Peeling device, stack-peeling device, and peeling method

Abstract

To provide a peeling device capable of suppressing damage applied to a sheet during peeling by reducing force applied to the sheet during peeling thereof, and to provide a peeling method therefor.SOLUTION: A peeling device 1 comprises: a first tension-detaching mechanism 21, a second tension-detaching mechanism 22, a peeling mechanism 3, and a peeling tension control mechanism 50 by which a peeling tension control operation is performed by controlling at least one of the first tension-detaching mechanism 21 and the second tension-detaching mechanism 22 in such a manner that the peeling tension becomes smaller than a reference value of a tension control width.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a peeling device, a stack peeling device and a peeling method. [Background technology]

[0002] There is a technology in which a long, sheet-like substrate with a long sheet attached to its surface is transported at a predetermined speed, and the sheet is peeled off from the substrate at a branching point where the substrate and the sheet split off and proceed in different directions (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-2411 Summary of the Invention [Problem to be solved by the invention]

[0004] When peeling a sheet from a substrate, a shear force may be applied to the sheet at the peeling point. For example, shear force is likely to be applied to the sheet when there is variation in synchronization between the rollers that transport the substrate. If a force such as a shear force is applied from the outside to the sheet during peeling, the sheet may be damaged. Recently, there has been a demand for further reduction in damage to sheets during peeling.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a peeling device and a peeling method that can reduce the force applied to the sheet during peeling and suppress damage to the sheet during peeling. [Means for solving the problem]

[0006] The peeling device of the present invention has a transport area including an inlet area into which a multilayer sheet including a long, sheet-like first sheet and a second sheet attached to the surface of the first sheet is carried in, a peeling area into which the carried-in multilayer sheet is peeled into the first sheet and the second sheet, and an outlet area into which the first sheet is carried out after the peeling is completed, and the peeling device further includes a first tension separating mechanism disposed between the inlet area and the peeling area, which controls an inlet tension applied to the first sheet in the inlet area and a peeling tension applied to the first sheet in the peeling area to different values, and a second tension separating mechanism disposed between the peeling area and the outlet area. the peeling mechanism is arranged in the peeling area and performs a peeling operation by holding the second sheet and moving it relative to the first sheet so as to separate it from the first sheet, thereby peeling the multi-layer sheet into the first sheet and the second sheet; and the peeling tension control mechanism detects the peeling tension and controls at least one of the first tension release mechanism and the second tension release mechanism to perform a peeling tension control operation so that the peeling tension is smaller than a reference value of a tension control width.

[0007] The peeling method of the present invention is a peeling method for peeling a multilayer sheet including a long, sheet-like first sheet and a second sheet attached to the surface of the first sheet into the first sheet and the second sheet, and when the area in which the multilayer sheet is peeled into the first sheet and the second sheet is defined as the peeling area, the peeling method includes the steps of controlling the entrance tension applied to the first sheet before being transported to the peeling area and the peeling tension applied to the first sheet in the peeling area to different values, and controlling the peeling tension and the exit tension applied to the first sheet after being transported from the peeling area to different values, and the peeling tension is smaller than a reference value of the tension control width. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a peeling device and a peeling method that can reduce the force applied to the sheet during peeling and suppress damage to the sheet during peeling. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a stack peeling device according to a first embodiment of the present invention. [Figure 2] FIG. 2 shows the state of carrying in and positioning the multi-layer sheet. [Figure 3] FIG. 3 shows the state in which the stage holds the multilayer sheet. [Figure 4] FIG. 4 is a diagram showing a state in which the delivery table is raised. [Figure 5] FIG. 5 shows the state where peeling begins. [Figure 6] FIG. 6 shows a state in which peeling is progressing. [Figure 7] FIG. 7 shows the state after peeling is completed. [Figure 8] FIG. 8 is a diagram showing a schematic configuration of a stack peeling device according to a second embodiment of the present invention. [Figure 9] FIG. 9 is a diagram showing the state in which the second sheet is laminated. DETAILED DESCRIPTION OF THE INVENTION

[0010] (peeling device and stack peeling device) An embodiment of the invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a stacking and peeling device 100. The peeling device 1 is a device for peeling a second sheet 120 attached to a first sheet 110 from the first sheet 110. The second sheet 120 peeled from the first sheet 110 may be stacked and pressed together. A mechanism for stacking and pressing the second sheets 120 is called a stacking mechanism 80. An apparatus including the peeling device 1 and the stacking mechanism 80 is called a stacking and peeling device 100. The peeling device 1 will be described below as a first embodiment of the present invention.

[0011] (multi-layer sheet) A sheet in which a second sheet 120 is attached to the surface 111 of a first sheet 110 is called a multi-layer sheet 130. The first sheet 110 is a long, sheet-like sheet. The second sheet 120 is a strip-like sheet. The second sheet 120 being a strip-like sheet is an example. The second sheet 120 may also be a long, sheet-like sheet, for example.

[0012] (First sheet) The first sheet 110 is, for example, a resin sheet. The resin sheet may be made of, for example, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide (PI), or cycloolefin polymer (COP). The thickness of the first sheet 110 is, for example, 10 μm or more and 100 μm or less. The width of the first sheet 110 is, for example, 100 mm or more and 1000 mm or less.

[0013] (Second sheet) The material of the second sheet 120 is, for example, a ceramic green sheet, a laminate of ceramic green sheets, resin, metal, or a laminate of multiple layers thereof, etc. The thickness of the second sheet 120 is, for example, 0.1 μm or more and 10 μm or less.

[0014] As described above, the second sheet 120 may be divided into a plurality of strips. When the second sheet 120 is a strip-shaped sheet, the second sheet 120 may be partially attached to the surface 111 of the first sheet 110. When the second sheet 120 is a long sheet, the second sheet 120 may be attached to the entire surface 111 of the first sheet 110.

[0015] (multi-layer sheet) A sheet in which the first sheet 110 and the second sheet 120 are bonded together is called a multilayer sheet 130. The multilayer sheet 130 may be formed by depositing the second sheet 120 on the surface 111 of the first sheet 110. An adhesive layer, a sticky layer, a release layer, etc. may be present between the first sheet 110 and the second sheet 120.

[0016] (downstream direction) The first sheet 110 is unwound from the unwind roller 20 and wound around the winding roller 23. In FIG. 1, the direction from upstream to downstream in the transport of the first sheet 110 is indicated by an arrow 300. The direction 300 from upstream to downstream is called the downstream direction 300. The downstream direction 300 indicates the general direction of movement of the first sheet 110. The downstream direction 300 does not mean that the first sheet 110 always moves in that direction.

