Manufacturing method of laminate

Abstract

To provide a technique capable of preventing air bubbles or surface irregularities from remaining in a laminate.SOLUTION: A manufacturing method of a laminate may include: an arrangement process of arranging an adhesive member and a laminate structure having a resin plate, a pair of glass plates holding the resin plate therebetween in a vertical direction and an adhesion layer arranged between the resin plate and the pair of the glass plates respectively, so as to align and abut on a side of the laminate structure; and an autoclave process of wrapping the adhesive member and the laminate structure with a first bag member and heating and exhausting an inside of the first bag member.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a method for producing a laminate. [Background technology]

[0002] Patent Document 1 discloses a method for manufacturing laminated glass. In this manufacturing method, a laminate having an interlayer sandwiched between a pair of glass sheets is placed between a pair of rigid plates in a rubber bag. The rubber bag is then shrunk by creating a vacuum inside the rubber bag. The pair of rigid plates are pressed in a direction narrowing the gap between them. As a result, a compressive force acts on the laminate in a direction narrowing the gap between the pair of glass sheets. This produces a laminate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-255466 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the laminate, air bubbles may occur between the glass plate and the intermediate layer, and unevenness may occur on the surface of the glass plate.

[0005] The present specification provides a technique capable of suppressing air bubbles and surface irregularities generated in a laminate from remaining in the laminate. [Means for solving the problem]

[0006] A first embodiment of the technology disclosed in this specification is a method for manufacturing a laminate. The method for manufacturing a laminate may include an arrangement step of arranging a laminate structure including a resin plate, a pair of glass plates sandwiching the resin plate from above and below, and an adhesive layer disposed between the resin plate and each of the pair of glass plates, and an adhesive member so as to be in contact with the side surfaces of the laminate structure, and an autoclave step of wrapping the laminate structure and the adhesive member in a bag member, and heating and evacuating the inside of the bag member.

[0007] By subjecting the laminate to a heat treatment by an autoclave process, air bubbles and unevenness in the laminated structure can be corrected. When the resin has a higher thermal expansion coefficient than the glass, the resin plate expands more than the glass plate by the heat treatment. The adhesive layer between the resin plate and the glass plate moves following the expansion of the resin plate. As a result, a part of the adhesive layer is moved from between the resin plate and the glass plate to the outside of the laminated structure. When the laminated structure is cooled, the resin plate shrinks and returns to the state before the heat treatment. However, the adhesive layer that has moved to the outside of the laminated structure following the resin plate may not return to between the resin plate and the glass plate as it was before the heat treatment. In this case, the adhesive layer between the glass plate and the resin plate may become thin at the peripheral end of the laminated structure, and the adhesive force may decrease. In the above configuration, the adhesive members are arranged side by side so as to be in contact with the side of the adhesive layer of the laminated structure. According to this configuration, when the resin plate expands greatly by the heat treatment, the adhesive member penetrates between the glass plate and the resin plate so as to fill the part where the adhesive layer that followed was present. As a result, it is possible to suppress the adhesive layer from becoming thin at the peripheral end of the laminated structure.

[0008] In a second embodiment, in the arranging step of the first embodiment, a pair of backing plates may be further arranged to sandwich the laminated structure from above and below and to sandwich the adhesive member from above and below.

[0009] According to the above embodiment, the adhesive material can be stably supported by the pair of backing plates.

[0010] In a third embodiment, in the arranging step of the first or second embodiment, a side opposite to a portion where the adhesive member contacts the side surface of the adhesive layer may be covered with a surrounding member.

[0011] According to this configuration, it is possible to prevent the adhesive member from melting and flowing out to the outside of the pair of backing plates during the autoclave process.

[0012] In a fourth embodiment, in the arranging step of any one of the first to third embodiments, a covering member may be arranged to cover the backing plates so as to separate the pair of backing plates from the laminated structure.

