EP0010408A1 - Procédé pour la fabrication de matière plastique spongieuse abrasive - Google Patents

Procédé pour la fabrication de matière plastique spongieuse abrasive Download PDF

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Publication number
EP0010408A1
EP0010408A1 EP19790302194 EP79302194A EP0010408A1 EP 0010408 A1 EP0010408 A1 EP 0010408A1 EP 19790302194 EP19790302194 EP 19790302194 EP 79302194 A EP79302194 A EP 79302194A EP 0010408 A1 EP0010408 A1 EP 0010408A1
Authority
EP
European Patent Office
Prior art keywords
sheet
foam
resin
stencil
holes
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.)
Granted
Application number
EP19790302194
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German (de)
English (en)
Other versions
EP0010408B1 (fr
Inventor
Robert Michael Barron
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0010408A1 publication Critical patent/EP0010408A1/fr
Application granted granted Critical
Publication of EP0010408B1 publication Critical patent/EP0010408B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/04—Hand tools or other devices for non-rotary grinding, polishing, or stropping resilient; with resiliently-mounted operative surface

Definitions

  • the invention relates to a foam polymeric material with an abrasive surface, which can be used, for example, to make scouring and cleaning pads for domestic use, and to a method for producing the material.
  • a method for providing an abrasive surface on a sheet of a compressible foam polymeric material comprising the steps of arranging a stencil having a multiplicity of holes against a surface of a sheet of a compressible foam polymeric material, applying pressure to the stencil to impress it into the sheet of foam material, applying a hardenable resin to the surface of the stencil remote from the sheet of foam. material, the resin contacting the foam material in the region of the holes in the stencil, removing the stencil and allowing or causing the resin in contact with the foam to harden.
  • a sheet of compressible foam polymeric material provided with an abrasive surface, the abrasive surface comprising a multiplicity of distinct regions of hardened resin which is, at least in part, incorporated in the sheet.
  • the resin is preferably incorporated into the sheet of compressible foam material in the region of the holes in the stencil and does not project from the surface of the sheet.
  • the foam material is preferably of the "open-cell” type, i.e. a foam material in which neighbouring cells communicate with each other, and the resin, which can contain an abrasive substance, is preferably applied in such a way as not to fill the cells of the foam material.
  • the resin coating thus hardens the cell structure in the regions in which it is incorporated but should not create a continuous hard surface which closes the cells at the surface. It is however likely to reduce communication between the cells of an open foam structure in the region in which it is incorporated. Since the body of the foam sheet remains unaltered it will absorb the cleaning fluid and supply is to the hardened abrasive regions.
  • the sheet of foam material is provided with a pattern of regions of hardened resin which do not adversely affect the flexibility of the foam sheet.
  • the resin being impregnated in the foam material, is unlikely to become separated from the sheet of foam material. Since the resin is applied in a multiplicity of distinct regions it is less likely to crack than if applied as a continuous superficial coating.
  • a sheet of compressible foam plastics material 10 which is of the "open-cell" type in which neighbouring cells communicate with each other.
  • the foam sheet is preferably of polyurethane although there are many alternative materials, for example various rubbers, plasticised P.V.C., modified cellulose.
  • a typical polyurethane foam material has the following characteristics:- The thickness of the sheet is preferably in the range from 2 mm to 50 mm.
  • a stencil 11 having a multiplicity of holes 12 in a regular pattern is arranged against a surface of the sheet and pressure is applied to the stencil to impress it into the sheet as shown in Fig. 1.
  • the stencil 11 is made of a rigid material, for example a metal or a rigid plastics material, and its thickness is typically in the range 0.5 to 2.0 mm though this dimension is not critical.
  • the holes 12 can be of any shape but for convenience will usually be circular and have diameters approximately in the range 2 to 10 mm., or perhaps up to 15 mm. A typical example has circular holes of 8 mm diameter at 12 mm spacing between centres.
  • the holes have an area approximately in the range 3 to 150 but preferably less than 80 square mm. It will be appreciated that the area of one hole in the stencil is small compared to the area of, for example, a scouring pad for domestic use, which is one of the articles which can be produced directly from the finished sheet of abrasive foam material.
  • the total area of the holes 12 is preferably between 25 and 60% of the total area of the stencil. However if the shape of the holes approximates to a square or rectangle it is possible to increase the total area of the holes to as much as 90% of the total area of the stencil.
  • a hardenable liquid resin is applied to the stencil 11 and spread over the stencil by means of a rigid spreader member, for example a metal or hard rubber blade.
  • the resin preferably comprises an epoxy resin and an example of the constituents of a suitable resin is as follows:-
  • DER 321 is a product of the Dow Chemical Company available through Casa Chemicals Ltd.
  • "Synolide 960” is a product of General Mills Corpn. available from Cray Valley Products Ltd. 200 mesh is a sieve size which passes particles of up to 75 pm diameter.
  • resins may be used depending on the intended use of the finished abrasive foam sheet and examples of alternative resins are natural and synthetic rubbers, acrylics, P.V.C., and phenol-formaldehyde resins. Similarly the amount and type of abrasive filler used can be varied and resins containing no abrasive filler can be used.
  • the spreader member As the spreader member is drawn across the stencil 11 it comes into contact with the foam material where it protrudes through the holes 12, and smears resin into the material.
  • the stencil 11 is then removed from the sheet of foam material lO which is then exposed to conditions suitable for hardening the resin associated with the sheet.
  • the sheet To harden the example of a resin described above, the sheet should be heated to 1 25 °C for about 5 minutes.
  • Fig. 2 shows the material produced by this method.
  • the sheet of foam material 10 is provided with an abrasive surface 13 comprising a multiplicity of distinct regions of hardened resin 14 corresponding to the holes 12 in the stencil 11.
  • the resin is incorporated into the sheet of material lO and does not substantially project above the surface of the sheet. This is due to the compression of the material by the stencil and the working of the resin into protruding areas of foam material as they are engaged by the spreader member.
  • the foam material expands and, since the material is of the "open-cell” type, the liquid resin is drawn into the sheet from cell to cell with the result that, in general, the cells which contain resin are not filled by the resin but have the cell walls coated. The cell structure is thus retained, which is important for the cleaning action of the product.
  • the cell diameters are preferably in the range 0.25 to 2.00 mm.
  • the resin is incorporated in the cells of the foam material and in use of a part of the sheet, for example as a scouring pad, the resin is much less likely to get separated from the foam material than if it is applied as a superficial coating.
  • a continuous superficial coating of resin is also prone to splitting, which does not occur if resin is applied in a pattern of distinct small regions.
  • the surface structure of the cells of the foam sheet, within the regions of hardened resin 14, contributes an abrasive effect, as does the discontinuity of the resin-impregnated regions and the presence of any abrasive material in the resin.
  • Products made using very thin section polyurethane foams are too weak and dimensionally unstable to be durable.
  • foams can, however, be easily modified and strengthened by lamination to a lightweight fabric (e.g. cotton or synthetic), either woven or non-woven. These fabrics would have weights of 20 - 100 g/m 2 .
  • a further improvement in strength occurs during the coating/printing process, as the liquid resin will completely penetrate the thin foam and adhere to the fabric laminated to the back of the foam.
  • the resulting product can either be used as an abrasive or cleaning cloth, or further laminated to blocks of polyurethane or other rigid foams and cut up into pads.
  • Typical films are: poly(ethylene), poly(ethylene vinyl acetate), plasticised poly(vinyl chloride) and its copolymers, natural rubber - hydrochloride, etc.
  • FTlm thicknesses are typically 25 - 50 microns.
  • the film is fused to the foam surface at 120 - 160°C for 5 - 20 seconds at around 2 kg/cm 2 depending upon the particular film used and thickness of the coated foam.
  • cleaning or scouring pads can be made from a sheet of abrasive foam material according to the invention simply by cutting the sheet into pads of a size suitable for the intended use. Sheets having differing abrasive characteristics may be produced as described above. Cleaning or scouring pads cut from a sheet of abrasive foam may be used to clean, for example, cooking utensils, baths, kitchen sinks, paintwork, and vehicle windscreens. For these purposes they must be used with a liquid, for example water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
EP19790302194 1978-10-13 1979-10-12 Procédé pour la fabrication de matière plastique spongieuse abrasive Expired EP0010408B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7840452 1978-10-13
GB4045278 1978-10-13

