EP0005161B1 - Affixing of an abrasive sheet to a grinding disc - Google Patents
Affixing of an abrasive sheet to a grinding disc Download PDFInfo
- Publication number
- EP0005161B1 EP0005161B1 EP19790100824 EP79100824A EP0005161B1 EP 0005161 B1 EP0005161 B1 EP 0005161B1 EP 19790100824 EP19790100824 EP 19790100824 EP 79100824 A EP79100824 A EP 79100824A EP 0005161 B1 EP0005161 B1 EP 0005161B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abrasive sheet
- layer
- adhesive
- accordance
- backup pad
- 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.)
- Expired
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Classifications
-
- 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
- B24D9/085—Devices for mounting sheets on a backing plate
Definitions
- the invention relates to a sanding sheet for releasably attaching to a sanding plate, in particular a flexible, rotating driven sanding plate, on the front side of which a non-rapidly curing adhesive layer is applied, to which the applied sanding sheet adheres to such an extent that it adheres to the forces occurring in its plane is reliably held, but on the other hand can be detached from the grinding plate as a whole by peeling by forces directed perpendicular to the plane of the grinding plate, the adhesion of the adhesive to the sanding sheet being so low that when the sanding sheet is peeled off from the grinding plate, the adhesive is completely or almost completely attached to it Grinding plate remains.
- a known sanding sheet of this type (US Pat. No. 3,510,992) is releasably attached to the end face of a sanding plate by means of a non-rapidly hardening adhesive which consists of a closed-cell foam rubber.
- the end face of the sanding plate is provided with projections lying in one plane, to which only the sanding sheet adheres and which covers the depressions surrounding the projections.
- the sanding sheet can be peeled off as a whole.
- the prerequisite for this, however, is that the sanding sheet is made from a sufficiently stable and tear-resistant paper or fabric. As a result, however, the cost of the sanding sheets is considerable and, since it is a wear item, is significant.
- the object of the present invention is to improve a sanding sheet of the type mentioned in such a way that on the one hand it can be produced inexpensively and inexpensively from a cheap, lobed paper as a carrier material for the grit, and yet it can be removed in one piece from the sanding plate after wear .
- an abrasive sheet of the type mentioned at the outset in that the back of the abrasive sheet is provided with a separating layer firmly adhering to it, which is inextricably linked to the paper or fabric of the abrasive sheet and which is made from a polymerized plastic such as polyamide or polyvinyl acetate Copolymer exists.
- the above-described disadvantages are overcome by the abrasive sheet designed in accordance with the invention, and an abrasive sheet is created which is inexpensive to produce, easy to attach and easy to remove, but otherwise remains effective.
- the separating layer can be applied very simply by rolling up, spraying on, brushing on or the like.
- the material of the separating layer penetrates into the paper or tissue of the sanding sheet and results in a smooth, reflective layer, to which practically no adhesive adheres when the sanding sheet is peeled off from the sanding plate, but rather remains on the sanding plate.
- the separating layer has the very desired effect of strengthening the carrier material of the grain, which enables the desired use of thin, lobed papers.
- the separating layer can also be constructed completely differently.
- a fabric, fleece or mesh covering is used as the separating layer, which is connected to the paper or fabric of the sanding sheet.
- This pad can consist of plastic as well as natural material.
- the overlay can also be provided with a polyvinyl acetate copolymer as a covering layer, although this is generally not necessary.
- a hardening but elastically deformable permanent adhesive is used to connect the pad to the abrasive sheet. Such an adhesive has found practical use well proven for permanent connection of the flexible pad with the paper of the sanding sheet.
- the support can consist of natural fibers or also of synthetic fibers, in particular of polyamide. It can also be provided, as with other Ausbowun g s-shapes, however, are made from a non volvon Najivliesbe harshung the support.
- the adhesive for connecting the fleece pad to the sanding sheet is applied so thick that the fleece is soaked.
