US2899288A - Method of forming an abrasive sheet - Google Patents

Method of forming an abrasive sheet Download PDF

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US2899288A
US2899288A US2899288DA US2899288A US 2899288 A US2899288 A US 2899288A US 2899288D A US2899288D A US 2899288DA US 2899288 A US2899288 A US 2899288A
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sheet
face
temporary
abrasive
softened state
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    • 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
    • B24D11/005—Making abrasive webs

Definitions

  • the present invention relates to a method for producing an abrasive sheet.
  • An object of the present invention is to provide a method for producing an abrasive sheet in which the backing is fabricated wholly of plastic material.
  • Another object of the present invention is to provide a method of producing an abrasive sheet in which the backing is fabricated wholly of plastic material and abrasive particles are integrally bound in a face of the backmg.
  • a further object of the present invention is to provide a method for producing an abrasive sheet which obviates the use of an adhesive.
  • a still further object of the present invention is to provide a method for producing an abrasive sheet which enables the abrasive particles to be embedded in a face of the plastic material backing of which the sheet is made.
  • Yet another object of the present invention is to provide a method for producing an abrasive sheet which is simple in execution, and commercially feasible.
  • Figmre 1 is a schematic view showing the apparatus used in carrying out the method of the present invention and showing the steps of the method of the present invention for forming an abrasive sheet;
  • Figure 2 is an isometric view of a portion of a sheet thus formed.
  • Figure 3 is a sectional view, on an enlarged scale taken on the line 3-3 of Figure 2.
  • the reference numeral designates generally the apparatus employed in carrying out the method of the present invention for forming an abrasive sheet.
  • a roll 12 of a web of cloth backing sheet fabricated of thermo-plastic material capable of being converted to a temporary softened state upon the application of heat thereto, such as polyethylene or the like is provided and is supported for free unrolling of the web of backing sheet.
  • the web of backing sheet, designated by the reference numeral 14 is fed with one face facing upwardly through a zone heated to a temperature suflicient to convert the upper face thereof to a temporary softened state.
  • the web 14 may be carried over a roller 16 and under the open end of a housing 18 having a coil or heating element 20 therein capable of heating the upper face of the web 14 to a temperature between 268 F. and 310 F.
  • a hopper 22 is supported over the web 14 and is used to apply abrasive material, as at 24, in a finely divided condition over the entire area of the upper face of the backing sheet.
  • the abrasive material was heated by a coil or heating element 26 to substantially the same temperature as the upper face of the backing sheet which is in the temporary softened state when it receives the finely divided abrasive material 24.
  • the abrasive material on the upper face of the Patented Aug. 11, 1959 ice backing sheet is spread over the entire area of the sheet by means of a spreader 28 or other suitable means.
  • the next step consists in introducing the backing sheet into the nip of rollers 30 and 32 so as to simultaneously press the abrasive material 24 into the upper surface of the backing sheet and cool the backing sheet and abrasive material, the upper roller 32 being provided with a connection 34 to a source of cooling fluid.
  • the lower roller 30 may also be filled by conventional means with a cooling fluid.
  • the cooling of the backing sheet effects the restoration of the plastic material in the sheet one face to the original state.
  • the web is next led over an idler roller 36 into engagement with the heaters 38 on the periphery of a beater drum 40 for shaking loose the unattached or unembedded particles of abrasive material.
  • the cooled sheet or web 14 is next led over another idler roller 42 and a still further idler roller 44 and is wound into the form of a roll or coil 46.
  • the roller 30 has an embossed surface for creating on the back of the web 14 an embossed pattern as at 48 in Figure 2.
  • This pattern may be of any design desired, the one illustrated having raised lines as at 50 in Figure 3 interspersed by recesses as at 52.
  • a table 54 is provided over which the web 14 travels and an endless belt of suitable material such as Teflon or the like travels over the rollers 16 and 30 and over the table 54 to effect the support and movement of the web 14 as it is heated and as the material 24 is applied thereto.
