Film peeling device

Abstract

To provide a film peeling device capable of smoothly peeling off a film stuck to a curved substrate in a curved state from the curved substrate.SOLUTION: A film peeling device 100 of the present invention includes: a transport part 20 that transports a curved multilayer laminate 15 and a curved substrate; and a peeling part 50 that peels off a protective film 12 from the curved multilayer laminate 15. A first rotating roller 67 included in the peeling part 50 is configured to be movable along a direction perpendicular to a conveying direction of the curved multilayer laminate 15 by an operation of first moving means included in the peeling part 50.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a film peeling device.

Background Art

[0002] In recent years, as lenses for eyewear such as glasses and sunglasses, in order to improve their design and impart optical properties such as polarization to the lenses, an optical sheet having properties such as design and polarization has been proposed to be provided on its surface.

[0003] A lens having such an optical sheet on its surface is manufactured, for example, by preparing an optical sheet having a flat plate shape in plan view, attaching protective films to both surfaces of this optical sheet, and punching out the optical sheet into a predetermined shape such as a circular shape in plan view. Then, by subjecting this optical sheet to thermoforming under heating, a curved optical sheet having a curved convex surface and a curved concave surface, which is formed into a curved shape by thermoforming, is obtained. And after peeling the protective film from the curved optical sheet, a resin layer mainly composed of a resin material is formed on the concave surface of this curved optical sheet by using an injection molding method or the like (for example, see Patent Document 1).

[0004] In such a method for manufacturing a lens, as described above, the protective film is peeled from the curved optical sheet obtained through the thermoforming step of thermoforming the optical sheet, and then the process proceeds to the resin layer forming step of forming a resin layer on the concave surface of the curved optical sheet. Thus, when shifting from the thermoforming step to the resin layer forming step, it is necessary to peel the protective film from the curved optical sheet in which the optical sheet has been formed into a curved shape.

[0005] While it is conceivable to remove the protective film from this curved optical sheet manually, manually removing it from multiple optical sheets is inefficient. Therefore, it is conceivable to improve efficiency by using a film peeling device, such as the one described in Patent Document 2. However, in this case, there is a problem in that the protective film cannot be smoothly peeled off the curved optical sheet due to its curved shape. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2009-294445 [Patent Document 2] Japanese Patent Publication No. 2019-102626 [Overview of the project] [Problems that the invention aims to solve]

[0007] The object of the present invention is to provide a film peeling device that can smoothly peel a film attached to a curved substrate from the curved substrate. [Means for solving the problem]

[0008] The purpose of this is as follows (1) ~ ( 8 This is achieved by the present invention as described in ). (1) A film peeling apparatus used to obtain a curved substrate by peeling off the first and second films from a curved multilayer laminate comprising a curved substrate having one side as a curved concave surface and the other side as a curved convex surface, a first film attached to the curved concave surface, and a second film attached to the curved convex surface, The system comprises a transport unit for transporting the curved multilayer laminate and the curved substrate, and a peeling unit for peeling the first film and the second film from the curved multilayer laminate. The transport unit comprises a first transport unit located upstream of the peeling unit in the transport direction for transporting the curved multilayer laminate, which transports and supplies the curved multilayer laminate to the peeling unit, and a second transport unit located downstream of the peeling unit in the transport direction, which receives and transports the curved substrate from the peeling unit after the first and second films have been peeled off from the curved multilayer laminate in the peeling unit. The peeling section has a first peeling section located on the curved concave side in a direction perpendicular to the transport direction and for peeling the first film from the curved multilayer laminate, and a second peeling section located on the curved convex side in a direction perpendicular to the transport direction and for peeling the second film from the curved multilayer laminate. The first peeling section comprises a first unwinding roller located upstream in the conveying direction and around which a first adhesive sheet having adhesive properties is wound; a first winding roller located downstream in the conveying direction and winding up the first adhesive sheet; and a first rotating roller located between the first unwinding roller and the first winding roller in the conveying direction, in which the first adhesive sheet is wrapped around and rotated while in contact with the first adhesive sheet in the longitudinal direction. The second peeling section comprises a second unwinding roller located upstream in the conveying direction, around which a second adhesive sheet having adhesive properties is wound; a second winding roller located downstream in the conveying direction for winding up the second adhesive sheet; and a second rotating roller located between the second unwinding roller and the second winding roller in the conveying direction, in which the second adhesive sheet is wrapped around and rotated while in contact with the middle of the second adhesive sheet in its longitudinal direction. The first peeling section further includes a first moving means for moving the first rotating roller in the orthogonal direction, The first rotating roller is configured to be movable along the orthogonal direction by the operation of the first moving means, and when supplying the curved multilayer laminate from the first conveying unit to the peeling portion, the first rotating roller and the second rotating roller are arranged at a position where the curved multilayer laminate can be sandwiched with a sandwiching distance. By this sandwiching and the rotation of the first rotating roller and the second rotating roller, the curved multilayer laminate is sent out toward the second conveying unit side, and the first film is peeled off from the curved multilayer laminate by the first adhesive sheet, and the second film is peeled off from the curved multilayer laminate by the second adhesive sheet. Occasionally, The second peeling section further includes a second moving means for moving the second rotating roller in the orthogonal direction, The second rotating roller is configured to be movable along the orthogonal direction by the operation of the second moving means, The first rotating roller and the second rotating roller are positioned such that the central axis of the first rotating roller along the orthogonal direction and the central axis of the second rotating roller along the orthogonal direction overlap in the conveying direction. Prior to supplying the curved multilayer laminate from the first transport unit to the peeling unit, The distance between the first rotating roller and the second rotating roller is set to the magnitude of the clamping distance. When the curved multilayer laminate comes into contact with the first adhesive sheet, the first and second rotating rollers move along the orthogonal direction from the first peeling portion side to the second peeling portion side by the operation of the first and second moving means, respectively, so that the separation distance maintains the clamping distance when the curved multilayer laminate is supplied between the first and second rotating rollers. A film peeling device characterized by the above.

[0012] ( 2 ) When supplying the curved multilayer laminate between the first rotating roller and the second rotating roller, the tangent at the end portion of the curved multilayer laminate that contacts the first adhesive sheet is parallel to the conveying direction. (1) The film peeling device according to the above. (3) A film peeling apparatus used to obtain a curved substrate by peeling off the first and second films from a curved multilayer laminate comprising a curved substrate having one side as a curved concave surface and the other side as a curved convex surface, a first film attached to the curved concave surface, and a second film attached to the curved convex surface, The system comprises a transport unit for transporting the curved multilayer laminate and the curved substrate, and a peeling unit for peeling the first film and the second film from the curved multilayer laminate. The transport unit comprises a first transport unit located upstream of the peeling unit in the transport direction for transporting the curved multilayer laminate, which transports and supplies the curved multilayer laminate to the peeling unit, and a second transport unit located downstream of the peeling unit in the transport direction, which receives and transports the curved substrate from the peeling unit after the first and second films have been peeled off from the curved multilayer laminate in the peeling unit. The peeling section has a first peeling section located on the curved concave side in a direction perpendicular to the transport direction and for peeling the first film from the curved multilayer laminate, and a second peeling section located on the curved convex side in a direction perpendicular to the transport direction and for peeling the second film from the curved multilayer laminate. The first peeling section comprises a first unwinding roller located upstream in the conveying direction and around which a first adhesive sheet having adhesive properties is wound; a first winding roller located downstream in the conveying direction and winding up the first adhesive sheet; and a first rotating roller located between the first unwinding roller and the first winding roller in the conveying direction, in which the first adhesive sheet is wrapped around and rotated while in contact with the first adhesive sheet in the longitudinal direction. The second peeling section comprises a second unwinding roller located upstream in the conveying direction, around which a second adhesive sheet having adhesive properties is wound; a second winding roller located downstream in the conveying direction for winding up the second adhesive sheet; and a second rotating roller located between the second unwinding roller and the second winding roller in the conveying direction, in which the second adhesive sheet is wrapped around and rotated while in contact with the middle of the second adhesive sheet in its longitudinal direction. The first peeling section further includes a first moving means for moving the first rotating roller in the orthogonal direction, The first rotating roller is configured to be movable along the orthogonal direction by the operation of the first moving means, and is positioned at a clamping distance such that the first rotating roller and the second rotating roller can clamp the curved multilayer laminate when the curved multilayer laminate is supplied from the first conveying unit to the peeling unit, and is configured such that the first film is peeled off the curved multilayer laminate by the first adhesive sheet and the second film is peeled off the curved multilayer laminate by the second adhesive sheet. The second peeling section further includes a second moving means for moving the second rotating roller in the orthogonal direction, The second rotating roller is configured to be movable along the orthogonal direction by the operation of the second moving means, The first rotating roller and the second rotating roller are positioned such that the central axis of the first rotating roller along the orthogonal direction and the central axis of the second rotating roller along the orthogonal direction overlap in the conveying direction. Prior to supplying the curved multilayer laminate from the first transport unit to the peeling unit, [[ID=第48]] The distance between the first rotating roller and the second rotating roller is set to be greater than the magnitude of the clamping distance. When the curved multilayer laminate comes into contact with the first adhesive sheet, the first rotating roller moves along the orthogonal direction from the first peeling portion side to the second peeling portion side by the operation of the first moving means, and is configured to be positioned such that the separation distance is the clamping distance when the curved multilayer laminate is supplied between the first rotating roller and the second rotating roller. A film peeling apparatus characterized in that, when the curved multilayer laminate is supplied between the first rotating roller and the second rotating roller, the tangent at the end of the curved multilayer laminate that contacts the first adhesive sheet is parallel to the conveying direction.

