EP2170558A1 - Abrasive material for treating surfaces - Google Patents

Abrasive material for treating surfaces

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Publication number
EP2170558A1
EP2170558A1 EP08786293A EP08786293A EP2170558A1 EP 2170558 A1 EP2170558 A1 EP 2170558A1 EP 08786293 A EP08786293 A EP 08786293A EP 08786293 A EP08786293 A EP 08786293A EP 2170558 A1 EP2170558 A1 EP 2170558A1
Authority
EP
European Patent Office
Prior art keywords
abrasive
carrier web
cut
layer
cuts
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
EP08786293A
Other languages
German (de)
French (fr)
Other versions
EP2170558B1 (en
Inventor
René BRUNNER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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.)
Filing date
Publication date
Application filed by Sia Abrasives Industries AG filed Critical Sia Abrasives Industries AG
Publication of EP2170558A1 publication Critical patent/EP2170558A1/en
Application granted granted Critical
Publication of EP2170558B1 publication Critical patent/EP2170558B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B24D11/008—Finishing manufactured abrasive sheets, e.g. cutting, deforming

Definitions

  • the invention relates to an abrasive for treating surfaces having the features of the preamble of the independent claim.
  • Such abrasives are often stored in roll form or stacked as sheets. If required, individual mucous membrane leaves can be separated from the roll or from an abrasive sheet.
  • EP 1005957 Bl describes a longitudinal web of nonwoven abrasive material having a plurality of longitudinally spaced and perforations mounted transversely of the web. A user can thus easily separate individual abrasive sheets from the web along the perforations.
  • abrasive of the type mentioned, which in particular can be produced in a simple manner and the production requires as few steps.
  • the abrasive should be constructed so that in particular manually as simple as possible individual abrasive sheets can be separated. moreover the quality of the abrasive sheets or the abrasive should be influenced as little as possible by the separation.
  • the abrasive comprises a carrier web and an abrasive layer bonded to the carrier web.
  • the abrasive comprises at least one line weakened region of a cut disposed on a surface of the abrasive layer. Along the weakened areas, individual abrasive sheets can be separated from the abrasive.
  • the cut at the outer or the inner i. Carrier web side surface or be arranged on both surfaces.
  • Particularly advantageous is the arrangement of the cut on the outer surface, i. the work surface because this results in a smooth edge along the processing surface of the severed abrasive sheet.
  • the production is easy, because the cut can be mounted only after the joining of carrier web and Schleif harsh.
  • the cut extends continuously from a first free edge of the grinding layer to a second free edge of the grinding layer.
  • the free edges are formed for example by two side edges of the grinding layer or they form, for example, the edges of a recess in the grinding layer.
  • the cut may also form a closed shape such as a circle or a rectangle.
  • the closed mold thus limits an abrasive sheet which can be removed or removed from an abrasive sheet.
  • any shapes of a sanding sheet can be realized.
  • the carrier web comprises a band and the cut is arranged transversely to the longitudinal direction of the band.
  • the band has a plurality of longitudinally spaced apart transversely extending cuts.
  • the tape can be wound, for example, on a roll, from which each individual sanding sheets are separable. It is also conceivable that the roller belongs to a dispensing device for abrasive sheets, in which the desired number of abrasive sheets is wound from the roll and these are separated along the cuts.
  • the distance between two adjacent sections is preferably about 14 cm and the band is preferably about 11 cm wide. Such dimensions are particularly suitable for hand sanding applications due to their handling.
  • the cuts can also be arranged crosswise on an abrasive sheet.
  • the cuts thus form a grid which defines circumferential closed edges for the individual sanding sheets.
  • the grid may be a rectangular grid, but any angles between the cuts are conceivable.
  • the cuts may be straight or curved, according to the desired shape of the abrasive sheets.
  • the cut passes continuously through the abrasive layer.
  • tear-resistant abrasive layers can be used, which can not be separated manually.
  • the individual abrasive sheets are joined together by the carrier web. quantitative hold.
  • the cut extends into the carrier web and thus forms a departure notch.
  • the carrier web is preferably a foam which can be separated along the cut, in particular a PU foam.
  • a foam has the advantage that it is light and elastic and therefore distributes the grinding pressure during grinding and compensates for pressure peaks. At the same time, the foam is easy to tear.