  • a tray 58 extends below the rollers 42 and 44 for collecting the unattached or loose abrasive material as it falls from the web 14.
  • the coil 46 forms a means of recovering the web after it has been treated.
  • the abrasive sheet as produced by the present invention is preferably cut into sheets instead of being formed into the coil 46.
  • the embossed backing pattern 48 provides a nonslip surface for the abrasive sheet of the present invention.
  • any suitable abrasive material may be embedded in the upper surface of the web 14 as desired.
  • thermo-plastic material of the backing sheet web 14 may be polyvinyl or polystyrene or other material found suitable and of the class which may be converted to a temporary softened state by the application of heat thereto.
  • the method of forming a backing sheet having an abrasive material on one face thereof which comprises providing a cloth backing sheet fabricated of thermoplastic material capable of being converted to a temporary softened state upon the application of heat thereto, feeding said sheet with one face facing upwardly through a zone heated to a temperature for conversion of said material to a temporary softened state to effect conversion of the material of said one face to a temporary softened state, applying abrasive material in a finely divided condition over the entire area of said sheet one face while in the temporary softened state, cooling the thus treated sheet to effect restoration of the thermoplastic material in said sheet one face to the original state, and recovering the thus cooled sheet.
  • the method of forming -a backing sheet having an abrasive material on one face thereof which comprises providing a cloth backing sheet fabricated of thermoplastic material capable of being converted to a temporary softened state upon the application of heat thereto, feeding said sheet with one face facing upwardly through a zone heated to a temperature for conversion of said material to a temporary softened state to effect conversion of the material of said one face to a temporary softened state, applying abrasive material in a finely divided condition over the'entire area of said sheet one face 'while'inthe"temporary'softened stateyspreadingthe applied abrasive material evenly over the entire area of the sheet one face, cooling the thus treated sheet to effect restoration of 'the 'thermo-plastic materiak in'fsaid 'Tarysoftened stateupon'the applicationof heat thereto, feeding said sheet with one face facing upwardly through a zone heated to a temperature for'c'onversion 'of said "material to atemporarysoftened state -toeflfect

Description

Aug. 11, 1 959 E. H. BARCLAY METHOD OF FORMING AN ABRASIVE SHEET Filed Jan; 10, 1958 FIG.
INVENTOR.
- E'flQLE f 542CZAK United States Patent METHOD OF FORMING AN ABRASIVE SHEET Earle H. Barclay, Cleveland, Ohio Application January 10, 1958, Serial No. 708,285
3 Claims. (Cl. 51-293) The present invention relates to a method for producing an abrasive sheet.
An object of the present invention is to provide a method for producing an abrasive sheet in which the backing is fabricated wholly of plastic material.
Another object of the present invention is to provide a method of producing an abrasive sheet in which the backing is fabricated wholly of plastic material and abrasive particles are integrally bound in a face of the backmg.
A further object of the present invention is to provide a method for producing an abrasive sheet which obviates the use of an adhesive.
A still further object of the present invention is to provide a method for producing an abrasive sheet which enables the abrasive particles to be embedded in a face of the plastic material backing of which the sheet is made.
Yet another object of the present invention is to provide a method for producing an abrasive sheet which is simple in execution, and commercially feasible.
These and other objects of the present invention will be fully apparent from the following description when taken in conjunction with the annexed drawing, in which:
Figmre 1 is a schematic view showing the apparatus used in carrying out the method of the present invention and showing the steps of the method of the present invention for forming an abrasive sheet;
Figure 2 is an isometric view of a portion of a sheet thus formed; and
Figure 3 is a sectional view, on an enlarged scale taken on the line 3-3 of Figure 2.