[0013] ( 4 ) A film peeling apparatus used to obtain a curved substrate by peeling off the first and second films from a curved multilayer laminate comprising a curved substrate having one side as a curved concave surface and the other side as a curved convex surface, a first film attached to the curved concave surface, and a second film attached to the curved convex surface, The system comprises a transport unit for transporting the curved multilayer laminate and the curved substrate, and a peeling unit for peeling the first film and the second film from the curved multilayer laminate. The transport unit comprises a first transport unit located upstream of the peeling unit in the transport direction for transporting the curved multilayer laminate, which transports and supplies the curved multilayer laminate to the peeling unit, and a second transport unit located downstream of the peeling unit in the transport direction, which receives and transports the curved substrate from the peeling unit after the first and second films have been peeled off from the curved multilayer laminate in the peeling unit. The peeling section has a first peeling section located on the curved concave side in a direction perpendicular to the transport direction and for peeling the first film from the curved multilayer laminate, and a second peeling section located on the curved convex side in a direction perpendicular to the transport direction and for peeling the second film from the curved multilayer laminate. The first peeling section comprises a first unwinding roller located upstream in the conveying direction and around which a first adhesive sheet having adhesive properties is wound; a first winding roller located downstream in the conveying direction and winding up the first adhesive sheet; and a first rotating roller located between the first unwinding roller and the first winding roller in the conveying direction, in which the first adhesive sheet is wrapped around and rotated while in contact with the first adhesive sheet in the longitudinal direction. The second peeling section comprises a second unwinding roller located upstream in the conveying direction, around which a second adhesive sheet having adhesive properties is wound; a second winding roller located downstream in the conveying direction for winding up the second adhesive sheet; and a second rotating roller located between the second unwinding roller and the second winding roller in the conveying direction, in which the second adhesive sheet is wrapped around and rotated while in contact with the middle of the second adhesive sheet in its longitudinal direction. The first peeling section further includes a first moving means for moving the first rotating roller in the orthogonal direction, The first rotating roller is configured to be movable along the orthogonal direction by the operation of the first moving means, and is positioned at a clamping distance such that the first rotating roller and the second rotating roller can clamp the curved multilayer laminate when the curved multilayer laminate is supplied from the first conveying unit to the peeling unit, and is configured such that the first film is peeled off the curved multilayer laminate by the first adhesive sheet and the second film is peeled off the curved multilayer laminate by the second adhesive sheet. The second peeling part further includes second moving means for independently moving the second rotating roller in the conveying direction and the orthogonal direction. The second rotating roller is configured to be independently movable along the conveying direction and the orthogonal direction by the operation of the second moving means. The center axis of the second rotating roller along the orthogonal direction moves continuously from a first position where it is located on the downstream side in the conveying direction of the center axis of the first rotating roller along the orthogonal direction to a second position where the center axis of the second rotating roller along the orthogonal direction and the center axis of the first rotating roller along the orthogonal direction overlap in the conveying direction, and then to a third position where the center axis of the second rotating roller along the orthogonal direction is located on the upstream side in the conveying direction of the center axis of the first rotating roller along the orthogonal direction. Characterized by Film peeling device.

[0014] ( 5 ) Prior to the supply of the curved multilayer laminate from the first conveying part to the peeling part, The separation distance between the first rotating roller and the second rotating roller is set to the magnitude of the clamping distance. While the second rotating roller moves from the first position to the second position by the operation of the second moving means, the first rotating roller and the second rotating roller are respectively moved by the operation of the first moving means and the second moving means. From the first peeling portion side to the second peeling portion sideIt moves along the aforementioned orthogonal direction, and then, While the second rotating roller moves from the second position to the third position due to the operation of the second moving means, the first rotating roller and the second rotating roller move, respectively, due to the operation of the first moving means and the second moving means. From the second peeling portion side to the first peeling portion side Move along the aforementioned orthogonal direction, As a result, when the curved multilayer laminate is sandwiched between the first rotating roller and the second rotating roller, the separation distance is configured to maintain the sandwiching distance. 4 A film peeling device as described above.

[0015] ( 6 ) When the curved multilayer laminate is sandwiched between the first rotating roller and the second rotating roller, the straight line connecting one end of the curved multilayer laminate in the conveying direction and the other end is parallel to the conveying direction. 5 A film peeling device as described above.

[0016] ( 7 A film peeling apparatus used to obtain a curved substrate by peeling off the first film from a curved multilayer laminate having a curved substrate with one side being a curved concave surface and the other side being a curved convex surface, the laminate having a first film attached to the curved concave surface, The system comprises a transport unit for transporting the curved multilayer laminate and the curved substrate, and a peeling unit for peeling the first film from the curved multilayer laminate. The transport unit comprises a first transport unit located upstream of the peeling unit in the transport direction for transporting the curved multilayer laminate, which transports and supplies the curved multilayer laminate to the peeling unit, and a second transport unit located downstream of the peeling unit in the transport direction, which receives and transports the curved substrate from the peeling unit after the first film has been peeled off from the curved multilayer laminate in the peeling unit. The peeling portion is located on the curved concave side in a direction perpendicular to the transport direction and has a first peeling portion that peels the first film from the curved multilayer laminate. The first peeling section comprises a first unwinding roller located upstream in the conveying direction and around which a first adhesive sheet having adhesive properties is wound; a first winding roller located downstream in the conveying direction and winding up the first adhesive sheet; a first rotating roller located between the first unwinding roller and the first winding roller in the conveying direction, in which the first adhesive sheet is wrapped around and rotated with contact to a portion of the sheet in its longitudinal direction; a second rotating roller located on the curved convex side perpendicular to the first rotating roller; and a first moving means for moving the first rotating roller in the perpendicular direction. The film peeling apparatus is characterized in that the first rotating roller is configured to be movable along the orthogonal direction by the operation of the first moving means, and is positioned at a position where the first rotating roller and the second rotating roller can grip the curved multilayer laminate when it is supplied from the first transport unit to the peeling unit, and the curved multilayer laminate is fed to the second transport unit side by this gripping and the rotation of the first rotating roller and the second rotating roller, and the first film is peeled off from the curved multilayer laminate by the first adhesive sheet.

[0017] ( 8 A film peeling apparatus used to obtain a curved substrate by peeling off the second film from a curved multilayer laminate having a curved substrate with one side being a curved concave surface and the other side being a curved convex surface, the laminate having a second film attached to the curved convex surface, The system comprises a transport unit for transporting the curved multilayer laminate and the curved substrate, and a peeling unit for peeling the second film from the curved multilayer laminate. The transport unit comprises a first transport unit located upstream of the peeling unit in the transport direction for transporting the curved multilayer laminate, which transports and supplies the curved multilayer laminate to the peeling unit, and a second transport unit located downstream of the peeling unit in the transport direction, which receives and transports the curved substrate from the peeling unit after the second film has been peeled off from the curved multilayer laminate in the peeling unit. The peeling portion is located on the curved convex side in a direction perpendicular to the transport direction and has a second peeling portion that peels the second film from the curved multilayer laminate. The second peeling section comprises a second unwinding roller located upstream in the conveying direction and around which a second adhesive sheet having adhesive properties is wound; a second winding roller located downstream in the conveying direction and winding up the second adhesive sheet; a second rotating roller located between the second unwinding roller and the second winding roller in the conveying direction, in which the second adhesive sheet is in contact with the second adhesive sheet in its longitudinal direction and rotates while being wrapped around it; a first rotating roller located on the curved concave side perpendicular to the second rotating roller; and a first moving means for moving the first rotating roller in the perpendicular direction. The film peeling apparatus is characterized in that the first rotating roller is configured to be movable along the orthogonal direction by the operation of the first moving means, and is positioned at a position where the first rotating roller and the second rotating roller can grip the curved multilayer laminate when it is supplied from the first transport unit to the peeling unit, and the curved multilayer laminate is fed to the second transport unit side by this gripping and the rotation of the first and second rotating rollers, and the second film is peeled off from the curved multilayer laminate by the second adhesive sheet. [Effects of the Invention]

[0018] According to the present invention, even if the substrate to which the film is attached is a curved substrate, the film can be smoothly peeled off the curved substrate. [Brief explanation of the drawing]

[0019] [Figure 1] This is a schematic diagram illustrating a method for manufacturing a lens equipped with a curved optical sheet, using the film peeling apparatus of the present invention. [Figure 2] This is a side view of a first embodiment of the film peeling apparatus of the present invention. [Figure 3]Figure 2 shows an example of a curved multilayer laminate from which the protective film is peeled off using the film peeling device shown in Figure 2 ((a): plan view, (b): side view). [Figure 4] This is a side view illustrating a method for peeling off a protective film using the film peeling device shown in Figure 2. [Figure 5] This is a side view illustrating a method for peeling off a protective film using the film peeling device shown in Figure 2. [Figure 6] This is a side view of a second embodiment of the film peeling apparatus of the present invention. [Figure 7] This is a side view illustrating a method for peeling off a protective film using the film peeling device shown in Figure 6. [Figure 8] This is a side view illustrating a method for peeling off a protective film using the film peeling device shown in Figure 6. [Modes for carrying out the invention]

[0020] The film peeling apparatus of the present invention will be described in detail below based on preferred embodiments shown in the accompanying drawings.

[0021] The film peeling apparatus of the present invention is used to obtain a curved substrate by peeling a film from a multilayer laminate having a curved substrate with one side being a curved concave surface and the other side being a curved convex surface, and a film attached to the curved substrate.

[0022] This film peeling device is used, for example, in a lens manufacturing method in which a lens (eyeglass lens) is formed by peeling a film from a curved optical sheet, which is obtained by curving an optical sheet that is a flat substrate, and then forming a resin layer on the concave surface of the curved optical sheet.

[0023] Therefore, before describing the film peeling apparatus of the present invention, we will now describe a method for manufacturing lenses in which the film peeling apparatus of the present invention is used.

[0024] <Lens manufacturing method> Figure 1 is a schematic diagram illustrating a method for manufacturing a lens equipped with a curved optical sheet, using the film peeling apparatus of the present invention. For the sake of explanation, the upper part of Figure 1 will be referred to as "upper" and the lower part as "lower" below.

[0025] The following details each step in the manufacturing process of the lens 17 equipped with the curved optical sheet 10. [1] First, an optical sheet 11 having an overall flat shape is prepared, and then protective films 12 (masking tape) are attached to both sides of the optical sheet 11 to obtain a multilayer laminate 16 in which protective films 12 are attached to both sides of the optical sheet 11 (see Figure 1(a)).

[0026] [2] Next, as shown in Figure 1(b), the prepared multilayer laminate 16 is divided into individual pieces that form a circular shape in plan view by punching out the optical sheet 11 in the thickness direction with the protective film 12 attached to both sides of the optical sheet 11.

[0027] [3] Next, as shown in Figure 1(c), the circular, i.e., individualized multilayer laminate 16 is subjected to a heat bending process under heating to transform the multilayer laminate 16 into a curved multilayer laminate 15, in which one side is a curved concave surface and the other side is a curved convex surface. As a result, the flat optical sheet 11 is transformed into a curved optical sheet 10 with protective films 12 attached to both sides. This heat bending process is typically carried out by press forming or vacuum forming.

[0028] [4] Next, the protective film 12 is peeled off the heat-bent curved optical sheet 10.

[0029] [5] Next, as shown in Figure 1(d), the curved optical sheet 10 is adsorbed onto a mold 18 having a curved concave surface, such that the curved concave surface of the mold 18 and the curved convex surface of the curved optical sheet 10 are in contact. Then, for example, using an insert injection molding method, a resin layer 14, mainly composed of resin material, is injection molded onto the curved concave surface of the curved optical sheet 10. That is, the constituent material of the molten resin layer 14 is cooled and solidified while in contact with the curved concave surface of the curved optical sheet 10, thereby molding the resin layer 14 in direct contact with the curved concave surface of the curved optical sheet 10 without the use of an adhesive layer or the like. This produces a lens 17 comprising a heat-bent curved optical sheet 10 and a resin layer 14.

[0030] In the method for manufacturing a lens 17 equipped with a curved optical sheet 10 as described above, the film peeling device 100 of the present invention is used to peel the protective film 12 from the curved optical sheet 10 in step [4]. Hereinafter, each embodiment of this film peeling device 100 will be described in detail.

[0031] <Film peeling device> <<First Embodiment>> Figure 2 is a side view of a first embodiment of the film peeling apparatus of the present invention. For the sake of explanation, in the following, the upper side of Figure 2 will be referred to as "up" or "upwards," the lower side as "down" or "downwards," the left side as "left," and the right side as "right."

