JP2015177011A - Sheet adhering device and adhering method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet adhering device and an adhering method that enables reduction of a risk that dust infiltrates into the gap between a double-side adhesive sheet and a second adherend.SOLUTION: A sheet adhering device 10 has lead-out means 20 for temporarily fixing a band-shaped first peeling sheet RL1 to a first contact face SA1, peeling a band-shaped second peeling sheet RL2 from an original fabric RS in which the band-shaped second peeling sheet RL2 is temporarily fixed on a second contact face SA2, leading out a double-side adhesive sheet AS while the first peeling sheet RL1 is temporarily fixed to the first contact face SA1, and folding back the first peeling sheet RL1 in both the directions to the opposite side of a temporarily fixed face AP1, adhering means 30 for adhesively attaching the double-side adhesive sheet AS from the first peeling sheet RL1 side to a first adherend WK1, press means 40 for pressing a second adherend WK2 against the double-side adhesive sheet AS, and pull-out means 50 for pulling out the first peeling sheet RL1 from the gap between the double-side adhesive sheet AS and the second adherend WK2.

Description

  The present invention relates to a sheet sticking apparatus and a sticking method for sticking an adhesive sheet to an adherend.

Conventionally, a sheet sticking device for sticking a first adherend and a second adherend via a double-sided adhesive sheet is known (see, for example, Patent Document 1).
The sheet sticking device described in Patent Document 1 is a sticking roller for pressing and sticking a double-sided adhesive tape (double-sided adhesive sheet) having a separator (release sheet) temporarily attached to one surface to a wafer (first adherend). A separator collecting unit that peels and collects the separator from the double-sided adhesive tape affixed to the wafer, and a plurality of support substrates (second adherends) that can hold the support substrate (second adherend) at positions facing the wafer across the double-sided adhesive tape A locking claw and a pressing member that presses the support substrate against the wafer are provided, and the wafer and the support substrate can be attached via a double-sided adhesive tape.

JP 2008-172159 A

However, the conventional sheet sticking apparatus described in Patent Document 1 sticks the second adherend to the double-sided adhesive sheet after peeling the release sheet from the double-sided adhesive sheet stuck to the first adherend. Therefore, there is an inconvenience that the risk that dust is mixed between the double-sided adhesive sheet and the second adherend increases.
Further, since the second adherend is curved and attached to the adhesive sheet so that air does not enter between the double-sided adhesive sheet and the second adherend, the stress applied to the second adherend increases. There is an inconvenience.

The objective of this invention is providing the sheet sticking apparatus and sticking method which can reduce the risk that dust will mix between a double-sided adhesive sheet and a 2nd to-be-adhered body.
Another object of the present invention is to provide a sheet sticking device and a sticking method capable of reducing stress applied to the second adherend.

  The sheet sticking device of the present invention sticks the first adherend and the second adherend through a double-sided adhesive sheet in which one surface is a first adhesive surface and the other surface is a second adhesive surface. A sheet sticking device that performs the process from an original fabric in which a belt-like first release sheet is temporarily attached to the first adhesive surface of the double-sided adhesive sheet, and the belt-like second release sheet is temporarily attached to the second adhesive surface. While peeling the second release sheet, the double-sided adhesive sheet is fed out while the first release sheet is temporarily attached to the first adhesive surface, and is opposite to the temporary attachment surface temporarily attached to the first adhesive surface. A feeding unit that folds the first release sheet in the surface direction and supplies the double-sided adhesive sheet, and presses the double-sided adhesive sheet supplied by the feeding unit from the first release sheet side to the first adherend. Pasting means for pasting, and the second adherend is folded back. The first release sheet is pressed between the second adherend and the double-sided adhesive sheet through the first release sheet folded between the second adherend and the double-sided adhesive sheet with the first release sheet sandwiched therebetween. It has a drawing means for pulling out the sheet.

