WO2018122742A1 - Article abrasif et procédé d'utilisation - Google Patents

Article abrasif et procédé d'utilisation Download PDF

Info

Publication number
WO2018122742A1
WO2018122742A1 PCT/IB2017/058433 IB2017058433W WO2018122742A1 WO 2018122742 A1 WO2018122742 A1 WO 2018122742A1 IB 2017058433 W IB2017058433 W IB 2017058433W WO 2018122742 A1 WO2018122742 A1 WO 2018122742A1
Authority
WO
WIPO (PCT)
Prior art keywords
article
abrasive
backing
tie coat
coat
Prior art date
Application number
PCT/IB2017/058433
Other languages
English (en)
Inventor
Christopher J. Carter
Martin YALE
Original Assignee
3M Innovative Properties Company
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 Company filed Critical 3M Innovative Properties Company
Priority to CN201780081619.1A priority Critical patent/CN110139729A/zh
Priority to EP17832573.4A priority patent/EP3562623A1/fr
Priority to US16/474,513 priority patent/US20200023493A1/en
Publication of WO2018122742A1 publication Critical patent/WO2018122742A1/fr

Links

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
    • B24D3/001—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 supporting member
    • B24D3/002—Flexible supporting members, e.g. paper, woven, plastic materials
    • B24D3/004—Flexible supporting members, e.g. paper, woven, plastic materials with special coatings
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D2203/00—Tool surfaces formed with a pattern
    • 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
    • B24D3/02—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
    • B24D3/20—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 and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds
    • 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
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/346—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties utilised during polishing, or grinding operation