[0032] The film peeling device 100 includes a transport unit 20 for transporting the curved multilayer laminate 15 and the curved optical sheet 10, and a peeling unit 50 for peeling the protective film 12 from the curved multilayer laminate 15.

[0033] Furthermore, in this film peeling apparatus 100, the transport unit 20 includes a first transport unit 30 that transports and supplies the curved multilayer laminate 15 to the peeling unit 50, and a second transport unit 40 that receives and transports the curved optical sheet 10, from which the protective film 12 has been peeled off the curved multilayer laminate 15 in the peeling unit 50.

[0034] The first transport unit 30 is located upstream (to the left) of the peeling unit 50 in the transport direction for transporting the curved multilayer laminate 15, and is for transporting (supplying) the curved multilayer laminate 15 to the peeling unit 50.

[0035] As shown in Figure 2, the first conveying unit 30 includes a belt 33 made of an endless belt, tensioners 31 and 32 (tension rollers) that contact the belt 33 midway along its longitudinal direction and rotate while being wrapped around it, and a guide member 34 that contacts the belt 33 midway along its longitudinal direction and is wrapped around it.

[0036] The tensioners 31 and 32 are rotatable rollers, each having a cylindrical outer shape. The belt 33 is an endless belt, and is wrapped around the tensioners 31 and 32 such that its longitudinal length contacts the belt 33, applying tension to it. This allows the belt 33 to be fed out as the tensioners 31 and 32 rotate.

[0037] The tensioners 31 and 32 are each made of a metal material such as stainless steel.

[0038] Furthermore, the tensioners 31 and 32 have their pivot axes (central axes) facing the same direction and are spaced apart from each other. In addition, the tensioners 31 and 32 are rotatably supported, for example, by a frame (not shown) that supports the entire film peeling device 100.

[0039] A motor (not shown) is connected to at least one of these tensioners 31 and 32. The operation of this motor causes the tensioner 31 or 32 to which the motor is connected to rotate, resulting in the belt 33 being fed out. This moves the curved multilayer laminate 15 placed on the belt 33 downstream in the conveying direction, and ultimately it is conveyed (supplied) to the peeling section 50.

[0040] Furthermore, the guide member 34 has an overall flat shape with a gradually decreasing thickness towards its tip, and its tip is positioned to correspond to the first rotating roller 67 provided in the first peeling section 60, which will be described later. This allows for smooth transport of the curved multilayer laminate 15, which is placed on the belt 33, to the peeling section 50.

[0041] Furthermore, by changing the magnitude of the voltage applied to the motor, the feed speed of the belt 33, and consequently the transport speed of the curved multilayer laminate 15, can be set to a desired value.

[0042] The second transport unit 40 is located downstream (to the right) of the peeling unit 50 in the transport direction, and is for receiving and transporting the curved optical sheet 10 from the peeling unit 50, from which the protective film 12 has been peeled off the curved multilayer laminate 15.

[0043] As shown in Figure 2, the second conveying unit 40 includes a belt 43 made of an endless belt, tensioners (tension rollers) 41 and 42 that contact the belt 43 midway along its longitudinal direction and rotate while being wrapped around it, and a lead member 44 that contacts the belt 43 midway along its longitudinal direction and is wrapped around it.

[0044] The tensioners 41 and 42 are rotatable rollers, each with a cylindrical outer shape. The belt 43 is an endless belt, and is wrapped around the tensioners 41 and 42 such that its longitudinal length contacts them, applying tension to the belt 43. This allows the belt 43 to be fed out as the tensioners 41 and 42 rotate.

[0045] The tensioners 41 and 42 are each made of a metal material such as stainless steel.

[0046] Furthermore, the tensioners 41 and 42 have their pivot axes (central axes) facing the same direction and are spaced apart from each other. In addition, the tensioners 41 and 42 are rotatably supported, for example, by a frame (not shown) that supports the entire film peeling device 100.

[0047] A motor (not shown) is connected to at least one of these tensioners 41 and 42. The operation of this motor causes the tensioners 41 and 42 to which the motor is connected to rotate, and as a result, the belt 43 is fed out. In this way, the curved optical sheet 10, from which the protective film 12 has been peeled off the curved multilayer laminate 15 in the peeling section 50, is received by the belt 43 and then transported downstream in the transport direction.

[0048] Furthermore, the lead member 44 has an overall flat shape, with its thickness gradually decreasing towards the tip, and its tip is positioned to correspond to the first rotating roller 67 provided in the first peeling section 60, which will be described later. This allows for smooth transfer of the curved optical sheet 10, from which the protective film 12 has been peeled, from the peeling section 50 onto the belt 43.

[0049] Furthermore, by changing the magnitude of the voltage applied to the motor, the feed speed of the belt 43, and consequently the transport speed of the curved multilayer laminate 15, can be set to a desired value.

[0050] Furthermore, in this film peeling device 100, the peeling section 50 includes a first peeling section 60 for peeling the protective film 12 (first film) from the curved concave side (bottom side) of the curved multilayer laminate 15, and a second peeling section 70 for peeling the protective film 12 (second film) from the curved convex side (top side) of the curved multilayer laminate 15.

[0051] The first peeling section 60 is located on the curved concave side (bottom side) in an orthogonal direction (up and down direction) perpendicular to the transport direction (left and right direction), and is for peeling the protective film 12 (first film) attached to the curved concave surface (bottom surface) of the curved optical sheet 10 from the curved multilayer laminate 15.

[0052] As shown in Figure 2, the first peeling section 60 includes a first unwinding roller 61 located on the upstream side (left side) in the conveying direction, around which a first adhesive sheet 80 having adhesive properties is wound; a first winding roller 62 located on the downstream side (right side) in the conveying direction, which winds up (winds) the first adhesive sheet 80; a first rotating roller 67 located between the first unwinding roller 61 and the first winding roller 62 in the conveying direction, which contacts the first adhesive sheet 80 midway along its longitudinal direction and rotates while being wrapped around it; tensioners (tension rollers) 63, 64, 65, and 66 positioned between the first unwinding roller 61 and the first winding roller 62; and a first air cylinder 68 that rotatably supports the first rotating roller 67.

[0053] Each roller is made of a metal material, such as stainless steel. Furthermore, the rotation axes (central axes) of these rollers are aligned in the same direction and spaced apart from one another. In addition, each roller, except for the first rotating roller 67, is rotatably supported by a frame (not shown) that supports the entire film peeling device 100.

[0054] The first unwinding roller 61 has a cylindrical shape and is located on the upstream side in the conveying direction of the first adhesive sheet 80. The first adhesive sheet 80 is wound in a roll shape around it, and this roller is used to feed the first adhesive sheet 80 in the conveying direction.

[0055] Each of the tensioners 63 to 66 has a cylindrical shape and is positioned between the first unwinding roller 61 and the first winding roller 62. The tensioners make contact with the first adhesive sheet 80 along its longitudinal direction and rotate while being wrapped around it. This allows the first adhesive sheet 80 to be conveyed while tension is applied to it and the direction in which it is fed out is changed. At least one of the tensioners 63 to 66 may be omitted depending on the position of the first unwinding roller 61, the first winding roller 62, and the first rotating roller 67.

[0056] The first rotating roller 67 is positioned between the first unwinding roller 61 and the first winding roller 62, more specifically between the tensioner 65 and the tensioner 66, and rotates while being wrapped around the first adhesive sheet 80, with the middle of the sheet in the longitudinal direction in contact with the roller. As the first adhesive sheet 80 is wrapped around the first rotating roller 67 and rotates, it comes into contact with the curved multilayer laminate 15 via the first adhesive sheet 80, transferring the protective film 12 located on the curved concave side to the first adhesive sheet 80, thereby peeling the protective film 12 from the curved multilayer laminate 15.

[0057] The first rotating roller 67 may have a cylindrical outer shape, i.e., a straight roll, but it is preferable that it be a crown roll with a large diameter at the center and a diameter that gradually decreases towards the end. This ensures that the first adhesive sheet 80 is reliably attached to the protective film 12 located on the curved concave side of the curved multilayer laminate 15 in the second step described later. As a result, the protective film 12 can be peeled off the curved optical sheet 10 more smoothly.

[0058] Furthermore, for the first rotating roller 67, it is preferable that the relational expression Tb / Tr between its width, that is, the length Tr in the vertical direction (TD) orthogonal to the conveyance direction (flow direction (MD)), and the length Tb along the TD of the curved multilayer laminate 15 satisfies the relationship 2.0 < Tb / Tr < 7.0, and more preferably satisfies the relationship 3.0 < Tb / Tr < 6.0. Since the curved multilayer laminate 15 is curved not only along the flow direction (MD) but also along the vertical direction (TD), by using a first rotating roller 67 for which the relational expression Tb / Tr is set within the above range, the protective film 12 can be peeled off from the curved optical sheet 10 more smoothly. Such a relationship can be applied to the first rotating roller 67 corresponding to the curved concave surface of the curved multilayer laminate 15 to peel off the protective film 12 from the curved optical sheet 10 more smoothly, but it can also be applied to the second rotating roller 77 corresponding to the curved convex surface of the curved multilayer laminate 15.

[0059] The first air cylinder 68 is located on the curved concave surface side (lower surface side) in the orthogonal direction with respect to the first rotating roller 67, supports the first rotating roller 67 so as to be rotatable, and constitutes moving means (first moving means) for moving the first rotating roller 67 along the orthogonal direction by its operation. Thereby, by operating the first air cylinder 68, it becomes possible to move the first rotating roller 67 along the orthogonal direction. Therefore, in the orthogonal direction, the first rotating roller 67 can be arranged at a desired position.

[0060] Furthermore, the first winding roller 62 has a columnar outer shape and is located on the most downstream side in the conveyance direction of the first adhesive sheet 80, and is a roller for winding the first adhesive sheet 80 fed out from the upstream side in the conveyance direction. A motor (not shown) is connected to the first winding roller 62, and the first adhesive sheet 80 is conveyed by the operation of this motor. Also, by changing the magnitude of the voltage applied to the motor, the conveyance speed of the first adhesive sheet 80 can be changed.

[0061] The second peeling section 70 is located on the curved convex side (upper side) in the orthogonal direction (upper and lower direction), and is intended to peel the protective film 12 (second film) attached to the curved convex surface (upper surface) of the curved optical sheet 10 from the curved multilayer laminate 15.

[0062] As shown in Figure 2, the second peeling section 70 includes a second unwinding roller 71 located on the upstream side (left side) in the conveying direction, around which a second adhesive sheet 90 having adhesive properties is wound; a second winding roller 72 located on the downstream side (right side) in the conveying direction, which winds up (winds) the second adhesive sheet 90; a second rotating roller 77 located between the second unwinding roller 71 and the second winding roller 72 in the conveying direction, which contacts the second adhesive sheet 90 midway along its longitudinal direction and rotates while being wrapped around it; tensioners (tension rollers) 73, 74, 75, and 76 positioned between the second unwinding roller 71 and the second winding roller 72; and a second air cylinder 78 that rotatably supports the second rotating roller 77.