  The sheet sticking device of the present invention sticks the first adherend and the second adherend through a double-sided adhesive sheet in which one surface is a first adhesive surface and the other surface is a second adhesive surface. A sheet sticking device that performs the process from an original fabric in which a belt-like first release sheet is temporarily attached to the first adhesive surface of the double-sided adhesive sheet, and the belt-like second release sheet is temporarily attached to the second adhesive surface. While peeling the second release sheet, the double-sided adhesive sheet is fed out while the first release sheet is temporarily attached to the first adhesive surface, and is opposite to the temporary attachment surface temporarily attached to the first adhesive surface. A feeding unit that folds the first release sheet in the surface direction and supplies the double-sided adhesive sheet, and presses the double-sided adhesive sheet supplied by the feeding unit from the first release sheet side to the first adherend. Between the pasting means for pasting and the folded first release sheet. The pressing means for pressing the second adherend against the double-sided adhesive sheet, and the first release sheet folded back from between the second adherend and the double-sided adhesive sheet. And a pulling means for pulling out the release sheet.

  In the sheet sticking apparatus of the present invention, the pulling means is provided so as to be able to partially peel the first release sheet from the first adhesive surface, and the first adhesive surface exposed by the partial peeling. It is preferable that the second adherend is pressed and pasted on a part of the first adhering member by the pressing means and then the first release sheet is pulled out.

  In the sheet sticking method of the present invention, a first adherend and a second adherend are pasted via a double-sided adhesive sheet in which one surface is a first adhesive surface and the other surface is a second adhesive surface. The sheet sticking method is a method in which the belt-like first release sheet is temporarily attached to the first adhesive surface of the double-sided adhesive sheet, and the belt-like second release sheet is temporarily attached to the second adhesive surface. While peeling the second release sheet, the double-sided adhesive sheet is fed out while the first release sheet is temporarily attached to the first adhesive surface, and is opposite to the temporary attachment surface temporarily attached to the first adhesive surface. Folding the first release sheet in the surface direction and supplying the double-sided adhesive sheet; and pressing and feeding the supplied double-sided adhesive sheet to the first adherend from the first release sheet side; The second adherend is sandwiched between the folded first release sheets. Pressing the double-sided adhesive sheet, and pulling out the first release sheet through the folded first release sheet from between the second adherend and the double-sided adhesive sheet. Features.

  According to the present invention as described above, the first and second adherends are drawn by pulling out the first release sheet from between the adhesive sheet and the second adherend adhered to the first adherend. Therefore, the risk of dust being mixed between the double-sided adhesive sheet and the second adherend can be reduced. Further, since the second adherend can be prevented from being bent as much as possible, the stress applied to the second adherend can be reduced.

  Further, if the first release sheet is partially peeled by the pulling means, a part of the exposed first adhesive surface can be attached to the second adherend, so when pulling out the first release sheet, It is possible to prevent the second adherend from being displaced with respect to the first adherend.

The side view of the sheet sticking apparatus which concerns on one Embodiment of this invention. Operation | movement explanatory drawing of a sheet sticking apparatus.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, the X axis, the Y axis, and the Z axis are orthogonal to each other, the X axis and the Y axis are axes within a predetermined plane, and the Z axis is an axis orthogonal to the predetermined plane. And Furthermore, in the present embodiment, when viewed from the near side of FIG. 1 parallel to the Y axis, when indicating the direction, “up” is the arrow direction of the Z axis, “down” is the opposite direction, “ “Left” is the X-axis arrow direction, “Right” is the opposite direction, “Front” is the front direction orthogonal to the Y-axis paper surface, and “Back” is the opposite direction.

  In FIG. 1, the sheet sticking apparatus 10 includes a first adherend WK1 and a second adherend via a double-sided adhesive sheet AS having one surface as a first adhesive surface SA1 and the other surface as a second adhesive surface SA2. A device for affixing the adherend WK2, a belt-like first release sheet RL1 is temporarily attached to a first adhesive surface SA1 of a double-sided adhesive sheet AS, and a belt-like second release sheet RL2 is attached to a second adhesive surface SA2. The second release sheet RL2 is peeled off from the temporarily-attached original fabric RS, and the double-sided adhesive sheet AS is fed out while the first release sheet RL1 is temporarily attached to the first adhesive surface SA1. The feeding means 20 that folds the first release sheet RL1 in the surface direction opposite to the temporarily attached temporary attachment surface AP1 and supplies the double-sided adhesive sheet AS, and the double-sided adhesive sheet AS supplied by the feeding means 20 is the first. Release sheet RL The second adherend WK2 is pressed against the double-sided adhesive sheet AS with the pressing roller 30 as a sticking means for pressing and sticking to the first adherend WK1 from the side and the folded first release sheet RL1 sandwiched therebetween And a pulling means 50 for pulling out the first release sheet RL1 through the first release sheet RL1 folded back from between the second adherend WK2 and the double-sided adhesive sheet AS. The first adherend support means 60 for supporting the adherend WK1 and the second adherend supply means 70 for supplying the second adherend WK2 are disposed in the vicinity.