  • the carrier web is preferably 1 to 10 mm thick. Particularly suitable are thicknesses of 4 to 6 mm.
  • the abrasive and especially the carrier web is preferably constructed such that the tensile strength in the weakened region is 10-35 N / 50 mm, particularly preferably 16-27 N / 50 mm (tensile force measurement / force-elongation measurement).
  • individual abrasive sheets can be manually, i. without tools such as scissors or knives, be separated from the abrasive.
  • the abrasive is preferably held in roll form in a box. It is particularly advantageous if the rollers are wound with the grinding layer inwards. This prevents the abrasion of the abrasive at the bottom of the box. The recognizability of the grain is thereby improved. While such storage is particularly advantageous for the abrasive described above, this arrangement also provides advantages for other roll-form abrasives.
  • a carrier web is provided with an abrasive layer. Before or after bonding, at least one cut is made on a surface of the abrasive layer which either extends from a first free edge of the abrasive layer to a second free edge of the abrasive layer or forms a closed mold.
  • the surface may be that side of the abrasive layer which is bonded to the carrier web. It is also possible to make a cut on both surfaces. However, the cut is preferably applied to the outer surface, that is to say the working surface. Preferably, the cut is made continuously through the entire abrasive layer so that the abrasive discs separated by the cuts are held together only by the carrier web.
  • the cut is carried out by passing the abrasive between two rolls, one roller of which is provided with one or more cutting blades arranged parallel to the axis of the rolls.
  • This method allows efficient production, especially in the case of endless abrasive webs.
  • the invention is not limited to cutting with a blade: there are many different ways of producing a cut conceivable, such as cutting, etching, punching, etc.
  • Figure 1 Perspective representation of a part of a
  • FIG. 2 shows a schematic side view of the first embodiment of an abrasive
  • FIG. 3 a schematic side view of a second embodiment of an abrasive
  • FIG. 4 shows a schematic side view of a third embodiment of an abrasive
  • FIG. 5 a perspective view of a fourth embodiment of an abrasive
  • Figure 6 Perspective view of a fifth embodiment of an abrasive.
  • FIG. 1 shows a strip-shaped abrasive material 1 wound into a roll. It comprises a carrier web 2 made of foam, for example a PUR-ester foam B25H from Otto Bock Schaumfstoffwerke GmbH with a thickness of 6 mm, to which an abrasive layer 3 is glued.
  • the abrasive layer 3 here comprises an abrasive paper with a paper layer 8 and abrasive particles 12 fixed thereon by means of a binder 11.
  • the abrasive layer 3 is provided with transverse cuts 5 at regular intervals. The cuts 5 each extend over the entire width and the cuts 5 extend continuously from the outer surface 9, the working surface, to a surface of the carrier web 2.
  • the cuts 5 divide the abrasive 1 into seamlessly joined abrasive sheets 7, which are connected by the carrier web 2.
  • the sanding sheets 7 have a size of 11.5 x 14.5 cm.
  • the cuts 5, as shown in FIGS. 2 and 3 may also be arranged such that they do not completely separate the abrasive layer 3.
  • the section 5 extends from the outer surface 9 only into the paper layer 8.
  • two sections 5 are arranged, in each case on the outer surface 9 and on the inner surface 10, which is glued to the carrier web 2.
  • FIG. 4 Another possible arrangement of the cut 5 is shown in FIG. 4: the cut 5 extends from the outer surface 9 into the carrier web 2. This arrangement facilitates the separation of the abrasive sheets 7, by also the cross-section of the carrier web 2 is weakened by the cut 5. In all embodiments, the individual abrasive sheets are held together by the carrier web. The carrier web is easy to travel.
  • the carrier web 2 can also have the shape of an arc shown in FIG. 5, which is composed of a plurality of abrasive sheets 7.
  • the cuts 5 here form a grid of sections 5 arranged at right angles to one another.
  • the cuts 5 each extend from a free edge 6 to an opposite free edge 6 and delimit the sanding sheets 7.
  • FIG. 6 Another arrangement of the cuts 5 on a sheet is shown in FIG. 6: the cuts 5 each form a circular closed shape and define round grinding sheets 7.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

An abrasive material (1) for surface treatment comprises a carrier web (2) and an abrasive layer (3) bonded to the carrier web (2). The abrasive material (1) has at least one weakened linear area (4), which comprises a cut (5) arranged on a surface (9; 10) of the abrasive layer (3). The cut either extends from a first free edge (6) of the abrasive layer (3) to a second free edge (6) of the abrasive layer (3) or forms a closed shape.