- the intrinsically low tensile strength of the nonwoven is increased so much that it behaves similarly to a heavy-duty fabric and gives the sanding sheet high flexibility with good tensile strength.
- the costs for such a nonwoven are so low that they only increase the manufacturing costs of an abrasive sheet coated with them so insignificantly that the application-related advantages and cost savings are many times as much.
- the drawing shows a highly schematic axial section through a sanding plate and a sanding sheet which is pulled off in an edge area, while it still adheres to the sanding plate in the remaining areas.
- the grinding plate 1 On a sanding plate 1, an abrasive sheet 2 is detachably attached by gluing.
- the grinding plate 1 comprises a cylindrical, relatively thick layer 3 made of a relatively large-pored and therefore easily deformable foam.
- the cover plate 4 is provided in its central region with a projection 5, into which a metallic threaded sleeve 6 is inserted, into which a screw spindle end of a drive motor can be screwed.
- a thin, relatively fine-pored and, like layer 3, flexible, sponge-like cover layer 7 is attached to the cover plate 4 on the end face, onto which non-hardening contact adhesive 8 is applied, which has partially penetrated into the sponge-like structure of the cover layer 7.
- the layer of contact adhesive 8, which is a largely continuous and uniformly strong layer when the abrasive sheet 2 is attached and which is in the form of droplets after the abrasive sheet 2 has been detached, insofar as it is barely visible by suction into the cover layer 7, which forms Detachable connection between the sanding plate 1 and the sanding sheet 2.
- the grinding sheet 2 consists of a backing layer 9, which can consist of a fabric, but which preferably consists of a relatively thin paper, on the surface of which a grit 10 is applied as an active abrasive layer.
- a pad 11 made of a fleece, a net or a fabric is applied.
- the carrier layer 9 and the support 11 are inseparably connected to one another by gluing.
- a layer of polyvinyl acetate copolymer can also be applied to the carrier layer 9 on the rear side facing away from the grain 10. Both the pad 11 and the corresponding layer of polyvinyl acetate copolymer result in a considerable mechanical reinforcement of the sanding sheet 2.
- the sanding sheet 2 is reliably held on the sanding plate 1 by the connecting layer of contact adhesive 8 to withstand all the stresses that occur during grinding, because the stresses that occur act essentially in the direction of the plane of the layers.
- the edge is detected and a force is applied in the direction of an arrow 12, which has an essential component perpendicular to the plane of the layers, whereby the sanding sheet 2 can be separated from the sanding plate 1 in the manner indicated, in each case Separation area briefly form threads 13 from contact adhesive 8 until the contact adhesive separates from the support 11 1.
- no or very little contact adhesive remains on pad 11 after separation.
- the thickness of the layer of the contact adhesive 8 is substantially less than that shown in the drawing, so that the carrier layer 9 is in the immediate vicinity of the cover layer 7.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
Die Erfindung betrifft ein Schleifblatt zum lösbaren Befestigen an einem Schleifteller, insbesondere einem flexiblen, rotierend anzutreibenden Schleifteller, auf dessen Stirnseite eine nicht rasch aushärtende Klebstoffschicht aufgebracht ist, an der das aufgelegte Schleifblatt so weit vermindert haftet, daß es gegenüber den in seiner Ebene auftretenden Kräften zuverlässig gehalten ist, aber andererseits durch senkrecht zur Schleiftellerebene gerichtete Kräfte von dem Schleifteller als Ganzes durch Abschälen lösbar ist, wobei die Haftung des Klebers an dem Schleifblatt so gering ist, daß beim Abschälen des Schleifblattes von dem Schleifteller der Kleber völlig oder nahezu völlig an dem Schleifteller verbleibt.The invention relates to a sanding sheet for releasably attaching to a sanding plate, in particular a flexible, rotating driven sanding plate, on the front side of which a non-rapidly curing adhesive layer is applied, to which the applied sanding sheet adheres to such an extent that it adheres to the forces occurring in its plane is reliably held, but on the other hand can be detached from the grinding plate as a whole by peeling by forces directed perpendicular to the plane of the grinding plate, the adhesion of the adhesive to the sanding sheet being so low that when the sanding sheet is peeled off from the grinding plate, the adhesive is completely or almost completely attached to it Grinding plate remains.