  The feeding means 20 folds the second release sheet RL2 and peels the double-sided adhesive sheet AS from the support roller 21 that supports the original fabric RS, a plurality of guide rollers 22 that guide the original fabric RS, and the second release sheet RL2. A pinch roller 25 for sandwiching the second release sheet RL2 between the release plate 23 to be driven and a driving roller 24 driven by a rotation motor 24A as a drive device, and a collection roller 26 for collecting the second release sheet RL2. I have.

  The pressing means 40 is supported by a linear motion motor 42 supported by a slider 41A of a linear motor 41 as a drive device, and a lower surface of a base plate 44 supported by an output shaft 42A of the linear motion motor 42, and is also made of rubber or resin. Or a support member 45 having a support surface 45A and an electrostatic chuck 46 capable of attracting and holding the double-sided adhesive sheet AS on the support surface 45A by Coulomb force.

  The pulling means 50 includes a driving roller 51 driven by a rotating motor 51A as a driving device, a pinch roller 52 that sandwiches the first release sheet RL1 between the driving roller 51, and a rotating motor 53A as a driving device. A recovery roller 53 that is driven and collects the first release sheet RL1 and a release stopper 54 as a release suppression unit that suppresses the release of the first release sheet RL1 from the double-sided adhesive sheet AS are provided.

  The first adherend support means 60 is supported by a slider 61A of a linear motor 61 serving as a driving device, and a support surface 62A capable of attracting and holding the first adherend WK1 by a decompression means (not shown) such as a decompression pump or a vacuum ejector. The table 62 having the above is provided.

  The second adherend supply means 70 is formed in a cylindrical shape having a closed upper opening and a lower part, and can accommodate a plurality of second adherends WK2 and a drive device provided in the accommodation means 71. The table 73 is supported by the output shaft 72A of the linear motor 72 and can place the second adherend WK2, and the optical sensor or contact sensor for detecting the upper surface of the second adherend WK2 located at the top. And detecting means 74 comprising imaging means such as a camera or a camera.

In the above sheet sticking apparatus 10, the procedure for sticking the first adherend WK1 and the second adherend WK2 through the double-sided adhesive sheet AS will be described.
First, after an operator sets the original fabric RS as shown by a solid line in FIG. 1 and stores a plurality of second adherends WK2 on the table 73, input means (not shown) such as an operation panel or a personal computer. When the operation start signal is input via the, the feeding means 20 and the pulling means 50 drive the rotation motors 24A, 51A, 53A to feed out the original fabric RS. Then, when a detection means (not shown) such as an optical sensor or an imaging means detects that the double-sided adhesive sheet AS located on the peeling plate 23 has reached a predetermined position, the feeding means 20 and the drawing means 50 are rotated by the rotation motors 24A and 51A. , 53A is stopped, and the feeding means 20 enters a standby state. Next, when the second adherend supply means 70 drives the linear motion motor 72 to raise and lower the table 73 and the upper surface of the second adherend WK2 located at the uppermost position is detected by the detection means 74, the direct movement is performed. The drive of the motor 72 is stopped. Then, when the first adherend WK1 is placed on the table 62 at the initial position indicated by the solid line in FIG. 1 by a transport means (not shown) such as a manual or multi-joint robot or a belt conveyor, the first adherend support means 60 drives a decompression means (not shown) to suck and hold the first adherend WK1, and then drives the linear motor 61 to move the table 62 to the left.