Referring to the drawing, the reference numeral designates generally the apparatus employed in carrying out the method of the present invention for forming an abrasive sheet. A roll 12 of a web of cloth backing sheet fabricated of thermo-plastic material capable of being converted to a temporary softened state upon the application of heat thereto, such as polyethylene or the like is provided and is supported for free unrolling of the web of backing sheet. The web of backing sheet, designated by the reference numeral 14, is fed with one face facing upwardly through a zone heated to a temperature suflicient to convert the upper face thereof to a temporary softened state. The web 14 may be carried over a roller 16 and under the open end of a housing 18 having a coil or heating element 20 therein capable of heating the upper face of the web 14 to a temperature between 268 F. and 310 F.
A hopper 22 is supported over the web 14 and is used to apply abrasive material, as at 24, in a finely divided condition over the entire area of the upper face of the backing sheet. Preferably, the abrasive material was heated by a coil or heating element 26 to substantially the same temperature as the upper face of the backing sheet which is in the temporary softened state when it receives the finely divided abrasive material 24.
Next, the abrasive material on the upper face of the Patented Aug. 11, 1959 ice backing sheet is spread over the entire area of the sheet by means of a spreader 28 or other suitable means.
The next step consists in introducing the backing sheet into the nip of rollers 30 and 32 so as to simultaneously press the abrasive material 24 into the upper surface of the backing sheet and cool the backing sheet and abrasive material, the upper roller 32 being provided with a connection 34 to a source of cooling fluid. If desired, the lower roller 30 may also be filled by conventional means with a cooling fluid. The cooling of the backing sheet effects the restoration of the plastic material in the sheet one face to the original state. The web is next led over an idler roller 36 into engagement with the heaters 38 on the periphery of a beater drum 40 for shaking loose the unattached or unembedded particles of abrasive material.
The cooled sheet or web 14 is next led over another idler roller 42 and a still further idler roller 44 and is wound into the form of a roll or coil 46.
Preferably, the roller 30 has an embossed surface for creating on the back of the web 14 an embossed pattern as at 48 in Figure 2. This pattern may be of any design desired, the one illustrated having raised lines as at 50 in Figure 3 interspersed by recesses as at 52.
Preferably, a table 54 is provided over which the web 14 travels and an endless belt of suitable material such as Teflon or the like travels over the rollers 16 and 30 and over the table 54 to effect the support and movement of the web 14 as it is heated and as the material 24 is applied thereto. A tray 58 extends below the rollers 42 and 44 for collecting the unattached or loose abrasive material as it falls from the web 14. The coil 46 forms a means of recovering the web after it has been treated.
The abrasive sheet as produced by the present invention is preferably cut into sheets instead of being formed into the coil 46. The embossed backing pattern 48 provides a nonslip surface for the abrasive sheet of the present invention. Further, any suitable abrasive material may be embedded in the upper surface of the web 14 as desired.
While the above described backing is formed of polyethylene, the thermo-plastic material of the backing sheet web 14 may be polyvinyl or polystyrene or other material found suitable and of the class which may be converted to a temporary softened state by the application of heat thereto.
What is claimed is:
1. The method of forming a backing sheet having an abrasive material on one face thereof which comprises providing a cloth backing sheet fabricated of thermoplastic material capable of being converted to a temporary softened state upon the application of heat thereto, feeding said sheet with one face facing upwardly through a zone heated to a temperature for conversion of said material to a temporary softened state to effect conversion of the material of said one face to a temporary softened state, applying abrasive material in a finely divided condition over the entire area of said sheet one face while in the temporary softened state, cooling the thus treated sheet to effect restoration of the thermoplastic material in said sheet one face to the original state, and recovering the thus cooled sheet.