[0017] (Laura) In addition to the unwinding roller 20 and the winding roller 23, the peeling device 1 includes an auxiliary roller 28, a first tension disconnecting mechanism 21, a guide roller 40, a post-peeling roller 41, and a second tension disconnecting mechanism 22. These are arranged in the downstream direction 300 in the following order: auxiliary roller 28, unwinding roller 20, first tension disconnecting mechanism 21, guide roller 40, post-peeling roller 41, second tension disconnecting mechanism 22, and winding roller 23.

[0018] (stage) The peeling mechanism 3 is disposed between the first tension releasing mechanism 21 and the second tension releasing mechanism 22. The peeling mechanism 3 includes a stage 30.

[0019] (Transport area) In the peeling device 1, the entire area where the first sheet 110 is transported is called a transport area 10. The transport area 10 is an area from the unwinding roller 20 to the take-up roller .

[0020] (Loading area, peeling area and unloading area) The transport area 10 includes an inlet area 11 , a peeling area 12 and an outlet area 13 .

[0021] The loading area 11 is an area before the multilayer sheet 130 is loaded into the peeling area 12. The loading area 11 is the area from the unwinding roller 20 to the first tension release mechanism 21. In the loading area 11, the multilayer sheet 130 is unwound from the unwinding roller 20. The first tension release mechanism 21 is included in the loading area 11.

[0022] The peeling region 12 is a region where the multilayer sheet 130 is peeled into the first sheet 110 and the second sheet 120. The peeling region 12 is a region from the first tension releasing mechanism 21 to the second tension releasing mechanism 22.

[0023] The discharge area 13 is an area where the first sheet 110 that has been peeled is discharged from the peeling area 12. The discharge area 13 is the area from the second tension release mechanism 22 to the winding roller 23. In the discharge area 13, the first sheet 110 is taken up by the winding roller 23. The second tension release mechanism 22 is included in the carry-in area 11. Below, the movement of each sheet will be explained for each area.

[0024] (Delivery area) The multilayer sheet 130 is wound in multiple layers around the outer peripheral surface of a cylindrical unwind roller 20. The unwind roller 20 rotates in the direction of arrow 400 around an axis 410. The unwind roller 20 may be a driven roller. A drive roller located downstream 300 from the unwind roller 20 transports the multilayer sheet 130 or the first sheet 110. When the unwind roller 20 is a driven roller, the unwind roller 20 rotates as the first sheet 110 is transported.

[0025] (Transport direction) As the unwinding roller 20 rotates in the direction of arrow 400, the multilayer sheet 130 is unwound from the unwinding roller 20. The multilayer sheet 130 unwound from the unwinding roller 20 passes through the auxiliary roller 28 and is then transported in the direction of arrow 401. By passing through the auxiliary roller 28, an appropriate contact length between the roller and the multilayer sheet 130 can be obtained in the first tension release mechanism 21. The direction in which the multilayer sheet 130 or the first sheet 110 is transported is called the transport direction. The transport direction means that the sheet is transported in an approximate direction, and does not mean that the sheet is transported in that exact direction.

[0026] The conveying direction changes variously within the conveying region 10. The conveying direction indicated by the arrow 401 is called the first conveying direction 401. In the following description, sheet conveyance will be described with reference to five conveying directions, namely, the first conveying direction 401 to the fifth conveying direction 405. The second conveying direction 402 to the fifth conveying direction 405 will be described later.

[0027] Although the conveying direction may differ among the first conveying direction 401 to the fifth conveying direction 405, the conveying direction is perpendicular to the axial direction of the shaft 410 of the roller such as the unwind roller 20. Furthermore, the multilayer sheet 130 or the first sheet 110 is parallel to a plane parallel to the conveying direction and the axial direction of the shaft 410 within the conveying region 10.

[0028] When the multilayer sheet 130 reaches the stage 30, the multilayer sheet 130 is unwound from the unwinding roller 20 in a direction such that the second sheet 120 faces the surface 31 of the stage 30. Figure 1 shows the unwinding state when the multilayer sheet 130 is wound around the unwinding roller 20 so that the second sheet 120 is on the inside of the first sheet 110.

[0029] (Loading tension) The tension of the first sheet 110 in the carry-in area 11 is called the carry-in tension 200. When the tension applied to the first sheet 110 in the carry-in area 11 changes, the tension applied at the position immediately before the first sheet 110 reaches the first tension release mechanism 21 is called the carry-in tension 200.

[0030] The configuration of the loading area 11 is not limited to the above example. At least one of a sheet handling mechanism and an apparatus for a process prior to the peeling process may be disposed in the loading area 11. The sheet handling mechanism includes a winding mechanism, a tension control mechanism, a compensator roll, etc. The apparatus for a process prior to the peeling process includes a printing apparatus, a laser processing apparatus, a rolling apparatus, etc. The apparatus for a process prior to the peeling process may be a film forming apparatus for forming a film of the second sheet 120 on the surface 111 of the first sheet 110. The apparatus for a process prior to the peeling process may be a half-cutting apparatus for facilitating peeling of the second sheet 120.

[0031] The maximum value of the carry-in tension 200 can be set to, for example, 5 N or more and 200 N or less. The carry-in tension 200 reaches its maximum value when the first sheet 110 is conveyed, for example.

[0032] The carry-in tension 200 can be measured, for example, by a tension sensor provided on the unwinding roller 20, the first tension release mechanism 21, or a roller (not shown) that contacts the multilayer sheet 130, or by a tension sensor provided separately from the roller.

[0033] (peeling area) The multilayer sheet 130 is transported from the loading area 11 to the peeling area 12 via the first tension release mechanism 21. The multilayer sheet 130 is transported in the direction of the arrow 402 and reaches the stage 30. The transport direction indicated by the arrow 402 is called the second transport direction 402. When the multilayer sheet 130 reaches the stage 30, the second sheet 120 of the multilayer sheet 130 comes into contact with the surface 31 of the stage 30. The second sheet 120 remains on the surface 31 of the stage 30, for example, by adsorption from the stage 30. The first sheet 110 is transported in the downstream direction 300. As a result, the second sheet 120 is peeled off from the first sheet 110.

[0034] The peeling mechanism 3 includes a stage 30 , a guide roller 40 and a post-peeling roller 41 .

[0035] (Guide roller) The guide roller 40 is in contact with the surface 31 of the stage 30 via the multilayer sheet 130. If the first sheet 110 is in a slack state before the peeling operation, when the peeling operation (movement of the stage 30) begins, the stage 30 moves until tension is applied between the post-peeling roller 41 and the peeling position 34, and then the peeling operation begins. In other words, the peeling position 34 is located away from the guide roller 40.

[0036] (vertical separation direction) The direction perpendicular to the surface 31 of the stage 30 and pointing away from the surface 31 is indicated by an arrow 320. The direction of the arrow 320 is called the perpendicular separation direction 320.