Definitions

  • the present invention relates to abrasive articles and methods of using the same for polishing. More particularly, it relates to an abrasive article having a water-softenable tie coat.
  • the preparation of automotive paint surfaces following repair after accident or other damage typically involves a multistage process. This process is initiated by de- nibbing the paint applied to the surface during the repair with a relatively coarse PI 500 abrasive disc. The de-nibbed surface is then refined using a series of increasingly fine grade abrasive discs (typically P3000 and P6000 or JIS2500 and JIS6000), followed by a cutting compound and finally a polish.
  • abrasive discs typically P3000 and P6000 or JIS2500 and JIS6000
  • a coated abrasive article having
  • tie coat is liquid-softenable such that the tie coat maintains the flexible backing in a substantially rigid state when the tie coat is dry and allows the backing to flex when the tie coat is in its softened state.
  • This aspect of the invention delivers advantages as follows.
  • the article When the tie coat is in its dry state, the article is able to deliver a high cut rate due to the tie coat maintaining the rigidity of the backing.
  • the aggressiveness of the cut achieved is reduced due the increased conformity of the backing.
  • the increased conformability allows article more readily to conform to the surface of the paint finish.
  • a further advantage is that the only action required by the user to initiate the change in state is to add liquid, for example water. No change of abrasive article or other tooling is required to alter the cut performance of the abrasive article. This reduces the need for the user to implement multiple abrasive changes to remove dust nibs and restore paint to its original finish.
  • the invention allows the use of a random orbital sander to achieve both cut and finish since the cut achieved when using a conventional abrasive article with a flexible backing on a rotary polisher can be achieved with the abrasive article in its dry state in use on a random orbital sander. This reduces the requirement to use not only multiple abrasive discs but also the requirement to use multiple powered devices in order to restore paint to its original finish.
  • the tie coat is a hydrogel.
  • the tie coat contains an acrylol morpholine oxide UV-curable monomer.
  • the backing is a non-woven web or foam.
  • the backing is a thermoplastic web.
  • the abrasive coat comprises a cured abrasive slurry containing a plurality of abrasives particles,
  • abrasive slurry is soluble such that it retains the abrasive particles on the backing when in its solid state, and releases the abrasive particles from the backing during the process of dissolution to a dissolved state.
  • This aspect of the invention delivers advantages as follows.
  • the article When the abrasive slurry is in its dry state, the article is able to deliver a high cut rate due to the surface texture of the cured abrasive slurry abrading the paint surface.
  • the surface texture of the slurry breaks down allowing the slurry to deliver a high finish to the paint surface.
  • This is advantageous since the only action required by the user to initiate the change in state is to add liquid, for example water. No change of abrasive article or other tooling is required. This eliminates the need for the user to implement multiple abrasive changes to remove dust nibs and restore paint to its original finish.
  • the abrasive slurry is a UV light cured abrasive slurry.
  • this feature of the abrasive article allows surface features to be cured in the surface of the abrasive article which assist in delivering high cut when the abrasive article is in its dry state.
  • the abrasive slurry dissolves into a polishing compound upon dissolution by a liquid.
  • the liquid is a surfactant or emulsion or, more preferably, water.
  • the cured undissolved slurry has a surface texture comprising geometric forms.
  • the cured undissolved slurry has a surface texture comprising polygons.
  • the abrasive particles are formed of vermiculite, alumina or silicon carbide, preferably alumina.
  • a method of abrading a work piece including the steps of:
  • tie coat is liquid-softenable such that the tie coat maintains the flexible backing in a substantially rigid state when the tie coat is dry and allows the backing to flex when the tie coat is in its softened state
  • the method includes the step of:
  • Figure 1 shows an abrasive article in the form of an abrasive disc 10.
  • the disc 10 is suitable for mounting on a rotary polisher or random orbital sander although it is conceivable within the scope of the invention that the abrasive article could be used for other forms of abrasive work.
  • the disc 10 has a backing 12 with first and second opposed major surfaces 14, 16.
  • the first major surface 14 carries a tie coat 18.
  • An abrasive coat 20 is positioned on the tie coat 18.
  • the backing 12 is formed of a non- woven thermoplastic web comprising an open, lofty, three-dimensional structure of fibers bonded to one another at their mutual contact points. Such non- woven backings are well known in the art.
  • the backing 12 is a foam backing and other forms of backing are conceivable within the scope of the invention.
  • the backing material whether non-woven or foam, is flexible so as to offer a degree of compliance to the abrasive disc 10 when wet as will be described in further detail below.
  • the tie coat 18 serves two principal purposes. Firstly, it improves the adhesion of the abrasive coat 20 to the backing and secondly it provides a degree of control over the rigidity of the backing 12. As described above, the backing 12 is inherently flexible.
  • the process of UV-curing the tie coat 18 on the backing hardens the tie coat 18 which then maintains the backing 12 in a rigid state despite its inherent flexibility. This rigidity is maintained until such time as the tie coat 18 comes into contact with water (or other liquid such as an emulsion or surfactant) at which point the tie coat 18 softens.
  • the tie coat 18 contains an acrylol morpholine oxide UV-curable monomer which has a high glass transition temperature, is very hard when dry but is water-soluble in its cured linear polymer form. This solubility allows the tie coat 18 (and thereby the backing 12 to which the tie coat 18 is adhered) to transition from rigid when dry to flexible when wet.
  • the abrasive coat 20 is formed of a UV-curable abrasive slurry which contains a plurality of abrasive particles.
  • the abrasive particles in this embodiment are Alumina 5 ⁇ or Alumina 14 ⁇ although other suitable minerals fall within the scope of the invention.
  • the slurry is cast into a micro-replicated tooling to form a structured abrasive once cured. This process generates a geometric surface texture on the abrasive article in the form of polygons 22.
  • the abrasive coat 20 (by way of the polygons 22) delivers aggressive cut as the tips of the polygons abrade the workpiece.
  • the abrasive slurry like the tie coat 18 described above, contains acrylol morpholine oxide (also referred to as ACMO) which enables the abrasive slurry to dissolve upon contact with water.
  • ACMO acrylol morpholine oxide
  • the addition of water to the abrasive disc 10 causes the aggressive polygons to soften and break up. This reduces the cut of the abrasive article and increases the finish.
  • the small abrasive particles Al in the range of 5 to 14 um
  • the small abrasive particles are freed resulting in the abrasive slurry dissolving into a polishing compound which delivers a high finish to the workpiece.
  • Curing was achieved in a two stage process with the tie coat being cured before application and curing of the abrasive slurry.