Publications (2)

Publication Number Publication Date
EP0010408A1 true EP0010408A1 (fr) 1980-04-30
EP0010408B1 EP0010408B1 (fr) 1983-02-16

Family

ID=10500311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790302194 Expired EP0010408B1 (fr) 1978-10-13 1979-10-12 Procédé pour la fabrication de matière plastique spongieuse abrasive

Country Status (3)

Country Link
EP (1) EP0010408B1 (fr)
JP (1) JPS5553537A (fr)
DE (1) DE2964833D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT381057B (de) * 1981-02-21 1986-08-25 Joest Peter Schleifmittel-gebrauchsgegenstand
WO1998010897A1 (fr) * 1996-09-10 1998-03-19 Norton Company Meule
WO2018067953A1 (fr) 2016-10-06 2018-04-12 The Procter & Gamble Company Procédé de fabrication d'une éponge de nettoyage abrasive
EP3495369A1 (fr) 2007-06-13 2019-06-12 Incyte Holdings Corporation Utilisation des sels de l'inhibiteur de janus kinase (r)-3-(4-(7h-pyrrolo [2,3-d]pyrimidin-4-yl)-1h-pyrazol-1-yl)-3-cyclopentylpropanenitrile
US11446911B2 (en) 2016-02-26 2022-09-20 3M Innovative Properties Company Consumer scrubbing article with solvent-free texture layer and method of making same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2596678B1 (fr) * 1986-04-08 1992-04-17 Siderurgie Fse Inst Rech Procede et dispositif pour la rectification ou le polissage de cylindres de laminoirs
JP2000509663A (ja) * 1996-05-03 2000-08-02 ミネソタ・マイニング・アンド・マニュファクチャリング・カンパニー 不織研磨製品
DE69618022T2 (de) * 1996-05-03 2002-07-18 Minnesota Mining And Manufacturing Company, St. Paul Verfahren zur Herstellung von Schleifmitteln
JP4150078B2 (ja) * 1996-05-03 2008-09-17 スリーエム カンパニー 多孔質研磨用製品の製造方法
US5849051A (en) * 1997-11-12 1998-12-15 Minnesota Mining And Manufacturing Company Abrasive foam article and method of making same