2. The method of forming -a backing sheet having an abrasive material on one face thereof which comprises providing a cloth backing sheet fabricated of thermoplastic material capable of being converted to a temporary softened state upon the application of heat thereto, feeding said sheet with one face facing upwardly through a zone heated to a temperature for conversion of said material to a temporary softened state to effect conversion of the material of said one face to a temporary softened state, applying abrasive material in a finely divided condition over the'entire area of said sheet one face 'while'inthe"temporary'softened stateyspreadingthe applied abrasive material evenly over the entire area of the sheet one face, cooling the thus treated sheet to effect restoration of 'the 'thermo-plastic materiak in'fsaid 'Tarysoftened stateupon'the applicationof heat thereto, feeding said sheet with one face facing upwardly through a zone heated to a temperature for'c'onversion 'of said "material to atemporarysoftened state -toeflfect conversion of the material of said one face to a temporary "softened" state; applying 'abrasive-materiahin a 'finely'divided condition and in a heated state over the entire area of said sheet one face while in the temporary softened state, simultaneously pressing and cooling the thus treated sheet to efiect restoration of the thermo-plastic material in said sheet one face to the original state, and recovering the thus cooled sheet.
"'References 'Cited in th'file'of this patent UNITED "STATES PATENTS a on Sept; 12; 1950 Lotz Jan. 4, 1955 Storrs et al. July 12, 1955

Claims (1)

1. THE METHOD OF FORMING A BACKING SHEET HAVING AN ABRASIVE MATERIAL ON ONE FACE THEREOF WHICH COMPRISES PROVIDING A CLOTH BACKING SHEET FABRICATED OF THERMOPLASTIC MATERIAL CAPABLE OF BEING CONVERTED TO A TEMPORARY SOFTENED STATE UPON THE APPLICATION OF HEAT THERETO, FEEDING SAID SHEET WITH ONE FACE FACING UPWARDLY THROUGH A ZONE HEATED TO A TEMPERATURE FOR CONVERSION OF SAID MATERIAL TO A TEMPORARY SOFTENED STATE TO EFFECT CONVERSION OF THE MATERIAL OF SAID ONE FACE TO A TEMPORARY SOFTENED STATE, APPLYING ABRASIVE MATERIAL IN A FINELY DIVIDED CONDITION OVER THE ENTIRE AREA OF SAID SHEET ONE FACE WHILE IN THE TEMPORARY SOFTENED STATE, COOLING THE THUS TREATED SHEET TO EFFECT RESTORATION OF THE THERMOPLASTIC MATERIAL IN SAID SHEET ONE FACE TO THE ORIGINAL STATE, AND RECOVERING THE THUS COOLED SHEET.
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Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996368A (en) * 1958-12-11 1961-08-15 Bell Telephone Labor Inc Abrasive fabrics
US3037852A (en) * 1959-11-02 1962-06-05 Abrasive Products Inc Method of producing abrasive rolls and sheets
US3039243A (en) * 1959-04-06 1962-06-19 Thompson Ramo Wooldridge Inc Finishing method and apparatus
US3053020A (en) * 1959-04-21 1962-09-11 Carborundum Co Sectional coated abrasive belt and process of making the same
US3090167A (en) * 1959-09-30 1963-05-21 Ackerman Arthur Apparatus for skiving abrasive bands for formation of abrasive belts therefrom
US3116574A (en) * 1960-07-15 1964-01-07 Metal Textile Corp Disposable pot cleaner and scourer
US3116986A (en) * 1960-03-25 1964-01-07 Cincinnati Milling Machine Co Method of making cold-molded abrasive wheel
US3137107A (en) * 1961-09-19 1964-06-16 Ici Ltd Buffing mops
US3146560A (en) * 1960-06-14 1964-09-01 Rexall Drug Chemical Abrasive products
US3192679A (en) * 1961-10-09 1965-07-06 Gen Foods Corp Scouring articles