Ein bekanntes derartiges Schleifblatt (US-PS 35 10 992) wird mittels eines nicht rasch aushärtenden Klebers and der Stirnseite eines Schleiftellers lösbar befestigt, der aus einem geschlossenporigen Schaumgummi besteht. Dabei ist die Stirnfläche des Schleiftellers mit in einer Ebene liegenden Vorsprüngen versehen, an denen allein das Schleifblatt haftet und wobei es die die Vorsprünge umgebenden Vertiefungen überdeckt. Das Schleifblatt läßt sich als Ganzes abschälen. Voraussetzung hierfür ist jedoch, daß das Schleifblatt aus einem ausreichend stabilen und reißfesten Papier oder Gewebe hergestellt ist. Dadurch ist jedoch der Kostenaufwand für die Schleifblätter erheblich und fällt, da es sich um einen Verschleißartikel handelt, deutlich ins Gewicht.A known sanding sheet of this type (US Pat. No. 3,510,992) is releasably attached to the end face of a sanding plate by means of a non-rapidly hardening adhesive which consists of a closed-cell foam rubber. The end face of the sanding plate is provided with projections lying in one plane, to which only the sanding sheet adheres and which covers the depressions surrounding the projections. The sanding sheet can be peeled off as a whole. The prerequisite for this, however, is that the sanding sheet is made from a sufficiently stable and tear-resistant paper or fabric. As a result, however, the cost of the sanding sheets is considerable and, since it is a wear item, is significant.
Der Gedanke, ein Schleifblatt durch einen nicht rasch aushärtenden-Kleber an einem Schleifteller lösbar so zu befestigen, daß das Schleifblatt nach Abnutzung als Ganzes abgeschält werden kann, ist aber schon länger bekannt (DE-PS 537 578). Auch hierbei ist jedoch stets ein ausreichend festes Trägermaterial in Form eines kräftigen Papieres oder eines Gewebes erforderlich, was nicht nur die Kosten unerwünscht erhöht sondern was auch noch zur Folge hat, daß die hierbei verwendbbaren Schleifblätter steif und nicht sehr flexibel sind, weshalb sie sich Wölbungen des zu schleifenden Gutes trotz Verwendung elastischer Schleifteller nicht so gut anpassen wie weniger feste, dünne Schleifblätter.The idea of releasably attaching a sanding sheet to a sanding plate by a non-rapidly curing adhesive so that the sanding sheet can be peeled off as a whole after wear and tear has long been known (DE-PS 537 578). Here too, however, a sufficiently strong carrier material in the form of strong paper or a fabric is always required, which not only undesirably increases the costs but also has the consequence that the sanding sheets which can be used here are stiff and not very flexible, which is why they are bulges of the material to be sanded, despite the use of elastic sanding pads, do not adjust as well as less firm, thin sanding sheets.
Schießlich ist es auch bekannt (US-RE 20 946), Schleifblätter mit einem Gewebeträger dadurch stabiler auszubilden, daß an der der Körnung abgewandten Rückseite eine Versteifung aus Papier oder dgl. aufgebracht wird. Dadurch wird eine Befestigung des Schleifblattes an einem Schleifteller mittels einer zentralen, versenkten Schraube möglich. Derartige Schleifblätter sind jedoch sehr kostenaufwendig und es hat die zentrale Befestigung durch eine Schraube auch andere Nachteile.Finally, it is also known (US-RE 20 946) to make sanding sheets with a fabric carrier more stable by applying a stiffener made of paper or the like to the back facing away from the grain. This enables the sanding sheet to be attached to a sanding plate by means of a central, countersunk screw. However, such grinding sheets are very expensive and the central attachment by a screw also has other disadvantages.