[0037] (Post-peeling roller) A post-peeling roller 41 is disposed in the vertical separation direction 320 of the stage 30. The peeled first sheet 110 is transported from the peeling position 34 to the post-peeling roller 41. The transport direction of the first sheet 110 after passing through the guide roller 40 is indicated by an arrow 403. The transport direction indicated by the arrow 403 is referred to as a third transport direction 403. The third transport direction 403 does not necessarily have to be parallel to the vertical separation direction 320.

[0038] The first sheet 110 transported to the post-peeling roller 41 is transported to the second tension release mechanism 22. The transport direction of the first sheet 110 after passing through the post-peeling roller 41 is indicated by an arrow 404. The transport direction indicated by the arrow 404 is referred to as the fourth transport direction 404. The transport direction 404 may be, for example, a direction perpendicular to the vertical separation direction 320 and directed toward the downstream direction 300.

[0039] (Stage movement) The stage 30 can move in a direction parallel to the surface 31 of the stage 30, along the downstream direction 300. The stage 30 can move back and forth. A double arrow 310 indicates the direction of the reciprocating movement. In the reciprocating movement direction 310, the direction toward the downstream direction 300 is called a first direction 311. In the reciprocating movement direction 310, the direction opposite to the downstream direction 300 is called a second direction 312.

[0040] The stage 30 can move with the second sheet 120 adsorbed to its surface 31. The second sheet 120 is peeled off from the first sheet 110 as the stage 30 moves in a first direction 311. The first sheet 110 and the second sheet 120 are transported in different directions as the stage 30 moves. As described above, the first sheet 110 is transported in the vertical separation direction 320. The second sheet 120, while adsorbed to the stage 30, is transported in the first direction 311 together with the stage 30. As a result, the second sheet 120 is peeled off from the first sheet 110.

[0041] The second sheet 120 peeled from the first sheet 110 is conveyed to the stacking mechanism 80. The stacking mechanism 80 will be described later.

[0042] (peel tension) The tension of the first sheet 110 in the peel region 12 is called the peel tension. The peel tension includes a first peel tension 201, a second peel tension 202, and a third peel tension 203.

[0043] The first peeling tension 201 is the tension of the first sheet 110 between the first tension separating mechanism 21 and the stage 30. The second peeling tension 202 is the tension of the first sheet 110 between the guide roller 40 and the post-peeling roller 41. The third peeling tension 203 is the tension of the first sheet 110 between the post-peeling roller 41 and the second tension separating mechanism 22.

[0044] When simply referring to peel tension, it means at least one of the first peel tension 201, the second peel tension 202 and the third peel tension 203.

[0045] The peeling tension can be measured, for example, by a tension sensor provided on the first tension release mechanism 21, the guide roller 40, the post-peeling roller 41, the second tension release mechanism 22, or a roller (not shown) that contacts the first sheet 110, or by a tension sensor provided separately from the roller.

[0046] The configuration of the peeling area 12 is not limited to the above example. In addition to the stage 30, the peeling area 12 may be provided with at least one of a second carrying-out mechanism and a mechanism for performing any processing on the second sheet 120 after the peeling step.

[0047] The second discharge mechanism is a mechanism for discharging the peeled second sheet 120 out of the peeling area 12. If the second sheet 120 is long, the second discharge mechanism may be a sheet handling mechanism such as a winding mechanism. If the second sheet 120 is strip-shaped, the second discharge mechanism may be a conveying mechanism such as a head or table that fixes and conveys the second sheet 120 by suction or the like. The second discharge mechanism may also be a mechanism that detects the position of the second sheet 120 and aligns it.

[0048] Examples of mechanisms for performing any processing on the second sheet 120 after the peeling step include a static elimination mechanism, a printing mechanism, a laser processing mechanism, and a joining mechanism for joining to any member.

[0049] (Export area) The first sheet 110 is transported from the peeling area 12 to the discharge area 13 via the second tension release mechanism 22. The first sheet 110 is transported in the direction of the arrow 405 and taken up by the take-up roller 23. The transport direction indicated by the arrow 405 is referred to as the fifth transport direction 405. The fifth transport direction 405 can be a direction along the downstream direction 300. The take-up roller 23 rotates in the direction of the arrow 406 and takes up the first sheet 110.

[0050] (Export tension) The tension of the first sheet 110 in the discharge area 13 is called discharge tension 204. When the tension applied to the first sheet 110 in the discharge area 13 changes, the tension applied at the position immediately after the first sheet 110 has passed through the second tension release mechanism 22 is called discharge tension 204.

[0051] The discharge tension 204 can be measured, for example, by a tension sensor provided on the second tension release mechanism 22, the winding roller 23, or a roller (not shown) that contacts the first sheet 110, or by a tension sensor provided separately from the roller.

[0052] The configuration of the discharge area 13 is not limited to the above example. The discharge area 13 may be provided with at least one of a sheet handling mechanism and a device that performs optional processing on the first sheet after the peeling process. Examples of the sheet handling mechanism include a winding mechanism, a tension control mechanism, and a compensator roll. Examples of the device that performs optional processing on the first sheet after the peeling process include a static elimination device, a cleaning device, a device that checks for or removes residue from the second sheet, and the like.

[0053] The maximum value of the discharge tension is, for example, 5N or more and 200N or less.

[0054] Above, the outline of the peeling device 1 has been explained for each region with reference to the configuration example shown in Fig. 1. Below, the main mechanisms of the peeling device 1 will be explained more generally by mechanism. (peeling mechanism) First, the peeling mechanism 3 will be described. The peeling mechanism 3 is disposed in the peeling region 12. The peeling mechanism 3 holds the second sheet 120 and includes a mechanism for moving the second sheet 120 relative to the first sheet 110 so that the second sheet 120 is separated from the first sheet 110. In this way, the peeling mechanism 3 separates the multilayer sheet 130 into the first sheet 110 and the second sheet 120. This operation is called the peeling operation. In this embodiment, the peeling mechanism 3 includes a stage 30. The peeling operation is mainly performed by the stage 30.

[0055] A specific example of the peeling operation will be described. The peeling mechanism 3 may include a holding mechanism for the second sheet 120. The holding mechanism for the second sheet 120 is a mechanism that holds the second sheet 120. The mechanism that holds the second sheet 120 may hold the second sheet 120 by suction or adhesion. Examples of the mechanism that holds the second sheet 120 are a stage or a roll. In this embodiment, the mechanism that holds the second sheet 120 is exemplified by a stage 30.

[0056] In the peeling operation, the stage 30 holds the second sheet 120 and moves relative to the first sheet 110 so that the second sheet 120 moves away from the first sheet 110. For example, the stage 30 holds the second sheet 120 and transports the second sheet 120 in a direction that moves the second sheet 120 away from the first sheet 110.

[0057] When the holding mechanism for second sheet 120 is a roll, second sheet 120 may be transported by rotating the roll.