[0063] Each roller is made of a metal material, such as stainless steel. Furthermore, the rotation axes (central axes) of these rollers are aligned in the same direction and spaced apart from one another. In addition, each roller, except for the second rotating roller 77, is rotatably supported by a frame (not shown) that supports the entire film peeling device 100.

[0064] The second unwinding roller 71 has a cylindrical shape and is located on the upstream side in the transport direction of the second adhesive sheet 90. The second adhesive sheet 90 is wound in a roll shape around this roller, and the roller is used to feed out the second adhesive sheet 90 in the transport direction.

[0065] Each of the tensioners 73 to 76 has a cylindrical shape and is positioned between the second unwinding roller 71 and the second winding roller 72. The second adhesive sheet 90 is rotated while being wrapped around the tensioners, with the middle of the sheet in the longitudinal direction in contact with the tensioners. This allows the second adhesive sheet 90 to be conveyed while tension is applied to it and the direction in which it is fed out is changed. At least one of the tensioners 73 to 76 may be omitted depending on the position of the second unwinding roller 71, the second winding roller 72, and the second rotating roller 77.

[0066] The second rotating roller 77 is positioned between the second unwinding roller 71 and the second winding roller 72, more specifically between the tensioner 75 and the tensioner 76, and rotates while the second adhesive sheet 90 is wrapped around it, with the middle of the sheet in the longitudinal direction in contact with the roller. As the second adhesive sheet 90 is wrapped around the second rotating roller 77 and rotates, it comes into contact with the curved multilayer laminate 15 via the second adhesive sheet 90, transferring the protective film 12 located on the curved convex side to the second adhesive sheet 90, thereby peeling the protective film 12 from the curved multilayer laminate 15.

[0067] The second rotating roller 77 may have a cylindrical outer shape, i.e., it may be a straight roll, but it is preferable that it be a crown roll with a large diameter at the center and a diameter that gradually decreases towards the end. This ensures that in the second step described later, the second adhesive sheet 90 can be reliably attached to the protective film 12 located on the curved convex side of the curved multilayer laminate 15. As a result, the protective film 12 can be peeled off the curved optical sheet 10 more smoothly.

[0068] The second air cylinder 78 is positioned on the curved convex side (upper side) of the second rotating roller 77 in the direction perpendicular to it (vertical direction), and supports the second rotating roller 77 so that it can rotate. It also constitutes a moving means (second moving means) that moves the second rotating roller 77 along the perpendicular direction when the second air cylinder 78 is operated. As a result, the second rotating roller 77 can be moved along the perpendicular direction by operating the second air cylinder 78. Therefore, the second rotating roller 77 can be positioned at a desired location in the perpendicular direction.

[0069] Furthermore, the second winding roller 72 has a cylindrical shape and is located at the downstream end in the transport direction of the second adhesive sheet 90. It is a roller that winds up the second adhesive sheet 90 that has been fed out from the upstream side in the transport direction. A motor (not shown) is connected to this second winding roller 72, and the second adhesive sheet 90 is transported by the operation of this motor. In addition, the transport speed of the second adhesive sheet 90 can be changed by changing the magnitude of the voltage applied to the motor.

[0070] Furthermore, in the first peeling section 60 and the second peeling section 70 having the configuration described above, the first rotating roller 67 and the second rotating roller 77 are positioned such that their central axes, along the orthogonal direction, overlap in the conveying direction. This allows the first rotating roller 67 and the second rotating roller 77 to be moved orthogonally (vertically) along the same central axis by the operation of the first air cylinder 68 and the second air cylinder 78, respectively.

[0071] Using the film peeling apparatus 100 described above, a curved optical sheet 10 can be obtained from which the protective film 12 has been peeled off the curved multilayer laminate 15.

[0072] The following describes a method for peeling the protective film 12 from the curved multilayer laminate 15 using a film peeling device 100.

[0073] (Method for removing protective film using a film removal device) Figure 3 shows an example of a curved multilayer laminate from which a protective film is peeled off using the film peeling device shown in Figure 2 ((a): plan view, (b): side view). Figures 4 and 5 are side views illustrating the peeling method for removing the protective film using the film peeling device shown in Figure 2. For the sake of explanation, in the following, the front side of the paper in Figure 3(a), and the upper side in Figures 3(b), 4, and 5 will be referred to as "top" or "upper," the back side of the paper in Figure 3(a), and the lower side in Figures 3(b), 4, and 5 will be referred to as "bottom" or "downward," the left side in Figures 3 to 5 will be referred to as "left," and the right side in Figures 3 to 5 will be referred to as "right."

[0074] In the following description, the curved optical sheet 10, protected on both sides by a protective film 12 in the curved multilayer laminate 15, is not particularly limited as long as it is a curved resin substrate with one side being a curved concave surface and the other side being a curved convex surface. However, as shown in Figure 3, its planar shape is approximately circular, or more specifically, two opposing short sides form a straight line and two opposing long sides form a circular arc. As an example, the curved multilayer laminate 15 is positioned on the belt 33 of the first transport unit 30 of the film peeling device 100 with the curved concave surface facing the belt 33, and the straight short sides are aligned with the transport direction of the belt 33, and the protective film 12 is peeled from the curved multilayer laminate 15.

[0075] In this embodiment, the method for peeling a protective film 12 using this film peeling device 100 includes: a first step of transporting and supplying a curved multilayer laminate 15, which is placed on a belt 33 provided by a first transport unit 30, to a peeling unit 50; a second step of obtaining a curved optical sheet 10 by peeling the protective film 12 from the curved multilayer laminate 15 in the peeling unit 50, which is fed to the second transport unit 40 side while gripping the curved multilayer laminate 15 transported from the first transport unit 30 between a first rotating roller 67 and a second rotating roller 77; and a third step of receiving and transporting the curved optical sheet 10 obtained in the peeling unit 50 by placing it on a belt 43 provided by a second transport unit 40.

[0076] The following describes each step of the method for peeling the protective film 12 using the film peeling device 100.

[0077] (1st step) First, the curved multilayer laminate 15, which is placed on the belt 33 provided by the first conveying unit 30, is conveyed and supplied to the peeling unit 50.

[0078] (1A-1) First, the curved multilayer laminate 15 is placed on the belt 33 provided by the first conveying unit 30. At this time, the curved concave surface of the curved multilayer laminate 15 is positioned on the belt 33, and the shorter straight side of the curved multilayer laminate 15 is aligned with the conveying direction of the belt 33 (see Figure 3).

[0079] Separately, the first adhesive sheet 80 is unwound from the first unwinding roller 61, which has the first adhesive sheet 80 pre-wound around it, so that part of it contacts the tensioners 63-66 and the first rotating roller 67 along its unwinding direction, and its leading end is attached to the first take-up roller 62. Furthermore, the second adhesive sheet 90 is unwound from the second unwinding roller 71, which has the second adhesive sheet 90 pre-wound around it, so that part of it contacts the tensioners 73-76 and the second rotating roller 77 along its unwinding direction, and its leading end is attached to the second take-up roller 72.

[0080] Then, the first conveying unit 30, the first peeling unit 60, and the second peeling unit 70, through the operation of their respective motors, convey the curved multilayer laminate 15 on the belt 33 in the conveying direction, and feed the first adhesive sheet 80 and the second adhesive sheet 90 to the first winding roller 62 and the second winding roller 72, respectively, while wrapping them around the first rotating roller 67 and the second rotating roller 77.

[0081] (1A-2) Next, the curved multilayer laminate 15 is transported downstream in the transport direction on the belt 33, causing its tip to protrude from the tip of the first transport section 30 on the transport direction side. Then, as shown in Figure 4(a), the curved multilayer laminate 15 is supplied from the first transport section 30 to the peeling section 50 by bringing the tip of the curved multilayer laminate 15 into contact with the first adhesive sheet 80 between the tensioner 65 and the first rotating roller 67.

[0082] Prior to the tip of the curved multilayer laminate 15 making contact with the first adhesive sheet 80, the first rotating roller 67 is positioned with its top facing the curved convex side (upper side) in the perpendicular direction (up and down direction) to the guide member 34 of the first conveying unit 30, as shown in Figure 4(a). Furthermore, the distance between the first rotating roller 67 and the second rotating roller 77 is set to be greater than the clamping distance between the first rotating roller 67 and the second rotating roller 77 that grips the curved multilayer laminate 15.

[0083] Then, as described above, when the curved multilayer laminate 15 comes into contact with the first adhesive sheet 80, the first air cylinder 68 is activated to move the first rotating roller 67 along the direction perpendicular to the curved convex side (upper side). This allows the first rotating roller 67 to be moved to a position where the distance between the first rotating roller 67 and the second rotating roller 77 is equal to the clamping distance when supplying the curved multilayer laminate 15 between the first rotating roller 67 and the second rotating roller 77 in the subsequent process (2A-2).

[0084] Through these processes (1A-1) and (1A-2), the curved multilayer laminate 15 is conveyed and supplied to the peeling section 50.

[0085] (2nd process) Next, in the peeling section 50, the curved multilayer laminate 15 conveyed from the first conveying section 30 is gripped between the first rotating roller 67 and the second rotating roller 77 and sent to the second conveying section 40, thereby peeling off the protective film 12 from the curved multilayer laminate 15 to obtain the curved optical sheet 10.

[0086] (2A-1) First, the curved multilayer laminate 15, which has been bonded to the first adhesive sheet 80 by the tip of the curved multilayer laminate 15 coming into contact with the first adhesive sheet 80, is moved by the feeding of the first adhesive sheet 80 to a position in the transport direction that corresponds to the first rotating roller 67.

[0087] At this time, as described in step (1A-2) above, the operation of the first air cylinder 68 causes the first rotating roller 67 to move along the direction perpendicular to the curved convex side (upward side).

[0088] Therefore, in this process (2A-1), the curved multilayer laminate 15 moves both downstream in the conveying direction and towards the curved convex side (upper side) in the orthogonal direction as the first adhesive sheet 80 is fed out and the first rotating roller 67 moves.

[0089] (2A-2) Next, on the downstream side in the conveying direction (left-right direction), as shown in Figure 4(b), when the leading edge of the curved multilayer laminate 15 moves (reaches) to a position corresponding to the first rotating roller 67, the leading edge of the curved multilayer laminate 15 is gripped by the first rotating roller 67 and the second rotating roller 77.

[0090] Here, when the leading edge of the curved multilayer laminate 15 reaches the position corresponding to the first rotating roller 67, the movement of the first rotating roller 67 toward the curved convex side (upward side) causes the distance between the first rotating roller 67 and the second rotating roller 77 to be set to the size of the clamping distance at which the curved multilayer laminate 15 is clamped between the first rotating roller 67 and the second rotating roller 77. Therefore, the leading edge of the curved multilayer laminate 15 can be clamped between the first rotating roller 67 and the second rotating roller 77 almost simultaneously with the leading edge of the curved multilayer laminate 15 reaching the position corresponding to the first rotating roller 67.