Aufgabe der vorliegenden Erfindung ist es, ein Schleifblatt der eingangs genannten Art so zu verbessern, daß es einerseits aus einem billigen, lappigen Papier als Trägermaterial für die Körnung kostengünstig und preiswert hergestellt werden kann und es dennoch nach Abnutzung in einem Stück von dem Schleifteller abziehbar ist.The object of the present invention is to improve a sanding sheet of the type mentioned in such a way that on the one hand it can be produced inexpensively and inexpensively from a cheap, lobed paper as a carrier material for the grit, and yet it can be removed in one piece from the sanding plate after wear .
Gelöst wird diese Aufgabe bei einem Schleifblatt der eingangs gennannten Art erfindungsgemäß dadurch, daß die Schleifblattrückseite mit einer fest an ihr haftenden Trennschicht versehen ist, die unlösbar mit dem Papier oder Gewebe des Schleifblattes verbunden ist und die aus einem polymerisierten Kunststoff wie Polyamid oder Polyvinyl-Azetat-Copolymer besteht.This object is achieved according to the invention in an abrasive sheet of the type mentioned at the outset in that the back of the abrasive sheet is provided with a separating layer firmly adhering to it, which is inextricably linked to the paper or fabric of the abrasive sheet and which is made from a polymerized plastic such as polyamide or polyvinyl acetate Copolymer exists.
Durch das erfindungsgemäß ausgebildete Schleifblatt sind die zuvor geschilderten Nachteile überwunden und es ist ein preiswert herstellbares, bequem zu befestigenes und einfach abzulösendes, im übrigen aber unverändert gut wirksames Schleifblatt geschaffen. Die Trennschicht läßt sich sehr einfach durch Aufrollen, Aufsprühen, Aufstreichen oder dgl. aufbringen. Das Material der Trennschicht dringt in das Papier oder Gewebe des Schleifblattes ein und ergibt eine glatte, spiegelnde Schicht, an der beim Abschälen des Schleifblattes von dem Schleifteller praktisch kein Kleber haften bleibt, der vielmehr an dem Schleifteller verbleibt. Außerdem bewirkt die Trennschicht in sehr erwünschter Weise eine Verfestigung des Trägermaterials der Körnung, wodurch die erwünschte Verwendung von dünnen, lappigen Papieren ermöglicht ist. Es versteht sich, daß auch andere, ähnliche Eigenschaften aufweisende Kunststoffmaterialien, die mit einem nicht oder nur langsam aushärtenden Kontaktkleber einerseits eine ausreichende Verbindung eingehen und andererseits eine gute Ablösbarkeit aufweisen, verwendet werden können. Das erwähnte Polyvinyl-Azetat-Copolymer hat sich in praktischen Versuchen zusammen mit dem Kleber 8054 E als sehr gut geeignet erwiesen.The above-described disadvantages are overcome by the abrasive sheet designed in accordance with the invention, and an abrasive sheet is created which is inexpensive to produce, easy to attach and easy to remove, but otherwise remains effective. The separating layer can be applied very simply by rolling up, spraying on, brushing on or the like. The material of the separating layer penetrates into the paper or tissue of the sanding sheet and results in a smooth, reflective layer, to which practically no adhesive adheres when the sanding sheet is peeled off from the sanding plate, but rather remains on the sanding plate. In addition, the separating layer has the very desired effect of strengthening the carrier material of the grain, which enables the desired use of thin, lobed papers. It goes without saying that other plastic materials which have similar properties and which, on the one hand, form an adequate bond with a non-curing or only slowly curing contact adhesive and on the other hand have good removability, can be used. The polyvinyl acetate copolymer mentioned has proven to be very suitable in practical tests together with the 8054 E adhesive.
