EP2239097A1 - Papier de verre - Google Patents

Papier de verre Download PDF

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Publication number
EP2239097A1
EP2239097A1 EP10159186A EP10159186A EP2239097A1 EP 2239097 A1 EP2239097 A1 EP 2239097A1 EP 10159186 A EP10159186 A EP 10159186A EP 10159186 A EP10159186 A EP 10159186A EP 2239097 A1 EP2239097 A1 EP 2239097A1
Authority
EP
European Patent Office
Prior art keywords
sandpaper
flexible layer
layer
pressure sensitive
abrasive material
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.)
Withdrawn
Application number
EP10159186A
Other languages
German (de)
English (en)
Inventor
Hendrikus Gerardus Maria Huismann
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
Application filed by Individual filed Critical Individual
Publication of EP2239097A1 publication Critical patent/EP2239097A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/007—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent between different parts of an abrasive tool

Definitions

  • the invention relates to sandpaper comprising a flexible layer and an abrasive material attached to one side of the flexible layer.
  • Sandpaper is known in a plurality of varieties. Three common groups of sandpaper are sheet like sandpaper for sanding by hand, shaped sanding paper for sanding machines and endless belt sanding paper for belt sanding machines.
  • the shaped sanding paper is commonly provided with a cloth like backing to cooperate with a velcro layer on the sanding machine. This provides a reliable attachment of the sandpaper to the sanding machine and is easily removable. The cost for such a hooks-and-loops enabled sandpaper are relatively high.
  • Sheet like sandpaper is used for sanding by hand, but is also often used on sanding machines with clamps for clamping the sandpaper.
  • the sheet like sandpaper generally has to be tailored to a suitable size. Sandpaper can be cut by scissors, but the abrasive material is bad for the cutting edges of the scissors. Tearing of sandpaper is also difficult and often results in uneven edges.
  • Sheet like sandpaper known in the prior art has a smooth back surface. As a result the sandpaper slides easily in the hand or along a sanding block around which the sandpaper is wrapped. As a result of the sliding of the sandpaper, the force applied to the sandpaper is not effectively transferred to the abrasive material and to the surface to be sanded.
  • This object of the invention is achieved with sandpaper according to the preamble, which is characterized in that an adhesive layer is arranged to the other side of the flexible layer, opposite of the abrasive material.
  • the adhesive layer makes it possible to attach the sandpaper to for example a sanding block.
  • the sandpaper is fixed to the sanding block by the adhesive layer and cannot slide or shift. As a result the force applied to the sanding block is effectively transferred to the sandpaper and to the object to be sanded.
  • the sandpaper according to the invention can also be used effectively on a sanding machine.
  • the adhesive layer provides a good connection of the sandpaper to the sanding machine, which even could make clamps on the sanding machine superfluous.
  • the adhesive layer comprises a pressure sensitive adhesive.
  • a pressure sensitive adhesive does not need an activation to be applied to a surface.
  • an activation agent such as water, a second component or heat.
  • the pressure sensitive adhesive has a low tack.
  • a pressure sensitive adhesive with lock tack can be removed easily from a surface after use, similar to post-it notes, which adhere to a surface when used and can be removed, without any residue on the surface, after use.
  • the pressure sensitive adhesive preferably comprises an elastomer based on one of the group: natural rubber, nitriles, butyl rubber, acrylics, styrene block copolymers and ethylene-vinyl acetate.
  • the pressure sensitive adhesive could comprises a tackifier, such as rosin ester, to adjust the tackiness of the adhesive layer and make it suitable for its purpose.
  • a tackifier such as rosin ester
  • a perforation is arranged in the flexible layer.
  • the perforation provides a tearing zone along which the sandpaper can be torn easily without resulting in uneven, undesired edges of the torn parts of sandpaper.
  • the perforation is line-shaped to provide a tear line for tearing the flexible layer in to two pieces.
  • the sandpaper is cut up and used in rectangular pieces.
  • a number of parallel and orthogonal line-shaped perforations are provided. These number of parallel and orthogonal line-shaped perforations makes it possible to tear out of a sheet of sandpaper a piece of desired dimensions.
  • a number of line-shaped perforations are provided to enable the tailoring of the sheet of sandpaper for use on a sanding machine, for use on a sanding block or for use as double sided sandpaper for sanding by hand.
  • the flexible layer of the sandpaper according to the invention comprises one of the group: paper, cloth (cotton, polyester, rayon) and PET film.
  • the abrasive material comprises abrading particles and a bond for bonding the abrading particles to the flexible layer.
  • the abrading particles could for example comprise one of the group: flint,garnet, emery, aluminum oxide, silicon carbide, alumina-zirconia, chromium oxide and ceramic aluminum oxide.
  • Still another embodiment of the sandpaper according to the invention comprises a second piece of sandpaper having at least a flexible layer and an abrasive material attached to one side of the flexible layer, wherein the second piece of sandpaper is attached to the adhesive layer of the sandpaper, in order to provide double sided sandpaper.
  • Figure 1 shows a perspective view of an embodiment of sandpaper 1 according to the invention.
  • This sandpaper 1 is a rectangular sheet, which is provided with parallel line-shaped perforations 2 and orthogonal line-shaped perforations 3. Along these line-shaped perforations, the sandpaper 1 can be torn in to suitable pieces.
  • FIG 2 shows a cross sectional view of the sandpaper 1.
  • the sandpaper 1 has a flexible sheet 4, which is typically paper or a cloth.
  • abrasive particles 5 On a first side of the flexible sheet 4, abrasive particles 5. These abrasive particles 5 are bound to the flexible sheet 4 by an adhesive 6 present between the particles 5.
  • the adhesive is preferably a pressure sensitive adhesive, such that the sandpaper 1 can directly be applied to a surface, without any activation of the adhesive layer 7.
  • Figure 3 shows a first application of the sandpaper 1 according to the invention.
  • a suitable piece is torn from the sheet 1 shown in figure 1 and then folded double.
  • the piece 1 is folded such that the adhesive layer 7 gets in contact with itself and that the abrasive particles 5,6 provide both outer surfaces of the folded piece.
  • Figure 4 shows a sanding block 8.
  • a suitable piece 1 of the sandpaper of the invention is provided and folded around the sides of the sanding block 8.
  • the adhesive layer 7 is brought in contact with the surface of the sanding block 8, such that the sandpaper 1 is fixed thereto.
  • the sanding block 8 is provided with a reliable sanding surface.
  • the sandpaper 1 can be removed easily from the sanding block 8 when worn and changed for a new piece.
  • Figure 5 shows a third application of the sandpaper 1 according to the invention.
  • the sandpaper 1 is applied with the adhesive layer 7 to the sole 9 of a sanding machine 10.
  • the sole 9 of the sanding machine 10 is provided with an abrasive layer 5,6, which can be removed easily after use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP10159186A 2009-04-07 2010-04-07 Papier de verre Withdrawn EP2239097A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2002726 2009-04-07