Description

Schleifmittel zum Behandeln von OberflächenAbrasive for treating surfaces
Die Erfindung betrifft ein Schleifmittel zum Behandeln von Oberflächen mit den Merkmalen des Oberbegriffs des unabhängigen Anspruchs .The invention relates to an abrasive for treating surfaces having the features of the preamble of the independent claim.
Derartige Schleifmittel werden oft in Rollenform oder als Bögen aufgestapelt gelagert. Bei Bedarf können einzelne Schleimittelblätter von der Rolle bzw. von einem Schleifmittelbogen abgetrennt werden.Such abrasives are often stored in roll form or stacked as sheets. If required, individual mucous membrane leaves can be separated from the roll or from an abrasive sheet.
Die EP 1005957 Bl beschreibt eine in Längsrichtung verlaufende Bahn aus Vliesschleifmaterial, welche mehrere in Längsrichtung beabstandete und eine in Querrichtung zur Bahn angebrachte Perforationen aufweist. Ein Benutzer kann so mühelos einzelne Schleifblätter von der Bahn längs der Perforationen abtrennen.EP 1005957 Bl describes a longitudinal web of nonwoven abrasive material having a plurality of longitudinally spaced and perforations mounted transversely of the web. A user can thus easily separate individual abrasive sheets from the web along the perforations.
Beim insbesondere manuellen Trennen einzelner Schleifblätter entlang der vorgesehenen Perforationslinie entstehen an den Rändern Ausfransungen im Bereich der Stege, welche einzelne Blätter verbinden. Besonders nachteilig sind die durch das Abreisen der Schleifblätter vorstehenden abgerissenen Stege längs der Perforationskante. Die Perforationslinien können deshalb beim Bearbeiten aufgrund dieser Stege unerwünschte Kratzer auf der zu bearbeitenden Oberfläche verursachen.In particular manual separation of individual abrasive sheets along the intended perforation created at the edges frays in the region of the webs, which connect individual leaves. Particularly disadvantageous are the torn-off webs projecting through the departure of the sanding sheets along the perforation edge. The perforation lines can therefore cause undesirable scratches on the surface to be processed during processing due to these webs.
Es ist deshalb eine Aufgabe der vorliegenden Erfindung, die Nachteile des Bekannten zu vermeiden, insbesondere eine Schleifmittel der eingangs genannten Art zu schaffen, welches insbesondere auf einfache Art und Weise herstellbar ist und die Herstellung möglichst wenige Arbeitsschritte benötigt. Das Schleifmittel soll so aufgebaut sein, dass insbesondere manuell möglichst einfach einzelne Schleifblätter abgetrennt werden können. Zudem soll die Qualität der Schleifblätter bzw. des Schleifmittels durch das Abtrennen möglichst wenig beeinflusst werden.It is therefore an object of the present invention to avoid the disadvantages of the known, in particular to provide an abrasive of the type mentioned, which in particular can be produced in a simple manner and the production requires as few steps. The abrasive should be constructed so that in particular manually as simple as possible individual abrasive sheets can be separated. moreover the quality of the abrasive sheets or the abrasive should be influenced as little as possible by the separation.
Erfindungsgemäss wird diese Aufgabe mit einem Schleifmittel mit den Merkmalen des kennzeichnenden Teils des unabhängigen Anspruchs gelöst.According to the invention this object is achieved with an abrasive having the features of the characterizing part of the independent claim.