Es hat sich bei Versuchen herausgestellt, daß nicht nur eine flüssig aufgetragene, lackartige Beschichtung geeignet ist, sondern daß die Trennschicht auch völlig anders aufgebaut sein kann. Bei einer bevorzugten Ausführungsform der Erfindung ist als Trennschicht eine Gewebe-, Vlies- oder Netzauflage verwendet, die mit dem Papier oder Gewebe des Schleifblattes verbunden ist. Dabei kann diese Auflage aus Kunststoff ebenso wie aus Naturmaterial bestehen. Zusätzlich kann die Auflage auch noch mit Polyvinyl-Azetat-Copolymer als Deckschicht versehen sein, obwohl dies im allgemeinen nicht nötig ist. Zum Verbinden der Auflage mit dem Schleifbatt ist ein aushärtender, aber elastisch verformbarer bleibender Kleber verwendet. Ein solcher Kleber hat sich im praktischen Einsatz gut zur dauerhaften Verbindung der flexiblen Auflage mit dem Papier des Schleifblattes bewährt.It has been found in tests that not only a liquid, lacquer-like coating is suitable, but that the separating layer can also be constructed completely differently. In a preferred embodiment of the invention, a fabric, fleece or mesh covering is used as the separating layer, which is connected to the paper or fabric of the sanding sheet. This pad can consist of plastic as well as natural material. In addition, the overlay can also be provided with a polyvinyl acetate copolymer as a covering layer, although this is generally not necessary. A hardening but elastically deformable permanent adhesive is used to connect the pad to the abrasive sheet. Such an adhesive has found practical use well proven for permanent connection of the flexible pad with the paper of the sanding sheet.
Die Auflage kann, wie bereits erwähnt, aus Naturfasern oder auch aus Kunststoffasern, insbesondere aus Polyamid, bestehen. Es kann jedoch auch, wie bei anderen Ausfuhrungs-formen vorgesehen, die Auflage aus einer Naßvliesbeschichtung non volvon bestehen. Dabei ist der Kleber zum Verbinden der Vliesauflage mit dem Schleifblatt so dick aufgetragen, daß das Vlies durchtränkt ist. Dadurch wird die an sich relativ geringe Reißfestigkeit des Vlieses so stark erhöht, daß es sich ähnlich wie ein hoch beanspruchbares Gewebe verhält und dem Schleifblatt eine hohe Flexibilität bei guter Reißfestigkeit verleiht. Dabei sind die Kosten für ein derartiges Vlies so gering, daß sie die Herstellkosten eines damit beschichteten Schleifblattes nur so unwesentlich erhöhen, daß die anwendungstechnischen Vorteile und Kostenersparnisse eine Vielflaches hiervon sind.As already mentioned, the support can consist of natural fibers or also of synthetic fibers, in particular of polyamide. It can also be provided, as with other Ausfuhrun g s-shapes, however, are made from a non volvon Naßvliesbeschichtung the support. The adhesive for connecting the fleece pad to the sanding sheet is applied so thick that the fleece is soaked. As a result, the intrinsically low tensile strength of the nonwoven is increased so much that it behaves similarly to a heavy-duty fabric and gives the sanding sheet high flexibility with good tensile strength. The costs for such a nonwoven are so low that they only increase the manufacturing costs of an abrasive sheet coated with them so insignificantly that the application-related advantages and cost savings are many times as much.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt und nachstehend beschrieben. Die Zeichnung zeigt einen stark schematisierten Axialschnitt durch einen Schleifteller und ein Schleifblatt das in einem Randbereich abgezeogen wird, während es inden restlichen Bereichen noch am Schleifteller haftet.In the drawing, an embodiment of the invention is shown and described below. The drawing shows a highly schematic axial section through a sanding plate and a sanding sheet which is pulled off in an edge area, while it still adheres to the sanding plate in the remaining areas.