US3197294A (en) * 1962-08-14 1965-07-27 Donald R Adams Process of forming manicure implements
US3246969A (en) * 1959-10-07 1966-04-19 Minnesota Mining & Mfg Abrasive coated backing of linear polymono-alpha-olefinic hydrocarbon
US3255555A (en) * 1963-12-24 1966-06-14 Albert A Heyman Apparatus for forming surfaces of optical elements
US3295940A (en) * 1962-12-19 1967-01-03 Du Pont Abrasive resinous polymer compositions and their preparation
US3353308A (en) * 1963-06-04 1967-11-21 Zane Riccardo Flexible abrasive disc
US3401490A (en) * 1965-03-24 1968-09-17 Mora Alcide Process for manufacturing resiliently yielding bases provided with abrasive surfaces and product thus obtained
DE2256079A1 (en) * 1972-11-16 1974-05-30 Ted Bildplatten Process for the production of an abrasive film
US3906684A (en) * 1971-05-20 1975-09-23 Norton Co Abrasive articles and their method of manufacture
US4049396A (en) * 1973-05-01 1977-09-20 National Research Development Corporation Molded abrasive article comprising non-foamed, friable polyurethane and process
US4162900A (en) * 1976-09-13 1979-07-31 The Hutson Corporation Composition having improved wear resistant and compression resilient properties
US4187082A (en) * 1974-06-17 1980-02-05 Guerra Humberto R Dental finishing strips
US4240807A (en) * 1976-01-02 1980-12-23 Kimberly-Clark Corporation Substrate having a thermoplastic binder coating for use in fabricating abrasive sheets and abrasive sheets manufactured therewith
US4243395A (en) * 1979-06-13 1981-01-06 Rca Corporation Method for precision grinding of hard, pointed materials
US5109638A (en) * 1989-03-13 1992-05-05 Microsurface Finishing Products, Inc. Abrasive sheet material with non-slip backing
US5436063A (en) * 1993-04-15 1995-07-25 Minnesota Mining And Manufacturing Company Coated abrasive article incorporating an energy cured hot melt make coat
EP0713731A1 (en) * 1994-11-25 1996-05-29 Netlon Limited Applying grit particles to a continuous web
US5612081A (en) * 1994-11-25 1997-03-18 Netlon Limited Applying grit particles to a continuous web
EP0901408A1 (en) * 1996-04-10 1999-03-17 Gse Lining Technology Inc. System and method for forming a textured surface on a geomembrane
US6013222A (en) * 1995-12-08 2000-01-11 3M Innovative Properties Company Method of producing sheet material incorporating particulate matter
US6024824A (en) * 1997-07-17 2000-02-15 3M Innovative Properties Company Method of making articles in sheet form, particularly abrasive articles
US6030701A (en) * 1993-04-15 2000-02-29 3M Innovative Properties Company Melt-flowable materials and method of sealing surfaces
US6183677B1 (en) * 1995-10-31 2001-02-06 Kovax Corporation Method of manufacturing abrasive sheet with thin resin film
US20020074110A1 (en) * 2000-12-15 2002-06-20 Carrier Corporation Method for making a film with improved wettability properties
US6485589B1 (en) 1993-04-15 2002-11-26 3M Innovative Properties Company Melt-flowable materials and method of sealing surfaces
WO2003099464A1 (en) * 2002-05-20 2003-12-04 Duracase Proprietary, Llc Scratch resistant thermoplastic article
US20050118397A1 (en) * 2003-12-02 2005-06-02 Horwitz David J. Repairable thermoplastic material
US20100009604A1 (en) * 2006-04-14 2010-01-14 3M Innovative Properties Company Laminated flexible resilient abrasive article
US20140338274A1 (en) * 2011-08-10 2014-11-20 Thermagrip, Ltd. Anti-slip step treatment
EP3501735A1 (en) * 2017-12-21 2019-06-26 Burtscher, Gerhard Method for producing a grinding tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522351A (en) * 1949-08-15 1950-09-12 Rohm & Haas Plastic chalkboard