[0091] Furthermore, the clamping distance is set to a size that allows the first adhesive sheet 80, the curved multilayer laminate 15, and the second adhesive sheet 90 to be compressed between the first rotating roller 67 and the second rotating roller 77. As a result of this compression, the protective film 12 located on the curved concave side of the curved multilayer laminate 15 can be attached to the first adhesive sheet 80, and the protective film 12 located on the curved convex side of the curved multilayer laminate 15 can be attached to the second adhesive sheet 90. In other words, the first rotating roller 67 and the second rotating roller 77 also function as compression rollers, respectively, by compressing the first adhesive sheet 80, the curved multilayer laminate 15, and the second adhesive sheet 90, thereby attaching the protective film 12 located on the curved concave side of the curved multilayer laminate 15 to the first adhesive sheet 80, and further attaching the protective film 12 located on the curved convex side of the curved multilayer laminate 15 to the second adhesive sheet 90.

[0092] Furthermore, when the leading edge of the curved multilayer laminate 15 is clamped between the first rotating roller 67 and the second rotating roller 77 at this clamping distance, in this embodiment, the positions of the first rotating roller 67 and the second rotating roller 77 in the orthogonal direction (vertical direction) are set so that the tangent to the leading edge of the curved multilayer laminate 15 is approximately parallel to the conveying direction. As a result, the leading edge of the curved multilayer laminate 15 is clamped between the first rotating roller 67 and the second rotating roller 77, which are positioned so that the central axis of the first rotating roller 67 along the orthogonal direction and the central axis of the second rotating roller 77 along the orthogonal direction overlap in the conveying direction, while maintaining a state in which the leading edge of the curved multilayer laminate 15 is approximately parallel to both the first rotating roller 67 and the second rotating roller 77. Therefore, by clamping the protective film 12 located on the curved concave side of the curved multilayer laminate 15 with the first adhesive sheet 80, and furthermore, the protective film 12 located on the curved convex side of the curved multilayer laminate 15 can be reliably attached with the second adhesive sheet 90. In other words, by attaching the first adhesive sheet 80 to the protective film 12 located on the curved concave side and the second adhesive sheet 90 to the protective film 12 located on the curved convex side at the leading edge of the curved multilayer laminate 15, a starting point for peeling both protective films 12 from the curved optical sheet 10 can be reliably formed. As a result, in the next step (2A-3), both protective films 12 can be reliably peeled off from the starting point at the leading edge of the curved multilayer laminate 15, so that even if the curved optical sheet 10 is a curved substrate having a curved concave surface and a curved convex surface, the protective films 12 can be smoothly peeled off from the curved optical sheet 10.

[0093] In this embodiment, prior to the contact of the leading edge of the curved multilayer laminate 15 with the first adhesive sheet 80, the distance between the first rotating roller 67 and the second rotating roller 77 is set to be greater than the clamping distance. After the contact, the first rotating roller 67 is moved along a direction perpendicular to the curved convex side (upward side) so that when the curved multilayer laminate 15 is supplied between the first rotating roller 67 and the second rotating roller 77, the first rotating roller 67 is moved to a position where the distance between the first rotating roller 67 and the second rotating roller 77 is equal to the clamping distance. However, the operation of the first rotating roller 67 and the second rotating roller 77 until the curved multilayer laminate 15 is supplied between the first rotating roller 67 and the second rotating roller 77 is not limited to the above case, and can also be done as follows, for example. In other words, prior to the contact of the leading edge of the curved multilayer laminate 15 with the first adhesive sheet 80, the distance between the first rotating roller 67 and the second rotating roller 77 may be set to the same size as the clamping distance, and after the contact, the first rotating roller 67 and the second rotating roller 77 may be moved along a direction perpendicular to the curved convex side (upward side) so that the distance between them maintains the clamping distance even when the curved multilayer laminate 15 is supplied between the first rotating roller 67 and the second rotating roller 77.

[0094] (2A-3) Next, the leading edge of the curved multilayer laminate 15, which is held between the first rotating roller 67 and the second rotating roller 77, is fed downstream in the conveying direction (left-right direction) by the rotation of the first rotating roller 67 and the second rotating roller 77, as shown in Figure 3(c). That is, the curved multilayer laminate 15, which is held between the first rotating roller 67 and the second rotating roller 77, is fed continuously along the conveying direction from the leading edge to the base end.

[0095] Here, the first rotating roller 67 rotates in conjunction with the feeding of the first adhesive sheet 80 wrapped around the first rotating roller 67, and the second rotating roller 77 rotates in conjunction with the feeding of the second adhesive sheet 90 wrapped around the second rotating roller 77. In step (2A-2), the protective film 12 on the curved concave side is attached to the first adhesive sheet 80 at a position corresponding to the leading edge of the curved multilayer laminate 15, and the protective film 12 on the curved convex side is attached to the second adhesive sheet 90. Therefore, as the first adhesive sheet 80 and the second adhesive sheet 90 are fed out, the protective films 12 on both sides are peeled off from the curved multilayer laminate 15 at a position corresponding to the leading edge of the curved multilayer laminate 15.

[0096] Therefore, by feeding the curved multilayer laminate 15 along the transport direction from the tip to the base, the gripping of the curved multilayer laminate 15 by the first rotating roller 67 and the second rotating roller 77, and the peeling of the protective film 12 by the first adhesive sheet 80 and the second adhesive sheet 90 are continuously performed. In other words, by continuously feeding the curved multilayer laminate 15 from the tip to the base, the peeling of the protective film 12 (first film) on the curved concave side from the curved optical sheet 10 by the first adhesive sheet 80 and the peeling of the protective film 12 (second film) on the curved convex side from the curved optical sheet 10 by the second adhesive sheet 90 can be continuously performed.

[0097] (2A-4) Next, the curved multilayer laminate 15 is fed downstream in the conveying direction by the rotation of the first rotating roller 67 and the second rotating roller 77, as shown in Figure 3(d), until the position where it is gripped by the first rotating roller 67 and the second rotating roller 77 reaches the base end of the curved multilayer laminate 15.

[0098] Here, the continuous feeding of the curved multilayer laminate 15 downstream in the transport direction by the rotation of the first rotating roller 67 and the second rotating roller 77 allows for the continuous peeling of the protective film 12 (first film) from the curved concave side of the curved optical sheet 10 by the first adhesive sheet 80 and the peeling of the protective film 12 (second film) from the curved convex side of the curved optical sheet 10 by the second adhesive sheet 90, as described in step (2A-3).

[0099] Therefore, by continuously feeding the curved multilayer laminate 15 downstream in the transport direction by the rotation of the first rotating roller 67 and the second rotating roller 77 until it reaches the base end of the curved multilayer laminate 15, the peeling of both protective films 12 from the curved optical sheet 10 can be carried out from the front end to the base end of the curved multilayer laminate 15, that is, over the entire surface of the curved multilayer laminate 15. Thus, by feeding the curved multilayer laminate 15 in this way, a curved optical sheet 10 from which the protective films 12 have been peeled off can be obtained.

[0100] By going through these steps (2A-1) to (2A-4), a curved optical sheet 10 can be obtained from which the protective film 12 has been peeled off the curved multilayer laminate 15.

[0101] (3rd step) Next, the curved optical sheet 10 obtained in the peeling section 50 is received and transported from the peeling section 50 by placing it on the belt 43 provided in the second transport section 40.

[0102] (3A-1) First, the leading edge of the curved optical sheet 10 obtained by peeling off the protective film 12 in the peeling section 50 is brought into contact with the belt 43 on the lead member 44 side of the second transport section 40, which is located on the upstream side in the transport direction, as shown in Figure 4(d).

[0103] At this time, the motor of the second transport unit 40 causes the belt 43, which is made of an endless belt, to rotate as it is wrapped around the tensioners 41 and 42 and the lead member 44. Therefore, when the leading edge of the curved optical sheet 10 comes into contact with the belt 43, the leading edge of the curved optical sheet 10 is pulled towards the transport direction side of the second transport unit 40 as the belt 43 moves, and finally the entire curved optical sheet 10 is placed on the belt 43, thereby completing the receiving of the curved optical sheet 10 by the second transport unit 40 from the peeling unit 50. ru.

[0104] When the leading edge of the curved optical sheet 10 contacts the belt 43, the first rotating roller 67 is positioned at a clamping distance between the first rotating roller 67 and the second rotating roller 77, as shown in Figure 5(b). However, in response to the retraction of the curved optical sheet 10 toward the conveying direction of the second conveying unit 40 due to the movement of the belt 43, the first rotating roller 67 may or may not move toward the curved concave side (downward) in the orthogonal direction.

[0105] (3A-2) Next, the curved optical sheet 10 placed on the belt 43 of the second transport unit 40 is transported along the transport direction on the belt 43.

[0106] Then, the method of peeling off the protective film using the film peeling device 100 is completed by picking up the curved optical sheet 10 being transported on the belt 43 using your hand or a picking device.

[0107] Through these processes (3A-1) and (3A-2), the curved optical sheet 10 is received from the peeling section 50 by the second transport section 40, and then transported by the second transport section 40.

[0108] As described above, by going through the first to third steps using the film peeling device 100, a curved optical sheet 10 from which the protective film 12 has been peeled off the curved multilayer laminate 15 can be smoothly obtained.

[0109] Furthermore, in addition to the configuration of the first embodiment described above, the film peeling device 100 can also be configured as the second embodiment shown below to obtain the curved optical sheet 10 from which the protective film 12 has been peeled off.

[0110] <Second Embodiment> Figure 6 is a side view of a second embodiment of the film peeling apparatus of the present invention. For the sake of explanation, in the following, the upper side of Figure 6 will be referred to as "up" or "upwards," the lower side as "down" or "downwards," the left side as "left," and the right side as "right."

[0111] The following description will focus on the differences between the film peeling device 100 of the second embodiment shown in Figure 6 and the film peeling device 100 of the first embodiment shown in Figure 2. Similar aspects will not be explained.

[0112] The film peeling device 100 shown in Figure 6 is the same as the film peeling device 100 shown in Figure 2, except that the configuration of the first peeling section 60 and the second peeling section 70 provided in the peeling section 50 is different.

[0113] In other words, the first peeling unit 60 is equipped with an actuator (not shown) that moves the first air cylinder 68 along both the upstream and downstream sides in the conveying direction. This actuator and the first air cylinder 68 together constitute a moving means (first moving means) that moves independently in a direction perpendicular to the conveying direction. As a result, by operating the first air cylinder 68, it is possible to move the first rotating roller 67 along the perpendicular direction. Therefore, the first rotating roller 67 can be positioned at a desired location in the perpendicular direction. Furthermore, by operating the actuator connected to the first air cylinder 68, it is possible to move the first air cylinder 68 and, consequently, the first rotating roller 67, along the conveying direction, both upstream and downstream. Therefore, the first rotating roller 67 can be positioned at a desired location in the conveying direction.

[0114] Furthermore, the second peeling section 70 is equipped with an actuator (not shown) that moves the second air cylinder 78 along both the upstream and downstream sides in the conveying direction. This actuator and the second air cylinder 78 together constitute a moving means (second moving means) that moves independently in a direction perpendicular to the conveying direction. As a result, by operating the second air cylinder 78, the second rotating roller 77 can be moved along the perpendicular direction. Therefore, the second rotating roller 77 can be positioned at a desired location in the perpendicular direction. Also, by operating the actuator connected to the second air cylinder 78, the second air cylinder 78 and, consequently, the second rotating roller 77 can be moved along the conveying direction, both upstream and downstream. Therefore, the second rotating roller 77 can be positioned at a desired location in the conveying direction.