  When the detection means (not shown) such as an optical sensor or an imaging means detects that the first adherend WK1 has reached a predetermined position below the peeling plate 23, the feeding means 20 and the drawing means 50 are In synchronization with the movement, the rotation motors 24A, 51A, 53A are driven to feed out the original fabric RS from the support roller 21 and to feed out the first release sheet RL1 from the collection roller 53. As a result, the second release sheet RL2 is peeled from the double-sided adhesive sheet AS by the release plate 23, and the first release sheet RL1 is temporarily attached to the first adhesive surface SA1 as shown by the two-dot chain line on the right side in FIG. The double-sided adhesive sheet AS is fed out in the state, the first release sheet RL1 is folded back in the direction opposite to the temporary attachment surface AP1 temporarily attached to the first adhesive surface SA1, and the double-sided adhesive sheet AS is supplied. The adhesive sheet AS is applied to the first adherend WK1 by pressing with the pressing roller 30 from the first release sheet RL1 side. Then, when the next double-sided adhesive sheet AS is detected by a detection means (not shown) at a predetermined position on the peeling plate 23, the feeding means 20, the drawing means 50, and the first adherend support means 60 are rotated by the rotation motor 24A, The drive of 51A, 53A and the linear motor 61 is stopped. Thereby, as shown by the two-dot chain line on the left side in FIG. 1, the entire second adhesive surface SA2 is affixed to the first adherend WK1.

  Next, the pressing means 40 drives the linear motion motor 42 and the electrostatic chuck 46 to lower the support member 45 at the initial position shown by the solid line in FIG. 1, and hold the second adherend WK2 on the support surface 45A. Thereafter, the support member 45 is returned to the initial position. Thereafter, when the second adherend supplying means 70 drives the linear motor 72 to raise the table 73 and the upper surface of the next second adherend WK2 located at the uppermost position is detected by the detecting means 74. Then, the drive of the linear motor 72 is stopped.

  Next, the pressing means 40 drives the linear motor 41 to move the support member 45 in the initial position to the right, and the support member 45 is stopped at the position indicated by the two-dot chain line on the left side in FIG. When a predetermined position above 62 is reached, the driving of the linear motor 41 is stopped. Next, the pressing means 40 drives the linear motion motor 42 and lowers the supporting means 43, thereby pressing the second adherend WK2 against the double-sided adhesive sheet AS with the folded first release sheet RL1 interposed therebetween. To do. Then, the pulling means 50 drives the rotation motors 51A and 53A, winds up the first release sheet RL1, and, as shown in FIG. 2A, from between the second adherend WK2 and the double-sided adhesive sheet AS. The first release sheet RL1 is pulled out via the folded first release sheet RL1, and the entire first adhesive surface SA1 is pressed and pasted to the second adherend WK2. As shown in FIG. 2B, the pulled-off first release sheet RL1 is prevented from being peeled from the next double-sided adhesive sheet AS by the release stopper 54, and detection means (not shown) such as a torque sensor and a limit switch are used for the first release sheet RL1. When it is detected that the tension of the one release sheet RL1 has reached a predetermined value, the pulling means 50 stops driving the rotation motors 51A and 53A. At this time, the pulled-out first release sheet RL1 is prevented from being peeled off from the next double-sided adhesive sheet AS by the release stopper 54, and therefore the first release sheet RL1 from the first adhesive surface SA1 of the next double-sided adhesive sheet AS. By peeling off, it is possible to prevent dust from adhering to the first adhesive surface SA1 portion.

  Next, after the pressing means 40 stops driving the electrostatic chuck 46, the linear motion motor 42 and the linear motor 41 are driven to return the support member 45 to the initial position. Then, after the first adherend support means 60 stops driving the decompression means (not shown), the first adherend WK1 to which the second adherend WK2 is affixed is transported to the next process by a manual or transport means (not shown). Then, the first adherend support means 60 drives the linear motor 61 to return the table 62 to the initial position, and thereafter the same operation as described above is repeated.

  According to the embodiment as described above, the first release sheet RL1 is pulled out from between the double-sided adhesive sheet AS and the second adherend WK2 attached to the first adherend WK1, and the first adherend WK1. Since the second adherend WK2 is affixed, the risk of dust being mixed between the double-sided adhesive sheet AS and the second adherend WK2 can be reduced. Moreover, since it is possible to prevent the second adherend WK2 from being bent as much as possible, the stress applied to the second adherend WK2 can be reduced.

  As described above, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations. In addition, the description of the shape, material, and the like disclosed above is exemplary for ease of understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of some or all of such restrictions is included in this invention.

