EP0792204A1 - Elements d'application d'un produit et utilisation de ces elements - Google Patents

Elements d'application d'un produit et utilisation de ces elements

Info

Publication number
EP0792204A1
EP0792204A1 EP95940761A EP95940761A EP0792204A1 EP 0792204 A1 EP0792204 A1 EP 0792204A1 EP 95940761 A EP95940761 A EP 95940761A EP 95940761 A EP95940761 A EP 95940761A EP 0792204 A1 EP0792204 A1 EP 0792204A1
Authority
EP
European Patent Office
Prior art keywords
buffing
skirt
compounding element
compounding
pad
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Withdrawn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
EP95940761A
Other languages
German (de)
English (en)
Inventor
Stuart F. Brown
Stephen Forbes
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 Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0792204A1 publication Critical patent/EP0792204A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/14—Zonally-graded wheels; Composite wheels comprising different abrasives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B24D13/147—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions

Definitions

  • This invention relates to compounding elements or pads and in particular to compounding elements used to finish the exposed surface of paint, such as, on automobiles.
  • Finishing the exposed surface of new paint such as on an automobile typically includes (1) initial colour sanding which is done by hand using fine grit abrasive (e.g., 1200 to 1500 grit) that provides substantial smoothing or leveling of the paint surface but results in surface scratches from the abrasive grit; (2) one or more intermediate compounding operations in which a liquid or paste rubbing compound containing a finer abrasive is applied by a machine rotated compounding pad having tufts of all wool or a wool and synthetic fibre blend to remove the scratches that result from the colour sanding operation, which compounding operation leaves swirl marks on the paint; (3) a machine glazing operation in which a glaze including a yet finer abrasive is applied using a glazing or polishing pad to remove the swirl marks, which machine glazing operation leaves wheel marks that are particularly
  • initial colour sanding which is done by hand using fine grit abrasive (e.g., 1200 to 1500 grit) that provides substantial smoothing or leveling of
  • the hand glazing operation fills some of the wheel marks rather than removing them, so that after a short period of time or when the paint is subsequently washed, the fill in the wheel marks is removed and they can again be seen.
  • pads comprising a layer of open cell polymeric foam have been used in compounding and polishing operations.
  • Foam pads are disclosed in US 3418675 and foam pads having a working surface defined by a plurality of spaced projecting portions and recesses therebetween are disclosed in US 4962562.
  • One of the problems associated with many known compounding pads is that they have a tendency to sling the rubbing compound onto an area adjacent the working area.
  • the present invention provides a compounding element in which the propensity to sling rubbing compound is substantially reduced.
  • a compounding element for use with a rubbing compound in the finishing of a working surface.
  • the compounding element comprises a pad forming a buffing surface and a resiliently deformable skirt around the perimeter of the buffing surface and projecting beyond the buffing surface such that, in use, application of pressure to the compounding element on a working surface causes deformation of the skirt so that the buffing surface contacts the working surface.
  • the compounding element of the invention possesses a skirt which contacts the working surface during the compounding operation and retains the rubbing compound in the vicinity of the buffing surface by providing a barrier to any sling.
  • the skirt projects beyond the buffing surface and when the element is applied to a working surface the skirt contacts the working surface while the buffing surface remains spaced from the working surface.
  • Application of pressure to the compounding element causes the skirt to deform moving the buffing surface in contact with the working surface.
  • the compound elements of the invention may be used in any of the compounding and glazing operations, the materials of the pads that form the buffing surfaces and the rubbing compounds being selected for the appropriate task.
  • Suitable materials for forming the pads that define the buffing surface of the compound elements include natural fibres, synthetic fibres, combinations thereof and foams, such as those disclosed in US 3418675 and US 4962562.
  • a material for the pad defining the buffing surface that is useful for applying finishing compounds such as those sold under the commercial designation "Perfect-it" (t.m.) by Minnesota Mining and Manufacturing Company (3M), St.
  • a material for the pad defining the polishing surface that is useful for applying flatting agents e.g., the material sold under the trade designation "Prep and Blend” (t.m.) by 3M) or for use without such materials to scuff up basecoat/clearcoat paint adjacent a portion of an automobile being repaired to facilitate blending of paint applied to the repaired area with paint already on the automobile is the gray colored three dimensional lofty non- woven abrasive which includes silicone carbide abrasive, is generally described in US 2958539, and is sold by 3M under the trade designation Ultra Fine Hand Pad No. 7448 "Scotch-Brite" (t.m.) cleaning and finishing material.
  • flatting agents e.g., the material sold under the trade designation "Prep and Blend” (t.m.) by 3M
  • the gray colored three dimensional lofty non- woven abrasive which includes silicone carbide abrasive
  • the skirt may comprise any resiliently deformable material which does not abrade the working surface more than the buffing surface and rubbing compound.
  • a preferred skirt is made of foam, particularly a soft foam, preferably having open cells. The thickness of the skirt is selected such that it will retain the rubbing compound and will depend upon the resilience of the skirt material, the particular rubbing compound, the amount of rubbing compound used and the action to which the compound element is subjected in use e.g. rotation speed.
  • a suitable foam is an open cell polyester foam having a density in the range of 24 to 27 Kg/M 3 such as Type 4200A commercially available from Caligen Foam Ltd, Accrington, U.K. In general foam skirts having a width in the range 5 to 25 mm and projecting 5 to 10 mm beyond the buffing surface have proved to be acceptable, wider skirts being used for compounding element rotated at speeds above 2000 rpm.
  • the skirt may be made from a strip of foam by joining the ends to form a ring and securing the ring to back-up pad or perimeter of the buffing surface.
