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WO2006113374A1 - Article abrasif revêtu en forme de feuille - Google Patents

Article abrasif revêtu en forme de feuille Download PDF

Info

Publication number
WO2006113374A1
WO2006113374A1 PCT/US2006/013938 US2006013938W WO2006113374A1 WO 2006113374 A1 WO2006113374 A1 WO 2006113374A1 US 2006013938 W US2006013938 W US 2006013938W WO 2006113374 A1 WO2006113374 A1 WO 2006113374A1
Authority
WO
WIPO (PCT)
Prior art keywords
abrasive
effective
sheet
face
perforations
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.)
Ceased
Application number
PCT/US2006/013938
Other languages
English (en)
Inventor
Hitoshi Oka
Satoru Takinami
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.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of WO2006113374A1 publication Critical patent/WO2006113374A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B24D11/04—Zonally-graded surfaces

Definitions

  • the present invention relates to an abrasive article, and in particular, to a sheet-form coated abrasive article which is appropriate for repair work on automobiles.
  • a fine uniform texture (which is, in general, referred to as "scuffing") is required on the body panel surface in order to improve putty and paint adhesion. That is to say, it is desirable for the body panel surface to be free of scratches or uneven patterns. As a result, it is difficult for uniformly perforated sheet-form coated abrasive articles to provide acceptable finish in the roughening process.
  • Abrasive discs having perforations non-uniformly distributed in an annular band are also known.
  • this multi-perforated structure is also optimized in order to increase the efficiency of swarf removal.
  • the non-perforated regions are separated into a center portion and an outer periphery portion by the annular perforated band, it is difficult to carry out the roughening process using a non-perforated region.
  • FIG. 1 A cross sectional diagram showing a portion of the structure of a sheet-form coated abrasive article having perforations
  • FIG. 2 A front diagram showing a coated abrasive disc according to one embodiment of the present invention.
  • FIG. 3 A side diagram showing an example of the manner in which the coated abrasive disc of Fig. 2 is used;
  • FIG. 4 A front diagram showing a sheet-form coated abrasive disc according to another embodiment of the present invention.
  • FIG. 5 A side diagram showing an example of the manner in which the coated abrasive disc of Fig. 4 is used; Figs. 6(a), 6(b) and 6(c). Front diagrams showing sheet-form coated abrasive articles according to other embodiments of the present invention.
  • FIG. 7 A front diagram showing a portion of a sheet-form coated abrasive article according to another embodiment of the present invention.
  • FIGs. 8(a) and 8(b). Side diagrams showing examples of the manner in which a coated abrasive article of the present invention is used.
  • the present invention is provided in order to solve the above described problems with the prior art, and an object thereof is to provide a sheet-form coated abrasive article which is excellent in removing abrasive swarf, yet provide a fine, uniformly textured surface, during the roughening process of autobody repair.
  • the present invention provides a sheet-form coated abrasive article having a base, abrasive grains placed on a surface of the base and a binder for securing the abrasive grains to the surface of the base.
  • the coated abrasive article may be in sheet or disc format, wherein perforated and non-perforated surfaces are provided.
  • a coated abrasive article of the present invention has a portion for efficiently removing swarf from the abraded surface, and a portion only for sanding, that is to say, the coated abrasive article has two functions within the same surface.
  • an object to be sanded may generate a large amount of swarf, such as a repair putty or a coated film
  • the swarf is efficiently removed from the sanded surface using the perforated area of the sheet, whereas the non-perforated area of the coated abrasive sheet is used for the roughening process.
  • Fig. 1 is a cross sectional diagram showing a portion of a sheet-form coated abrasive article having perforations.
  • the surface of a base 11 is coated with a binder 12, and abrasive grains 13 are secured to base 11 by means of binder 12.
  • a number of perforations 14 are provided through the abrasive article. It is preferable for the edges of the perforations on the abrasive surface side to be rounded. This is because there is a risk that the surface to be abraded will be scratched in the case where the perforated edges of the abrasive surface are sharp or protruding.
  • the perforations are formed by carrying out a post-process on the sheet-form coated abrasive article. It is preferable that the perforating process be carried out in the direction from the abrasive surface toward the rear surface of the base. This is because the edges of the perforations on the abrasive surface side are rounded as a result of such processing.
  • the base may be perforated prior to the abrasive coating step.