[0013] According to this configuration, adhesion between the backing plate and the laminated structure and adhesive member due to the heat treatment in the autoclave process can be suppressed.

[0014] In a fifth embodiment, in the third embodiment, the surrounding member may include a first sheet member and a second sheet member. The arranging step may include arranging the first sheet member between a first backing plate of the pair of backing plates and the laminated structure, arranging the second sheet member between a second backing plate of the pair of backing plates different from the first backing plate and the laminated structure, arranging a peripheral portion of the first sheet member over an outer periphery of the laminated structure and the adhesive member and overlapping the surface of the second backing plate opposite the laminated structure, and arranging a peripheral portion of the second sheet member over an outer periphery of the laminated structure and the adhesive member and overlapping the first sheet member on the surface of the second backing plate opposite the laminated structure, thereby surrounding the laminated structure and the adhesive member.

[0015] According to this configuration, the first sheet member and the second sheet member can prevent the adhesive member from melting and flowing out of the pair of backing plates during the autoclaving process. Also, during the autoclaving process, adhesion between the pair of backing plates and the laminated structure and the adhesive member can be suppressed.

[0016] As a sixth aspect, in any one of the first to sixth aspects, the adhesive layer and the adhesive member may be made of the same material.

[0017] According to this configuration, when the adhesive member melted by the autoclave process penetrates between the glass plate and the resin plate to produce a laminate, the adhesive layer between the glass plate and the resin plate can be formed from a uniform material. [Brief description of the drawings]

[0018] [Figure 1] 1A and 1B are schematic cross-sectional views of a laminated intermediate body and a laminate group. [Diagram 2] 1 shows a flow chart illustrating a method for manufacturing a laminate. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. 13 is a perspective view for explaining the closing step. [Figure 6] FIG. 13 is a perspective view for explaining an exhaust process and a heating process. [Figure 7] FIG. [Figure 8] FIG. 13 shows a schematic cross-sectional view for explaining a first inspection step. [Figure 9] 1A and 1B are perspective views for explaining a manufacturing method of an adhesive member. [Figure 10] 1A and 1B are perspective views for explaining a manufacturing method of an adhesive member. [Figure 11] FIG. 2 is a perspective view of an adhesive member sheet and an adhesive member. [Figure 12] FIG. 2 shows a schematic cross-sectional view of a laminate unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] (Structure of Laminate) A method for manufacturing a laminate will be described with reference to Figs. 1 to 12. The laminate is used, for example, in displays, building materials, vehicles, and the like. The laminate is made of a laminate structure 10. The configuration of the laminate is the same as that of the laminate structure 10. As shown in Fig. 1, the laminate structure 10 includes a resin plate 22, a pair of adhesive layers 24, 24, and a pair of glass plates 26, 26. The laminate structure 10 has a structure in which the resin plate 22 is sandwiched between the pair of glass plates 26, 26 with the adhesive layer 24 interposed therebetween. In this embodiment, the resin plate 22, the pair of adhesive layers 24, 24, and the pair of glass plates 26, 26 are all made of transparent materials.

[0020] The resin plate 22 is a flat plate made of polycarbonate. The resin plate 22 has a thickness of, for example, 1.0 mm to 10.0 mm (for example, 5.0 mm). The glass plate 26 is a thin glass plate having a thickness of, for example, 1 / 5 to 1 / 10 that of the resin plate 22 (for example, 0.5 mm). The adhesive layer 24 is a thermoplastic synthetic resin such as EVA (short for Ethylene-Vinyl Acetate). The adhesive layer 24 has a thickness of about 0.1 to 3 times that of the glass plate 26. In a plan view, the resin plate 22 is larger than the adhesive layer 24 and the glass plate 26 over the entire periphery. The glass plate 26 and the resin plate 22 are bonded together by the adhesive layer 24, which is, for example, EVA. Therefore, even if the laminated structure 10 is lifted or moved, the glass plate 26 and the resin plate 22 are not separated from each other.

