WO1995011772A1 - Abrasive article having a colored substrate - Google Patents
Abrasive article having a colored substrate Download PDFInfo
- Publication number
- WO1995011772A1 WO1995011772A1 PCT/US1994/011627 US9411627W WO9511772A1 WO 1995011772 A1 WO1995011772 A1 WO 1995011772A1 US 9411627 W US9411627 W US 9411627W WO 9511772 A1 WO9511772 A1 WO 9511772A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- abrasive
- colorant
- substrate
- grade
- medium
- Prior art date
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
-
- 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
- B24D11/001—Manufacture of flexible abrasive materials
-
- 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
Definitions
- the present invention relates to abrasive articles in which abrasive grains are bonded to a substrate. More particularly, the present invention relates to abrasive articles having a colorant on the substrate visible through the abrasive medium.
- indicia in the form of printed information on the back side of the article opposite from the front side which comprises the abrasive grains or grit.
- the indicia typically includes a grade number, a product name or other identification.
- the grade number refers to the average particle size or the particle size distribution of the abrasive grain.
- Abrasive articles are typically converted into a wide variety of forms such as sheets, discs, or belts. It is well known to attach the discs or sheets to a backup pad or support pad during use by means of a pressure-sensitive adhesive or other suitable means.
- the indicia When the indicia is disposed on the back side of the abrasive article, the information cannot be seen if the abrasive article is opaque. If the abrasive article is translucent, only a mirror image of the indicia is seen and it is difficult to discern the indicia. Information which cannot be read by viewing the front of the abrasive article has several disadvantages. First, an operator may want to check the particular grade of an abrasive article if the operator forgets which grade of abrasive article is being used when the abrasive article is attached to a back-up pad or support pad.
- the second or new operator may not know the particular grade of the abrasive article. In both instances, the operator has to remove the abrasive article from the pad in order to check the grade, the product identification or the manufacturer. Then, if possible, the abrasive article is remounted on the back of the pad. If not, then a new abrasive article has to be attached to the pad.
- Another disadvantage relates to packaging of the abrasive article. Generally, in order to check the grade of the abrasive article, an abrasive article has to be removed from the package in order to view the indicia containing the grade designation.
- Patent 4,437,269 discloses an abrasive sheet having indicia carried on its rear face overlaid by a translucent textile material providing a surface engagable by hooks. The material being adhered to the indicia and information content remain discernible through the textile materials.
- U.S. Patent 5,137,542 discloses a coated abrasive article with a reduced tendency to accumulate static electric charge during the abrading of an electrically insulating workpiece, said coated abrasive article having a backing having a front surface and a back surface, an abrasive medium comprising one or more layers bonded to said front surface of the backing and a pattern of continuous coating of a cured electrically conductive ink which may be positioned on either side of the backing, between layers of the abrasive medium or on top of the abrasive medium.
- Examples of electrically conductive materials incorporated into the inks include graphite, _rbon black, metals and metal alloys. Accordingly, the inks are black. Contrasting indicia can be printed over a continuous coating of cured electrically conductive ink printed over the exposed surface of the backing.
- U.S. 4,328,274 discloses a friction sheet material which may be adherently bonded to the patterned surface of a substrate which permits the visual observation of such pattern when attached.
- the friction surface sheet material comprises a backing layer formed of a dimensionally stable polymeric film such as polyethylene terephthalate.
- a first and second coating of the first and second transparent binder material adherently bond a multitude of minute transparent glass particles uniformly dispersed over the upper major surface of the backing layer, with the tops of the glass particles projecting above the binder coating to provide a friction surface, and the bottom major surface of the backing layer as thereon a layer of transparent pressure-sensitive adhesive.
- PCT Application No. US93/01789 corresponding to U.S. Patent Application Nos. 07/868,007 and 08/077,315, discloses an abrasive sheet having a substrate with a front and back side. An abrasive material is adhered to the front side of the substrate. Indicia are disposed on the substrate and are viewable from the front side of the substrate in a normal non- mirror image readable from left to right. In one embodiment, the indicia are disposed on the back side of a substrate that is light transmissive. In another embodiment, the indicia are disposed on the front side of a substrate which may or may not be light transmissive. The indicia may be applied by conventional printing methods, e.g.
- abrasive sheet is also known comprising yellow paper having a black coating beneath an abrasive medium.