  • Suitable materials used for the base include backings used in the abrasive art such as, for example, polymeric film (including primed polymeric film), cloth, paper, foraminous and non-foraminous polymeric foam, vulcanized fiber, fiber reinforced thermoplastic backing, nonwovens, treated versions thereof (e.g., with a waterproofing treatment), and combinations thereof, or any of these backings on which a metal has been vapor deposited.
  • the thickness of the base that is particularly preferable is, in general, from 10 ⁇ m to 300 ⁇ m, and more preferably from 30 ⁇ m to 150 ⁇ m.
  • Abrasive grains are secured to the surface of a base by means of a binder.
  • a binder a binder that can sufficiently secure the abrasive grains and is conventionally used in an abrasive article for the repair of automobiles is used.
  • Urea resins, phenol resins, epoxy resins, polyester resins, urethane resins, acrylate resins and composites of these can be cited as examples.
  • abrasive grains which are conventionally used for abrasive articles for the repair of automobiles are used. Examples include, aluminum oxide (such as fused alumina, ceramic alumina (including sol gel alumina) and the like), cerium oxide, zirconium oxide, other metal oxides, silicon carbide, alumina zirconia, diamond, boron nitride, silicon nitride and other metal nitrides.
  • the abrasive grains may be plastic fine grains made of polymethacrylate, polystyrene, polyolefin or the like.
  • the average grain diameter is generally from approximately 520 ⁇ m to 0.45 ⁇ m. That is to say, the average grain diameter ranges from 520 ⁇ m (JIS #36) to 0.45 ⁇ m (JIS #20000), preferably from 5 ⁇ m (JIS #3000) to 260 ⁇ m (JIS #60).
  • a coated abrasive article of the present invention may be made by known methods used in the abrasive arts, for example, applying a binder and a mineral (a make coat) to a non-perforated base, applying an optional size coat, curing, then perforating the article. Alternatively, a number of perforations are formed in the surface of a base prior to the mineral and size coating.
  • the coated abrasive article of the present invention has two kinds of effective abrasive faces on the abrasive surface, one being an effective abrasive face having a plurality of perforations, and the other being an effective abrasive face with no perforations.
  • Effective abrasive face means a region on an abrasive surface which is effective for providing an acceptable uniform finish on the repair surface.
  • Fig. 2 is a front diagram showing one embodiment of a coated abrasive article according to the present invention.
  • the abrasive disc 20 has two effective abrasive faces on the abrasive surface. It is not necessary for the abrasive disc to be circular, and it may have any form, as long as it can be mounted on a sander for use.
  • the perforated region does not provide the same abrading efficiency as the non-perforated region, and the two become effective abrasive faces which are different from each other on the abrasive surface.
  • the border between the two is defined by an imaginary line of the shortest distance connecting the perforations located at the end.
  • a first effective abrasive face 21 has a plurality of perforations and is located along the outer peripheral portion.
  • a second effective abrasive face 22 is non-perforated and is located on the center portion.
  • the area per penetration is from 0.5 mm 2 to 350 mm 2 .
  • the shape of the perforations may be any of: circular, elliptical, polygonal, fan-shaped, leaf-shaped, arched or the like.
  • the area per perforation is not greater than 0.5 mm , it becomes easy for abrading swarf in lump form to clog, lowering the efficiency of swarf removal. As a result of this, the sanding performance cannot be greatly increased.
  • the area per perforation is not less than 350 mm 2 and, particularly, when the coated abrasive article is mounted for use on a vacuum sander, the vacuum per perforation is reduced, and the abrading swarf cannot be efficiently removed. As a result of this, the sanding performance cannot be greatly increased. Here, this is not so in the area of a large perforation located in the center portion of the abrasive article in donut form. In the case where the area per perforation ranges from 1 mm to 80 mm , the sanding performance can be further increased.
  • the distance between end portions of adjacent perforations is from 1 mm to 20 mm.
  • the distance between end portions of adjacent perforations is no, greater than 1 mm, the sheet strength between the perforations is weak, causing breaking.
  • the difference in stress within the sheet causes warping in portions having many penetrations, and negatively affects the quality of the abrasive article. As a result of this, the sanding performance cannot be greatly increased.
  • the frequency at which the perforations encounter abrading swarf is low throughout the abrading movement of the abrasive article, and the abrading swarf cannot be efficiently removed.
  • FIG. 3 is a side diagram showing an example of how the above described abrasive disc is used.
  • An abrasive disc 31 is mounted on a sander 33 via a support pad 32, and is pressed at an angle against an object to be abraded 34 having a step or the like from which a large amount of abrading swarf is generated.