Abstract

Article abrasif revêtu (10) comportant un support flexible (12) et un revêtement abrasif (20) fixé au support (12) par un revêtement d'accrochage (18), le revêtement d'accrochage (18) pouvant ramollir dans un liquide de telle sorte que le revêtement d'accrochage (18) maintient le support flexible (12) dans un état sensiblement rigide lorsque le revêtement d'accrochage (18) est sec et permet au support (12) de fléchir lorsque le revêtement d'accrochage (18) est dans son état ramolli.
PCT/IB2017/058433 2016-12-30 2017-12-27 Article abrasif et procédé d'utilisation WO2018122742A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201780081619.1A CN110139729A (zh) 2016-12-30 2017-12-27 磨料制品及其使用方法
EP17832573.4A EP3562623A1 (fr) 2016-12-30 2017-12-27 Article abrasif et procédé d'utilisation
US16/474,513 US20200023493A1 (en) 2016-12-30 2017-12-27 Abrasive article and method of use

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1622439.6A GB201622439D0 (en) 2016-12-30 2016-12-30 Abrasive article and method of use
GB1622439.6 2016-12-30

Publications (1)

Publication Number Publication Date
WO2018122742A1 true WO2018122742A1 (fr) 2018-07-05

Family

ID=58412326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2017/058433 WO2018122742A1 (fr) 2016-12-30 2017-12-27 Article abrasif et procédé d'utilisation

Country Status (5)

Country Link
US (1) US20200023493A1 (fr)
EP (1) EP3562623A1 (fr)
CN (1) CN110139729A (fr)
GB (1) GB201622439D0 (fr)
WO (1) WO2018122742A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211591A2 (fr) * 1985-08-07 1987-02-25 Minnesota Mining And Manufacturing Company Agglomérats érodables et abrasifs les contenantainsi que la méthode de préparation
WO2009011973A1 (fr) * 2007-07-13 2009-01-22 3M Innovative Properties Company Abrasif structuré ayant une couche de recouvrement et procédé de fabrication et d'utilisation de celui-ci
WO2009088606A2 (fr) * 2007-12-31 2009-07-16 3M Innovative Properties Company Article abrasif traité par plasma et son procédé de fabrication
WO2010011801A2 (fr) * 2008-07-24 2010-01-28 3M Innovative Properties Company Produit en matériau abrasif, son procédé de production et son procédé d'utilisation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3151925A1 (de) * 1981-12-30 1983-07-07 Bayer Ag, 5090 Leverkusen Elastische schleifmaterialien auf basis von polyurethanharnstoffgelen und ein verfahren zu ihrer herstellung
US5700302A (en) * 1996-03-15 1997-12-23 Minnesota Mining And Manufacturing Company Radiation curable abrasive article with tie coat and method
US20090061744A1 (en) * 2007-08-28 2009-03-05 Rajeev Bajaj Polishing pad and method of use
US7232364B2 (en) * 2005-02-04 2007-06-19 3M Innovative Properties Company Abrasive cleaning article and method of making
CN101704224B (zh) * 2009-11-06 2011-05-04 南京航空航天大学 带有过渡层和粘接层的固结磨料研磨抛光垫
EP2662429B1 (fr) * 2011-01-06 2015-06-10 Sekisui Plastics Co., Ltd. Composition pour un hydrogel adhésif et son utilisation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211591A2 (fr) * 1985-08-07 1987-02-25 Minnesota Mining And Manufacturing Company Agglomérats érodables et abrasifs les contenantainsi que la méthode de préparation
WO2009011973A1 (fr) * 2007-07-13 2009-01-22 3M Innovative Properties Company Abrasif structuré ayant une couche de recouvrement et procédé de fabrication et d'utilisation de celui-ci
WO2009088606A2 (fr) * 2007-12-31 2009-07-16 3M Innovative Properties Company Article abrasif traité par plasma et son procédé de fabrication
WO2010011801A2 (fr) * 2008-07-24 2010-01-28 3M Innovative Properties Company Produit en matériau abrasif, son procédé de production et son procédé d'utilisation

Also Published As

Publication number Publication date
EP3562623A1 (fr) 2019-11-06
US20200023493A1 (en) 2020-01-23
CN110139729A (zh) 2019-08-16
GB201622439D0 (en) 2017-02-15

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