An einem Schleifteller 1 ist ein Schleifblatt 2 durch Aufkleben lösbar befestigt. Der Schleifteller 1 umfaßt eine zylindrische, relativ dicke Schicht 3 aus einem relativ grobporigen und daher leicht verformbaren Schaumstoff. An der dem Schleifblatt 2 abgewandten Stirnseite ist diese Schicht 3 an einer setifen Abdeckplatte 4 aus Kunststoff unlösbar befestigt, beispielsweise angeklebt oder anvulkanisiert. Die Abdeckplatte 4 ist in ihrem zentralen Bereich mit einem Vorsprung 5 versehen, in den eine metallische Gewindehülse 6 eingesetzt ist, in die ein Schraubspindelende eines Antriebsmotors eindrehbar ist. Auf der Abdeckplatte 4 gegenüberliegenden Stirnseite ist an der Schicht 3 eine dünne, relativ feinporige und ebenso wie die Schicht 3 flexible, schwammartige Deckschicht 7 angebracht, auf die nichtaushärtender Kontaktkleber 8 aufgebracht ist, der teilweise in die schwammartige Struktur der Deckschicht 7 eingedrungen ist. Die Schicht aus Kontaktkleber 8, die bei angebrachtem Schleifblatt 2 eine weitgehend durchgehende und gleichmäßig starke Schicht ist und die sich nach dem Ablösen des Schleifblattes 2 in Form von Tröpfchen darstellt, soweit sie nicht durch Einsaugen in die Deckschicht 7 kaum noch sichtbar ist, bildet die lösbare Verbindung zwischen dem Schleifteller 1 und dem Schleifblatt 2.On a sanding plate 1, an
Das Schleifbatt 2 besteht aus einer Trägerschicht 9, die aus einem Gewebe bestehen kann, die jedoch vorzugs weise aus einem relativ dünnen Papier besteht, auf deren einer Oberflache eine Körnung 10 als aktive Schleifmittelschicht aufgebracht ist. Auf der gegenüberliegenden Oberfläche der Trägerschicht 9 ist eine Auflage 11 aus einem Vlies, einem Netz oder einem Gewebe aufgebracht. Die Trägerschicht 9 und die Auflage 11 sind miteinander unlösbar durch Kleben verbunden. An Stelle der Auflage 11 kann auch auf die Trägerschicht 9 an der der Körnung 10 abgewandten Rückseite eine Schicht aus Polyvinyl-Azetat-Copolymer aufgebracht sein. Sowohl die Auflage 11 als auch die entsprechende Schicht aus Polyvinyl-Azetat-Copolymer ergeben eine erhebliche mechanische Verstärkung des Schleifblattes 2.The
Das Schleifblatt 2 ist an dem Schleifteller 1 durch die verbindende Schicht aus Kontaktkleber 8 zuverlässig allen beim Schleifen auftretenden Beanspruchungen widerstehend gehalten, weil die dabei auftretenden Beanspruchungen im wesentlichen in Richtung der Ebene der Schichten wirken. Zum Abziehen des Schleifblattes 2 wird dessen Rand erfaßt und es wird eine Kraft in Richtung eines Pfeiles 12 aufgebracht, die eine wesentliche Komponente senkrecht zur Ebene der Schichten aufweist, wodurch sich das Schleifblatt 2 in der angedeuteten Weise vom Schleifteller 1 trennen läßt, wobei im jeweiligen Trennbereich sich kurzzeitig Fäden 13 aus Kontaktkleber 8 bilden, bis sich der Kontaktkleber von der Auflage 11 1 trennt. Dabei bleibt je nach Art der Auflage 11 kein oder nur sehr wenig Kontaktkleber an der Auflage 11 nach erfolgter Trennung zurück.The