  • the first effective abrasive face of the abrasive disc is used. It is preferable, in the roughening process, that the second effective abrasive face is used.
  • Fig. 4 is a front diagram showing a sheet-form coated abrasive article according to another embodiment of the present invention.
  • This abrasive disc 40 has two effective abrasive faces on the abrasive surface.
  • a first effective abrasive face 41 is non-perforated and is located along the outer peripheral portion.
  • a second effective abrading face 42 has a plurality of perforations and is located on the center portion.
  • Fig. 5 is a side diagram showing an example of the manner in which the above described abrasive disc is used.
  • An abrasive disc 51 is mounted on a sander 53 via a support pad 52 and pressed against a protruding object to be abraded from which a large amount of abrading swarf is generated.
  • the second effective abrasive face of the abrasive disc is utilized. It is preferable to use the first effective abrasive face in the roughening process.
  • the number of perforations per effective abrasive face that actually makes contact with the object to be abraded is not less than 10.
  • abrading swarf can be efficiently removed from the effective abrasive face that makes contact with the object, and as a result, the sanding performance can be effectively increased.
  • Figs. 6(a) to 6(c) are front diagrams showing sheet-form coated abrasive articles according to other embodiments of the present invention. As shown in these figures, shapes of the coated abrasive articles may be polygonal including rectangle or oval.
  • the abrasive sheets of Fig. 6(a) respectively have two effective abrasive faces on the abrasive surface.
  • the first effective abrasive face has a plurality of perforations
  • the second effective abrasive face is non-perforated, or the first effective abrasive face is non-perforated, and the second effective abrasive face has a plurality of perforations.
  • the respective abrasive sheets of Fig. 6(b) have two kinds of effective abrasive faces, in such a manner that the center portion and the two end portions on the same abrasive surface have effective abrasive faces that are different from each other.
  • the first effective abrasive face has a plurality of perforations
  • the second effective abrasive face is non-perforated, or the first effective abrasive face is non-perforated, and the second effective abrasive face has a plurality of perforations.
  • the abrasive sheets of Fig. 6(c) have two effective abrasive faces which are divided into concentric forms on an abrasive surface.
  • the first effective abrasive face has a plurality of perforations
  • the second effective abrasive face is non-perforated, or the first effective abrasive face is non-perforated, and the second effective abrasive face has a plurality of perforations.
  • Fig. 7 is a front diagram showing a portion of a sheet-form coated abrasive article according to another embodiment of the present invention.
  • This abrasive sheet has an effective abrasive face having a plurality of perforations, and an effective abrasive face that is non-perforated.
  • the penetrations within the multi-penetrations structure may exist in a number of groups, as shown here.
  • Figs. 8 (a) and 8(b) are side diagrams showing examples of the manner in which the above described abrasive sheets are used.
  • the abrasive sheet may have any form, as long as it can be mounted on a hand pad or a sander for use. In Fig.
  • an abrasive sheet 71 is mounted on a hand pad 3 via a support pad 72, and pressed at an angle against an object to be abraded 74 having a step or the like.
  • an abrasive sheet 81 is mounted on a sander 83 via a support pad 82, and pressed against a protruding object to be abraded 84.
  • an effective abrasive face having a plurality of perforations is used for the abrading of a portion from which a large amount of abrading swarf is generated, and an effective abrasive face that is non-perforated can be used in the roughening work.
  • Predetermined penetrations were created in "one-touch disc UNI abrasive disc, P120" made by Sumitomo 3M Ltd., having a diameter of 125 mm, and the abrading performance on putty was evaluated.
  • PN 3965 double action sander made by Sumitomo 3M Ltd.
  • PN 5595 one touch disc pad with penetrations made by Sumitomo 3 M Ltd.
  • each of examples 1 to 11 had a non- perforated abrasive face and a perforated abrasive face on an abrasive surface.
  • the non- perforated abrasive face was located along the outer peripheral portion and the perforated abrasive face was located on the center portion.
  • comparative examples 1 and 2 had only 6 and 7 perforations which are separately located on an abrasive surface respectively.
  • An XY tester was used for the abrading evaluation, and the total amount of abrading when putty was abraded for three minutes x 3 times was compared (indicated by the ratio in the case where the amount of abrading with one-touch disc UNI having no penetrations is 100%). The results are shown in Table 1.