[0115] Therefore, in this embodiment, by operating the first moving means and the second moving means, the first rotating roller 67 of the first peeling section 60 and the second rotating roller 77 of the second peeling section 70 of the film peeling device 100 are moved independently in orthogonal directions, and as shown in Figure 6, the central axis of the first rotating roller 67 along the orthogonal direction and the central axis of the second rotating roller 77 along the orthogonal direction are positioned so that they do not overlap in the conveying direction.

[0116] Using the film peeling apparatus 100 described above, in this embodiment, by applying the method for peeling the protective film 12 using the film peeling apparatus 100 as shown below, a curved optical sheet 10 can be obtained from which the protective film 12 has been peeled off the curved multilayer laminate 15.

[0117] (Method for removing protective film using a film removal device) Figures 7 and 8 are side views illustrating a method for peeling off a protective film using the film peeling device shown in Figure 6. For the sake of explanation, in the following, the front side of the page in Figure 3(a), and the upper side in Figures 3(b), 7, and 8 will be referred to as "top" or "upper," the back side of the page in Figure 3(a), and the lower side in Figures 3(b), 7, and 8 will be referred to as "bottom" or "downward," the left side in Figures 3 to 8 will be referred to as "left," and the right side in Figures 3 to 8 will be referred to as "right."

[0118] The method for peeling the protective film 12 using this film peeling device 100 also includes, in this embodiment, a first step of transporting and supplying a curved multilayer laminate 15, which is placed on a belt 33 provided by a first transport unit 30, to a peeling unit 50; a second step of obtaining a curved optical sheet 10 by peeling the protective film 12 from the curved multilayer laminate 15 in the peeling unit 50, which is fed to the second transport unit 40 side while gripping the curved multilayer laminate 15 transported from the first transport unit 30 between a first rotating roller 67 and a second rotating roller 77; and a third step of receiving and transporting the curved optical sheet 10 obtained in the peeling unit 50 by placing it on a belt 43 provided by a second transport unit 40.

[0119] The following describes each step of the method for peeling off the protective film 12 using the film peeling device 100 of this embodiment.

[0120] (1st step) First, the curved multilayer laminate 15, which is placed on the belt 33 provided by the first conveying unit 30, is conveyed and supplied to the peeling unit 50.

[0121] (1B-1) First, in the same manner as in step (1A-1), the curved multilayer laminate 15 is placed on the belt 33 provided by the first conveying unit 30.

[0122] (1B-2) Next, the curved multilayer laminate 15 is transported downstream in the transport direction on the belt 33, causing its tip to protrude from the tip of the first transport section 30 on the transport direction side. Then, as shown in Figure 7(a), the curved multilayer laminate 15 is supplied from the first transport section 30 to the peeling section 50 by inserting its tip between the first rotating roller 67 and the second rotating roller 77.

[0123] Prior to the tip of the curved multilayer laminate 15 making contact with the first adhesive sheet 80, the first rotating roller 67 is positioned, as shown in Figure 7(a), at a height where its top is approximately coincident with the guide member 34 of the first transport unit 30 in the vertical direction (orthogonal direction).

[0124] Furthermore, the first rotating roller 67 and the second rotating roller 77 are positioned at a first position where the central axis of the second rotating roller 77, along the orthogonal direction, is located downstream in the conveying direction relative to the central axis of the first rotating roller 67, along the orthogonal direction. Moreover, at this first position, the distance between the first rotating roller 67 and the second rotating roller 77 is set to the size of the clamping distance that allows the curved multilayer laminate 15 to be clamped between the first rotating roller 67 and the second rotating roller 77.

[0125] As described above, by positioning the first rotating roller 67 and the second rotating roller 77 in the first position prior to contact of the tip of the curved multilayer laminate 15 with the first adhesive sheet 80, the tip of the curved multilayer laminate 15 can be inserted between the first rotating roller 67 and the second rotating roller 77 while being sandwiched between them.

[0126] Through these processes (1B-1) and (1B-2), the curved multilayer laminate 15 is transported and supplied to the peeling section 50.

[0127] (2nd process) Next, in the peeling section 50, the curved multilayer laminate 15 conveyed from the first conveying section 30 is gripped between the first rotating roller 67 and the second rotating roller 77 and sent to the second conveying section 40, thereby peeling off the protective film 12 from the curved multilayer laminate 15 to obtain the curved optical sheet 10.

[0128] (2B-1) First, as explained in step (1B-2) above, the curved multilayer laminate 15 that has been transported from the first transport section 30 is moved (reached) to a position corresponding to the first rotating roller 67 and the second rotating roller 77 in the peeling section 50 located downstream in the transport direction (left-right direction), as shown in Figure 7(a), and the first rotating roller 67 and the second rotating roller 77 grip the tip of the curved multilayer laminate 15.

[0129] Here, at this first position, the distance between the first rotating roller 67 and the second rotating roller 77 is set to the size of the clamping distance that allows the curved multilayer laminate 15 to be clamped between the first rotating roller 67 and the second rotating roller 77. Therefore, the leading edge of the curved multilayer laminate 15 can be clamped between the first rotating roller 67 and the second rotating roller 77 almost simultaneously with the leading edge of the curved multilayer laminate 15 reaching the positions corresponding to the first rotating roller 67 and the second rotating roller 77.

[0130] Furthermore, this clamping distance is set to a size that allows the first adhesive sheet 80, the curved multilayer laminate 15, and the second adhesive sheet 90 to be compressed between the first rotating roller 67 and the second rotating roller 77. As a result of this compression, the protective film 12 located on the curved concave side of the curved multilayer laminate 15 can be attached to the first adhesive sheet 80, and the protective film 12 located on the curved convex side of the curved multilayer laminate 15 can be attached to the second adhesive sheet 90.

[0131] Furthermore, when the tip of the curved multilayer laminate 15 is clamped between the first rotating roller 67 and the second rotating roller 77 at this clamping distance, in this embodiment, the positions of the first rotating roller 67 and the second rotating roller 77 in the conveying direction are set so that the tangent to the tip of the curved multilayer laminate 15 is approximately parallel to the tangent to the first rotating roller 67 and the second rotating roller 77 at the position where the central axes passing through both the center of the first rotating roller 67 and the center of the second rotating roller 77 intersect. As a result, the central axis of the second rotating roller 77 along the orthogonal direction and the central axis of the first rotating roller 67 along the orthogonal direction are positioned at the first position located downstream in the conveying direction, and the tip of the curved multilayer laminate 15 is clamped between the first rotating roller 67 and the second rotating roller 77 while maintaining a state in which the tip of the curved multilayer laminate 15 is approximately parallel to both the first rotating roller 67 and the second rotating roller 77, which are positioned at the first position located downstream in the conveying direction. Therefore, by clamping the protective film 12 located on the curved concave side of the curved multilayer laminate 15 with the first adhesive sheet 80, and furthermore, the protective film 12 located on the curved convex side of the curved multilayer laminate 15 can be reliably attached with the second adhesive sheet 90. In other words, by attaching the first adhesive sheet 80 to the protective film 12 located on the curved concave side and the second adhesive sheet 90 to the protective film 12 located on the curved convex side at the leading edge of the curved multilayer laminate 15, a starting point for peeling both protective films 12 from the curved optical sheet 10 can be reliably formed.

[0132] (2B-2) Next, the leading edge of the curved multilayer laminate 15, which is held between the first rotating roller 67 and the second rotating roller 77, is fed downstream in the conveying direction by the rotation of the first rotating roller 67 and the second rotating roller 77, as shown in Figure 7(b). That is, the curved multilayer laminate 15, which is held between the first rotating roller 67 and the second rotating roller 77, is fed continuously along the conveying direction from the leading edge to the base end.

[0133] Here, the first rotating roller 67 rotates in conjunction with the feeding of the first adhesive sheet 80 wrapped around the first rotating roller 67, and the second rotating roller 77 rotates in conjunction with the feeding of the second adhesive sheet 90 wrapped around the second rotating roller 77. Then, in the above step (2B-1), the protective film 12 on the curved concave side is attached to the first adhesive sheet 80 at a position corresponding to the tip of the curved multilayer laminate 15, and the protective film 12 on the curved convex side is attached to the second adhesive sheet 90. Therefore, as the first adhesive sheet 80 and the second adhesive sheet 90 are fed out, the protective films 12 on both sides are peeled off from the curved multilayer laminate 15 at a position corresponding to the tip of the curved multilayer laminate 15.

[0134] Therefore, by feeding the curved multilayer laminate 15 along the transport direction from the tip to the base, the gripping of the curved multilayer laminate 15 by the first rotating roller 67 and the second rotating roller 77, and the peeling of the protective film 12 by the first adhesive sheet 80 and the second adhesive sheet 90 are continuously performed. In other words, by continuously feeding the curved multilayer laminate 15 from the tip to the base, the peeling of the protective film 12 (first film) on the curved concave side from the curved optical sheet 10 by the first adhesive sheet 80 and the peeling of the protective film 12 (second film) on the curved convex side from the curved optical sheet 10 by the second adhesive sheet 90 can be continuously performed.

[0135] (2B-3) Next, the curved multilayer laminate 15 is fed downstream in the conveying direction by the rotation of the first rotating roller 67 and the second rotating roller 77, as shown in Figures 7(b) to 8(b), until the position where it is gripped by the first rotating roller 67 and the second rotating roller 77 reaches the base end of the curved multilayer laminate 15.

[0136] Here, the continuous feeding of the curved multilayer laminate 15 downstream in the transport direction by the rotation of the first rotating roller 67 and the second rotating roller 77 allows for the continuous peeling of the protective film 12 (first film) from the curved concave side by the first adhesive sheet 80 and the peeling of the protective film 12 (second film) from the curved convex side by the second adhesive sheet 90, as described in step (2B-3).

[0137] Therefore, by continuously feeding the curved multilayer laminate 15 downstream in the transport direction (left-right direction) by the rotation of the first rotating roller 67 and the second rotating roller 77 until it reaches the base end of the curved multilayer laminate 15, the peeling of both protective films 12 from the curved optical sheet 10 can be carried out from the front end to the base end of the curved multilayer laminate 15, that is, over the entire surface of the curved multilayer laminate 15. Thus, by feeding the curved multilayer laminate 15 in this way, a curved optical sheet 10 from which the protective films 12 have been peeled off can be obtained.

[0138] Furthermore, in this embodiment, when the tip of the curved multilayer laminate 15 is gripped by the first rotating roller 67 and the second rotating roller 77 in step (2B-1), as described above, the first rotating roller 67 and the second rotating roller 77 are positioned at a first position where the central axis of the second rotating roller 77, along the orthogonal direction, is located downstream in the conveying direction with respect to the central axis of the first rotating roller 67, along the orthogonal direction. In contrast, in the process from step (2B-2) to this step (2B-3), when the position where the curved multilayer laminate 15 is gripped by the first rotating roller 67 and the second rotating roller 77 is changed from the leading edge to the base edge of the curved multilayer laminate 15, and the curved multilayer laminate 15 is continuously fed downstream in the conveying direction, the second rotating roller 77 is configured to move continuously from the first position shown in Figures 7(a) and 7(b) to the third position shown in Figures 8(d) and 8(e), passing through the second position shown in Figure 7(c), where the central axis of the second rotating roller 77 along the orthogonal direction and the central axis of the first rotating roller 67 along the orthogonal direction overlap in the conveying direction, and then moving to the third position shown in Figures 8(d) and 8(e), where the central axis of the second rotating roller 77 along the orthogonal direction is located upstream in the conveying direction of the first rotating roller 67.