- color the coated abrasive by incorporating pigment or dye into one or more of the coating layers.
- the colored abrasive material can serve as product identification by utilizing different colors for different grades of abrasive or as a brand image with a particular color being associated with one manufacturer.
- Coloring the coating layers of abrasive materials has several disadvantages. It is necessary to ensure compatibility between the colorant and materials of the coating layers to ensure the performance of the abrasive material is not deleteriously affected. The addition of colorant increases the cost both in terms of raw materials and waste disposal costs. Furthermore, changing the color of adhesive or other coating on the coating equipment is time consuming since it is necessary to thoroughly clean the equipment to avoid color contamination.
- an abrasive material comprising a substrate having a front and back side with an abrasive medium provided on the front side of the substrate in which the abrasive medium is light transmissive and a colorant is present on the front side of the substrate beneath the abrasive medium whereby the colorant is visible through the abrasive medium.
- the present invention also provides a simple and effective method of imparting color to the abrasive side of an abrasive sheet.
- FIGURE 1 is a cross-sectional view of an abrasive article having a colored substrate according to the present invention.
- abrasive article 10 constructed in accordance with the present invention is illustrated in Figure 1.
- Colorant 16 is applied to the backing material or substrate 11 and thereafter overcoated with a translucent abrasive medium 17, including, for example, make coat 18, size coat 20, and abrasive particles 22.
- the colorant 16 may be applied in the form of a continuous coating, deposited image-wise, pattern-wise, or in the form of indicia. A plurality of different colors may be applied.
- abrasive materials having printed information or indicia which may be viewed through the abrasive medium or any other color image or pattern may be applied and viewed through the abrasive medium. It is readily possible to print product information, advertising or promotional material, graphics etc. which may be viewed through the abrasive material.
- the colorant 16 may be applied by known coating and printing techniques and may readily be incorporated into existing processing machinery for manufacturing the abrasives. For example, a printing station may be incorporated prior to the coating station for abrasive medium and can print or coat the desired colorant.
- the color and/or image may readily be altered at the printing station without necessitating change of the backing material 11 and/or conditions of the station for coating the abrasive medium 17.
- colorant used herein refers to any substance or material imparting a color other than black.
- the colorant 16 generally comprises a dye or pigment. In order to be visible the colorant must be selected to contrast with the color or shade of the opaque substrate 11. Thus, if the substrate 11 is itself colored, e.g. yellow, the applied colorant 16 is selected to provide a contrast, e.g. red.
- the substrate 11 is preferably opaque and may be selected from any of the materials which are known for use in the preparation of abrasive articles, including for example, paper, board, sponge, polymeric film, fiber, cloth, treated versions thereof, or combinations thereof. Preferred materials are paper, particularly A weight to F weight papers.
- the colorant 16 may be applied in the form of inks by any known printing techniques, e.g. letter ⁇ press, lithographic, gravure, and screen printing. However, any other ink printing technique may be employed including spraying, pens including felt tip marking pens, ink jet printing etc. Alternatively, colorant 16 may be applied by powder deposition e.g. powder coating or electrostatic coating or by hot melt deposition.
- print technologies for smaller volume applications may be employed, e.g., computer controlled laser jet or ink jet printing, color photocopying, photographic, free-hand, stencil and hand-stamping techniques.
- the colorant 16 may optionally be included in a coating composition to form a colored barrier layer, colored primer layer or a colored anti-static layer.
- the abrasive medium 17 is normally prepared by coating one surface 14 of a substrate 11 with a first binder layer 18 having adhesive properties, often referred to in the art as the "make”. Particles or abrasive material 22 are applied to the coated substrate and partially embedded therein. A layer of a second binder 20, often referred to as the "size”, is then applied to the material. The thickness of the second binder layer 20 regulates the amount of the abrasive material 22 extending abo * the binder medium. Anti-loading materials may be included in the size or in a further optional layer, referred to in the art as the supersize (not illustrated) .
- the binder or adhesive used in the make 18 or size 20 is light transmissive to enable the viewing of the colorant 16 through the abrasive medium 17 under normal room lighting conditions.
- typical adhesives include polyester resins, urethane resins, acrylate resins, phenolic resins, animal glue, urea- formaldehyde resins, melamine resin, epoxy resin and mixtures thereof. Such adhesives are applied at a thickness normally used for adhering abrasive materials 22 to a substrate 11.