Publications (1)

Publication Number Publication Date
EP2239097A1 true EP2239097A1 (fr) 2010-10-13

Family

ID=42335175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10159186A Withdrawn EP2239097A1 (fr) 2009-04-07 2010-04-07 Papier de verre

Country Status (1)

Country Link
EP (1) EP2239097A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115056150A (zh) * 2022-07-07 2022-09-16 杭州永杰研磨材料股份有限公司 一种双面砂纸及加工设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5658184A (en) * 1993-09-13 1997-08-19 Minnesota Mining And Manufacturing Company Nail tool and method of using same to file, polish and/or buff a fingernail or a toenail
US20040020133A1 (en) * 2002-08-02 2004-02-05 3M Innovative Properties Company Abrasive articles and methods of making and using the same
DE202007010346U1 (de) * 2007-07-25 2007-09-27 Sia Abrasives Industries Ag Schleifmittel zum Behandeln von Oberflächen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5658184A (en) * 1993-09-13 1997-08-19 Minnesota Mining And Manufacturing Company Nail tool and method of using same to file, polish and/or buff a fingernail or a toenail
US20040020133A1 (en) * 2002-08-02 2004-02-05 3M Innovative Properties Company Abrasive articles and methods of making and using the same
DE202007010346U1 (de) * 2007-07-25 2007-09-27 Sia Abrasives Industries Ag Schleifmittel zum Behandeln von Oberflächen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115056150A (zh) * 2022-07-07 2022-09-16 杭州永杰研磨材料股份有限公司 一种双面砂纸及加工设备

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