US2698504A (en) * 1949-12-21 1955-01-04 Harvel Res Corp Novel glass fabric buffer wheel
US2712987A (en) * 1951-10-09 1955-07-12 Hartford Special Machinery Co Abrading belt and method of making it

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522351A (en) * 1949-08-15 1950-09-12 Rohm & Haas Plastic chalkboard
US2698504A (en) * 1949-12-21 1955-01-04 Harvel Res Corp Novel glass fabric buffer wheel
US2712987A (en) * 1951-10-09 1955-07-12 Hartford Special Machinery Co Abrading belt and method of making it

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996368A (en) * 1958-12-11 1961-08-15 Bell Telephone Labor Inc Abrasive fabrics
US3039243A (en) * 1959-04-06 1962-06-19 Thompson Ramo Wooldridge Inc Finishing method and apparatus
US3053020A (en) * 1959-04-21 1962-09-11 Carborundum Co Sectional coated abrasive belt and process of making the same
US3090167A (en) * 1959-09-30 1963-05-21 Ackerman Arthur Apparatus for skiving abrasive bands for formation of abrasive belts therefrom
US3246969A (en) * 1959-10-07 1966-04-19 Minnesota Mining & Mfg Abrasive coated backing of linear polymono-alpha-olefinic hydrocarbon
US3037852A (en) * 1959-11-02 1962-06-05 Abrasive Products Inc Method of producing abrasive rolls and sheets
US3116986A (en) * 1960-03-25 1964-01-07 Cincinnati Milling Machine Co Method of making cold-molded abrasive wheel
US3146560A (en) * 1960-06-14 1964-09-01 Rexall Drug Chemical Abrasive products
US3116574A (en) * 1960-07-15 1964-01-07 Metal Textile Corp Disposable pot cleaner and scourer
US3137107A (en) * 1961-09-19 1964-06-16 Ici Ltd Buffing mops
US3192679A (en) * 1961-10-09 1965-07-06 Gen Foods Corp Scouring articles
US3197294A (en) * 1962-08-14 1965-07-27 Donald R Adams Process of forming manicure implements
US3295940A (en) * 1962-12-19 1967-01-03 Du Pont Abrasive resinous polymer compositions and their preparation
US3353308A (en) * 1963-06-04 1967-11-21 Zane Riccardo Flexible abrasive disc
US3255555A (en) * 1963-12-24 1966-06-14 Albert A Heyman Apparatus for forming surfaces of optical elements
US3401490A (en) * 1965-03-24 1968-09-17 Mora Alcide Process for manufacturing resiliently yielding bases provided with abrasive surfaces and product thus obtained
US3906684A (en) * 1971-05-20 1975-09-23 Norton Co Abrasive articles and their method of manufacture
DE2256079A1 (en) * 1972-11-16 1974-05-30 Ted Bildplatten Process for the production of an abrasive film
US3985521A (en) * 1972-11-16 1976-10-12 Ted Bildplatten Aktiengesellschaft Method for producing a grinding foil
US4049396A (en) * 1973-05-01 1977-09-20 National Research Development Corporation Molded abrasive article comprising non-foamed, friable polyurethane and process
US4187082A (en) * 1974-06-17 1980-02-05 Guerra Humberto R Dental finishing strips
US4240807A (en) * 1976-01-02 1980-12-23 Kimberly-Clark Corporation Substrate having a thermoplastic binder coating for use in fabricating abrasive sheets and abrasive sheets manufactured therewith
US4162900A (en) * 1976-09-13 1979-07-31 The Hutson Corporation Composition having improved wear resistant and compression resilient properties
US4243395A (en) * 1979-06-13 1981-01-06 Rca Corporation Method for precision grinding of hard, pointed materials
US5109638A (en) * 1989-03-13 1992-05-05 Microsurface Finishing Products, Inc. Abrasive sheet material with non-slip backing
US5582672A (en) * 1993-04-15 1996-12-10 Minnesota Mining And Manufacturing Company Method of preparing a coated abrasive article that incorporates an energy cured make coat