- the abrasive grains 22 should also be light transmissive.
- typical abrasive grains 22 used for abrasive material include silicon carbide, silicon dioxide, aluminum oxide, white aluminum oxide, ceramic aluminum oxide, cerium oxide, diamond, cubic boron nitride, boron carbide and mixtures thereof.
- typical abrasive grains 22 are somewhat opaque, the particles 22 as a layer on the substrate 11 still have light transmissive properties such that the colorant 16 of the present invention clearly shows through the abrasive medium 17.
- the abrasive articles 10 of the invention may take a variety of forms, e.g. sheets, discs, belts etc.
- the back 12 of the substrate 11 may comprise means for releasably securing the article to a support pad, e.g. a pad of a sanding machine.
- Such means may comprise a pressure-sensitive adhesive or one part of a hook-and- loop fastening system.
- Nobo felt tip marking pens various colors.
- abrasive media 17 Phenol formaldehyde based abrasive media
- Samples were prepared by applying one or more of the above colorants 16 to the above opaque substrates 11 which were then overcoated with one of the abrasive media 17. In each case the color showed through the abrasive medium.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69423906T DE69423906T2 (en) | 1993-10-28 | 1994-10-28 | ABRASIVE WITH DYED CARRIER |
KR1019960702167A KR960705655A (en) | 1993-10-28 | 1994-10-28 | ABRASIVE ARTICLE HAVING A COLORED SUBSTRATE |
JP7512668A JPH09509102A (en) | 1993-10-28 | 1994-10-28 | Abrasive article having a colored substrate |
EP95902390A EP0725705B1 (en) | 1993-10-28 | 1994-10-28 | Abrasive article having a colored substrate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9322174.5 | 1993-10-28 | ||
GB939322174A GB9322174D0 (en) | 1993-10-28 | 1993-10-28 | Abrasive article |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995011772A1 true WO1995011772A1 (en) | 1995-05-04 |
Family
ID=10744213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1994/011627 WO1995011772A1 (en) | 1993-10-28 | 1994-10-28 | Abrasive article having a colored substrate |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0725705B1 (en) |
JP (1) | JPH09509102A (en) |
KR (1) | KR960705655A (en) |
CA (1) | CA2173353A1 (en) |
DE (1) | DE69423906T2 (en) |
GB (1) | GB9322174D0 (en) |
WO (1) | WO1995011772A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001024971A1 (en) * | 1999-10-01 | 2001-04-12 | 3M Innovative Properties Company | Marked abrasive article |
WO2001087543A2 (en) * | 2000-05-12 | 2001-11-22 | Kimberly-Clark Worldwide, Inc. | Colored loop substrate for releasably attachable abrasive sheet material |
US8821214B2 (en) | 2008-06-26 | 2014-09-02 | 3M Innovative Properties Company | Polishing pad with porous elements and method of making and using the same |
WO2016073227A1 (en) * | 2014-11-07 | 2016-05-12 | 3M Innovative Properties Company | Printed abrasive article |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110143539A1 (en) * | 2008-05-15 | 2011-06-16 | Rajeev Bajaj | Polishing pad with endpoint window and systems and methods using the same |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919678A (en) * | 1982-07-24 | 1984-02-01 | Nippon Rejibon Kk | Method of producing soft offset grinding wheel |
WO1988002299A1 (en) * | 1986-09-24 | 1988-04-07 | Foseco International Limited | Abrasive media |
JPH02157357A (en) * | 1988-12-09 | 1990-06-18 | Tajima Inc | Embossing floor material |
JPH02292166A (en) * | 1989-05-02 | 1990-12-03 | D T R:Kk | Diamond blade |
US5137542A (en) * | 1990-08-08 | 1992-08-11 | Minnesota Mining And Manufacturing Company | Abrasive printed with an electrically conductive ink |
JPH04323036A (en) * | 1991-04-23 | 1992-11-12 | Hashimoto Forming Ind Co Ltd | Manufacture of molded product composed of transparent material |