Das Schleifmittel umfasst eine Trägerbahn und eine mit der Trägerbahn verbundene SchleifSchicht . Das Schleifmittel weist mindestens einen linienförmigen geschwächten Bereich aus einem Schnitt auf, welcher an einer Oberfläche der SchleifSchicht angeordnet ist. Entlang der geschwächten Bereiche können einzelne Schleifblätter vom Schleifmittel abgetrennt werden. Grundsätzlich kann der Schnitt an der äusseren oder der inneren, d.h. Trägerbahn seitigen Oberfläche oder an beiden Oberflächen angeordnet sein. Besonders vorteilhaft ist die Anordnung des Schnitts an der äusseren Oberfläche, d.h. der Arbeitsoberfläche, weil dies zu einem glatten Rand entlang der Bearbeitungsoberfläche des abgetrennten Schleifblatts führt. Zudem ist die Herstellung einfach, weil der Schnitt erst nach dem Zusammenfügen von Trägerbahn und SchleifSchicht angebracht werden kann.The abrasive comprises a carrier web and an abrasive layer bonded to the carrier web. The abrasive comprises at least one line weakened region of a cut disposed on a surface of the abrasive layer. Along the weakened areas, individual abrasive sheets can be separated from the abrasive. Basically, the cut at the outer or the inner, i. Carrier web side surface or be arranged on both surfaces. Particularly advantageous is the arrangement of the cut on the outer surface, i. the work surface because this results in a smooth edge along the processing surface of the severed abrasive sheet. In addition, the production is easy, because the cut can be mounted only after the joining of carrier web and Schleifschicht.
Der Schnitt erstreckt sich erfindungsgemäss durchgehend von einem ersten freien Rand der SchleifSchicht zu einem zweiten freien Rand der SchleifSchicht . Der freien Ränder werden beispielsweise durch zwei Seitenränder der SchleifSchicht gebildet oder sie bilden z.B. die Ränder einer Aussparung in der Schleifschicht. Alternativ kann der Schnitt auch eine geschlossene Form wie beispielsweise ein Kreis oder ein Rechteck bilden. Die geschlossene Form begrenzt so ein Schleifblatt, welches aus einem Schleifmittelbogen ab- bzw. heraustrennbar ist. Dadurch lassen sich beliebige Formen eines Schleifblatts realisieren. In einer bevorzugten Ausführung umfasst die Trägerbahn ein Band und der Schnitt ist quer zur Längsrichtung des Bandes angeordnet .According to the invention, the cut extends continuously from a first free edge of the grinding layer to a second free edge of the grinding layer. The free edges are formed for example by two side edges of the grinding layer or they form, for example, the edges of a recess in the grinding layer. Alternatively, the cut may also form a closed shape such as a circle or a rectangle. The closed mold thus limits an abrasive sheet which can be removed or removed from an abrasive sheet. As a result, any shapes of a sanding sheet can be realized. In a preferred embodiment, the carrier web comprises a band and the cut is arranged transversely to the longitudinal direction of the band.
Besonders bevorzugt weist das Band mehrere in Längsrichtung von einander beabstandete in Querrichtung verlaufende Schnitte auf. Das Band kann beispielsweise auf eine Rolle aufgewickelt werden, von welcher jeweils einzelne Schleifblätter abtrennbar sind. Es ist auch denkbar, dass die Rolle zu einer Dispenservorrichtung für Schleifblätter gehört, bei welcher die gewünschte Anzahl Schleifblätter von der Rolle gewickelt wird und diese längs der Schnitte getrennt werden.More preferably, the band has a plurality of longitudinally spaced apart transversely extending cuts. The tape can be wound, for example, on a roll, from which each individual sanding sheets are separable. It is also conceivable that the roller belongs to a dispensing device for abrasive sheets, in which the desired number of abrasive sheets is wound from the roll and these are separated along the cuts.
Der Abstand zweier benachbarter Schnitte beträgt vorzugsweise ca. 14 cm und das Band ist bevorzugt ca. 11 cm breit. Solche Dimensionen eignen sich aufgrund der Handlichkeit besonders gut für Handschliff-Anwendungen .The distance between two adjacent sections is preferably about 14 cm and the band is preferably about 11 cm wide. Such dimensions are particularly suitable for hand sanding applications due to their handling.