[0139] Then, during the continuous movement of the second rotating roller 77 from the first position to the third position in the process from step (2B-2) to this step (2B-3), while the second rotating roller 77 moves from the first position to the second position, the first rotating roller 67 and the second rotating roller 77 move in a direction perpendicular to the curved convex side (upper side) by the operation of the first moving means and the second moving means, respectively. Subsequently, while the second rotating roller 77 moves from the second position to the third position, the first rotating roller 67 and the second rotating roller 77 move in a direction perpendicular to the curved concave side (downward side) by the operation of the first moving means and the second moving means, respectively. As the second rotating roller 77 moves continuously in the conveying direction from the first position to the third position, moving the first rotating roller 67 and the second rotating roller 77 in this orthogonal direction ensures that the distance between the first rotating roller 67 and the second rotating roller 77 is maintained at a size that allows the curved multilayer laminate 15 to be gripped between the first rotating roller 67 and the second rotating roller 77.

[0140] Furthermore, in the process from step (2B-2) to this step (2B-3), the movement of the second rotating roller 77 from the first position to the third position along the conveying direction, and the movement of the first rotating roller 67 and the second rotating roller 77 along the orthogonal direction corresponding to this movement from the first position to the third position, When the curved multilayer laminate 15 is held between the first rotating roller 67 and the second rotating roller 77 from the leading edge to the base edge of the curved multilayer laminate 15, that is, from the start to the end of the peeling of the protective film 12 from the curved optical sheet 10 by the first rotating roller 67 and the second rotating roller 77, the straight line connecting the leading edge and the base edge of the curved multilayer laminate 15 can be set to be substantially parallel to the transport direction. Therefore, the supply of the curved multilayer laminate 15 from the first transport unit 30 to the peeling unit 50, the peeling of the protective film 12 from the curved optical sheet 10 in the peeling unit 50, and the receiving of the curved optical sheet 10 from the peeling unit 50 by the second transport unit 40 can be carried out more smoothly.

[0141] By going through these steps (2B-1) to (2B-3), a curved optical sheet 10 can be obtained from which the protective film 12 has been peeled off the curved multilayer laminate 15.

[0142] (3rd step) Next, the curved optical sheet 10 obtained in the peeling section 50 is received and transported from the peeling section 50 by placing it on the belt 43 provided in the second transport section 40.

[0143] (3B-1) First, in the same manner as in step (3A-1), the leading edge of the curved optical sheet 10 is brought into contact with the belt 43 on the lead member 44 side of the second transport unit 40, which is located on the upstream side in the transport direction, as shown in Figure 8(d).

[0144] (3B-2) Next, in the same manner as in step (3A-2), the curved optical sheet 10 placed on the belt 43 of the second transport unit 40 is transported along the transport direction on the belt 43.

[0145] Then, the method of peeling off the protective film using the film peeling device 100 is completed by picking up the curved optical sheet 10 being transported on the belt 43 using your hand or a picking device.

[0146] Through these processes (3B-1) and (3B-2), the curved optical sheet 10 is received from the peeling section 50 by the second transport section 40, and then transported by the second transport section 40.

[0147] As described above, by going through the first to third steps using the film peeling device 100, a curved optical sheet 10 from which the protective film 12 has been peeled off the curved multilayer laminate 15 can be smoothly obtained.

[0148] In the first and second embodiments, the cases described above involved peeling off both protective films 12 from a curved multilayer laminate 15 in which both the curved concave surface and the curved convex surface of the curved optical sheet 10 are covered (protected) by protective films 12, using a film peeling device 100. However, either the protective film 12 protecting the curved concave surface (first film) or the protective film 12 protecting the curved convex surface (second film) may be peeled off individually.

[0149] Of these, if the protective film 12 (first film) that protects the curved concave surface is to be peeled off from the curved optical sheet 10 independently, this can be done, for example, by the following method.

[0150] In other words, by using a non-adhesive sheet instead of the second adhesive sheet 90, which is wound around the second unwinding roller 71, then around the second rotating roller 77, and then wound onto the second winding roller 72, the protective film 12 (first film) can be peeled off independently.

[0151] Alternatively, the protective film 12 (first film) can also be peeled off independently by using a film peeling device 100 in which the peeling section 50 does not have a second peeling section 70, but has a first peeling section 60 on its own, and the first peeling section 60 further comprises a second rotating roller 77 and a second air cylinder 78 in addition to the above configuration.

[0152] Furthermore, when the protective film 12 (first film) protecting the curved concave surface is peeled off independently, the curved multilayer laminate 15 may or may not have a protective film 12 (second film) protecting the curved convex surface.

[0153] In contrast, when the protective film 12 (second film) protecting the curved convex surface is to be peeled off from the curved optical sheet 10 independently, it can be done, for example, by the following method.

[0154] In other words, by using a non-adhesive sheet instead of the first adhesive sheet 80, which is wound around the first unwinding roller 61, then around the first rotating roller 67, and then wound onto the first winding roller 62, the protective film 12 (second film) can be peeled off independently.

[0155] Alternatively, the protective film 12 (second film) can also be peeled off independently by using a film peeling device 100 in which the peeling section 50 does not have the first peeling section 60, but has a second peeling section 70 on its own, and the second peeling section 70 further comprises a first rotating roller 67 and a first air cylinder 68 in addition to the above configuration.

[0156] Furthermore, when the protective film 12 (second film) protecting the curved concave surface is peeled off independently, the curved multilayer laminate 15 may or may not have a protective film 12 (first film) protecting the curved convex surface. Although the film peeling apparatus of the present invention has been described above, the present invention is not limited thereto, and each part constituting the film peeling apparatus can be replaced with any configuration that can perform a similar function.

[0157] In the above embodiment, the film peeling device 100 was described as being equipped with a first air cylinder 68 and a second air cylinder 78, respectively, as moving means for moving the first rotating roller 67 and the second rotating roller 77 along the orthogonal direction. However, the moving means are not limited to this, and if the first rotating roller 67 and the second rotating roller 77 are to be positioned with better accuracy, they may be composed of actuators or the like. [Explanation of Symbols]

[0158] 10 curved optical sheets 11 Optical Sheets 12 protective films 14 resin layer 15. Curved multilayer laminate 16 Multilayer laminate 17 lenses 18 molds 20 Conveying section 30. First Conveyor Unit 31 Tensioner 32 Tensioner 33 belts 34 Induction Member 40 Second Conveyor Unit 41 Tensioner 42 Tensioner 43 belts 44 Lead member 50 Peeled section 60 First peeling section 61 Volume 1 Release Laura 62. First reel roller 63 Tensioner 64 Tensioner 65 Tensioner 66 Tensioner 67. First Rotation Roller 68. First air cylinder 70 Second peeling section 71 Volume 2 Release Laura 72. Second reel roller 73 Tensioner 74 Tensioner 75 Tensioner 76 Tensioner 77. Second Rotation Roller 78. Second air cylinder 80 First adhesive sheet 90 Second adhesive sheet 100 Film peeling device

Claims

1. A film peeling apparatus used to obtain a curved substrate by peeling off the first and second films from a curved multilayer laminate comprising a curved substrate having one side as a curved concave surface and the other side as a curved convex surface, a first film attached to the curved concave surface, and a second film attached to the curved convex surface, The system comprises a transport unit for transporting the curved multilayer laminate and the curved substrate, and a peeling unit for peeling the first film and the second film from the curved multilayer laminate. The transport unit comprises a first transport unit located upstream of the peeling unit in the transport direction for transporting the curved multilayer laminate, which transports and supplies the curved multilayer laminate to the peeling unit, and a second transport unit located downstream of the peeling unit in the transport direction, which receives and transports the curved substrate from the peeling unit after the first and second films have been peeled off from the curved multilayer laminate in the peeling unit. The peeling section includes a first peeling section located on the curved concave side in a direction perpendicular to the transport direction, for peeling the first film from the curved multilayer laminate, and a second peeling section located on the curved convex side in a direction perpendicular to the transport direction, for peeling the second film from the curved multilayer laminate. The first peeling section comprises a first unwinding roller located upstream in the conveying direction and around which a first adhesive sheet having adhesive properties is wound; a first winding roller located downstream in the conveying direction and winding up the first adhesive sheet; and a first rotating roller located between the first unwinding roller and the first winding roller in the conveying direction, in which the first adhesive sheet is wrapped around and rotated while in contact with the first adhesive sheet in the longitudinal direction. The second peeling section comprises a second unwinding roller located upstream in the conveying direction, around which a second adhesive sheet having adhesive properties is wound; a second winding roller located downstream in the conveying direction for winding up the second adhesive sheet; and a second rotating roller located between the second unwinding roller and the second winding roller in the conveying direction, in which the second adhesive sheet is wrapped around and rotated while in contact with the middle of the second adhesive sheet in its longitudinal direction. The first peeling section further includes a first moving means for moving the first rotating roller in the orthogonal direction, The first rotating roller is configured to be movable along the orthogonal direction by the operation of the first moving means, and is positioned at a clamping distance such that the first rotating roller and the second rotating roller can clamp the curved multilayer laminate when the curved multilayer laminate is supplied from the first conveying unit to the peeling unit, and is configured such that the first film is peeled off the curved multilayer laminate by the first adhesive sheet and the second film is peeled off the curved multilayer laminate by the second adhesive sheet. The second peeling section further includes a second moving means for moving the second rotating roller in the orthogonal direction, The second rotating roller is configured to be movable along the orthogonal direction by the operation of the second moving means, The first rotating roller and the second rotating roller are positioned such that the central axis of the first rotating roller along the orthogonal direction and the central axis of the second rotating roller along the orthogonal direction overlap in the conveying direction. Prior to supplying the curved multilayer laminate from the first transport unit to the peeling unit, The distance between the first rotating roller and the second rotating roller is set to the magnitude of the clamping distance. A film peeling device characterized in that, when the curved multilayer laminate comes into contact with the first adhesive sheet, the first rotating roller and the second rotating roller move along the orthogonal direction from the first peeling section side to the second peeling section side by the operation of the first moving means and the second moving means, respectively, and so that when the curved multilayer laminate is supplied between the first rotating roller and the second rotating roller, the separation distance maintains the clamping distance.

2. The film peeling apparatus according to claim 1, wherein, when the curved multilayer laminate is supplied between the first rotating roller and the second rotating roller, the tangent at the end of the curved multilayer laminate that contacts the first adhesive sheet is parallel to the conveying direction.