For example, a pressing member made of a blade material, rubber, resin, sponge, or the like can be used as the pasting means, and a configuration of pressing by air blowing can also be used.
Further, the pressing means 40 may be configured to attract and hold the second adherend WK2 on the support surface 45A by a decompression means such as a decompression pump or a vacuum ejector, or the second adherend with a mechanical chuck. You may comprise so that WK2 may be hold | maintained.
Further, the pressing means 40 may adopt a configuration in which the second adherend WK2 is pressed against the double-sided adhesive sheet AS by air blowing, or may support the support member 45 without the base plate 44 interposed therebetween.
Further, the second adherend WK2 may be pressed manually without providing the pressing means 40.

Further, the pulling means 50 is provided so as to be able to partially peel the first release sheet RL1 from the first adhesive surface SA1, and presses the part of the first adhesive surface SA1 exposed by the partial peeling. For example, the second adherend WK2 may be pressed and pasted by 40 or manually, and then the first release sheet RL1 may be pulled out. In this case, before the second adherend WK2 is pressed against the double-sided adhesive sheet AS by the pressing means 40 or manually, the pulling means 50 drives the rotation motors 51A and 53A, and a part of the first adhesive surface SA1. Can be expressed.
Further, the timing at which the pulling means 50 stops driving the rotation motors 51A and 53A is when the image pickup means such as an optical sensor or a camera detects that the pulled first release sheet RL1 has reached a predetermined position. Good.
Further, the pulling means 50 may drive the collection roller 53 by the rotation motor 53A and pull the first release sheet RL1 without providing the rotation motor 51A, the drive roller 51, and the pinch roller 52.
Further, the pulling means 50 does not need to be provided with a peeling suppressing means, and as shown by a two-dot chain line in FIG. 2B, the first peeling sheet RL1 is hung around the pressing roller 30, and the pressing roller 30 is moved. You may make it function as a peeling suppression means.

  In addition, the material, type, shape, and the like of the double-sided adhesive sheet AS and the adherends WK1 and WK2 in the present invention are not particularly limited. For example, the double-sided adhesive sheet AS may have a circular shape, an elliptical shape, a polygonal shape such as a triangle or a quadrangle, or other shapes, or may have an adhesive form such as pressure-sensitive adhesiveness or heat-sensitive adhesiveness. When the heat-sensitive adhesive double-sided adhesive sheet AS is employed, it may be bonded by an appropriate method such as providing a heating means such as an appropriate coil heater or heat pipe for heating the double-sided adhesive sheet AS. Moreover, such a double-sided adhesive sheet AS may be, for example, a single layer having only an adhesive layer, a single layer or a multilayer having an intermediate layer, or a multilayer having no intermediate layer. The adherends WK1 and WK2 include, for example, food, resin containers, semiconductor wafers such as silicon semiconductor wafers and compound semiconductor wafers, information recording substrates such as circuit boards and optical disks, glass plates, steel plates, ceramics, wood plates, Arbitrary forms of members and articles such as resin plates can also be targeted. In addition, the double-sided adhesive sheet AS is replaced with a functional and intended reading, for example, any information label, decorative label, protective sheet, dicing tape, die attach film, die bonding tape, recording layer forming resin sheet, etc. Any sheet, film, tape or the like having the shape can be attached to any adherend as described above.

The means and steps in the present invention are not limited in any way as long as they can perform the operations, functions, or steps described with respect to those means and steps. The process is not limited at all. For example, the feeding means includes a second stripping sheet from a raw material in which a strip-shaped first release sheet is temporarily attached to the first adhesive surface of the double-sided adhesive sheet and a strip-shaped second release sheet is temporarily attached to the second adhesive surface. The double-sided adhesive sheet is fed out while the first release sheet is temporarily attached to the first adhesive surface, and the first release sheet is opposite to the temporary attachment surface temporarily attached to the first adhesive surface. If it is possible to supply the double-sided adhesive sheet by folding back, it is not limited in any way as long as it is within the technical scope in light of the technical common sense at the beginning of the application (description of other means and processes) Is omitted).
The drive device in the embodiment includes an electric device such as a rotation motor, a linear motion motor, a linear motor, a single axis robot, an articulated robot, an actuator such as an air cylinder, a hydraulic cylinder, a rodless cylinder, and a rotary cylinder. In addition to these, a combination of them directly or indirectly may be employed (some of them overlap with those exemplified in the embodiment).