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

Abstract

L'article abrasif revêtu en forme de feuille selon l'invention est excellent pour supprimer les copeaux abrasifs, offrant ainsi une surface de texture uniforme et fine, pendant le processus de brossage de la réparation de carrosserie. L'article abrasif revêtu en forme de feuille ci-décrit est pourvu de deux sortes de faces abrasives efficaces sur une surface abrasive, l'une étant une face abrasive efficace pourvue d'une pluralité de perforations et l'autre une face abrasive efficace non perforée, une face abrasive efficace au niveau de la partie périphérique atteignant une extrémité de l'article abrasif.
PCT/US2006/013938 2005-04-14 2006-04-12 Article abrasif revêtu en forme de feuille Ceased WO2006113374A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-117273 2005-04-14
JP2005117273A JP2006289592A (ja) 2005-04-14 2005-04-14 シート状塗布研磨材

Publications (1)

Publication Number Publication Date
WO2006113374A1 true WO2006113374A1 (fr) 2006-10-26

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PCT/US2006/013938 Ceased WO2006113374A1 (fr) 2005-04-14 2006-04-12 Article abrasif revêtu en forme de feuille

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JP (1) JP2006289592A (fr)
WO (1) WO2006113374A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9011211B2 (en) 2010-03-29 2015-04-21 Christian T. Zyniecki Sandpaper and method of use thereof
AU2012389284B2 (en) 2012-09-05 2017-09-28 Oy, Mirka Flexible grinding product with flattened surface and method for manufacturing the same
JP2015068096A (ja) * 2013-09-30 2015-04-13 Ｊｆｅエンジニアリング株式会社 繊維強化プラスチック成型物表面の劣化層の補修方法及び補修された繊維強化プラスチック成型物
JPWO2020054823A1 (ja) * 2018-09-14 2021-08-30 株式会社フジミインコーポレーテッド 研磨パッド、研磨工具、及び研磨方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1532772A (en) * 1975-11-26 1978-11-22 Marton Miksa Vacuum sander
US4964245A (en) * 1987-12-15 1990-10-23 Gerd Braasch Grinding element for a grinding tool body
US5810650A (en) * 1995-12-29 1998-09-22 Joest; Peter Grinding member and an adapter for mounting the grinding member on a grinding machine or a grinding member holder
US20020016144A1 (en) * 2000-08-01 2002-02-07 Peter Jost Abrasive belt for a belt grinding machine
US20030003856A1 (en) * 2001-03-16 2003-01-02 Swei Gwo Shin Perforated sanding disc
US20040180618A1 (en) * 2001-09-03 2004-09-16 Kazuo Suzuki Sheet-form abrasive with dimples or perforations

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1532772A (en) * 1975-11-26 1978-11-22 Marton Miksa Vacuum sander
US4964245A (en) * 1987-12-15 1990-10-23 Gerd Braasch Grinding element for a grinding tool body
US5810650A (en) * 1995-12-29 1998-09-22 Joest; Peter Grinding member and an adapter for mounting the grinding member on a grinding machine or a grinding member holder
US20020016144A1 (en) * 2000-08-01 2002-02-07 Peter Jost Abrasive belt for a belt grinding machine
US20030003856A1 (en) * 2001-03-16 2003-01-02 Swei Gwo Shin Perforated sanding disc
US20040180618A1 (en) * 2001-09-03 2004-09-16 Kazuo Suzuki Sheet-form abrasive with dimples or perforations

Also Published As

Publication number Publication date
JP2006289592A (ja) 2006-10-26

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