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1446998A (en) * 1921-12-05 1923-02-27 John A Vincent Metal cleaning and polishing device
US1495839A (en) * 1923-04-12 1924-05-27 Earl R Gribben Cleaning material
US1896638A (en) * 1926-08-30 1933-02-07 Asbestos Wood & Shingle Co Apparatus for coating sheet material with granular material
US2596565A (en) * 1946-09-23 1952-05-13 William E Kautenberg Reinforced sponge and method of reinforcing it
US2804728A (en) * 1954-11-18 1957-09-03 Politzer Alfred Abrasive article
US3256075A (en) * 1961-10-20 1966-06-14 Minnesota Mining & Mfg Abrasive sponge
FR1465778A (fr) * 1964-12-24 1967-01-13 Collo Rheincollodium Koln G M Procédé pour la fabrication d'une pièce de nettoyage et notamment une plaque nettoyante pour pot, ainsi que les pièces de nettoyage conformes à celles obtenues par le présent procédé ou procédé similaire
US3619843A (en) * 1969-05-26 1971-11-16 American Cyanamid Co Sponges with dry impregnants
US3630800A (en) * 1966-07-01 1971-12-28 Johnson & Johnson Method of manufacturing an improved wiping cloth
FR2299943A1 (fr) * 1975-02-05 1976-09-03 Schnuriger Karl Dispositif abrasif
FR2315897A1 (fr) * 1975-07-04 1977-01-28 Collo Gmbh Lavette pour les usages menagers, l'entretien des automobiles ou autres usages analogues

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1446998A (en) * 1921-12-05 1923-02-27 John A Vincent Metal cleaning and polishing device
US1495839A (en) * 1923-04-12 1924-05-27 Earl R Gribben Cleaning material
US1896638A (en) * 1926-08-30 1933-02-07 Asbestos Wood & Shingle Co Apparatus for coating sheet material with granular material
US2596565A (en) * 1946-09-23 1952-05-13 William E Kautenberg Reinforced sponge and method of reinforcing it
US2804728A (en) * 1954-11-18 1957-09-03 Politzer Alfred Abrasive article
US3256075A (en) * 1961-10-20 1966-06-14 Minnesota Mining & Mfg Abrasive sponge
FR1465778A (fr) * 1964-12-24 1967-01-13 Collo Rheincollodium Koln G M Procédé pour la fabrication d'une pièce de nettoyage et notamment une plaque nettoyante pour pot, ainsi que les pièces de nettoyage conformes à celles obtenues par le présent procédé ou procédé similaire
US3630800A (en) * 1966-07-01 1971-12-28 Johnson & Johnson Method of manufacturing an improved wiping cloth
US3619843A (en) * 1969-05-26 1971-11-16 American Cyanamid Co Sponges with dry impregnants
FR2299943A1 (fr) * 1975-02-05 1976-09-03 Schnuriger Karl Dispositif abrasif
FR2315897A1 (fr) * 1975-07-04 1977-01-28 Collo Gmbh Lavette pour les usages menagers, l'entretien des automobiles ou autres usages analogues

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT381057B (de) * 1981-02-21 1986-08-25 Joest Peter Schleifmittel-gebrauchsgegenstand
WO1998010897A1 (fr) * 1996-09-10 1998-03-19 Norton Company Meule
CN1080623C (zh) * 1996-09-10 2002-03-13 诺顿公司 砂轮及其模具和制造方法
EP3495369A1 (fr) 2007-06-13 2019-06-12 Incyte Holdings Corporation Utilisation des sels de l'inhibiteur de janus kinase (r)-3-(4-(7h-pyrrolo [2,3-d]pyrimidin-4-yl)-1h-pyrazol-1-yl)-3-cyclopentylpropanenitrile
US11446911B2 (en) 2016-02-26 2022-09-20 3M Innovative Properties Company Consumer scrubbing article with solvent-free texture layer and method of making same
WO2018067953A1 (fr) 2016-10-06 2018-04-12 The Procter & Gamble Company Procédé de fabrication d'une éponge de nettoyage abrasive
US10694916B2 (en) 2016-10-06 2020-06-30 The Procter & Gamble Company Method of manufacturing an abrasive sponge for cleaning

Also Published As

Publication number Publication date
EP0010408B1 (fr) 1983-02-16
DE2964833D1 (en) 1983-03-24
JPS5553537A (en) 1980-04-19

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