# US 5,344,521 A · Coating film separating device and coating film separation method using the device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,344,521 A - Document ID: US5344521A - Status: Granted - Kind: A - Application number: 07/863,753 - Filed: 1992-04-06 - Granted: 1994-09-06 - Earliest claimed: 1991-04-10 - Assignees: Canon Kabushiki Kaisha - Inventors: Satoshi Ohsaki - Web page: https://patentgrep.com/patent/US5344521A ## CPC - B29C 63/0013: {Removing old coatings} - B26D 3/28: Splitting layers from work; Mutually separating layers by cutting (B26D3/30 takes precedence; Recovery of plastics or other constituents of waste material containing plastics B29B17/00) - Y10S 271/90: Stripper - Y10T 156/1126: Using direct fluid current against work during delaminating - Y10T 156/1922: Vibrating delaminating means - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B26D: CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING (for growing crops or plants A01D, A01G; for fodder or straw A01F; for bulk butter A01J; for dough A21C; slaughtering A22B; for tobacco, cigars or cigarettes A24; marking-out, perforating or making buttonholes A41H25/00; manufacturing footwear A43D; brushmaking A46D; surgery A61B; disintegrating, mincing or shredding in general B02C; cutting wire, making pins or nails B21F, B21G; of the kind used formetal B23; cutting by abrasive fluid jets B24C5/02; hand-held cutting tools B26B; perforating, cutting-out, stamping-out or punching, or severing by means other than cutting B26F; for wood B27; for stone B28D; working of plastics or substances in a plastic state B29; making boxes, cartons, envelopes or bags, of paper or similarly worked materials, e.g. metal foil, B31B; article or web delivery apparatus incorporating cutting or line-perforating devices B65H35/00; for leather or upholstery B68, C14B; for glass C03B; making matches C06F; for peat C10F; for sugar C13B45/00; for textile materials D06H; civil engineering, building, mining, see Section E; for light guides G02B6/25; cutting processed photographic material G03D15/04) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A coating film separating device includes a substrate holding device for holding a substrate, at least one side of which is covered with a coating film, a roller unit equipped with a roller and a device for pressing the roller against an end portion of the surface of the coating film, a roller unit driving device for moving the roller unit on the end portion of the surface of the coating film in the widthwise direction of the substrate, a guide device for enabling the roller unit to move along an end portion of the substrate, and a device for spraying pressurized fluid at the interface between the substrate and the coating film at the edge portion of the substrate along which the roller unit moves. ## Claims ### Claim 1 A coating film separating device comprising: substrate holding means for holding a substrate having first and second surfaces, with at least one surface being covered with a coating film; a roller unit equipped with a roller and means for pressing said roller against an edge portion of a surface of the coating film; roller unit driving means for moving said roller unit on the edge portion of the surface of the coating film in a widthwise direction of the substrate; guide means for guiding said roller unit to move along an edge portion of the substrate; spraying means for spraying pressurized fluid at an interface between the substrate and the coating film at the edge portion of the substrate along which said roller unit moves; and substrate reversing means for turning the substrate from a first surface-up position to a second surface-up position. ### Claim 2 (depends on 1) A coating film separating device according to claim 1, wherein said roller unit driving means includes means for rotatively driving said roller about its own axis. ### Claim 3 (depends on 1) A coating film separating device according to claim 1, wherein said roller unit driving means includes a rack formed on said guide means and a motor with a driving shaft engaging with said rack. ### Claim 4 (depends on 1) A coating film separating device according to claim 1, further comprising means for conveying the substrate in a longitudinal direction and means for raising and lowering said substrate holding means. ### Claim 5 (depends on 1) A coating film separating device according to claim 1, wherein said substrate holding means includes vacuum means for applying a vacuum force to the substrate, and a substrate fixing stand having a surface against which the substrate is adhered to by the vacuum force. ### Claim 6 (depends on 1) A coating film separating device according to claim 1, wherein a peripheral surface of said roller has teeth extending in a parallel direction to a longitudinal axis of said roller. ### Claim 7 (depends on 6) A coating film separating device according to claim 6, wherein said teeth provided on the peripheral surface of said roller have a depth ranging from 0.3 to 3 mm. ### Claim 8 (depends on 6) A coating film separating device according to claim 6, wherein said teeth provided on the peripheral surface of said roller have a pitch ranging