Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3849949 A
Publication typeGrant
Publication dateNov 26, 1974
Filing dateOct 10, 1972
Priority dateOct 10, 1972
Also published asCA995182A1, DE2351100A1, DE2351100C2, DE2366317C2
Publication numberUS 3849949 A, US 3849949A, US-A-3849949, US3849949 A, US3849949A
InventorsBaratto E, Steinhauser A
Original AssigneeMinnesota Mining & Mfg
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Roll of pressure sensitive adhesive, adhesive coated abrasive discs and dispenser
US 3849949 A
Abstract
A convolutely wound roll of pressure-sensitive adhesive coated abrasive discs is wound on a core without a protective release liner. A dispenser suitable for individually dispensing the abrasive discs from the roll having a severing edge substantially narrower than the diameter of the discs to be dispensed and registering means for insuring that adjacent discs are separated at their line of tangency to form abrasive discs.
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

[ Nov. 26, 1974 United States Patent [1 1 Steinhauser et al.

[ ROLL OF PRESSURE SENSITIVE ADHESIVE, ADHESIVE COATED ABRASIVE Prim ry ExaminerOthell M. Simpson DISCS AND DISPENSER [75] Inventors: Armin H. Steinhauser, St. Paul;

Attorney, Agent, or Firm-Alexander, Sell, Steldt & DeLaHunt Eugene L. Baratto, White Bear Ramsey County, both of ABSTRACT A convolutely wound roll of pressure-sensitive adhe- Company, St. Paul, Minn.

Oct. 10, 1972 sive coated abrasive discs is wound on a core without [22] Filed:

a protective release liner. A dispenser suitable for individually dispensing the abrasive discs from the roll [21] Appl. No.: 295,842

' having a severing edge substantially narrower than the diameter of the discs to be dispensed and registering means for insuring that adjacent discs are separated at their line of tangency to form abrasive discs.

[52] US. 51/406, 225/38 [51] Int. B24d 11/00 [58] Field of Search.......................... 51/406; 225/38 3 Claims, 4 Drawing Figures References Cited UNITED STATES PATENTS 3,267,623 8/1966 Block.............,...v..................51/406 ROLL OF PRESSURE SENSITIVE ADHESIVE, ADHESIVE COATED ABRASIVE DISCS AND DISPENSER BACKGROUND OF THE INVENTION This invention relates to abrasive discs having a coating of pressure-sensitive adhesive on the back thereof and, in one aspect, to a dispenser for dispensing pressure-sensitive adhesive discs from a continuous roll of discs.

The prior art discloses a strip or ribbon comprising a first strip in the form of a chain of abrasive discs having a pressure-sensitive adhesive thereon and a second strip of flexible material covering the adhesive and being releasably adhesively bonded to the first strip. The resulting laminate is convolutely wound to form a roll which can be separated into individual laminated abrasive discs. Additionally, the prior art shows a dispensing device suitable for individually dispensing the abrasive discs and for retaining the release liner separated from said disc, see US. Pat. No. 3,267,623. Such a roll of discs and the dispensing means, while allowing the user to obtain a plurality of discs in a continuous roll, requires the additional expense of having aflexible covering to protect the adhesive coating and the additional trouble associated with separating the covering from the adhesive backing on the coated abrasive discs. Also, while such discs can be dispensed with the disclosed dispenser, the dispensing means does not have means for registering each disc with relationship to the cutting bar to insure that individual discs are severed from the roll.

BRIEF SUMMARY OF THE INVENTION It has been found that a roll of pressure-sensitive coated abrasive disc segments can be formed without the use of a flexible liner for protection of the disc or adhesive, and discs from such a roll can be indexed and dispensed individually without the trouble of having to sever and remove a layer of release liner. The abrasive roll of this invention comprises a concatenation of pressure-sensitive adhesive-coated abrasive discs connected with at least one other disc at a line of tangency, the concatenation of discs being convolutely wound to form a roll which can be easily unrolled. A dispensing device which has a severing edge substantially narrower than the greater width of the discs and having on each end of said severing edge a registering member will insure that individual discs are separated from the concatenation of discs at the line of tangency between adjoining discs.- The dispenser allows the easy and quick dispensing of the abrasive discs from the rollin the form of individual pressure-sensitive coated discs without the delay and mess caused by a protective liner.