[0021] (Method of manufacturing laminate) As shown in Fig. 2, in the manufacturing method of the laminate, first, in S12, a first arrangement step is performed to create a laminate group 30. In the first arrangement step, as shown in Fig. 1, an adhesive layer 24 and a glass plate 26 are arranged in order on each of the front and back surfaces of a resin plate 22. In the first arrangement step, the resin plate 22, the pair of adhesive layers 24, 24, and the pair of glass plates 26, 26 are not yet integrally bonded together. When each step up to step S18 is completed, the resin plate 22, the pair of adhesive layers 24, 24, and the pair of glass plates 26, 26 are integrally bonded together.

[0022] Next, as shown in Fig. 1, the resin plate 22, the pair of adhesive layers 24, 24, and the pair of glass plates 26, 26 are sandwiched between a pair of backing plates 32, 32 in a laminated state. The backing plate 32 has a material and dimensions that are unlikely to deform or deteriorate in the subsequent steps. The backing plate 32 is, for example, a flat plate made of glass. Note that a thin film made of polyethylene terephthalate or the like may be disposed between the backing plate 32 and the glass plate 26 to protect the glass plate 26.

[0023] As shown in FIG. 3, in a plan view, the backing plate 32 is larger than the resin plate 22 by t mm over the entire circumference. For example, t is in the range of 4.0 to 6.0. t may vary according to the length of the resin plate 22 in the direction L. In this way, the laminated plate group 30 is produced. In addition, in the laminated plate group 30, the backing plate 32, the resin plate 22, the adhesive layer 24, and the glass plate 26 may be fixed by binding the laminated plate group 30 with a band so that they do not shift relative to each other. The band is made of a material that has high strength and excellent heat resistance, such as polypropylene. In addition, a film made of polyethylene terephthalate or the like may be disposed between the backing plate 32 and the glass plate 26 to protect the glass plate 26.

[0024] Next, in S14, a placing step is performed. As shown in Fig. 4, in the placing step, one sheet body 50 is spread out, and a plurality of laminate plate groups 30 are placed on the sheet body 50 with gaps between them. The sheet body 50 is made of, for example, polyamide synthetic resin such as nylon. The sheet body 50 has a thin film shape. The sheet body 50 has a thickness of, for example, 0.05 mm to 0.075 mm.

[0025] The sheet body 50 has a first sheet portion 52 and a second sheet portion 54 that are separated by a boundary line 56 in the center in the left-right direction of FIG. 4. A plurality of laminate plate groups 30 are placed on the first sheet portion 52. No laminate plate group 30 is placed on the second sheet portion 54. The number of laminate plate groups 30 placed on one sheet body 50 is not particularly limited. One laminate plate group 30 may be placed on one sheet body 50.

[0026] In the placing step, the flexible object 100 may be placed around each of the plurality of laminated plate groups 30. The flexible object 100 may be cotton such as cotton, that is, an object in which fibers are entangled and maintained in a lump state. The flexible object 100 may be, other than cotton, for example, a polymer such as nylon that allows gas to pass through, a nonwoven fabric, a cloth such as cloth, a sponge, wool such as wool, or paper. The flexible object 100 is spread between and around the plurality of laminated plate groups 30. The position where the plurality of laminated plate groups 30 and the flexible object 100 are placed may be within the outer periphery of the first sheet portion 52.

[0027] Next, in S16, a closing step is performed. As shown in Fig. 5, in the closing step, first, a nozzle 72 attached to the tip of an exhaust hose 70 is placed on the first sheet portion 52. Next, the sheet body 50 is folded along the boundary line 56 to place the second sheet portion 54 on the first sheet portion 52. As a result, the multiple laminated plate groups 30 are covered by the second sheet portion 54 and sandwiched between the first sheet portion 52 and the second sheet portion 54. Next, as shown in Fig. 6, the gap between the first sheet portion 52 and the second sheet portion 54 is airtightly closed.