Die Schnitte können auch kreuzweise auf einem Schleifmittelbogen angeordnet sein. Die Schnitte bilden so ein Raster, welches umlaufende geschlossene Ränder für die einzelnen Schleifblätter definiert. Durch diese Schnittanordnung können auch grossflächige Schleifmittel verwendet wodurch sich die Herstellungskosten reduzieren. Das Raster kann ein Rechteckraster sein, es sind aber jedoch beliebige Winkel zwischen den Schnitten denkbar. Die Schnitte können gerade oder gekrümmt sein, entsprechend der gewünschten Form der Schleifblätter.The cuts can also be arranged crosswise on an abrasive sheet. The cuts thus form a grid which defines circumferential closed edges for the individual sanding sheets. By means of this sectional arrangement, it is also possible to use large-area abrasives, thereby reducing the production costs. The grid may be a rectangular grid, but any angles between the cuts are conceivable. The cuts may be straight or curved, according to the desired shape of the abrasive sheets.
Vorzugsweise geht der Schnitt in einer Richtung senkrecht zur Fläche der SchleifSchicht gesehen durchgehend durch die Schleifschicht. Dadurch können auch besonders reissfeste Schleifschichten verwendet werden, welche sich nicht manuell trennen lassen. Die einzelnen Schleifblätter werden durch die Trägerbahn zusam- mengehalten. Bevorzugt erstreckt sich der Schnitt bis in die Trägerbahn und bildet so eine Abreiskerbe.Preferably, as seen in a direction perpendicular to the surface of the abrasive layer, the cut passes continuously through the abrasive layer. As a result, particularly tear-resistant abrasive layers can be used, which can not be separated manually. The individual abrasive sheets are joined together by the carrier web. quantitative hold. Preferably, the cut extends into the carrier web and thus forms a departure notch.
Als Trägerbahn ist vorzugsweise ein längs des Schnitts trennbarer Schaumstoff, insbesondere ein PU Schaumstoff vorgesehen. Ein Schaumstoff hat den Vorteil, dass dieser leicht und elastisch ist und deshalb den Schleifdruck beim Schleifen verteilt und Druckspitzen ausgleicht. Gleichzeitig lässt sich der Schaumstoff einfach reissen.The carrier web is preferably a foam which can be separated along the cut, in particular a PU foam. A foam has the advantage that it is light and elastic and therefore distributes the grinding pressure during grinding and compensates for pressure peaks. At the same time, the foam is easy to tear.
Die Trägerbahn ist bevorzugt 1 bis 10 mm dick. Besonders geeignet sind Dicken von 4 bis 6 mm.The carrier web is preferably 1 to 10 mm thick. Particularly suitable are thicknesses of 4 to 6 mm.
Das Schleifmittel und vor allem die Trägerbahn ist bevorzugt derart aufgebaut, dass die Reissfestigkeit im geschwächten Bereich 10-35 N/50 mm, besonders bevorzugt 16-27 N/50 mm beträgt (Reisskraftmessung / Kraft-Dehnungs-Messung) . Dadurch können einzelne Schleifblätter manuell d.h. ohne Hilfsmittel wie Schere oder Messer, vom Schleifmittel getrennt werden.The abrasive and especially the carrier web is preferably constructed such that the tensile strength in the weakened region is 10-35 N / 50 mm, particularly preferably 16-27 N / 50 mm (tensile force measurement / force-elongation measurement). As a result, individual abrasive sheets can be manually, i. without tools such as scissors or knives, be separated from the abrasive.
Das Schleifmittel ist bevorzugt in Rollenform in einer Schachtel gehalten. Besonders vorteilhaft ist es dabei, wenn die Rollen mit der SchleifSchicht nach innen aufgewickelt sind. Dies verhindert das Scheuern des Schleifmittels am Boden der Schachtel. Die Erkennbarkeit der Körnung wird dabei verbessert. Während eine solche Aufbewahrung für das vorstehend beschriebene Schleifmittel besonders vorteilhaft ist, bietet diese Anordnung bei anderen Schleifmitteln in Rollenform ebenfalls Vorteile.The abrasive is preferably held in roll form in a box. It is particularly advantageous if the rollers are wound with the grinding layer inwards. This prevents the abrasion of the abrasive at the bottom of the box. The recognizability of the grain is thereby improved. While such storage is particularly advantageous for the abrasive described above, this arrangement also provides advantages for other roll-form abrasives.