DESCRIPTION OF SYMBOLS 10 Sheet sticking apparatus 20 Feeding means 30 Pressing roller (sticking means)
40 Pressing means 50 Pulling means AP1 Temporary attachment surface AS Double-sided adhesive sheet RL1 First release sheet RL2 Second release sheet RS Original fabric SA1 First adhesive surface SA2 Second adhesive surface WK1 First adherend WK2 Second adherend

Claims (4)

A sheet sticking device for sticking the first adherend and the second adherend through a double-sided adhesive sheet in which one surface is a first adhesive surface and the other surface is a second adhesive surface,
While peeling the said 2nd peeling sheet from the raw material by which the strip | belt-shaped 1st peeling sheet was temporarily attached to the 1st adhesion surface of the said double-sided adhesive sheet and the strip | belt-shaped 2nd peeling sheet was temporarily attached to the said 2nd adhesion surface, The double-sided adhesive sheet is fed out while the first release sheet is temporarily attached to the first adhesive surface, and the first release is performed in a direction opposite to the temporary attachment surface temporarily attached to the first adhesive surface. A feeding means for folding the sheet and supplying the double-sided adhesive sheet;
A sticking means for pressing and sticking the double-sided adhesive sheet supplied by the feeding means to the first adherend from the first release sheet side;
The second adherend is pressed against the double-sided adhesive sheet with the folded first release sheet interposed therebetween,
A sheet sticking apparatus comprising: a pulling means for pulling out the first release sheet from the space between the second adherend and the double-sided adhesive sheet via the folded first release sheet. A sheet sticking device for sticking the first adherend and the second adherend through a double-sided adhesive sheet in which one surface is a first adhesive surface and the other surface is a second adhesive surface,
While peeling the said 2nd peeling sheet from the raw material by which the strip | belt-shaped 1st peeling sheet was temporarily attached to the 1st adhesion surface of the said double-sided adhesive sheet and the strip | belt-shaped 2nd peeling sheet was temporarily attached to the said 2nd adhesion surface, The double-sided adhesive sheet is fed out while the first release sheet is temporarily attached to the first adhesive surface, and the first release is performed in a direction opposite to the temporary attachment surface temporarily attached to the first adhesive surface. A feeding means for folding the sheet and supplying the double-sided adhesive sheet;
A pasting means for pressing and pasting the double-sided adhesive sheet supplied by the feeding means to the first adherend from the first release sheet side;
A pressing means for pressing the second adherend against the double-sided adhesive sheet with the folded first release sheet interposed therebetween;
A sheet sticking apparatus comprising: a pulling means for pulling out the first release sheet through the folded first release sheet from between the second adherend and the double-sided adhesive sheet.   The pulling means is provided so as to be able to partially peel off the first release sheet from the first adhesive surface, and the second covering portion is provided on a part of the first adhesive surface exposed by the partial peeling. The sheet sticking device according to claim 1 or 2, wherein the sheet sticking device is provided so as to be able to control the pulling out of the first release sheet after the pressing and sticking. A sheet pasting method for pasting a first adherend and a second adherend through a double-sided adhesive sheet in which one surface is a first adhesive surface and the other surface is a second adhesive surface,
While peeling the said 2nd peeling sheet from the raw material by which the strip | belt-shaped 1st peeling sheet was temporarily attached to the 1st adhesion surface of the said double-sided adhesive sheet and the strip | belt-shaped 2nd peeling sheet was temporarily attached to the said 2nd adhesion surface, The double-sided adhesive sheet is fed out while the first release sheet is temporarily attached to the first adhesive surface, and the first release is performed in a direction opposite to the temporary attachment surface temporarily attached to the first adhesive surface. Folding the sheet and supplying the double-sided adhesive sheet;
A step of pressing and feeding the supplied double-sided adhesive sheet to the first adherend from the first release sheet side;
Pressing the second adherend against the double-sided adhesive sheet with the folded first release sheet sandwiched therebetween,
And a step of pulling out the first release sheet from the space between the second adherend and the double-sided adhesive sheet through the folded first release sheet.

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