[0028] Specifically, the first sheet portion 52 and the second sheet portion 54 are sandwiched by a sealer device and thermally compressed. The sealer device is, for example, a portable device having a pair of heating members. The worker sandwiches the first sheet portion 52 and the second sheet portion 54 between the pair of heating members of the sealer device and applies pressure to weld the first sheet portion 52 and the second sheet portion 54. This forms a sealed portion 60. The sealed portion 60 is formed along the three sides other than the boundary line 56. The sealed portion along the boundary line 56 is not formed. Inside the sealed portion 60 and the boundary line 56, the portion other than the multiple laminated plate groups 30 between the first sheet portion 52 and the second sheet portion 54 is filled with the flexible object 100.

[0029] Furthermore, the nozzle 72 protrudes outward from the space between the first sheet portion 52 and the second sheet portion 54. The sealed portion 60 is not formed where the nozzle 72 is disposed. Instead of the sealed portion 60, the first sheet portion 52 and the second sheet portion 54 are sealed around the nozzle 72 by the tape 62 to air-tightly seal the periphery of the nozzle 72.

[0030] Next, in S18, a first autoclave step is performed. As shown in FIG. 6, a pump (not shown) connected to a hose 70 exhausts gas (i.e., air) in the space between the first sheet portion 52 and the second sheet portion 54 from a nozzle 72 through the hose 70 to the outside of the space between the first sheet portion 52 and the second sheet portion 54. The gas in the space between the first sheet portion 52 and the second sheet portion 54 passes through the flexible object 100 and is exhausted from the nozzle 72 to the outside of the space between the first sheet portion 52 and the second sheet portion 54. This reduces the gap between the first sheet portion 52 and the second sheet portion 54. The flexible object 100 is compressed while being sandwiched between the first sheet portion 52 and the second sheet portion 54, and gradually deforms (i.e., the thickness decreases).

[0031] In addition, when the flexible object 100 is placed, it is possible to prevent the first sheet portion 52 and the second sheet portion 54 from coming into close contact during the exhaust process. The flexible object 100 may be any object that is breathable by having ventilation holes, ventilation paths, etc., and that gradually deforms due to compression of the first sheet portion 52 and the second sheet portion 54 as the air between them is exhausted in the subsequent exhaust process.

[0032] The exhaust process exhausts gas from the gap between the first sheet portion 52 and the second sheet portion 54, and the first sheet portion 52 and the second sheet portion 54 apply a compressive force to the plurality of laminated plate groups 30, thereby pressurizing the plurality of laminated plate groups 30. The flexible object 100 is compressed by the first sheet portion 52 and the second sheet portion 54, and therefore does not impede the application of the compressive force to the plurality of laminated plate groups 30. Furthermore, the flexible object 100 deforms and enters the region V (see FIG. 1) surrounded by the pair of backing plates 32, 32 and the laminated structure 10, so that the compressive force is applied from the side of the laminated structure 10 and the pair of backing plates 32, 32 can be prevented from bending too much.

[0033] In the first autoclave step, a process of heating the group of laminated plates 30 is performed while performing an evacuation process, thereby melting the adhesive layer 24 and bonding the resin plate 22 and the glass plate 26 together.

[0034] Next, in S20, a removal step is performed. As shown in Fig. 7, the first sheet portion 52 and the second sheet portion 54 are cut along a cut line 80 inside the sealed portion 60 to open the sheet body 50. This allows the laminated plate group 30 to be lifted from above and removed. The pair of backing plates 32, 32 are removed from the laminated body to produce the laminated structure 10.