[0058] The peeling mechanism 3 may further include a holding mechanism for the first sheet 110. The configuration of the holding mechanism for the first sheet 110 may be the same as the holding mechanism for the second sheet 120. The holding mechanism for the first sheet 110 may hold the first sheet 110 and transport the first sheet 110 in synchronization with the holding mechanism for the second sheet 120.

[0059] The angle formed between the conveying direction of first sheet 110 and the conveying direction of second sheet 120 immediately after peeling is called the peel angle. Figure 1 shows an example where the peel angle is approximately 90 degrees. However, the peel angle is not limited to 90 degrees.

[0060] In particular, it is preferable to move the first sheet 110 and the second sheet 120 relatively in a parallel direction based on the position where the second sheet 120 is about to be peeled from the first sheet 110, i.e., the peeling position 34. In other words, it is preferable to move the first sheet 110 and the second sheet 120 in parallel but opposite directions from the position where the second sheet 120 is to be peeled from the first sheet 110. In this case, the peeling angle of the first sheet 110 relative to the second sheet 120 approaches 180 degrees. Therefore, the force acting on the second sheet 120 in a direction perpendicular to the surface of the second sheet 120 during peeling is reduced. As a result, damage to the second sheet 120 during peeling can be suppressed.

[0061] In this example, the third transport direction 403 may be parallel to the surface 31 of the stage 30 and may be opposite to the downstream direction 300. That is, the third transport direction 403 may be parallel to the second direction 312 of the stage 30.

[0062] For example, the position where the holding mechanism for the second sheet 120, such as the stage 30, holds the second sheet 120 is not particularly limited as long as it is on the downstream side of the peeling position 34 in the downstream direction 300. It is preferable that the position where the holding mechanism for the second sheet 120 holds the second sheet 120 includes the peeling position 34 or is a position as close to the peeling position 34 as possible.

[0063] The second sheet 120 is not held by any other member between the position where the holding mechanism for the second sheet 120 holds the second sheet 120 and the peeling position 34. Therefore, tension is likely to be applied to the second sheet 120 during peeling. Therefore, it is preferable that the position where the holding mechanism for the second sheet 120 holds the second sheet 120 and the peeling position 34 are as close as possible. This shortens the section (length) of the second sheet 120 where tension is applied during peeling. As a result, damage to the second sheet 120 during peeling can be suppressed.

[0064] (peel speed) The speed at which the peeling between first sheet 110 and second sheet 120 progresses is called the peeling speed, and it is preferable that the peeling speed be 0.01 m / s or more and 5 m / s or less.

[0065] (First tension release mechanism) The first tension release mechanism 21 will now be described. The first tension release mechanism 21 is a mechanism that holds and transports the multilayer sheet 130. The first tension release mechanism 21 is disposed between the carry-in area 11 and the peeling area 12. The first tension release mechanism 21 can control the carry-in tension 200 applied to the first sheet 110 in the carry-in area 11 and the peeling tension applied to the first sheet 110 in the peeling area 12 to different values. The peeling tension here may be at least one of a first peeling tension 201, a second peeling tension 202, and a third peeling tension 203.

[0066] In this embodiment, the first tension release mechanism 21 is configured with an adsorption transport roll. An adsorption transport roll is a roll that can hold a sheet by the adsorption action of the roll surface. By configuring the first tension release mechanism 21 with an adsorption transport roll, the first tension release mechanism 21 can be configured with a single roll. Furthermore, when the first tension release mechanism 21 is configured with an adsorption transport roll, it is easy to increase the adsorption force of the roll by using an adsorption transport roll with a large diameter.

[0067] The first tension release mechanism 21 further has a conveying function. The conveying function is a function of conveying the multilayer sheet 130 from the carry-in area 11 to the peeling area 12. Specifically, the first tension release mechanism 21 conveys the multilayer sheet 130, for example, in the following manner. If the first tension release mechanism 21 is an adsorption conveying roll or a nip roll, the first tension release mechanism 21 conveys the multilayer sheet 130, for example, by rotating. If the first tension release mechanism 21 is a gripping feed mechanism such as a clip, the first tension release mechanism 21 conveys the multilayer sheet 130, for example, by performing a feed operation.

[0068] In addition, if the first tension release mechanism 21 does not perform the peeling tension control operation and does not transport the multilayer sheet 130 from the loading area 11 to the peeling area 12 at least while the peeling operation is being performed, the first tension release mechanism 21 does not have a transport function and may only hold the multilayer sheet 130.

[0069] (Second tension release mechanism) Next, the second tension release mechanism 22 will be described. The second tension release mechanism 22 is a mechanism that holds and transports the first sheet 110. Regarding the second tension release mechanism 22, differences from the first tension release mechanism 21 will be mainly described. The second tension release mechanism 22 is disposed between the peeling region 12 and the discharge region 13. The second tension release mechanism 22 can control the peel tension applied to the first sheet 110 in the peeling region 12 and the discharge tension 204 applied to the first sheet 110 in the discharge region 13 to different values. The peel tension here may be at least one of the first peel tension 201, the second peel tension 202, and the third peel tension 203.

[0070] Similar to the first tension releasing mechanism 21, the second tension releasing mechanism 22 can be an adsorption transport roll or a gripping feed mechanism.

[0071] The second tension release mechanism 22 further has a transport function of transporting the first sheet 110 from the peeling area 12 to the discharge area 13. The specific method of transporting the first sheet 110 can be the same as that of the first tension release mechanism 21.

[0072] In addition, if the second tension release mechanism 22 does not perform the peeling tension control operation and does not transport the first sheet 110 from the peeling area 12 to the discharge area 13 at least while the peeling operation is being performed, the second tension release mechanism 22 does not have a transport function and may only hold the first sheet 110.

[0073] (Peeling tension control mechanism) Next, the peel tension control mechanism 50 will be described. In the peeling device 1 of this embodiment, when the peeling mechanism 3 is not performing a peeling operation, the peel tension is controlled to be smaller than the reference value of the tension control range. This control is performed by the peel tension control mechanism 50. The peel tension control mechanism 50 controls at least one of the first tension release mechanism 21 and the second tension release mechanism 22 to perform the peel tension control operation. The reference value of the tension control range, i.e., the value below which the tension can be said to be "slack," can be set to, for example, between 0 N and 200 N.

[0074] (tension detection) The tension can be detected by the tension sensor described above. More specifically, the tension can be detected by at least one of the following methods: (1) A tension meter is placed in the peeling area 12 or elsewhere to measure the tension; (2) The sheet tension applied to at least one of the first tension release mechanism 21, the second tension release mechanism 22, the second sheet holding mechanism such as the stage 30, and other sheet handling mechanisms placed in the peeling area is measured. Here, the sheet handling mechanism includes equipment that comes into contact with the first sheet 110, such as the guide roller 40 and the post-peeling roller 41. In particular, the sheet handling mechanism refers to equipment that determines the transport state of the first sheet 110; (3) An optical detection means such as a camera or optical sensor detects the displacement state of the first sheet 110 in the peeling area 12, and converts the detected value into the applied tension or calculates the tension from that state. For example, if the first sheet 110 is slack, it is assumed that the tension is low. In another example, the detected value is the amount of displacement based on a position where a relatively high tension is applied to the first sheet 110. It is also possible to calculate the tension value so that it decreases as the amount of displacement increases.