BRIEF DESCRIPTION OF THE DRAWING A further understanding may be had by reference to the accompanying drawing in which:

FIG. 1 is a perspective view of a roll of abrasive disc segments mounted in the dispensing device of this invention;

FIG. 2 is an elevational view in partial section of the device of FIG. 1;

FIG. 3 is a vertical sectional view taken along the line 3-3 of FIG. 2; and

FIG. 4 is aplan view of a portion of a concatenate of abrasive discs forming a roll in accordance with this invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the accompanying drawing in which like reference numerals refer to like parts, a convolutely wound roll of abrasive discs 10 is rotatably mounted upon a supporting shaft 12 within a dispensing unit 13. A core 14 about which the roll of discs have been convolutely wound is retained on the shaft 12 by a wall 15 within the dispenser 13 and by friction retaining means in the form of a spring-loaded ball 16. The supporting shaft 12 is mounted within the case 18 and extends either direction from the wall 15, there being sufficient space in the case as shown to mount two rolls of convolutely wound abrasive discs thereby allowing more than one grade or type of abrasive disc to be available in the dispenser simultaneously. It is possible to form dispensing units having only one or more than two rolls of convolutely wound abrasive discs, the exact number of rolls in a dispenser depending on the number of grades and types of abrasive disc needed in each dispenser.

For ease of carrying a handle 20 is mounted on top of the three-sided frame of the dispensing device making movement from place-to-place within a working area very convenient. A standard 23 projects from the frame in spaced relationship to the shaft 12 to allow a roll of discs to be easily placed on the shaft. The standard 23 supports a knife, forming a cutting edge 24, at its free edge and has a projection 26 placed on each end of the cutting edge 24 which project above said edge to define disc registering means which index the individual discs in the roll. A smooth surfaced retention member 22 is mounted on the standard 23 between the cutting edge 24 and the roll of abrasive discs 10 to re tain the disc on the end of the roll in a position to be easily reached. The successive discs 25 will remain in contact with the retention member 22 because of the pressure-sensitive adhesive disposed on the abrasive disc opposite the surface having abrasive granules disposed thereon. When it is desired to separate a disc from the roll of discs, the disc desired to be separated is brought forward over the projecting registering means and then down toward the cutting edge 24. The projections 26 will prevent an abrasive disc from being separated from the adjoining disc until the width of the disc between the projections 26 is equal to or less than the width of the cutting edge 24 exposed by the projections. By properly regulating the registering means 26, it is possible to form a spacing which insures that adjoining discs are separated only at the line of tangency where the adjacent discs meet. The cutting edge 24 is shown held in place by screws 21 which allow the removal of a worn cutting blade and its replacement with a new blade. The cutting edge may be permanently or removeably mounted using a variety of fastening means, e.g., metal screws, nut and bolt, rivet, etc.

FIG. 2 shows a sectional view of the roll of pressuresensitive coated abrasive discs 10 mounted on the supporting shaft 12. The roll 10 is held in place by the retaining means. When all of the abrasive discs have been dispensed, it is a simple matter to force the core 14 over the ball 16 and slide the core 14 off of the shaft, and insert anew roll of adhesively coated abrasive discs on the shaft 12.

in FIG. 3 an abrasive disc 30 is shown resting on the smooth retaining member 22 which supports the disc 30 in a position to be easily grasped when it is desired to separate the disc from the roll 10. In FIG. 4 a plurality of discs 25 are shown which are joined along perforated lines substantially tangent to the discs. The lines are not longer than one-half the radius of the discs and maintain the discs 25 in a concatenatious configuration with the discs joined at the lines or necks 28. The length of the cutting edge 24 exposed by the registering means 26 will generally be about the same width as the width of the necks 28 between the discs 25 thereby insuring that successive discs will be severed at the neck. The registering means 26 will align the neck 28 in proper index with the cutting edge 24 and also retain the neck in the proper position as the disc being dispensed is separated from the roll. The registering means, by holding the neck at the proper place for separation, allows separation of the discs using only one hand, there being no need to manually hold the roll or the disc with the neck in position to be severed. This is in contrast to prior art devices where no means are provided for holding the neck in the proper position and the discs must be manually indexed thereby requiring the use of two hands.

The dispenser of this invention is useful for dispensing a variety of items which can be produced in roll form. The items to be dispensed can be of irregular shape, the rear portion of one item being joined to the front portion of the succeeding item, the individual items having a neck, which is substantially narrower than the width of the remainder of the item in order to provide an area for indexing the item to be severed with relationship to the severing edge.