  • the ends and ring may be bonded with suitable adhesive or using transfer tape such as 3M No. 9485 Transfer Tape, commercially available from Minnesota Mining and Manufacturing Company (3M), St. Paul, Minnesota, USA
  • 3M No. 9485 Transfer Tape commercially available from Minnesota Mining and Manufacturing Company (3M), St. Paul, Minnesota, USA
  • 3M No. 9485 Transfer Tape commercially available from Minnesota Mining and Manufacturing Company (3M), St. Paul, Minnesota, USA
  • the rubbing compound is either applied to the buffing surface or the working surface and the compounding element is placed on the working surface such that the skirt envelopes the rubbing compound.
  • the compounding element is subjected to vibratory or rotatory rubbing motion and pressure applied to bring the buffing surface in contact with the working surface. When the desired degree of abrasion has occurred the compounding element may be removed.
  • the pressure on the compounding element may be reduced such that only the skirt contacts the working surface and the rubbing motion continued to buff the surface with the skirt.
  • a compounding element possesses two separate buffing surfaces.
  • the compounding element may, optionally, have one or more openings through the pad that defines the polishing surface to afford injecting a cold gas along the polishing surface to cool and thereby facilitate finishing of the surface being polished.
  • WO 94/26476 describes a suitable system that can be used to inject such cold gas.
  • Figure 1 shows a cross-section through a compounding element 2 in the form of a circular disc.
  • the compounding element 2 comprises a stiff circular back ⁇ up pad 4 adapted to be rotated by engagement of a drive mechanism (not shown) with a central boss 5 and having attached on its surface opposite the boss 5 a buffing pad 7 defining a buffing surface 6.
  • the buffing pad 7 comprises an open cell polymeric foam and has a plurality of spaced projecting portions 8 and recesses 10 defining the buffing surface 6 as is disclosed in US 4962562.
  • a generally cylindrical circumferential skirt 12 surrounds the buffing surface and is formed from a soft polymeric foam.
  • the radial width "w" of the skirt 12 is generally in the range 5 to 25 mm and the skirt 12 projects beyond the buffing surface 6 by a distance "h” which is generally in the range 5 to 10 mm.
  • Figure 1 shows the compounding element resting on a working surface 14.
  • Figure 2 shows a compounding element 22 according to the present invention that is formed by modification of a cylindrical soft foam buff to which is attached a back up pad 13 by which the compounding element 22 is driven.
  • a cylindrical central portion 16 of that soft foam flat buff was cut out to such a depth as to allow a convoluted hard foam buffing pad 17 having spaced projections 18 and recesses 20 that define a buffing surface 26 to sit just below the distal surface of a peripheral portion of the buff that forms a skirt 22.
  • the mode of operation is identical to that described with respect to Figure 1.
  • An advantage of this design is that the buffing pad 17 defining the buffing surface 26 can be removed and replaced with a different material e.g. wool/polyester blend mop or a softer (or harder) convoluted foam.
  • Figure 3 shows a compounding element 30 according to the present invention that has a foam skirt 32 surrounding a sliver knit wool/polyester blend mop or buffing pad 37 pad that defines a buffing or polishing surface 36, which skirt and buffing pad 37 are attached to a back up pad 33 by which the compounding element 30 is driven.
  • This design produces a higher degree of aggression compared to the use of foam.
  • Figure 4 shows a compounding element 40 according to the present invention that has a foam skirt 42 surrounding a buffing pad 47 defining the buffing surface 46, which skirt 42 and buffing pad 47 are attached to a back up pad 43 by which the compounding element 40 is driven..
  • the buffing pad 47 can be made of the three dimensional lofty non-woven abrasive which includes a talc abrasive and is sold by 3M under the trade designation "Scotch-Brite" (t.m.) cleaning and finishing material. With a buffing pad 47 of such material the compounding element 40 is useful for applying finishing compounds such as those sold under the commercial designation "Perfect-it” (t.m.) by Minnesota Mining and Manufacturing Company (3M), St. Paul, Minnesota, to finish the new mar resistant paints. Alternatively the buffing pad 47 defining the buffing surface 46 could be formed of the three dimensional lofty non-woven abrasive which includes silicone carbide abrasive and is sold by 3M under the trade designation Ultra Fine Hand Pad No.
  • the compounding element is useful for applying flatting agents (e.g., the material sold under the trade designation "Prep and Blend” (t.m.) by 3M) or for use without such materials to scuff up basecoat/clearcoat paint adjacent a portion of an automobile being repaired to facilitate blending of paint applied to the repaired area with paint already on the automobile.
  • flatting agents e.g., the material sold under the trade designation "Prep and Blend” (t.m.) by 3M
  • the compounding element 40 has a central opening 49 (e.g., a cylindrical opening 49 having a diameter in the range of about 1.9 to 25 mm or 22 mm) through the buffing pad 47 that defines the buffing surface 46 which is aligned with a central opening in the back up pad 43 to afford injecting a cold gas through the buffing pad 47 and along the buffing surface 46 to cool and thereby facilitate finishing of the surface being polished.
  • a central opening 49 e.g., a cylindrical opening 49 having a diameter in the range of about 1.9 to 25 mm or 22 mm
  • the buffing pad 47 defines the buffing surface 46 which is aligned with a central opening in the back up pad 43 to afford injecting a cold gas through the buffing pad 47 and along the buffing surface 46 to cool and thereby facilitate finishing of the surface being polished.
  • the compounding elements 2, 22, 30 and 40 have been illustrated in the form of discs e.g. 5-1/4 inch discs which are a standard size used in the art, alternatively the compounding elements could
  • compounding elements may be constructed to allow detachable fastening of the skirt and/or buffing surface to the back-up pad e.g. employing hook and loop fastening devices, mechanical fastening devices, pressure sensitive adhesives etc.
  • any of the compounding elements could include a buffing pad with either a planar polishing surface as illustrated in Figures 3 and 4 for the compounding elements 30 and 40, or a polishing surface defined by projections and recesses as illustrated in Figures 1 and 2 for the compounding elements 2 and 22.
  • any of the compounding elements 2, 12 or 30 could have a through opening for the injection of cold gas such as the opening 49 in the compounding element 40.