[0075] (Peeling tension control operation) As an operation for controlling the peel tension (peeling tension control operation), for example, at least one of the following operations can be performed: (1) The first tension release mechanism 21 carries the multilayer sheet 130 from the carry-in area 11 to the peeling area 12. If the operation of carrying the multilayer sheet 130 from the carry-in area 11 to the peeling area 12 has already been performed, the speed of carrying the multilayer sheet 130 is increased. (2) The second tension release mechanism 22 reverses the conveyance of the first sheet 110 from the carry-out area 13 to the peeling area 12. If the operation of carrying the first sheet 110 from the peeling area 12 to the carry-out area 13 has already been performed, the speed of carrying the first sheet 110 is reduced. (3) By holding at least one of the first sheet 110 and the second sheet 120 in the peeling mechanism 3, when the tension of the first sheet 110 in the peeling region 12 is separated from the tension in other parts, the first sheet 110 held by the peeling mechanism 3 is transported in the peeling region 12 toward the peeling position 34. If the peeling mechanism 3 is already performing a transport operation, the transport speed is increased or decreased.

[0076] For example, when the peeling mechanism 3 includes a holding mechanism for the first sheet 110 and the holding mechanism for the first sheet 110 holds the first sheet 110, the tension of the first sheet 110 in the peeling region 12 is separated from the tension of the first sheet 110 in the feed region 11 or the tension of the first sheet 110 in the discharge region 13. In this case, by moving the holding mechanism for the first sheet 110 toward the peeling position 34, the first sheet 110 held by the peeling mechanism 3 is transported toward the peeling position 34. This makes it possible to control the tension of the first sheet 110.

[0077] (sagging state) In the peeling device 1 of this embodiment, when the peeling mechanism 3 is not performing the peeling operation, i.e., before the peeling mechanism 3 performs the peeling operation, the peeling tension is smaller than a predetermined value. Therefore, the multilayer sheet 130 is in a slack state between the first tension release mechanism 21 and the stage 30. The first sheet 110 is also in a slack state between the guide roller 40 and the post-peeling roller 41 and between the post-peeling roller 41 and the second tension release mechanism 22. Conversely, a slack state is a state in which the peeling tension is smaller than the predetermined value. In other words, the predetermined value is the reference value of the tension control range described above.

[0078] (distance between contact points and sheet length between contact points) The slack state refers to, for example, the following state: The components that come into contact with the sheet in the conveying area 10, such as rollers and stages, are defined as contact objects. The points where the contact objects and the sheet come into contact are defined as contact points. The distance between two adjacent contact points is defined as the inter-contact point distance. The length of the sheet between the two contact points is defined as the inter-contact point sheet length. A state in which the inter-contact point sheet length is equal to or greater than a predetermined multiple of the inter-contact point distance can be defined as a slack state.

[0079] Alternatively, the slack state can be determined based on the tension of the sheet, in which case, for example, if the tension of the sheet is equal to or less than a predetermined value, it is determined that the sheet is slack.

[0080] (Second embodiment) A second embodiment of the present invention will be described with reference to Fig. 8. Fig. 8 is a diagram showing a schematic configuration of a stack peeling device 1 according to the second embodiment of the present invention. The following mainly describes the differences between the second embodiment and the first embodiment. Items not specifically described for the second embodiment can be the same as those for the first embodiment.

[0081] The second embodiment differs from the first embodiment in the configurations of the first tension disconnecting mechanism 21 and the second tension disconnecting mechanism 22. In the first embodiment, the first tension disconnecting mechanism 21 and the second tension disconnecting mechanism 22 were both configured as suction transport rolls. As described above, the first tension disconnecting mechanism 21 and the second tension disconnecting mechanism 22 are not limited to being suction transport rolls. The first tension disconnecting mechanism 21 and the second tension disconnecting mechanism 22 may be, for example, nip rolls. In the second embodiment, the first tension disconnecting mechanism 21 and the second tension disconnecting mechanism 22 are both configured as nip rolls.

[0082] When the first tension releasing mechanism 21 is configured with nip rolls, as shown in Fig. 8, the first tension releasing mechanism 21 includes a first nip roll 2101 and a second nip roll 2102. In the first tension releasing mechanism 21, the multilayer sheet 130 is sandwiched between the first nip roll 2101 and the second nip roll 2102, and the conveying speed is adjusted, thereby adjusting the tension of the multilayer sheet 130.

[0083] Similarly, when the second tension disconnecting mechanism 22 is configured with nip rolls, the second tension disconnecting mechanism 22 includes a first nip roll 2201 and a second nip roll 2202. In the second tension disconnecting mechanism 22, the first sheet 110 is sandwiched between the first nip roll 2201 and the second nip roll 2202, and the conveying speed thereof is adjusted, thereby adjusting the tension of the first sheet 110.

[0084] In the second embodiment, the film conveying speed is adjusted by nip rolls. This allows for more precise tension adjustment. Furthermore, there is no need to place a roller, such as the auxiliary roller 28, upstream of the tension release mechanism. This is because the film conveying speed can be adjusted by nipping the sheet between two rollers, even if the contact length between the rollers included in the tension release mechanism and the sheet is short.

[0085] The first tension release mechanism 21 and the second tension release mechanism 22 are not limited to being configured with the suction transport roll described in the first embodiment and the nip roll described in the second embodiment. The first tension release mechanism 21 and the second tension release mechanism 22 can be configured with a roll that holds the sheet by at least one of the functions of suction and gripping.

[0086] (Third embodiment) Next, a stack peeling device 100 will be described as a third embodiment of the present invention. As described above, the stack peeling device 100 is a device in which the peeling device 1 (first embodiment) is further equipped with a stacking mechanism 80. In the following explanation, the stacking mechanism 80 will be mainly described for the third embodiment.

[0087] (Stacking mechanism) The stacking mechanism 80 is a mechanism for stacking the second sheets 120 that have been peeled from the first sheets 110. The stacking mechanism 80 may press the stacked second sheets 120 together.

[0088] 1, the stacking mechanism 80 includes at least a stacking table 81. The peeled second sheet 120 is stacked on a surface 82 of the stacking table 81. The surface 82 of the stacking table 81 is the surface of the stacking table 81 that faces the surface 31 of the stage 30.

[0089] Stage 30 moves in first direction 311 with second sheet 120 adsorbed to its surface 31. Stage 30 moves to a position opposite stacking table 81.