The abrasive discs of this invention can be formed from a wide variety of well-known coated abrasive products such as cloth, or paper-backed coated abrasives. The coated abrasive products used will have a flexible backing material which allows the abrasive to be convolutely rolled into a roll of abrasive disc segments.

Pressure-sensitive adhesives useful for coating disc are known in the art. Examples of such adhesives being vinyl ethers, acrylates, and rubber resin disclosed in US. Pat. Nos. Re.24,906; 2,485,295; etc. The presently preferred adhesives, because of their extended shelf life and resistance to detackifying under atmospheric conditions, are arcylic copolymer adhesives disclosed in [1.5. Pat. No. Re.24906. One example of such an acrylic copolymer is a 95.5:4.5 isooctylacrylatezacrylic acid copolymer. Such a copolymer can be coated on the back of a concatenate of coated abrasive disc segments as a solution in heptanezisopropanol solvent and the heptanezisopropanol solvent evaporated leaving a pressure-sensitive adhesive having an extended life.

Various modifications and alterations of this invention may become obvious to those skilled in the art; it is to be understood, however, that the scope of this invention is not to be limited to the specific illustrative examples or materials described herein but includes those changes coming within the scope of the appended claims.

What is claimed is:

1. An abrasive disc product comprising a convolutely wound concatenation of coated abrasive discs having disposed on the side opposite the coated abrasive a pressure-sensitive adhesive, each of said discs being joined to at least one other disc along a perforated line substantially tangent to the discs and said line being less than half the radius of the discs and with the adhesive coating placed in releaseable contact with the abrasive coatingto maintain the wound roll and permit easy separation and application of the discs.