Ein weiterer Aspekt der Erfindung betrifft ein Verfahren zur Herstellung eines vorgehend beschriebenen Schleifmittels: Eine Trägerbahn wird mit einer Schleifmittelschicht versehen. Vor oder nach dem Verbinden wird an einer Oberfläche der Schleifmittelschicht mindestens ein Schnitt angebracht, welcher sich entweder von einem ersten freien Rand der SchleifSchicht zu einem zweiten freien Rand der SchleifSchicht erstreckt oder der eine geschlossene Form bildet.Another aspect of the invention relates to a method for producing an abrasive described above: A carrier web is provided with an abrasive layer. Before or after bonding, at least one cut is made on a surface of the abrasive layer which either extends from a first free edge of the abrasive layer to a second free edge of the abrasive layer or forms a closed mold.
Die Oberfläche kann diejenige Seite der Schleifmittelschicht sein, welche mit der Trägerbahn verbunden wird. Es ist auch möglich, einen Schnitt an beiden Oberflächen anzubringen. Bevorzugt wird der Schnitt jedoch an der äusseren Oberfläche, also der Arbeitsoberfläche, angebracht. Bevorzugt wird der Schnitt durchgehend durch die ganze Schleifmittelschicht ausgeführt, sodass die durch die Schnitte getrennten Schleifscheiben nur durch die Trägerbahn zusammengehalten werden.The surface may be that side of the abrasive layer which is bonded to the carrier web. It is also possible to make a cut on both surfaces. However, the cut is preferably applied to the outer surface, that is to say the working surface. Preferably, the cut is made continuously through the entire abrasive layer so that the abrasive discs separated by the cuts are held together only by the carrier web.
Beispielsweise wird der Schnitt ausgeführt, indem das Schleifmittel zwischen zwei Walzen durchgeführt wird, von denen die eine Walze mit einer oder mehreren parallel zur Achse der Walzen angeordneten Schneidklingen versehen ist. Dieses Verfahren erlaubt insbesondere bei Endlos-Schleifmittelbahnen eine effiziente Produktion.For example, the cut is carried out by passing the abrasive between two rolls, one roller of which is provided with one or more cutting blades arranged parallel to the axis of the rolls. This method allows efficient production, especially in the case of endless abrasive webs.
Selbstverständlich ist die Erfindung nicht auf Schneiden mit einer Klinge beschränkt: es sind viele verschiedene Arten zum Erzeugen eines Schnitts denkbar wie Schneiden, Ätzen, Stanzen, etc .Of course, the invention is not limited to cutting with a blade: there are many different ways of producing a cut conceivable, such as cutting, etching, punching, etc.
Weitere Einzelmerkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung der Ausführungsbeispiele und aus den Zeichnungen. Es zeigen: Figur 1: Perspektivische Darstellung eines teilweise zu einerFurther individual features and advantages of the invention will become apparent from the following description of the embodiments and from the drawings. Show it: Figure 1: Perspective representation of a part of a
Rolle aufgewickelten ersten Ausführungsbeispiels eines Schleifmittels,Roll wound first embodiment of an abrasive,
Figur 2: Schematische Seitenansicht des ersten Ausführungsbeispiels eines Schleifmittels,2 shows a schematic side view of the first embodiment of an abrasive,
Figur 3: Schematische Seitenansicht eines zweiten Ausführungsbeispiels eines Schleifmittels,FIG. 3: a schematic side view of a second embodiment of an abrasive,
Figur 4: Schematische Seitenansicht eines dritten Ausführungsbeispiels eines Schleifmittels,4 shows a schematic side view of a third embodiment of an abrasive, FIG.
Figur 5: Perspektivische Darstellung eines vierten Ausführungsbeispiels eines Schleifmittels,FIG. 5: a perspective view of a fourth embodiment of an abrasive,
Figur 6: Perspektivische Darstellung eines fünften Ausführungsbeispiels eines Schleifmittels.Figure 6: Perspective view of a fifth embodiment of an abrasive.