US7575653B2 (en) 1993-04-15 2009-08-18 3M Innovative Properties Company Melt-flowable materials and method of sealing surfaces
US5436063A (en) * 1993-04-15 1995-07-25 Minnesota Mining And Manufacturing Company Coated abrasive article incorporating an energy cured hot melt make coat
US5776290A (en) * 1993-04-15 1998-07-07 Minnesota Mining And Manufacturing Company Method of preparing a coated abrasive article by laminating an energy-curable pressure sensitive adhesive film to a backing
US5834109A (en) * 1993-04-15 1998-11-10 Minnesota Mining And Manufacturing Company Presized backing for a coated abrasive article
US6485589B1 (en) 1993-04-15 2002-11-26 3M Innovative Properties Company Melt-flowable materials and method of sealing surfaces
US6030701A (en) * 1993-04-15 2000-02-29 3M Innovative Properties Company Melt-flowable materials and method of sealing surfaces
US20020011308A1 (en) * 1993-04-15 2002-01-31 Michael A. Johnson Melt-flowable materials and method of sealing surfaces
US5612081A (en) * 1994-11-25 1997-03-18 Netlon Limited Applying grit particles to a continuous web
EP0713730A3 (en) * 1994-11-25 1998-12-30 Netlon Limited Applying grit particles to a continuous web
EP0713731A1 (en) * 1994-11-25 1996-05-29 Netlon Limited Applying grit particles to a continuous web
US6183677B1 (en) * 1995-10-31 2001-02-06 Kovax Corporation Method of manufacturing abrasive sheet with thin resin film
US6013222A (en) * 1995-12-08 2000-01-11 3M Innovative Properties Company Method of producing sheet material incorporating particulate matter
EP0901408A4 (en) * 1996-04-10 2001-10-04 Gse Lining Technology Inc System and method for forming a textured surface on a geomembrane
EP0901408A1 (en) * 1996-04-10 1999-03-17 Gse Lining Technology Inc. System and method for forming a textured surface on a geomembrane
US6258201B1 (en) 1997-07-17 2001-07-10 3M Innovative Properties Company Method of making articles in sheet form, particularly abrasive articles
US6024824A (en) * 1997-07-17 2000-02-15 3M Innovative Properties Company Method of making articles in sheet form, particularly abrasive articles
US20020074110A1 (en) * 2000-12-15 2002-06-20 Carrier Corporation Method for making a film with improved wettability properties
US7658968B2 (en) * 2000-12-15 2010-02-09 Carrier Corporation Method for making a film with improved wettability properties
US20040234749A1 (en) * 2002-05-20 2004-11-25 Horwitz David J. Scratch resistant thermoplastic
US20060141214A1 (en) * 2002-05-20 2006-06-29 Duracase Proprietary Llc Scratch resistant thermoplastic article
WO2003099464A1 (en) * 2002-05-20 2003-12-04 Duracase Proprietary, Llc Scratch resistant thermoplastic article
US7588821B2 (en) 2002-05-20 2009-09-15 Duracase Proprietary Llc Scratch resistant thermoplastic article
US20050118397A1 (en) * 2003-12-02 2005-06-02 Horwitz David J. Repairable thermoplastic material
US20100009604A1 (en) * 2006-04-14 2010-01-14 3M Innovative Properties Company Laminated flexible resilient abrasive article
US9221152B2 (en) * 2006-04-14 2015-12-29 3M Innovative Properties Company Laminated flexible resilient abrasive article
US20140338274A1 (en) * 2011-08-10 2014-11-20 Thermagrip, Ltd. Anti-slip step treatment
US9714513B2 (en) * 2011-08-10 2017-07-25 Thermapply Limited Anti-slip step treatment
EP3501735A1 (en) * 2017-12-21 2019-06-26 Burtscher, Gerhard Method for producing a grinding tool

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