[0035] Next, in S22, a first inspection step is performed. The first inspection step is an appearance inspection to inspect whether or not at least one of air bubbles inside the laminated structure 10 and unevenness on the surface of the laminated structure 10 occurs. The first inspection step may be performed using a microscope such as an optical microscope, or by visual inspection. If at least one of air bubbles and unevenness occurs in the laminated structure 10, it is determined that the laminated structure 10 does not pass the inspection (NO in S22), and the process proceeds to S24. On the other hand, if neither air bubbles nor unevenness occurs in the laminated structure 10, it is determined that the laminated structure 10 passes the inspection (YES in S22), and the manufacturing process ends. If YES in S22, the laminated structure 10 that has passed the inspection is a laminate.

[0036] In S24, a repair process is performed. In this embodiment, as shown in FIG. 8, a case where a recess 112 is generated on the surface 26a of the glass plate 26 will be described as an example. In the repair process, first, a protective sheet 114 is laid so as to cover the recess 112. Next, in a state where the protective sheet 114 is sandwiched between the pressurizing and heating means 116 and the glass plate 26, the pressurizing and heating means 116 is moved above the recess 112 and its surrounding area along the surface 26a of the glass plate 26. The heating and moving means may be, for example, an iron. At this time, the temperature of the bottom surface (i.e., the surface facing the surface 26a) of the pressurizing and heating means 116 may be, for example, 130°C to 140°C. In addition, the speed at which the pressurizing and heating means 116 moves on the surface 26a of the glass plate 26 may be 30 mm / s to 70 mm / s. In addition, the pressurizing and heating means 116 is moved continuously on the surface 26a of the glass plate 26 without staying at one place when the glass plate 26 is viewed in a plane. As a result, the recess 112 is pressurized, the recess 112 and the adhesive layer 24 overlapping the recess 112 are deformed, and the recess 112 is flattened. Note that even if air bubbles are generated, the air bubbles are discharged to the outside of the laminated structure 10 by a similar process.

[0037] Next, in S26, a second inspection step is performed. In the second inspection step, an inspection similar to that in the first inspection step in S22 is performed. If at least one of air bubbles and unevenness still remains in the laminated structure 10, it is determined that the laminated structure 10 does not pass the inspection (NO in S26). In this case, since the adhesive state of the laminated structure 10 may not be good, the laminated structure 10 is sent to the second arrangement step in step S28. On the other hand, if the air bubbles and unevenness that have occurred in the laminated structure 10 have disappeared, it is determined that the laminated structure 10 has passed the inspection (YES in S26), and the manufacturing process of the laminated structure 10 is completed. If the answer is YES in S26, the laminated structure 10 that has passed the inspection is a laminate.

[0038] By carrying out the first inspection step and the second inspection step, it is not necessary to carry out subsequent processing such as the second autoclave step in step S30.

[0039] In S28, a second arrangement step is performed. In the second arrangement step, the adhesive member 118 is arranged next to the adhesive layer 24 of the laminated structure 10. The laminated structure 10 is relatively easy to handle since it is already bonded integrally. In the second arrangement step, the laminated structure 10 and the adhesive member 118 are not yet bonded integrally. When each step up to step S30 is completed, the laminated structure 10 and the adhesive member 118 are bonded integrally to produce a laminate.

[0040] Here, a method for manufacturing the adhesive member 118 will be described. First, as shown in FIG. 9, a plurality of resin sheets 120 are sandwiched between a pair of backing plates 122, 122. Each of the plurality of resin sheets 120 may have a thickness of, for example, 0.4 mm. The plurality of resin sheets 120 may include, for example, ten resin sheets 120. The plurality of resin sheets 120 may have a total thickness of 4 mm. The plurality of resin sheets 120, like the adhesive layer 24, is made of a thermoplastic synthetic resin such as EVA.

[0041] Next, thin films 124, 124 made of polyethylene terephthalate or the like are placed between the multiple resin sheets 120 and the pair of backing plates 122. The thin film 124 is larger than both the resin sheets 120 and the pair of backing plates 122 by a predetermined length over the entire periphery. The thin film 124 improves the releasability between the resin sheets 120 and the pair of backing plates 122. In this way, an adhesive member intermediate 126 is produced.

