EP0005161B1 - Fixation d'une feuille abrasive sur un disque de polissage - Google Patents

Fixation d'une feuille abrasive sur un disque de polissage Download PDF

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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
Application number
EP19790100824
Other languages
German (de)
English (en)
Other versions
EP0005161A2 (fr
EP0005161A3 (en
Inventor
Miksa Marton
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.)
Individual
Original Assignee
Individual
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
Priority claimed from CA302,741A external-priority patent/CA1078620A/fr
Priority claimed from DE19782820370 external-priority patent/DE2820370C2/de
Application filed by Individual filed Critical Individual
Publication of EP0005161A2 publication Critical patent/EP0005161A2/fr
Publication of EP0005161A3 publication Critical patent/EP0005161A3/xx
Application granted granted Critical
Publication of EP0005161B1 publication Critical patent/EP0005161B1/fr
Expired legal-status Critical Current

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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)

Claims (7)

1. Feuille abrasive (2) à fixer de manière détachable sur un disque de polissage (1), en particulier sur un disque de polissage flexible, entraîné en rotation, sur la face frontale duquel est appliquée une couche de substance adhésive (8) qui ne durcit pas rapidement et sur laquelle la feuille abrasive appliquée (2) adhère de manière suffisamment largement réduite pour qu'elle soit maintenue de manière sûre vis- à-vis des forces qui apparaissent dans son plan mais que par ailleurs elle puisse être détachée par arrachement du disque de polissage (1) dans sa totalité par des forces orientées perpendiculairement au plan due disque de polissage, l'adhésion de la substance adhésive (8) sur la feuille abrasive (2) étant suffisamment faible pour que, lors de l'arrachement de la feuille abrasive à partir du disque de polissage (1) la substance adhésive (8) reste totalement ou presque totalement sur le disque de polissage (1), caractérisée en ce que la face dorsale de la feuille abrasive est pourvue d'une couche séparatrice (11) qui lui adhère de manière fixe, est reliée de manière non détachable à la couche de support (9) à base de papier ou de tissu de la feuille abrasive (2) et est constituée d'une substance synthétique polymérisée, telle que du polyamide ou du copolymère d'acétate de polyvinyle.
2. Feuille abrasive suivant la revendication 1, caractérisée en ce que le copolymère d'acétate de polyvinyl est appliqué par calandrage, projection, étalement ou analogue.
3. Feuille abrasive suivant l'une des revendications 1 et 2, caractérisée en ce que, comme couche séparatrice, un utilise un revêtement de tissu tissé, de tissu non tissé ou de filet (11) qui est relié au papier (9) ou tissu de la feuille abrasive (2).
4. Feuille abrasive suivant la revendication 3, caractérisée en ce qu'une substance adhésive durcissante, qui reste cependant élastiquement déformable, est utilisée pour la liaison du revêtement (11) avec le papier (9) ou tissu de la feuille abrasive (2).
5. Feuille abrasive suivant l'une des revendications 3 et 4, caractérisée en ce que le revéte- ment est constitué d'un recouvrement de tissu non tissé produit au mouille.
6. Feuille abrasive suivant l'une des revendications 3 à 5, caractérisée en ce que la substance adhésive destinée à relier le revêtement de tissu non tissé (11) à la feuille abrasive (2) est appliquée de manière suffisamment épaisse pour que le tissu non tissé en soit imprégné.
7. Feuille abrasive suivant l'une des revendications 3 à 6, caractérisée en ce que le revêtement (11) est pourvu d'une couche séparatrice supplémentaire, en particulier à base de copolymère d'acétate de polyvinyle.
EP19790100824 1978-05-05 1979-03-19 Fixation d'une feuille abrasive sur un disque de polissage Expired EP0005161B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA302741 1978-05-05
CA302,741A CA1078620A (fr) 1978-05-05 1978-05-05 Disque auto-collant pour poncage
DE19782820370 DE2820370C2 (de) 1978-05-10 1978-05-10 Schleifblatt
DE2820370 1978-05-10

Publications (3)

Publication Number Publication Date
EP0005161A2 EP0005161A2 (fr) 1979-11-14
EP0005161A3 EP0005161A3 (en) 1979-11-28
EP0005161B1 true EP0005161B1 (fr) 1982-01-13

Family

ID=25668694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790100824 Expired EP0005161B1 (fr) 1978-05-05 1979-03-19 Fixation d'une feuille abrasive sur un disque de polissage

Country Status (4)

Country Link
EP (1) EP0005161B1 (fr)
AT (1) AT359387B (fr)
BR (1) BR7902710A (fr)
DK (1) DK146956C (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3148499A1 (de) * 1981-12-08 1983-06-23 Gerd 4475 Sögel Braasch Verfahren zum kleben von schleifmaterial auf einen schleifkoerper
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 (fr) * 1997-01-13 1998-12-04 Struers As Procede de fixation d'un agent abrasif ou de polissage, sous forme de feuille, sur un support magnetique
JP2002524282A (ja) 1998-09-08 2002-08-06 ストルエルス アクティーゼルスカブ 自己粘着性研摩および／またはつや出しシートを一時的に固定するための支持体

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE20946E (en) * 1938-12-13 Abrasive article
DE537578C (de) * 1930-04-08 1931-11-04 Fritz Szepanscky Dipl Ing Verfahren zum Befestigen von Mitteln zur Oberflaechenbehandlung, z. B. Schleifbelaegen aus Schmirgelleinen, auf ihrer Unterlage
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 (fr) * 1975-02-19 1976-09-17 Mermillod Jean Perfectionnements a l'etablissement de disques de polissage et analogues

Also Published As

Publication number Publication date
EP0005161A2 (fr) 1979-11-14
BR7902710A (pt) 1979-11-27
ATA153379A (de) 1980-03-15
DK122479A (da) 1979-11-06
DK146956B (da) 1984-02-27
EP0005161A3 (en) 1979-11-28
DK146956C (da) 1984-08-13
AT359387B (de) 1980-11-10

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