US5167095A (en) * | 1989-12-12 | 1992-12-01 | Robert Bosch Gmbh | Eccentric grinding machine |
WO1993020976A1 (en) * | 1992-04-13 | 1993-10-28 | Minnesota Mining And Manufacturing Company | Abrasive article |
JPH06182810A (en) * | 1992-12-15 | 1994-07-05 | Nissha Printing Co Ltd | Production of insert sheet for preform and insert molded product |
-
1993
- 1993-10-28 GB GB939322174A patent/GB9322174D0/en active Pending
-
1994
- 1994-10-28 CA CA002173353A patent/CA2173353A1/en not_active Abandoned
- 1994-10-28 WO PCT/US1994/011627 patent/WO1995011772A1/en active IP Right Grant
- 1994-10-28 DE DE69423906T patent/DE69423906T2/en not_active Expired - Fee Related
- 1994-10-28 JP JP7512668A patent/JPH09509102A/en active Pending
- 1994-10-28 KR KR1019960702167A patent/KR960705655A/en not_active Application Discontinuation
- 1994-10-28 EP EP95902390A patent/EP0725705B1/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919678A (en) * | 1982-07-24 | 1984-02-01 | Nippon Rejibon Kk | Method of producing soft offset grinding wheel |
WO1988002299A1 (en) * | 1986-09-24 | 1988-04-07 | Foseco International Limited | Abrasive media |
JPH02157357A (en) * | 1988-12-09 | 1990-06-18 | Tajima Inc | Embossing floor material |
JPH02292166A (en) * | 1989-05-02 | 1990-12-03 | D T R:Kk | Diamond blade |
US5167095A (en) * | 1989-12-12 | 1992-12-01 | Robert Bosch Gmbh | Eccentric grinding machine |
US5137542A (en) * | 1990-08-08 | 1992-08-11 | Minnesota Mining And Manufacturing Company | Abrasive printed with an electrically conductive ink |
JPH04323036A (en) * | 1991-04-23 | 1992-11-12 | Hashimoto Forming Ind Co Ltd | Manufacture of molded product composed of transparent material |
WO1993020976A1 (en) * | 1992-04-13 | 1993-10-28 | Minnesota Mining And Manufacturing Company | Abrasive article |
JPH06182810A (en) * | 1992-12-15 | 1994-07-05 | Nissha Printing Co Ltd | Production of insert sheet for preform and insert molded product |
Non-Patent Citations (5)
Title |
---|
DATABASE WPI Section Ch Week 9103, Derwent World Patents Index; Class LF, AN 91-019139 C03! * |
DATABASE WPI Section Ch Week 9252, Derwent World Patents Index; Class AC, AN 92-427840 C52! * |
DATABASE WPI Section Ch Week 9431, Derwent World Patents Index; Class AB, AN 94-252202 C31! * |
PATENT ABSTRACTS OF JAPAN vol. 14, no. 407 (M - 1019) 4 September 1990 (1990-09-04) * |
PATENT ABSTRACTS OF JAPAN vol. 8, no. 112 (M - 298) 25 May 1984 (1984-05-25) * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001024971A1 (en) * | 1999-10-01 | 2001-04-12 | 3M Innovative Properties Company | Marked abrasive article |
US6287184B1 (en) | 1999-10-01 | 2001-09-11 | 3M Innovative Properties Company | Marked abrasive article |
WO2001087543A2 (en) * | 2000-05-12 | 2001-11-22 | Kimberly-Clark Worldwide, Inc. | Colored loop substrate for releasably attachable abrasive sheet material |
WO2001087543A3 (en) * | 2000-05-12 | 2002-06-27 | Kimberly Clark Co | Colored loop substrate for releasably attachable abrasive sheet material |
US8821214B2 (en) | 2008-06-26 | 2014-09-02 | 3M Innovative Properties Company | Polishing pad with porous elements and method of making and using the same |
WO2016073227A1 (en) * | 2014-11-07 | 2016-05-12 | 3M Innovative Properties Company | Printed abrasive article |
US20170334041A1 (en) | 2014-11-07 | 2017-11-23 | 3M Innovative Properties Company | Printed abrasive article |
US10245705B2 (en) | 2014-11-07 | 2019-04-02 | 3M Innovative Properties Company | Printed abrasive article |
Also Published As
Publication number | Publication date |
---|---|
JPH09509102A (en) | 1997-09-16 |
CA2173353A1 (en) | 1995-05-04 |
EP0725705B1 (en) | 2000-04-05 |
KR960705655A (en) | 1996-11-08 |
EP0725705A1 (en) | 1996-08-14 |
DE69423906T2 (en) | 2000-12-07 |
DE69423906D1 (en) | 2000-05-11 |
GB9322174D0 (en) | 1993-12-15 |
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