen mit gutem Schleifergebnis zu bearbeiten.The grinding performance of the abrasive tool thus produced was determined on 30mm discs with an eccentric grinder. On a scratch-resistant ceramic lacquer was sanded with the grinding tool for 10 s in the same place, before proceeding to the processing of another place. If the ground point appears dull after such machining, the grinding performance is considered good. With the inventive grinding tool, it was possible to this Way to process well over 100 places with good sanding results.

Zum Vergleich wurde die die gleiche Schleifbehandlung mit einem herkömmlichen Schleifwerkzeug (Unterlage: wasserfeste Papier-Unterlage oder Folie) mit Aluminiumoxid oder Siliciumcarbid als Schleifkorn durchgeführt. Bereits nach der Bearbeitung von 5 Punkten war keine Mattierung der bearbeiteten Stellen mehr erkennbar. Das Schleifmittel war verbraucht.For comparison, the same abrasive treatment was carried out with a conventional abrasive tool (pad: waterproof paper base or film) with alumina or silicon carbide as the abrasive grain. Already after the processing of 5 points no matting of the worked places was more recognizable. The abrasive was used up.

Claims (18)

Schleifwerkzeug, umfassend harzgebundenes Schleifkorn ausgewählt aus der Gruppe bestehend aus Diamant und kubischem Bornitrid, und ein Substrat mit einer ersten, das Schleifkorn tragenden Schicht, welche wasserdurchlässig ist und eine plane Oberfläche aufweist, und mindestens einer zweiten Schicht, welche Wasser aufnehmen kann und unter Formerhalt komprimierbar ist, wobei das Substrat auf der vom Schleifkorn abgewandten Seite selbsthaftend ist.An abrasive tool comprising resin bonded abrasive grain selected from the group consisting of diamond and cubic boron nitride, and a substrate having a first abrasive grain bearing layer which is water permeable and has a planar surface and at least one second layer capable of absorbing water and retaining shape is compressible, wherein the substrate is self-adhesive on the side facing away from the abrasive grain. Schleifwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die erste und zweite Schicht fix oder lösbar miteinander verbunden sind.Grinding tool according to claim 1, characterized in that the first and second layer are fixed or detachably connected to each other. Schleifwerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass auf seiner Oberfläche eine Menge an Schleifkorn von 10 bis 50 g/m2, bevorzugt von 10 bis 30 g/m2 vorhanden ist.Grinding tool according to claim 1 or 2, characterized in that on its surface an amount of abrasive grain of 10 to 50 g / m 2 , preferably from 10 to 30 g / m 2 is present. Schleifwerkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Harz-Bindemittel ausgewählt ist aus der Gruppe bestehend aus Phenolharzen, Melaminharzen, Harnstoffharzen, Epoxydharzen, Polyesterharzen, Polyacrylatharzen oder Polyurethanharzen.Grinding tool according to one of claims 1 to 3, characterized in that the resin binder is selected from the group consisting of phenolic resins, melamine resins, urea resins, epoxy resins, polyester resins, polyacrylate resins or polyurethane resins. Schleifwerkzeug nach Anspruch 4, dadurch gekennzeichnet, dass das Harz-Bindemittel wasserbasiert ist.Grinding tool according to claim 4, characterized in that the resin binder is water-based. Schleifwerkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die erste Schicht aus einem Gewirke oder einem 1,4-Gewebe oder einem Velours aufgebaut ist.Grinding tool according to one of claims 1 to 5, characterized in that the first layer of a knitted or a 1,4-fabric or a suede is constructed. Schleifwerkzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die zweite Schicht aus einem weichen Schaumstoff aufgebaut ist.Grinding tool according to one of claims 1 to 6, characterized in that the second layer is constructed of a soft foam. Schleifwerkzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die zweite Schicht aus mehreren Unterschichten aufgebaut ist.Grinding tool according to one of claims 1 to 6, characterized in that the second layer is composed of a plurality of sub-layers. Schleifwerkzeug nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zum Erreichen der Selbsthaftung auf der Oberfläche der zweiten Schicht, welche von der die erste Schicht tragenden Oberfläche abgewandt ist, eine Schicht aus herkömmlichen Velours oder Klett oder eine Klebstoffschicht bereitgestellt ist.Grinding tool according to one of claims 1 to 8, characterized in that to achieve the self-adhesion on the surface of the second layer, which faces away from the surface carrying the first layer, a layer of conventional velor or Velcro or an adhesive layer is provided. Verfahren zur Herstellung eines Schleifwerkzeugs gemäss einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, das auf die erste Schicht des Substrats das Schleifkorn mit dem Harz-Bindemittel durch ein druckfreies Beschichtungsverfahren aufgebracht wird.A process for producing an abrasive tool according to any one of claims 1 to 9, characterized in that the abrasive grain with the resin binder is applied by a pressureless coating method on the first layer of the substrate. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass das druckfreie Beschichtungsverfahren ausgewählt ist aus der Gruppe bestehend aus Sprühbeschichtung, Antauch-Verfahren (Dip coating), air knife/Luftbürste oder Transferverfahren.A method according to claim 10, characterized in that the pressure-free coating method is selected from the group consisting of spray coating, dip coating, air knife / air brush or transfer method. Verfahren nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass das nicht auf das Substrat gelangende Gemisch aus Harz-Bindemittel und Schleifkorn aufgefangen und das Schleifkorn durch Lösen des Bindemittels in einer wässrigen Lösung zurückgewonnen wird.A method according to claim 10 or 11, characterized in that the not reaching onto the substrate mixture of resin binder and abrasive grain is collected and the abrasive grain is recovered by dissolving the binder in an aqueous solution. Verwendung eines Schleifwerkzeugs gemäss einem der Ansprüche 1 bis 9 zur Behandlung von Oberflächen, welche Keramikbestandteile enthalten.Use of a grinding tool according to any one of claims 1 to 9 for the treatment of surfaces containing ceramic components. Verwendung nach Anspruch 13, dadurch gekennzeichnet, dass es sich bei dem zu behandelnden Oberflächenmaterial um ein Material handelt, welches ausgewählt ist aus der Gruppe bestehend aus Keramik-Oberflächen per se, keramischen Lacken auf Holz, Technischen Gläsern, Glas, Komposit-Werkstoffen auf Basis von Stein oder Mineralien, faserhaltigen Kompositen, oder Epoxylacken.Use according to claim 13, characterized in that the surface material to be treated is a material selected from the group consisting of ceramic surfaces per se, ceramic lacquers on wood, technical glasses, glass, composite materials based on of stone or minerals, fibrous composites, or epoxy lacquers. Verwendung nach Anspruch 13 oder 14, wobei die Oberflächenbehandlung in einem Nassschliffverfahren erfolgt.Use according to claim 13 or 14, wherein the surface treatment is carried out in a wet grinding process. Verwendung einer Einheit aus einer Schicht, welche wasserdurchlässig ist und eine plane Oberfläche aufweist und harzgebundenes Schleifkorn ausgewählt aus der Gruppe bestehend aus Diamant und kubischem Bornitrid trägt, in einem Schleifwerkzeug gemäss einem der Ansprüche 1 bis 9.Use of a unit of a layer which is permeable to water and has a planar surface and carries resin-bonded abrasive grain selected from the group consisting of diamond and cubic boron nitride in a grinding tool according to one of claims 1 to 9. Einheit aus einer Schicht, welche Wasser aufnehmen kann, unter Formerhalt komprimierbar ist und auf mindestens einer Seite eine wasserdurchlässige, selbsthaftende Schicht aufweist.Unit of a layer which can absorb water, is compressible under retention of shape and has on at least one side a water-permeable, self-adhesive layer. Verwendung einer Einheit gemäss Anspruch 17 in einem Schleifwerkzeug gemäss einem der Ansprüche 1 bis 9.Use of a unit according to claim 17 in a grinding tool according to one of claims 1 to 9.
EP05111767A 2005-12-07 2005-12-07 Abrasive tool Revoked EP1797995B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP05111767A EP1797995B1 (en) 2005-12-07 2005-12-07 Abrasive tool
DE502005006896T DE502005006896D1 (en) 2005-12-07 2005-12-07 grinding tool
AT05111767T ATE425843T1 (en) 2005-12-07 2005-12-07 GRINDING TOOL
PT05111767T PT1797995E (en) 2005-12-07 2005-12-07 Abrasive tool
ES05111767T ES2322163T3 (en) 2005-12-07 2005-12-07 ABRASIVE TOOL.
PL05111767T PL1797995T3 (en) 2005-12-07 2005-12-07 Abrasive tool
DE502006008321T DE502006008321D1 (en) 2005-12-07 2006-09-12 grinding tool
EP06120537A EP1795303B1 (en) 2005-12-07 2006-09-12 Abrasive tool
EP10181613A EP2305426A1 (en) 2005-12-07 2006-09-12 Abrasive tool
AT06120537T ATE488327T1 (en) 2005-12-07 2006-09-12 GRINDING TOOL
US11/567,789 US20070128989A1 (en) 2005-12-07 2006-12-07 Novel Grinding Tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05111767A EP1797995B1 (en) 2005-12-07 2005-12-07 Abrasive tool