from 0.2 to 2 mm. ### Claim 9 (depends on 1) A coating film separating device according to claim 1, wherein said roller has a diameter ranging from 10 to 30 mm. ### Claim 10 (depends on 1) A coating film separating device according to claim 1, wherein said roller is pressed against the surface of the coating film with a force ranging from 0.15 to 0.5 kgf/mm. ### Claim 11 (depends on 10) A coating film separating device according to claim 10, wherein said roller is pressed against the surface of the coating film with a force ranging from 0.25 to 0.3 kgf/mm. ### Claim 12 (depends on 1) A coating film separating device according to claim 1, wherein said roller and the substrate overlap each other by a distance ranging from 5 to 15 mm. ### Claim 13 (depends on 1) A coating film separating device according to claim 1, wherein said roller is arranged such that its rotational axis is at an angle of 10.degree. to 40.degree. with respect to an axis extending in a longitudinal direction of the substrate. ### Claim 14 (depends on 1) A coating film separating device according to claim 1, wherein said roller is formed of carbon steel. ### Claim 15 A coating film separating device comprising: substrate holding means for holding a substrate having first and second surfaces, with at least one surface being covered with a coating film; a roller unit equipped with a roller and means for pressing said roller against an edge portion of a surface of the coating film; roller unit driving means for moving said roller unit on the edge portion of the surface of the coating film in a widthwise direction of the substrate; guide means for guiding said roller unit to move along an edge portion of the substrate; spraying means for spraying pressurized fluid at an interface between the substrate and the coating film at the edge portion of said substrate along which said roller unit moves; coating film removing means for removing the coating film from the substrate, said removing means including coating film gripping means for gripping an end portion of the coating film separated from the substrate and means for moving said coating film gripping means in a direction perpendicular to the widthwise direction of the substrate; and substrate reversing means for turning the substrate from a first surface-up position to a second surface-up position. ### Claim 16 (depends on 15) A coating film separating device according to claim 15, further comprising means for conveying the substrate in a longitudinal direction and means for raising and lowering said substrate holding means. ### Claim 17 (depends on 15) A coating film separating device according to claim 15, wherein said roller unit driving means includes means for rotatively driving said roller about is own axis. ### Claim 18 (depends on 15) A coating film separating device according to claim 15, wherein said roller unit driving means includes a rack formed on said guide means and a motor with a driving shaft engaging with said rack. ### Claim 19 (depends on 15) A coating film separating device according to claim 15, wherein the coating film gripping means includes a coating film gripping unit equipped with a stationary jaw and a movable jaw. ### Claim 20 (depends on 15) A coating film separating device according to claim 15, wherein said substrate holding means includes vacuum means for applying a vacuum force to the substrate, and a substrate fixing stand having a surface to which the surface is adhered by the vacuum force. ### Claim 21 (depends on 15) A coating film separating device according to claim 15, wherein a peripheral surface of said roller has teeth extending in a parallel direction to a longitudinal axis of said roller. ### Claim 22 (depends on 21) A coating film separating device according to claim 21, wherein said teeth provided on the peripheral surface of said roller have a depth ranging from 0.3 to 3 mm. ### Claim 23 (depends on 21) A coating film separating device according to claim 21, wherein said teeth provided on the peripheral surface of said roller have a pitch ranging from 0.2 to 2 mm. ### Claim 24 (depends on 15) A coating film separating device according to claim 15, wherein said roller has a diameter ranging from 10 to 30 mm. ### Claim 25 (depends on 15) A coating film separating device according to claim 15, wherein said roller is pressed against the surface of the coating film with a force ranging from 0.15 to 0.5 kgf/mm. ### Claim 26 (depends on 15) A coating film separating device according to claim 15, wherein said roller is pressed against the surface of the coating film with a force ranging from 0.25 to 0.3 kgf/mm. ### Claim 27 (depends on 15) A coating film separating device according to claim 15, wherein said roller and the substrate overlap each other by a distance ranging from 5 to 15 mm. ### Claim 28 (depends on 15) A coating film separating device according to claim 15, wherein said roller is arranged such that its rotational axis is at an angle of 10.degree. to 40.degree. with respect to an axis extending in a longitudinal direction of the substrate. ### Claim 29 (depends on 15) A coating film separating device according to claim 15, wherein said roller is formed of carbon steel.