[0090] The stage 30 can move back and forth in the direction indicated by arrow 340 at a position facing the stacking table 81. This reciprocating movement direction 340 can be parallel to the vertical separation direction 320. In the reciprocating movement direction 340, the direction in which the stage 30 approaches the stacking table 81 is called a third direction 341. In the reciprocating movement direction 340, the direction in which the stage 30 moves away from the stacking table 81 is called a fourth direction 342.

[0091] After moving to a position facing the stacking table 81, the stage 30 moves in a third direction 341. Then, the stage 30 stacks the second sheet 120 that is adsorbed to the surface 31 of the stage 30 onto the surface 82 of the stacking table 81 or onto the second sheet 120 that has already been stacked on the surface 82 of the stacking table 81. After stacking the second sheet 120, the stage 30 may further press the second sheet 120.

[0092] By repeating this process of stacking the second sheets 120, a sheet stack 140 is formed on the surface 82 of the stacking table 81. The sheet stack 140 is a stack formed by stacking a plurality of second sheets 120.

[0093] Thereafter, the stage 30 moves in the fourth direction 342. The stage 30 continues to move in the second direction 312. This allows the stage 30 to move on to the next operation for peeling the second sheet 120.

[0094] 1, for the purpose of explanation, the stage 30 and the stacking mechanism 80 are illustrated in an enlarged scale. The stacking mechanism 80 is preferably disposed in the peeling region 12.

[0095] The configuration of the stacking mechanism 80 is not limited to the above example. For example, stacking may be performed as part of a stacking process in which any number of non-conductive material layers with internal electrode material layers and second sheets 120 without internal electrode material layers are stacked on the surface of the support in any order to form a desired laminate.

[0096] Furthermore, regardless of the presence or absence of an internal electrode material layer, the stacking of the second sheet 120 can include the following two cases: (1) A case in which the second sheet 120 is peeled off from the first sheet 110 in advance and then stacked; (2) A case in which the second sheet 120 formed on the surface of the first sheet 110 is stacked on a support or another second sheet 120, and then only the first sheet 110 is peeled off. Furthermore, the initial second sheet 120 may be formed by using the first sheet 110 as at least the surface of the support without peeling off the first sheet 110.

[0097] Next, other examples of the lamination method will be described. The method of laminating the second sheet 120 is not limited to the method shown in FIG. 1. Other methods include, for example, the following method. That is, the second sheet 120 is held on the holding surface of the head and stacked on the surface of the support or on another second sheet 120. After stacking, the second sheet 120 is pressed with the head as is, and then the holding of the second sheet 120 is released and only the head is moved. Alternatively, the holding of the second sheet 120 is released first and only the head is moved, and then the second sheet 120 is pressed with a pressure plate.

[0098] If at least one of the holding surface of the head and the support is curved, the second sheet 120 may be continuously stacked in line contact. If at least one of the holding surface of the head and the pressure plate is curved, the pressure plate may be continuously pressed in line contact.

[0099] When the support is in an endless continuous shape such as a roll, drum, or belt, the long second sheet 120 may be wound and continuously stacked. Furthermore, a pressure plate in an endless continuous shape such as a roll, drum, or belt may be used to synchronously contact the support and continuously pressure bond it.

[0100] The temperature during compression bonding can be, for example, 60° C. or higher and 90° C. or lower, and the maximum pressure during compression bonding can be, for example, 1 MPa or higher and 200 MPa or lower.

[0101] An example of the peeling steps will be described below in order with reference to the drawings. (Multi-layer sheet delivery and positioning) 2 is a diagram showing the loading and positioning of the multilayer sheet 130. The multilayer sheet 130 unwound from the unwinding roller 20 is transported to the peeling area 12 and positioned in the peeling mechanism 3. The peeling mechanism 3 includes a stage 30 and a delivery table 32. The stage 30 and the delivery table 32 face each other with the multilayer sheet 130 sandwiched between them. The first sheet 110 of the multilayer sheet 130 faces the delivery table 32, and the second sheet 120 faces the stage 30.

[0102] 2 shows an example in which the second sheet 120 is a strip-shaped sheet. The multi-layer sheet 130 is positioned so that the second sheet 120 is located between the delivery table 32 and the stage 30.

[0103] (Stage holds multi-layer sheet) 3 is a diagram showing a state in which stage 30 holds multilayer sheet 130. Arrow 420 shown in FIG. 3 indicates the same direction as vertical separation direction 320 described above. Arrow 421 indicates the opposite direction to arrow 420.

[0104] Stage 30 moves in the direction of arrow 420. Delivery table 32 moves in the direction of arrow 421. As stage 30 and delivery table 32 move, multilayer sheet 130 is sandwiched between stage 30 and delivery table 32.

[0105] The stage 30 is also provided with a suction device that can suck from the surface 31 in the direction indicated by the arrow 440 .

[0106] The second sheet 120 is attracted to the surface 31 of the stage 30 with the multilayer sheet 130 sandwiched between the stage 30 and the delivery table 32. The second sheet 120 is then held on the surface 31 of the stage 30.

[0107] (The delivery table rises) 4 is a diagram showing the state in which delivery table 32 is rising. Arrow 422 shown in FIG. 4 is the same direction as vertical separation direction 320. After second sheet 120 is held on surface 31 of stage 30, delivery table 32 moves in the direction of arrow 422. As delivery table 32 and stage 30 separate, stage 30 becomes movable.

[0108] (peel begins) 5 shows the state before peeling begins. After table 32 rises, stage 30 moves in the direction of arrow 311. The direction of arrow 311 (first direction) can be the same as downstream direction 300 described above. After end 33 of stage 30 in downstream direction 300 reaches guide roller 40, multilayer sheet 130 and first sheet 110 are slackened.

[0109] As described above, the peel tension control mechanism 50 controls at least one of the first tension release mechanism 21 and the second tension release mechanism 22 to perform a peel tension control operation. The peel tension control operation by the peel tension control mechanism 50 causes the multilayer sheet 130 and the first sheet 110 to sag. The sheet can be made to sag by increasing or decreasing the sheet conveying speed.

[0110] The first peeling tension 201, which is the tension of the multilayer sheet 130 between the first contact point 361, which is the contact point in the first tension releasing mechanism 21, and the second contact point 362, which is the contact point in the stage 30, is smaller than the reference value of the tension control range. In addition, the first peeling tension 201 is 0.1% or more and less than 100% of the carry-in tension 200 or the carry-out tension 204.

[0111] The distance between the first contact point 361 and the second contact point 362 is defined as a first inter-contact point distance 371. The length of the multilayer sheet 130 between the first contact point 361 and the second contact point 362 is defined as a first inter-contact point sheet length 381. The first inter-contact point sheet length 381 is longer than the first inter-contact point distance 371.