Die Figur 1 zeigt ein zu einer Rolle aufgewickeltes bandförmiges Schleifmittel 1. Es umfasst eine Trägerbahn 2 aus Schaumstoff beispielsweise ein PUR-Ester Schaumstoff B25H der Otto Bock Schaumfstoffwerke GmbH mit einer Dicke von 6 mm, auf welche eine SchleifSchicht 3 geklebt ist. Die SchleifSchicht 3 umfasst hier ein Schleifpapier mit einer Papierlage 8 und mittels eines Bindemittels 11 darauf fixierten Schleifpartikeln 12. Die Schleifschicht 3 ist in regelmässigen Abständen mit in Querrichtung verlaufenden Schnitten 5 versehen. Die Schnitte 5 verlaufen jeweils über die ganze Breite und die Schnitte 5 reichen durchgehend von der äusseren Oberfläche 9, der Arbeitsoberfläche, bis eine Oberfläche der Trägerbahn 2. Die Schnitte 5 teilen das Schleifmittel 1 in nahtlos aneinander gefügte Schleifblätter 7, welche durch die Trägerbahn 2 verbunden sind. Die Schleifblätter 7 haben eine Grosse von jeweils 11,5 x 14,5 cm.FIG. 1 shows a strip-shaped abrasive material 1 wound into a roll. It comprises a carrier web 2 made of foam, for example a PUR-ester foam B25H from Otto Bock Schaumfstoffwerke GmbH with a thickness of 6 mm, to which an abrasive layer 3 is glued. The abrasive layer 3 here comprises an abrasive paper with a paper layer 8 and abrasive particles 12 fixed thereon by means of a binder 11. The abrasive layer 3 is provided with transverse cuts 5 at regular intervals. The cuts 5 each extend over the entire width and the cuts 5 extend continuously from the outer surface 9, the working surface, to a surface of the carrier web 2. The cuts 5 divide the abrasive 1 into seamlessly joined abrasive sheets 7, which are connected by the carrier web 2. The sanding sheets 7 have a size of 11.5 x 14.5 cm.
Alternativ können die Schnitte 5 wie in den Figuren 2 und 3 dargestellt ist auch so angeordnet sein, dass sie die Schleifschicht 3 nicht vollständig trennen. In Figur 2 reicht der Schnitt 5 von der äusseren Oberfläche 9 nur bis in die Papierlage 8. In Figur 3 sind zwei Schnitte 5 angeordnet, jeweils an der äusseren Oberfläche 9 und an der inneren Oberfläche 10, welche mit der Trägerbahn 2 verklebt ist.Alternatively, the cuts 5, as shown in FIGS. 2 and 3, may also be arranged such that they do not completely separate the abrasive layer 3. In FIG. 2, the section 5 extends from the outer surface 9 only into the paper layer 8. In FIG. 3, two sections 5 are arranged, in each case on the outer surface 9 and on the inner surface 10, which is glued to the carrier web 2.
Eine weitere mögliche Anordnung des Schnitts 5 ist in Figur 4 gezeigt: der Schnitt 5 geht von der äusseren Oberfläche 9 bis in die Trägerbahn 2 hinein. Diese Anordnung erleichtert das Abtrennen der Schleifblätter 7, indem auch der Querschnitt der Trägerbahn 2 durch den Schnitt 5 geschwächt ist. In allen Ausführungsbeispielen werden die einzelnen Schleifblätter durch die Trägerbahn zusammengehalten. Die Trägerbahn lässt sich einfach reis- sen .Another possible arrangement of the cut 5 is shown in FIG. 4: the cut 5 extends from the outer surface 9 into the carrier web 2. This arrangement facilitates the separation of the abrasive sheets 7, by also the cross-section of the carrier web 2 is weakened by the cut 5. In all embodiments, the individual abrasive sheets are held together by the carrier web. The carrier web is easy to travel.
Die Trägerbahn 2 kann auch in Form eines in Figur 5 dargestellten Bogens haben, welcher aus mehreren Schleifblättern 7 zusammengesetzt ist. Die Schnitte 5 bilden hier ein Raster von rechtwinklig zueinander angeordneten Schnitten 5. Die Schnitte 5 erstrecken sich jeweils von einem freien Rand 6 zu einem gegenüberliegenden freien Rand 6 und begrenzen die Schleifblätter 7.The carrier web 2 can also have the shape of an arc shown in FIG. 5, which is composed of a plurality of abrasive sheets 7. The cuts 5 here form a grid of sections 5 arranged at right angles to one another. The cuts 5 each extend from a free edge 6 to an opposite free edge 6 and delimit the sanding sheets 7.
Eine andere Anordnung der Schnitte 5 auf einem Bogen zeigt die Figur 6: die Schnitte 5 bilden jeweils eine kreisförmig geschlossene Form und begrenzen runde Schleifblätter 7. Another arrangement of the cuts 5 on a sheet is shown in FIG. 6: the cuts 5 each form a circular closed shape and define round grinding sheets 7.

