EP2170558B1 - Élément de meulage destiné à traiter des surfaces - Google Patents

Élément de meulage destiné à traiter des surfaces Download PDF

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Publication number
EP2170558B1
EP2170558B1 EP08786293.4A EP08786293A EP2170558B1 EP 2170558 B1 EP2170558 B1 EP 2170558B1 EP 08786293 A EP08786293 A EP 08786293A EP 2170558 B1 EP2170558 B1 EP 2170558B1
Authority
EP
European Patent Office
Prior art keywords
abrasive
abrasive material
carrier web
cut
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.)
Active
Application number
EP08786293.4A
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German (de)
English (en)
Other versions
EP2170558A1 (fr
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/fr
Application granted granted Critical
Publication of EP2170558B1 publication Critical patent/EP2170558B1/fr
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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.
  • the EP 1005957 B1 describes a longitudinal web of nonwoven abrasive material having a plurality of longitudinally spaced and transverse perforations. 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 attached only after the joining of carrier web and grinding layer.
  • the cut extends according to the invention continuously from a first free edge of the abrasive layer to a second free edge of the abrasive layer.
  • the free edges are example, formed by two side edges of the abrasive 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. As a result, 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 held together by the carrier web.
  • 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 for the abrasive described above is particularly advantageous, this arrangement also provides advantages for other abrasive roll form.
  • 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.
  • 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 to He testify a cut conceivable as cutting, etching, punching, etc.
  • the FIG. 1 shows a wound into a roll strip-shaped abrasive 1. It comprises a carrier web 2 made of foam, for example, a polyurethane ester foam B25H Otto Bock Schaumfstoffwerke GmbH with a thickness of 6 mm, on which a Scheif harsh 3 is glued.
  • the abrasive layer 3 here comprises an abrasive paper with a paper layer 8 and by means of a binder 11 thereon fixed abrasive particles 12.
  • the abrasive layer 3 is provided at regular intervals with transverse sections 5.
  • 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 in the Figures 2 and 3 is also shown to be arranged so that they do not completely separate the abrasive layer 3.
  • the section 5 extends from the outer surface 9 only to 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 adhesively bonded to the carrier web 2.
  • section 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 tear.
  • the carrier web 2 may also be in the form of an in FIG. 5 illustrated bow, which is composed of a plurality of abrasive sheets 7.
  • the cuts 5 form here a grid of mutually perpendicular sections 5.
  • the cuts 5 each extend from a free edge 6 to a predominantlyü berprofit free edge 6 and limit the sanding sheets. 7
  • FIG. 6 Another arrangement of the cuts 5 on a sheet shows the FIG. 6
  • the sections 5 in each case form a circular closed shape and delimit round sanding sheets 7.

Landscapes

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

Claims (9)

  1. Produit abrasif (1) pour le traitement de surfaces comprenant une feuille continue porteuse (2) et une couche abrasive (3) attachée à la feuille continue porteuse (2), le produit abrasif (1) présentant au moins une zone affaiblie (4) en forme de ligne, caractérisé en ce que la zone affaiblie (4) est une coupe (5) disposée sur au moins une surface (9 ; 10) de la couche abrasive (3), laquelle soit s'étend d'un premier bord libre (6) de la couche abrasive (3) vers un deuxième bord libre (6) de la couche abrasive (3), soit forme une forme fermée.
  2. Produit abrasif (1) selon la revendication 1, caractérisé en ce que la feuille continue porteuse (2) est une bande et la coupe (5) est disposée transversalement au sens longitudinal de la bande.
  3. Produit abrasif (1) selon la revendication 2, caractérisé en ce que la bande présente plusieurs coupes (5) espacées les unes des autres dans le sens longitudinal et qui s'étendent dans le sens transversal.
  4. Produit abrasif (1) selon la revendication 3, caractérisé en ce que l'écart entre deux coupes (5) voisines est d'environ 14 cm et la bande a une largeur d'environ 11 cm.
  5. Produit abrasif (1) selon la revendication 1, caractérisé en ce que plusieurs coupes (5) sont disposées en croix.
  6. Produit abrasif (1) selon l'une des revendications précédentes, caractérisé en ce que la coupe (5) est continue à travers la couche abrasive (3).
  7. Produit abrasif (1) selon l'une des revendications précédentes, caractérisé en ce que la feuille continue porteuse (2) prévue est un produit alvéolaire, notamment en une mousse de polyuréthane, séparable le long de la coupe (5), de préférence manuellement.
  8. Produit abrasif (1) selon l'une des revendications précédentes, caractérisé en ce que la feuille continue porteuse (2) présente une épaisseur de 1 à 10 mm, notamment de 4 à 6 mm.
  9. Produit abrasif (1) selon l'une des revendications précédentes, caractérisé en ce que la feuille continue porteuse (2) possède dans la zone affaiblie (4) une résistance à la déchirure de 10-35 N/50 mm, de préférence de 16-27 N/50 mm.
EP08786293.4A 2007-07-25 2008-07-22 Élément de meulage destiné à traiter des surfaces Active EP2170558B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200720010346 DE202007010346U1 (de) 2007-07-25 2007-07-25 Schleifmittel zum Behandeln von Oberflächen
PCT/EP2008/059557 WO2009013280A1 (fr) 2007-07-25 2008-07-22 Élément de meulage destiné à traiter des surfaces

Publications (2)

Publication Number Publication Date
EP2170558A1 EP2170558A1 (fr) 2010-04-07
EP2170558B1 true EP2170558B1 (fr) 2014-01-08

Family

ID=38542882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08786293.4A Active EP2170558B1 (fr) 2007-07-25 2008-07-22 Élément de meulage destiné à traiter des surfaces

Country Status (3)

Country Link
EP (1) EP2170558B1 (fr)
DE (1) DE202007010346U1 (fr)
WO (1) WO2009013280A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2239097A1 (fr) * 2009-04-07 2010-10-13 Hendrikus Gerardus Maria Huismann Papier de verre
KR20120082875A (ko) 2009-08-28 2012-07-24 쓰리엠 이노베이티브 프로퍼티즈 컴파니 절취선을 갖는 연마 용품
ITCR20100010U1 (it) 2010-10-12 2012-04-13 Paolo Corazzi Fibre Srl Nastro abrasivo porzionabile a strappo in singoli elementi
DE102012215914A1 (de) * 2012-09-07 2014-03-13 Robert Bosch Gmbh Schleifscheibe
DE102018201716A1 (de) * 2018-02-05 2019-08-08 Robert Bosch Gmbh Schleifmitteleinheit
CN111361135B (zh) * 2020-04-20 2022-04-19 惠州市集广新材料科技有限公司 载带加工装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9510865D0 (en) * 1995-05-30 1995-07-26 Minnesota Mining & Mfg Abrasive sheet array
EP1005957B1 (fr) * 1995-08-30 2003-07-02 Minnesota Mining And Manufacturing Company Rouleau de matériau abrasif non tissé

Also Published As

Publication number Publication date
WO2009013280A1 (fr) 2009-01-29
EP2170558A1 (fr) 2010-04-07
DE202007010346U1 (de) 2007-09-27

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