[0112] The second peeling tension 202, which is the tension of the first sheet 110 between the third contact point 363, which is the contact point on the guide roller 40, and the fourth contact point 364, which is the contact point on the post-peeling roller 41, is smaller than the reference value of the tension control range. In addition, the second peeling tension 202 is 0.1% or more and less than 100% of the carry-in tension 200 or the carry-out tension 204.

[0113] The distance between the third contact point 363 and the fourth contact point 364 is defined as a second inter-contact point distance 372. The length of the first sheet 110 between the third contact point 363 and the fourth contact point 364 is defined as a second inter-contact point sheet length 382. The second inter-contact point sheet length 382 is longer than the second inter-contact point distance 372.

[0114] 5 , the first sheet 110 does not necessarily have to be slack between the fifth contact point 365, which is the contact point with the post-peeling roller 41, and the sixth contact point 366, which is the contact point with the second tension release mechanism 22. The third peeling tension 203, which is the tension of the first sheet 110 between the fifth contact point 365 and the sixth contact point 366, may be the same as the reference value of the tension control range or may be greater than the reference value of the tension control range. The third peeling tension 203 may also be the same as the carry-in tension 200 or the carry-out tension 204.

[0115] The distance between the fifth contact point 365 and the sixth contact point 366 is defined as a third inter-contact point distance 373. The length of the first sheet 110 between the fifth contact point 365 and the sixth contact point 366 is defined as a third inter-contact point sheet length 383. The third inter-contact point sheet length 383 may be equal to the third inter-contact point distance 373.

[0116] In addition, sagging the multilayer sheet 130 between the first contact point 361 and the second contact point 362 and sagging the first sheet 110 between the third contact point 363 and the fourth contact point 364 may be performed in a state where the multilayer sheet 130 is sandwiched between the stage 30 and the transfer table 32, as previously described based on Figure 3.

[0117] (Progression of peeling) 6 is a diagram showing the state in which peeling is progressing. Stage 30 continues to move in first direction 311. First sheet 110 is also transported in synchronization with the movement of stage 30. First peel tension 201 and second peel tension 202 remain low, as in the state shown in FIG.

[0118] This reduces the shear force 205 acting on the multilayer sheet 130 between the peel position 34 and the end 35 of the stage opposite the downstream direction 300. This is because the first peel tension 201 and the second peel tension 202 are both low. It is preferable that the first peel tension 201 and the second peel tension 202 are both close to zero.

[0119] As the peeling progresses, it is preferable to also slacken the first sheet 110 between the fifth contact point 365 and the sixth contact point 366. In other words, it is preferable that the third peel tension 203 is smaller than the reference value of the tension control range. It is also preferable that the third peel tension 203 is 0.1% or more and less than 100% of the carry-in tension 200 or the carry-out tension 204. It is also preferable that the sheet length 383 between the third contact points / the distance 373 between the third contact points is 1.1 or more. This makes it possible to more reliably suppress the shear force 205.

[0120] (shear force) Shear force 205 refers to a tensile force acting in the longitudinal direction of multilayer sheet 130. For example, a tensile force acts on first sheet 110 on surface 31 of stage 30, more specifically, on first sheet 110 between peeling position 34 and end 35 of stage 30 opposite downstream direction 300, in a direction parallel to the direction of movement of stage 30, for example, parallel to first direction 311. This is shear force 205.

[0121] Shear force 205 is likely to occur when there is a difference between first peel tension 201 and second peel tension 202. For example, when first peel tension 201 and second peel tension 202 are different, a force corresponding to the difference between first peel tension 201 and second peel tension 202 is applied to multilayer sheet 130 as shear force 205.

[0122] In the peeling device 1 of this embodiment, the first peeling tension 201 and the second peeling tension 202 are both close to zero. Therefore, the difference between the first peeling tension 201 and the second peeling tension 202 is close to zero. Therefore, the force 205 in the shear direction is close to zero.

[0123] (End of peeling) 7 shows the state after peeling is completed. When stage 30 further advances in first direction 311, second sheet 120 adsorbed to surface 31 of stage 30 is entirely peeled off from first sheet 110. This completes peeling.

[0124] It is preferable to maintain the same peeling speed even when the peeling reaches the end. That is, the movement of the stage 30 in the first direction 311 is not stopped at the end of the peeling, but is continued at the same speed. By moving the stage 30 in this manner, a release operation to release the contact between the stage 30 and the guide roller 40 is not required. As a result, damage to the sheet can be reduced.

[0125] 9 is a diagram showing the state in which the second sheets 120 are stacked. The peeled second sheets 120 are stacked by the stacking mechanism 80.

[0126] In the peeling device 1 of this embodiment, the sheet is slack as shown in Fig. 6 etc. Therefore, unlike conventional peeling devices, shear force 205 is less likely to be applied to the multilayer sheet 130. As a result, the multilayer sheet 130 is less likely to be damaged.

[0127] (Lamination of the second sheet) Returning to Fig. 9, the lamination of second sheet 120 will be described. As previously described with reference to Fig. 1, after peeling of second sheet 120 is completed, stage 30 moves in first direction 311 to a position facing lamination table 81. The position of stage 30 in reciprocating movement direction 340 when stage 30 has moved in first direction 311 to a position facing lamination table 81 is defined as first position 85.

[0128] The stage 30 moves from the first position 85 in the third direction 341. Then, the second sheet 120 that has been adsorbed to the surface 31 of the stage 30 is sequentially stacked on the surface 82 of the stacking table 81. The position of the stage 30 in this state in the reciprocating movement direction 340 is defined as a second position 86.

[0129] After stacking the second sheet 120, the stage 30 moves in the fourth direction 342 from the second position 86 to the first position 85. In this manner, the stage 30 moves in the reciprocating direction 340 from the first position 85 to the second position 86.

[0130] After moving to the first position 85, the stage 30 moves in the second direction 312, and the series of operations is completed.

[0131] Although the present invention has been described above as an embodiment, it is not limited to the above-described embodiment, and various changes, modifications, and combinations are possible.

[0132] For example, the second sheet 120 peeled from the first sheet 110 can be stacked without using the stacking mechanism 80. In the step of holding the multilayer sheet 130 on the stage 30 described with reference to FIG. 3 , the peeled second sheet 120 can be stacked on the stage 30, thereby stacking the second sheets 120 without using the stacking mechanism 80. In this case, the second sheet 120 that has already been peeled and is on the stage 30 is brought into close contact with the second sheet 120 that is about to be peeled. At this time, pressure may be applied as necessary. The second sheet 120 that is about to be peeled can be bonded to the second sheet 120 that has already been peeled due to the adhesive force between the second sheets 120. Then, the first sheet 110 is peeled from the second sheet 120. By repeating this procedure, the peeled second sheets 120 can be stacked on the stage 30.