Es versteht sich, daß die Dicke der Schicht des Kontaktklebers 8 wesentlich geringer ist, als in der Zeichnung dargestellt, so daß die Trägerschicht 9 sich in unmittelbarer Nachbarschaft zur Deckschicht 7 befindet.It goes without saying that the thickness of the layer of the contact adhesive 8 is substantially less than that shown in the drawing, so that the carrier layer 9 is in the immediate vicinity of the
Claims (7)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA302741 | 1978-05-05 | ||
CA302,741A CA1078620A (en) | 1978-05-05 | 1978-05-05 | Stick-on sanding disc |
DE19782820370 DE2820370C2 (en) | 1978-05-10 | 1978-05-10 | Sanding sheet |
DE2820370 | 1978-05-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0005161A2 EP0005161A2 (en) | 1979-11-14 |
EP0005161A3 EP0005161A3 (en) | 1979-11-28 |
EP0005161B1 true EP0005161B1 (en) | 1982-01-13 |
Family
ID=25668694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19790100824 Expired EP0005161B1 (en) | 1978-05-05 | 1979-03-19 | Affixing of an abrasive sheet to a grinding disc |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0005161B1 (en) |
AT (1) | AT359387B (en) |
BR (1) | BR7902710A (en) |
DK (1) | DK146956C (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3148499A1 (en) * | 1981-12-08 | 1983-06-23 | Gerd 4475 Sögel Braasch | METHOD FOR GLUING ABRASIVE MATERIAL ON A GRINDING BODY |
DE4020461C1 (en) * | 1990-06-27 | 1991-07-18 | Gerd Eisenblaetter Gmbh, 8192 Geretsried, De | Face grinding disc tool - has replaceable grinding disc with backing disc having plastics rods |
FR2758285B3 (en) * | 1997-01-13 | 1998-12-04 | Struers As | METHOD OF FIXING AN ABRASIVE OR POLISHING AGENT, IN THE FORM OF A SHEET, ON A MAGNETIC SUPPORT |
JP2002524282A (en) | 1998-09-08 | 2002-08-06 | ストルエルス アクティーゼルスカブ | Support for temporarily fixing self-adhesive abrasive and / or polished sheets |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE20946E (en) * | 1938-12-13 | Abrasive article | ||
DE537578C (en) * | 1930-04-08 | 1931-11-04 | Fritz Szepanscky Dipl Ing | Method of attaching means for surface treatment, e.g. B. Abrasive linings made of emery cloth on your backing |
US2279673A (en) * | 1940-05-25 | 1942-04-14 | Delmar E Meyer | Grinding disk |
GB1126136A (en) * | 1966-06-20 | 1968-09-05 | American Velcro Inc | Improvements in abrasive pad holding device |
US3510992A (en) * | 1967-08-18 | 1970-05-12 | Alma A Hutchins | Backing pad for sanding discs |
US3522681A (en) * | 1968-12-18 | 1970-08-04 | Gerald Lampert | Rubbing apparatus |
FR2301334A1 (en) * | 1975-02-19 | 1976-09-17 | Mermillod Jean | Fabric covered disc for polishing semiconductor plaques - has parallel line gaps in adhesive liberating air bubbles |
-
1979
- 1979-03-01 AT AT153379A patent/AT359387B/en not_active IP Right Cessation
- 1979-03-19 EP EP19790100824 patent/EP0005161B1/en not_active Expired
- 1979-03-26 DK DK122479A patent/DK146956C/en not_active IP Right Cessation
- 1979-05-04 BR BR7902710A patent/BR7902710A/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0005161A2 (en) | 1979-11-14 |
BR7902710A (en) | 1979-11-27 |
ATA153379A (en) | 1980-03-15 |
DK122479A (en) | 1979-11-06 |
DK146956B (en) | 1984-02-27 |
EP0005161A3 (en) | 1979-11-28 |
DK146956C (en) | 1984-08-13 |
AT359387B (en) | 1980-11-10 |
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