Publications (2)

Publication Number Publication Date
EP1797995A1 true EP1797995A1 (en) 2007-06-20
EP1797995B1 EP1797995B1 (en) 2009-03-18

Family

ID=36095668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05111767A Revoked EP1797995B1 (en) 2005-12-07 2005-12-07 Abrasive tool

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Country Link
EP (1) EP1797995B1 (en)
AT (2) ATE425843T1 (en)
DE (2) DE502005006896D1 (en)
ES (1) ES2322163T3 (en)
PL (1) PL1797995T3 (en)
PT (1) PT1797995E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110712142A (en) * 2019-09-27 2020-01-21 台山市远鹏研磨科技有限公司 Diamond polishing and grinding abrasive paper

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9407622U1 (en) * 1994-05-06 1994-08-04 Joest Peter Abrasive wheel with a contact surface for adaptation with a tool
US5565011A (en) * 1993-10-19 1996-10-15 Minnesota Mining And Manufacturing Company Abrasive article comprising a make coat transferred by lamination and methods of making same
US20030121212A1 (en) * 2001-12-28 2003-07-03 Minick Chris A. Abrasive product and method of making the same
US20050130568A1 (en) * 2002-07-26 2005-06-16 3M Innovative Properties Company Abrasive product, method of making and using the same, and apparatus for making the same
US20050262773A1 (en) * 2000-11-03 2005-12-01 3M Innovative Properties Company Flexible abrasive product and method of making and using the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5565011A (en) * 1993-10-19 1996-10-15 Minnesota Mining And Manufacturing Company Abrasive article comprising a make coat transferred by lamination and methods of making same
DE9407622U1 (en) * 1994-05-06 1994-08-04 Joest Peter Abrasive wheel with a contact surface for adaptation with a tool
US20050262773A1 (en) * 2000-11-03 2005-12-01 3M Innovative Properties Company Flexible abrasive product and method of making and using the same
US20030121212A1 (en) * 2001-12-28 2003-07-03 Minick Chris A. Abrasive product and method of making the same
US20050130568A1 (en) * 2002-07-26 2005-06-16 3M Innovative Properties Company Abrasive product, method of making and using the same, and apparatus for making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110712142A (en) * 2019-09-27 2020-01-21 台山市远鹏研磨科技有限公司 Diamond polishing and grinding abrasive paper

Also Published As

Publication number Publication date
PT1797995E (en) 2009-05-06
DE502006008321D1 (en) 2010-12-30
ES2322163T3 (en) 2009-06-17
DE502005006896D1 (en) 2009-04-30
ATE425843T1 (en) 2009-04-15
PL1797995T3 (en) 2009-08-31
EP1797995B1 (en) 2009-03-18
ATE488327T1 (en) 2010-12-15

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