[0133] In the peeling device 1 of this embodiment, when the second sheet 120 is a strip-shaped sheet, force is applied to the leading edge of the sheet to be peeled, i.e., the peel position 34 of the sheet, but no force is applied to the unpeeled portion and the trailing edge, i.e., the downstream portion. To avoid applying force to the unpeeled portion, the feed amount of the rollers in the sheet conveying system is adjusted during peeling to sag the sheet. By sagging the sheet, it can be peeled without applying force such as shear force due to tension differences to the unpeeled portion and the trailing edge.

[0134] It is also preferable to maintain the same peeling speed even when the peeling reaches the end. By maintaining the peeling speed, damage to the sheet can be suppressed. The stage 30 is moved at the same speed in the first direction 311 without stopping at the end of the peeling. By moving the stage 30 without stopping, it is not necessary to perform a release operation in the normal direction to the surface of the transfer roller or in the direction perpendicular to the surface 31 of the stage 30 to release the contact between the transfer roller or stage and the guide roller. As a result, damage to the sheet can be reduced.

[0135] Furthermore, since the peeling tension when the peeling mechanism 3 is not performing the peeling operation, i.e., the peeling tension before the peeling mechanism performs the peeling operation, is smaller than the reference value of the tension control width, when the second sheet 120 is stacked on the stacking table 81, the second sheet 120 is prevented from floating away from other second sheets 120 and the like.

[0136] <1> A peeling device having a transport area including: a carry-in area into which a multilayer sheet including a long, sheet-like first sheet and a second sheet attached to a surface of the first sheet is carried; a peeling area into which the carried-in multilayer sheet is peeled into the first sheet and the second sheet; and an unloading area into which the first sheet is unloaded after the peeling, a first tension separation mechanism disposed between the carry-in area and the peeling area, which controls a carry-in tension applied to the first sheet in the carry-in area and a peeling tension applied to the first sheet in the peeling area to different values; a second tension separation mechanism disposed between the peeling region and the discharge region, which controls the peel tension and a discharge tension applied to the first sheet in the discharge region to different values; a peeling mechanism that is disposed in the peeling region, holds the second sheet, and moves the second sheet relative to the first sheet so as to separate it from the first sheet, thereby peeling the multilayer sheet into the first sheet and the second sheet; a peel tension control mechanism that detects the peel tension and controls at least one of the first tension disconnecting mechanism and the second tension disconnecting mechanism to perform a peel tension control operation so that the peel tension becomes smaller than a reference value of a tension control width; Peeling device. <2> the peeling mechanism moves the first sheet and the second sheet in parallel and opposite directions from a position where the second sheet is peeled from the first sheet in the peeling operation; <1> The peeling device according to claim 1. <3> the first tension release mechanism holds and transports the multi-layer sheet; <1> or <2> The peeling device according to claim 1. <4> the second tension release mechanism holds and transports the first sheet; <1> or <2> The peeling device according to claim 1. <5> The peel tension is 0.1% or more and less than 100% of at least one of the carry-in tension and the carry-out tension. <1> from <3> 10. A peeling device according to any one of the preceding items. <6> <1> or <2> a peeling device according to the above; a stacking mechanism that stacks and presses the second sheet onto the sheet stack, the stacking mechanism is disposed in the peeling region; Stack peeling device. <7> A peeling method for peeling a multilayer sheet including a long, sheet-like first sheet and a second sheet attached to a surface of the first sheet into the first sheet and the second sheet, comprising: When the region where the multilayer sheet is peeled into the first sheet and the second sheet is defined as a peel region, a step of controlling a feed tension applied to the first sheet before being transported to the peeling region and a peeling tension applied to the first sheet in the peeling region to different values; controlling the peeling tension and a conveying tension applied to the first sheet after being conveyed from the peeling region to different values, The peel tension is smaller than the reference value of the tension control range. Peeling method. <8> The peel tension is 0.1% or more and less than 100% of the carry-in tension or the carry-out tension. <7> The peeling method described in [Explanation of symbols]

[0137] 1 Peeling device 3 Peeling mechanism 10 Conveying Area 11 Loading area 12 Peeling area 13 Export area 20 Unwinding roller 21 First tension release mechanism 22 Second tension release mechanism 28 Auxiliary roller 23 Winding roller 30 stages 40 Guide roller 41 Post-peeling roller 50 Peeling tension control mechanism 80 Stacking mechanism 81 Stacking Table

Claims

1. A peeling device having a transport area including: a carry-in area into which a multilayer sheet including a long, sheet-like first sheet and a second sheet attached to a surface of the first sheet is carried in; a peeling area into which the carried-in multilayer sheet is peeled into the first sheet and the second sheet; and an unloading area into which the first sheet is unloaded after the peeling, a first tension separation mechanism disposed between the carry-in area and the peeling area, which controls a carry-in tension applied to the first sheet in the carry-in area and a peeling tension applied to the first sheet in the peeling area to different values; a second tension separation mechanism disposed between the peeling region and the discharge region, and configured to control the peel tension and a discharge tension applied to the first sheet in the discharge region to different values; a peeling mechanism that is disposed in the peeling region, holds the second sheet, and moves the second sheet relative to the first sheet so as to separate it from the first sheet, thereby peeling the multilayer sheet into the first sheet and the second sheet; a peel tension control mechanism that detects the peel tension and controls at least one of the first tension disconnecting mechanism and the second tension disconnecting mechanism to perform a peel tension control operation so that the peel tension becomes smaller than a reference value of a tension control width. Peeling device.

2. the peeling mechanism moves the first sheet and the second sheet in parallel and opposite directions from a position where the second sheet is peeled from the first sheet during the peeling operation; The peeling device according to claim 1 .

3. the first tension release mechanism holds and transports the multi-layer sheet; The peeling device according to claim 1 or 2.

4. the second tension release mechanism holds and transports the first sheet; The peeling device according to claim 1 or 2.

5. the peel tension is 0.1% or more and less than 100% of at least one of the carry-in tension and the carry-out tension; The peeling device according to claim 1 or 2.

6. The peeling device according to claim 1 or 2; a stacking mechanism that stacks and presses the second sheet onto the sheet stack, the stacking mechanism is disposed in the peeling region; Stack peeling device.

7. A peeling method for peeling a multilayer sheet including a long, sheet-like first sheet and a second sheet attached to a surface of the first sheet into the first sheet and the second sheet, the method comprising: When the region where the multilayer sheet is peeled into the first sheet and the second sheet is defined as a peel region, a step of controlling a feed tension applied to the first sheet before being transported to the peeling region and a peeling tension applied to the first sheet in the peeling region to different values; controlling the peeling tension and a discharge tension applied to the first sheet after being transported from the peeling region to different values, The peel tension is smaller than the reference value of the tension control range. Peeling method.

8. The peel tension is 0.1% or more and less than 100% of the carry-in tension or the carry-out tension. The peeling method according to claim 7.

Images