Claims

Patentansprüche claims
1. Schleifmittel (1) zur Oberflächenbehandlung umfassend eine Trägerbahn (2) und eine mit der Trägerbahn (2) verbundene SchleifSchicht (3), wobei das Schleifmittel (1) mindestens einen linienförmigen geschwächten Bereich (4) aufweist, dadurch gekennzeichnet, dass der geschwächte Bereich (4) ein an wenigstens einer Oberfläche (9; 10) der SchleifSchicht (3) angeordneter Schnitt (5) ist, der sich entweder von einem ersten freien Rand (6) der SchleifSchicht (3) zu einem zweiten freien Rand (6) der SchleifSchicht (3) erstreckt oder der eine geschlossene Form bildet.An abrasive article (1) for surface treatment comprising a carrier web (2) and an abrasive layer (3) bonded to the carrier web (2), the abrasive article (1) having at least one line weakened region (4), characterized in that the weakened one Region (4) is a cut (5) arranged on at least one surface (9; 10) of the grinding layer (3) and extending either from a first free edge (6) of the grinding layer (3) to a second free edge (6). the abrasive layer (3) extends or forms a closed shape.
2. Schleifmittel (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Trägerbahn (2) ein Band ist und der Schnitt (5) quer zur Längsrichtung des Bandes angeordnet ist.2. abrasive (1) according to claim 1, characterized in that the carrier web (2) is a band and the cut (5) is arranged transversely to the longitudinal direction of the belt.
3. Schleifmittel (1) nach Anspruch 2, dadurch gekennzeichnet, dass das Band mehrere in Längsrichtung von einander beabstandete in Querrichtung verlaufende Schnitte (5) aufweist .3. abrasive (1) according to claim 2, characterized in that the strip has a plurality of longitudinally spaced from each other in the transverse direction cuts (5).
4. Schleifmittel (1) nach Anspruch 3, dadurch gekennzeichnet, dass der Abstand zweier benachbarter Schnitte (5) ca. 14 cm beträgt und das Band ca. 11 cm breit ist.4. abrasive (1) according to claim 3, characterized in that the distance between two adjacent sections (5) is about 14 cm and the band is about 11 cm wide.
5. Schleifmittel (1) nach Anspruch 1, dadurch gekennzeichnet, dass mehrere Schnitte (5) kreuzweise angeordnet sind.5. abrasive (1) according to claim 1, characterized in that a plurality of cuts (5) are arranged crosswise.
6. Schleifmittel (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schnitt (5) durchgehend durch die SchleifSchicht (3) geht. 6. abrasive (1) according to any one of the preceding claims, characterized in that the cut (5) passes through the grinding layer (3).
7. Schleifmittel (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass als Trägerbahn (2) ein längs des Schnitts (5) , bevorzugt manuell, trennbarer Schaumstoff, insbesondere aus ein PU-Schaum vorgesehen ist.7. abrasive (1) according to any one of the preceding claims, characterized in that as a carrier web (2) along the section (5), preferably manually, separable foam, in particular of a PU foam is provided.
8. Schleifmittel (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Trägerbahn (2) eine Dicke von 1 bis 10 mm, insbesondere 4 bis 6 mm aufweist.8. abrasive (1) according to any one of the preceding claims, characterized in that the carrier web (2) has a thickness of 1 to 10 mm, in particular 4 to 6 mm.
9. Schleifmittel (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Trägerbahn (2) im geschwächten Bereich (4) eine Reissfestigkeit von 10-35 N/50 mm, besonders bevorzugt von 16-27 N/50 mm hat. 9. abrasive (1) according to any one of the preceding claims, characterized in that the carrier web (2) in the weakened region (4) has a tensile strength of 10-35 N / 50 mm, more preferably 16-27 N / 50 mm.
EP08786293.4A 2007-07-25 2008-07-22 Abrasive material for treating surfaces Active EP2170558B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200720010346 DE202007010346U1 (en) 2007-07-25 2007-07-25 Abrasive for treating surfaces
PCT/EP2008/059557 WO2009013280A1 (en) 2007-07-25 2008-07-22 Abrasive material for treating surfaces

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EP2170558A1 true EP2170558A1 (en) 2010-04-07
EP2170558B1 EP2170558B1 (en) 2014-01-08

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DE (1) DE202007010346U1 (en)
WO (1) WO2009013280A1 (en)

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Publication number Priority date Publication date Assignee Title
CN111683793A (en) * 2018-02-05 2020-09-18 罗伯特·博世有限公司 Grinding tool unit

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Publication number Priority date Publication date Assignee Title
EP2239097A1 (en) * 2009-04-07 2010-10-13 Hendrikus Gerardus Maria Huismann Sandpaper
US8506364B2 (en) 2009-08-28 2013-08-13 3M Innovative Properties Company Abrasive article having a line of weakness
ITCR20100010U1 (en) 2010-10-12 2012-04-13 Paolo Corazzi Fibre Srl PORTABLE ABRASIVE RIBBON TAPE IN SINGLE ELEMENTS
DE102012215914A1 (en) * 2012-09-07 2014-03-13 Robert Bosch Gmbh Grinding disk for releasably connecting with tool retainer of e.g. vibratory or multi-grinder, has material weakening partially formed in main extending direction of break section, and introduced into base body by laser cutting process
CN111361135B (en) * 2020-04-20 2022-04-19 惠州市集广新材料科技有限公司 Carrier band processing device

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GB9510865D0 (en) * 1995-05-30 1995-07-26 Minnesota Mining & Mfg Abrasive sheet array
EP1005957B1 (en) * 1995-08-30 2003-07-02 Minnesota Mining And Manufacturing Company Nonwoven abrasive material roll

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Publication number Priority date Publication date Assignee Title
CN111683793A (en) * 2018-02-05 2020-09-18 罗伯特·博世有限公司 Grinding tool unit

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EP2170558B1 (en) 2014-01-08
WO2009013280A1 (en) 2009-01-29
DE202007010346U1 (en) 2007-09-27

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