2. The coated abrasive product of claim 1 wherein said pressure-sensitive adhesive is an acrylate copolymer.

3 The coated abrasive product of claim 2 wherein said acrylate copolymer is isooctylacrylate-acrylic acid copolymer.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3267623 *Feb 8, 1963Aug 23, 1966Merit Products IncAbrasive article
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4202139 *Apr 6, 1978May 13, 1980Minnesota Mining And Manufacturing CompanyConformable hand sanding pad
US4294357 *Jan 10, 1980Oct 13, 1981Kennecott CorporationPop up abrasive disc dispenser
US4558542 *Dec 23, 1980Dec 17, 1985Miska MartonStick-on abrasive disc
US4875609 *Mar 4, 1988Oct 24, 1989Minnesota Mining And Manufacturing CompanyDisc dispenser
US4988554 *Jun 23, 1989Jan 29, 1991Minnesota Mining And Manufacturing CompanyAbrasive article coated with a lithium salt of a fatty acid
US5142829 *Jan 31, 1992Sep 1, 1992Minnesota Minning And Manufacturing CompanyAbrasive article
US5183479 *Nov 1, 1991Feb 2, 1993Gemtex Company LimitedAbrasive disks and method of making
US5197998 *Jun 15, 1992Mar 30, 1993Minnesota Mining And Manufacturing CompanyMethod of making a folded abrasive article
US5231803 *Apr 13, 1992Aug 3, 1993Minnesota Mining And Manufacturing CompanyAutomated random orbital abrading method
US5377455 *May 6, 1993Jan 3, 1995Minnesota Mining And Manufacturing CompanyAutomated random orbital abrading system and method
US5482496 *Dec 28, 1994Jan 9, 1996Minnesota Mining And Manufacturing CompanyAutomated random orbital abrading system and method
US5485918 *Jul 18, 1994Jan 23, 1996Minnesota Mining And Manufacturing CompanyPackaging assembly
US5486219 *Sep 6, 1994Jan 23, 1996Minnesota Mining And Manufacturing CompanyCoatable urea-aldehyde solutions containing a cocatalyst, coated abrasives made using said solutions, and method of making coated abrasives
US5505747 *Jan 13, 1994Apr 9, 1996Minnesota Mining And Manufacturing CompanyMethod of making an abrasive article
US5520957 *Jun 6, 1995May 28, 1996Minnesota Mining And Manufacturing CompanyMethod of preparing a coated abrasive article
US5551961 *Jun 7, 1995Sep 3, 1996Minnesota Mining And Manufacturing CompanyAbrasive articles and methods of making same
US5611825 *Sep 19, 1994Mar 18, 1997Minnesota Mining And Manufacturing CompanyAbrasive articles and methods of making same
US5643068 *May 26, 1995Jul 1, 1997Minnesota Mining And Manufacturing CompanyAbrading wheel having individual sheet members
US5667540 *Mar 13, 1996Sep 16, 1997Minnesota Mining And Manufacturing CompanyMethod of making an abrasive article
US5672186 *Mar 13, 1996Sep 30, 1997Minnesota Mining And Manufacturing CompanyMethod of making an abrasive article
US5725423 *Mar 3, 1997Mar 10, 1998Minnesota Mining And Manufacturing CompanyAbrading apparatus
US5785784 *Jul 23, 1997Jul 28, 1998Minnesota Mining And Manufacturing CompanyAbrasive articles method of making same and abrading apparatus
US5840089 *Jul 29, 1997Nov 24, 1998Minnesota Mining And Manufacturing CompanyMethod of making an abrasive article
US5888335 *Dec 18, 1996Mar 30, 1999Minnesota Mining And Manufacturing CompanyMultiple releasable contact responsive fasteners
US5908477 *Jun 24, 1997Jun 1, 1999Minnesota Mining & Manufacturing CompanyAbrasive articles including an antiloading composition
US5912059 *Aug 16, 1996Jun 15, 1999Minnesota Mining And Manufacturing CompanyOstomy pouch having non-tacky fastener system
US5958794 *Aug 8, 1996Sep 28, 1999Minnesota Mining And Manufacturing CompanyMethod of modifying an exposed surface of a semiconductor wafer
US6004670 *Jan 29, 1997Dec 21, 1999Minnesota Mining And Manufacturing CompanyMultiple releasable contact responsive fasteners
US6193337Jun 15, 1998Feb 27, 20013M Innovative Properties CompanyAbrasive sheet dispenser
US6194317Apr 30, 1998Feb 27, 20013M Innovative Properties CompanyMethod of planarizing the upper surface of a semiconductor wafer
US6261682Jun 30, 1998Jul 17, 20013M Innovative PropertiesAbrasive articles including an antiloading composition
US6287184Oct 1, 1999Sep 11, 20013M Innovative Properties CompanyMarked abrasive article
US6506277Dec 15, 2000Jan 14, 20033M Innovative Properties CompanyAbrasive sheet dispenser and method of use
US6579161Dec 6, 1996Jun 17, 20033M Innovative Properties CompanyAbrasive article
US6579162Dec 15, 2000Jun 17, 20033M Innovative Properties CompanyAbrasive article
US6884157Mar 25, 2003Apr 26, 20053M Innovative Properties CompanyAbrasive article
US6960125Nov 3, 2003Nov 1, 2005Jerry MickSanding block
US7044834Apr 20, 2005May 16, 20063M Innovative Properties CompanyAbrasive article
US7144313Dec 19, 2003Dec 5, 2006Greenwood Tim RAbrasive sheet alignment dispenser
US8062394Jun 28, 2006Nov 22, 2011Saint-Gobain Abrasives, Inc.High-performance resin for abrasive products
US8092707Aug 15, 2007Jan 10, 20123M Innovative Properties CompanyCompositions and methods for modifying a surface suited for semiconductor fabrication
US8802791Nov 21, 2011Aug 12, 2014Saint-Gobain Abrasives, Inc.High-performance resin for abrasive products
US9023955Jul 11, 2014May 5, 2015Saint-Gobain Abrasives, Inc.High-performance resin for abrasive products
US20050095968 *Nov 3, 2003May 5, 2005Jerry MickSanding block
US20050202770 *Apr 20, 2005Sep 15, 20053M Innovative PropertiesAbrasive article
US20140120811 *Oct 29, 2013May 1, 2014Robert Bosch GmbhMethod for producing at least one abrasive unit
DE4300057A1 *Jan 4, 1993Jul 7, 1994Gemtex Co LtdSchleifscheiben und Verfahren zu deren Herstellung
DE4300057B4 *Jan 4, 1993Jun 28, 2007Glit/Gemtex, Ltd., EtobicokeMit einem Schleifmittel beschichtetes Erzeugnis und Verfahren zu dessen Herstellung
EP2295496A1Jun 28, 2006Mar 16, 2011Saint-Gobain Abrasives, Inc.High performance resin for abrasive products
WO1996038264A1 *May 29, 1996Dec 5, 1996Minnesota Mining & MfgAbrasive sheet array and dispenser
Classifications
U.S. Classification451/538, 225/38
International ClassificationB65D83/08, B65H35/10, B24D11/00, B65H35/00
Cooperative ClassificationB65D83/0882, B24D11/008, B65H35/0026
European ClassificationB65H35/00B2B, B65D83/08D1D, B24D11/00C