Landscapes

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

Abstract

La présente invention concerne un élément d'application d'un produit destiné à être utilisé, avec une pâte à polir, pendant l'opération de finissage d'une surface de travail. Cet élément d'application possède une surface de polissage et une jupe élastiquement déformable qui est disposée le long du périmètre de la surface de polissage et qui dépasse de celle-ci. En cours d'utilisation, l'application d'une pression à l'élément d'application placé sur la surface de travail provoque la déformation de la jupe de sorte que la surface de polissage entre en contact avec ladite surface de travail; la jupe limite les projections de la pâte à polir.
EP95940761A 1994-11-18 1995-11-16 Elements d'application d'un produit et utilisation de ces elements Withdrawn EP0792204A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9423267A GB9423267D0 (en) 1994-11-18 1994-11-18 Compounding elements and use thereof
GB9423267 1994-11-18
PCT/US1995/015090 WO1996015878A1 (fr) 1994-11-18 1995-11-16 Elements d'application d'un produit et utilisation de ces elements

Publications (1)

Publication Number Publication Date
EP0792204A1 true EP0792204A1 (fr) 1997-09-03

Family

ID=10764582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95940761A Withdrawn EP0792204A1 (fr) 1994-11-18 1995-11-16 Elements d'application d'un produit et utilisation de ces elements

Country Status (4)

Country Link
EP (1) EP0792204A1 (fr)
AU (2) AU4018395A (fr)
GB (1) GB9423267D0 (fr)
WO (2) WO1996015877A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5716259A (en) * 1995-11-01 1998-02-10 Miller; Paul David Surface polishing method and system
US6241579B1 (en) 1997-01-10 2001-06-05 Auto Wax Company, Inc. Surface polishing applicator system and method
JP4782214B2 (ja) 2009-04-01 2011-09-28 ジョイボンド株式会社 研磨用および表面保護材塗布用可塑性柔軟組成物
EP2394767A1 (fr) 2010-06-10 2011-12-14 Siemens Aktiengesellschaft Adaptateur à refroidissement à utiliser sur les machines-outils de broche creuse

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2028874A (en) * 1934-03-16 1936-01-28 Park Chem Co Sanding device
US3924362A (en) * 1974-10-25 1975-12-09 Formax Manufacturing Corp Sanding pad assembly
JPS58149176A (ja) * 1982-03-01 1983-09-05 Toshiba Corp 砥粒加工工具
US4617767A (en) * 1985-01-14 1986-10-21 Ali Frank F Sanding, buffing and polishing tool and parts thereof
CA1321073C (fr) * 1987-04-14 1993-08-10 Thomas R. Mcavoy Article abrasif contenant des fibres frisees en spirales
US4962562A (en) * 1989-01-18 1990-10-16 Minnesota Mining And Manufacturing Company Compounding, glazing or polishing pad
ES2059858T3 (es) * 1989-04-01 1994-11-16 Messer Griesheim Gmbh Dispositivo de pulido o esmerilado.
EP0619165A1 (fr) * 1993-04-07 1994-10-12 Minnesota Mining And Manufacturing Company Article abrasif

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9615878A1 *

Also Published As

Publication number Publication date
AU4018395A (en) 1996-06-17
AU4240596A (en) 1996-06-17
WO1996015877A1 (fr) 1996-05-30
GB9423267D0 (en) 1995-01-11
WO1996015878A1 (fr) 1996-05-30

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