3. A film peeling apparatus used to obtain a curved substrate by peeling off the first and second films from a curved multilayer laminate comprising a curved substrate having one side as a curved concave surface and the other side as a curved convex surface, a first film attached to the curved concave surface, and a second film attached to the curved convex surface, The system comprises a transport unit for transporting the curved multilayer laminate and the curved substrate, and a peeling unit for peeling the first film and the second film from the curved multilayer laminate. The transport unit comprises a first transport unit located upstream of the peeling unit in the transport direction for transporting the curved multilayer laminate, which transports and supplies the curved multilayer laminate to the peeling unit, and a second transport unit located downstream of the peeling unit in the transport direction, which receives and transports the curved substrate from the peeling unit after the first and second films have been peeled off from the curved multilayer laminate in the peeling unit. The peeling section includes a first peeling section located on the curved concave side in a direction perpendicular to the transport direction, for peeling the first film from the curved multilayer laminate, and a second peeling section located on the curved convex side in a direction perpendicular to the transport direction, for peeling the second film from the curved multilayer laminate. The first peeling section comprises a first unwinding roller located upstream in the conveying direction and around which a first adhesive sheet having adhesive properties is wound; a first winding roller located downstream in the conveying direction and winding up the first adhesive sheet; and a first rotating roller located between the first unwinding roller and the first winding roller in the conveying direction, in which the first adhesive sheet is wrapped around and rotated while in contact with the first adhesive sheet in the longitudinal direction. The second peeling section comprises a second unwinding roller located upstream in the conveying direction, around which a second adhesive sheet having adhesive properties is wound; a second winding roller located downstream in the conveying direction for winding up the second adhesive sheet; and a second rotating roller located between the second unwinding roller and the second winding roller in the conveying direction, in which the second adhesive sheet is wrapped around and rotated while in contact with the middle of the second adhesive sheet in its longitudinal direction. The first peeling section further includes a first moving means for moving the first rotating roller in the orthogonal direction, The first rotating roller is configured to be movable along the orthogonal direction by the operation of the first moving means, and is positioned at a clamping distance such that the first rotating roller and the second rotating roller can clamp the curved multilayer laminate when the curved multilayer laminate is supplied from the first conveying unit to the peeling unit, and is configured such that the first film is peeled off the curved multilayer laminate by the first adhesive sheet and the second film is peeled off the curved multilayer laminate by the second adhesive sheet. The second peeling section further includes a second moving means for moving the second rotating roller in the orthogonal direction, The second rotating roller is configured to be movable along the orthogonal direction by the operation of the second moving means, The first rotating roller and the second rotating roller are positioned such that the central axis of the first rotating roller along the orthogonal direction and the central axis of the second rotating roller along the orthogonal direction overlap in the conveying direction. Prior to supplying the curved multilayer laminate from the first transport unit to the peeling unit, The distance between the first rotating roller and the second rotating roller is set to be greater than the magnitude of the clamping distance. When the curved multilayer laminate comes into contact with the first adhesive sheet, the first rotating roller moves along the orthogonal direction from the first peeling portion side to the second peeling portion side by the operation of the first moving means, and is configured to be positioned such that the separation distance is the clamping distance when the curved multilayer laminate is supplied between the first rotating roller and the second rotating roller. A film peeling device characterized in that, when the curved multilayer laminate is supplied between the first rotating roller and the second rotating roller, the tangent at the end of the curved multilayer laminate that contacts the first adhesive sheet is parallel to the conveying direction.

4. A film peeling apparatus used to obtain a curved substrate by peeling off the first and second films from a curved multilayer laminate comprising a curved substrate having one side as a curved concave surface and the other side as a curved convex surface, a first film attached to the curved concave surface, and a second film attached to the curved convex surface, The system comprises a transport unit for transporting the curved multilayer laminate and the curved substrate, and a peeling unit for peeling the first film and the second film from the curved multilayer laminate. The transport unit comprises a first transport unit located upstream of the peeling unit in the transport direction for transporting the curved multilayer laminate, which transports and supplies the curved multilayer laminate to the peeling unit, and a second transport unit located downstream of the peeling unit in the transport direction, which receives and transports the curved substrate from the peeling unit after the first and second films have been peeled off from the curved multilayer laminate in the peeling unit. The peeling section includes a first peeling section located on the curved concave side in a direction perpendicular to the transport direction, for peeling the first film from the curved multilayer laminate, and a second peeling section located on the curved convex side in a direction perpendicular to the transport direction, for peeling the second film from the curved multilayer laminate. The first peeling section comprises a first unwinding roller located upstream in the conveying direction and around which a first adhesive sheet having adhesive properties is wound; a first winding roller located downstream in the conveying direction and winding up the first adhesive sheet; and a first rotating roller located between the first unwinding roller and the first winding roller in the conveying direction, in which the first adhesive sheet is wrapped around and rotated while in contact with the first adhesive sheet in the longitudinal direction. The second peeling section comprises a second unwinding roller located upstream in the conveying direction, around which a second adhesive sheet having adhesive properties is wound; a second winding roller located downstream in the conveying direction for winding up the second adhesive sheet; and a second rotating roller located between the second unwinding roller and the second winding roller in the conveying direction, in which the second adhesive sheet is wrapped around and rotated while in contact with the middle of the second adhesive sheet in its longitudinal direction. The first peeling section further includes a first moving means for moving the first rotating roller in the orthogonal direction, The first rotating roller is configured to be movable along the orthogonal direction by the operation of the first moving means, and is positioned at a clamping distance such that the first rotating roller and the second rotating roller can clamp the curved multilayer laminate when the curved multilayer laminate is supplied from the first conveying unit to the peeling unit, and is configured such that the first film is peeled off the curved multilayer laminate by the first adhesive sheet and the second film is peeled off the curved multilayer laminate by the second adhesive sheet. The second peeling section further includes a second moving means for independently moving the second rotating roller in the conveying direction and the orthogonal direction, The second rotating roller is configured to move independently along the conveying direction and the orthogonal direction by the operation of the second moving means, The film peeling device is characterized in that the second rotating roller is configured to be able to move continuously from a first position, where the central axis of the second rotating roller along the orthogonal direction is located downstream in the conveying direction of the first rotating roller, through a second position, where the central axis of the second rotating roller along the orthogonal direction and the central axis of the first rotating roller along the orthogonal direction overlap in the conveying direction, to a third position, where the central axis of the second rotating roller along the orthogonal direction is located upstream in the conveying direction of the first rotating roller.

5. Prior to supplying the curved multilayer laminate from the first transport unit to the peeling unit, The distance between the first rotating roller and the second rotating roller is set to the magnitude of the clamping distance. While the second rotating roller moves from the first position to the second position due to the operation of the second moving means, the first rotating roller and the second rotating roller move along the orthogonal direction from the first peeling portion side to the second peeling portion side, respectively, due to the operation of the first moving means and the second moving means, and thereafter, While the second rotating roller moves from the second position to the third position due to the operation of the second moving means, the first rotating roller and the second rotating roller move along the orthogonal direction from the second peeling portion side to the first peeling portion side, respectively, due to the operation of the first moving means and the second moving means. The film peeling apparatus according to claim 4, wherein the separation distance is configured to maintain the clamping distance when the curved multilayer laminate is sandwiched between the first rotating roller and the second rotating roller.

6. The film peeling apparatus according to claim 5, wherein when the curved multilayer laminate is sandwiched between the first rotating roller and the second rotating roller, the straight line connecting one end of the curved multilayer laminate in the conveying direction and the other end is parallel to the conveying direction.

7. A film peeling apparatus used to obtain a curved substrate by peeling off the first film from a curved multilayer laminate having a curved substrate with one side being a curved concave surface and the other side being a curved convex surface, the laminate having a first film attached to the curved concave surface, The system comprises a transport unit for transporting the curved multilayer laminate and the curved substrate, and a peeling unit for peeling the first film from the curved multilayer laminate. The transport unit comprises a first transport unit located upstream of the peeling unit in the transport direction for transporting the curved multilayer laminate, which transports and supplies the curved multilayer laminate to the peeling unit, and a second transport unit located downstream of the peeling unit in the transport direction, which receives and transports the curved substrate from the peeling unit after the first film has been peeled off the curved multilayer laminate in the peeling unit. The peeling portion is located on the curved concave side in a direction perpendicular to the transport direction and has a first peeling portion that peels the first film from the curved multilayer laminate. The first peeling section comprises a first unwinding roller located upstream in the conveying direction and around which a first adhesive sheet having adhesive properties is wound; a first winding roller located downstream in the conveying direction and winding up the first adhesive sheet; a first rotating roller located between the first unwinding roller and the first winding roller in the conveying direction, in which the first adhesive sheet is wrapped around and rotated while in contact with the first adhesive sheet in the longitudinal direction; a second rotating roller located on the curved convex side perpendicular to the first rotating roller; and a first moving means for moving the first rotating roller in the perpendicular direction. The film peeling apparatus is characterized in that the first rotating roller is configured to be movable along the orthogonal direction by the operation of the first moving means, and is positioned at a position where the first rotating roller and the second rotating roller can grip the curved multilayer laminate when it is supplied from the first transport unit to the peeling unit, and the curved multilayer laminate is fed to the second transport unit side by this gripping and the rotation of the first rotating roller and the second rotating roller, and the first film is peeled off from the curved multilayer laminate by the first adhesive sheet.

8. A film peeling apparatus used to obtain a curved substrate by peeling off the second film from a curved multilayer laminate having a curved substrate with one side being a curved concave surface and the other side being a curved convex surface, the laminate having a second film attached to the curved convex surface, The system comprises a transport unit for transporting the curved multilayer laminate and the curved substrate, and a peeling unit for peeling the second film from the curved multilayer laminate. The transport unit comprises a first transport unit, which is located upstream of the peeling unit in the transport direction for transporting the curved multilayer laminate, and transports and supplies the curved multilayer laminate to the peeling unit; and a second transport unit, which is located downstream of the peeling unit in the transport direction, and receives and transports the curved substrate from the peeling unit after the second film has been peeled off from the curved multilayer laminate in the peeling unit. The peeling portion is located on the curved convex side in a direction perpendicular to the transport direction and has a second peeling portion that peels the second film from the curved multilayer laminate. The second peeling section comprises a second unwinding roller located upstream in the conveying direction and around which a second adhesive sheet having adhesive properties is wound; a second winding roller located downstream in the conveying direction and winding up the second adhesive sheet; a second rotating roller located between the second unwinding roller and the second winding roller in the conveying direction, in which the second adhesive sheet is partially in contact with the second adhesive sheet in its longitudinal direction and rotates while being wrapped around it; a first rotating roller located on the curved concave side perpendicular to the second rotating roller; and a first moving means for moving the first rotating roller in the perpendicular direction. The film peeling apparatus is characterized in that the first rotating roller is configured to be movable along the orthogonal direction by the operation of the first moving means, and is positioned at a position where the first rotating roller and the second rotating roller can grip the curved multilayer laminate when it is supplied from the first transport unit to the peeling unit, and the curved multilayer laminate is fed to the second transport unit side by this gripping and the rotation of the first and second rotating rollers, and the second film is peeled off from the curved multilayer laminate by the second adhesive sheet.

Images