[0042] Next, as shown in FIG. 10, the adhesive member intermediate 126 is placed on one sheet member 50. Then, steps S14 to S20 are performed. These steps are similar to steps S14 to S20, except that the adhesive member intermediate 126 is used instead of the group of laminated plates 30, and the flexible object 100 is not placed. The autoclave treatment conditions are set so that the resin sheets 120 are bonded to each other. In FIG. 10, the same members as those shown in FIGS. 4 to 7 are denoted by the same reference numerals. As a result, the resin sheets 120 of the adhesive member intermediate 126 are melted and bonded to each other, and an adhesive member sheet 128 is produced.

[0043] 11, the adhesive member sheet 128 is cut to a predetermined width W. The width W may be the same as the thickness T (see FIG. 12) of the laminated structure 10. In this way, the adhesive member 118 is produced.

[0044] Returning to the description of the manufacturing method of the laminated body, in step S28 of FIG. 2, a second arrangement step is performed. FIG. 12 shows a cross-sectional view showing a cross section perpendicular to the laminated body 10 in the vicinity of the peripheral end of the laminated body 10. In the second arrangement step, the laminated body 10 and the adhesive member 118 are arranged side by side so as to contact with each other at the side surface 24a of the adhesive layer 24 of the laminated body 10. The adhesive member 118 is arranged around the outer periphery of the laminated body 10. In the second arrangement step, the laminated body 10 has already been integrally bonded, but the laminated body 10 and the adhesive member 118 have not yet been integrally bonded. When each step up to step S30 is completed, the laminated body 10 and the adhesive member 118 are integrally bonded to each other, and the laminated body is produced.

[0045] Next, the laminated structure 10 and the adhesive member 118 are sandwiched between a pair of backing plates 130a, 130b. Specifically, the backing plates 130a, 130b sandwich the laminated structure 10 from above and below, and also sandwich the adhesive member 118 from above and below. The backing plates 130a, 130b have a material and dimensions that are unlikely to deform or deteriorate in the subsequent steps. The backing plates 130a, 130b are, for example, flat plates made of glass. The backing plates 130a, 130b protrude outward from the laminated structure 10 around the entire periphery of the laminated structure 10. The backing plates 130a, 130b sandwich the adhesive member 118 from above and below over the entire length.

[0046] A first sheet member 140 is disposed on the backing plate 130a so as to cover the lower surface 132, the side surface 134, and a part of the upper surface 136. Specifically, the first sheet member 140 covers the entire lower surface 132 so as to separate the backing plate 130a from the laminated structure 10 and the adhesive member 118. The first sheet member 140 further covers the entire side surface 134. A peripheral portion 140a of the first sheet member 140 is disposed so as to overlap the peripheral end portion of the upper surface 136 from above. The backing plate 130a and the first sheet member 140 are not bonded to each other, and the first sheet member 140 is temporarily fixed to the backing plate 130a, for example, at the upper surface 136.

[0047] The second sheet member 142 is disposed on the upper surface 144 of the other backing plate 130b. Specifically, the second sheet member 142 covers the entire lower end surface of the laminated structure 10 and the adhesive member 118 so as to separate the other backing plate 130b from the laminated structure 10 and the adhesive member 118. The second sheet member 142 further extends to cover the outer periphery of the adhesive member 118. The second sheet member 142 surrounds the outer periphery of the adhesive member 118 at a position spaced apart from the outer periphery of the adhesive member 118. The second sheet member 142 extends to cover the outside of the first sheet member 140 extending along the side surface 134 and the upper surface 136 of one backing plate 130a, and the peripheral portion 142a is disposed on the first sheet member 140 on the upper surface 136. Therefore, the second sheet member 142 surrounds the laminated structure 10 and the adhesive member 118. In this way, a laminate unit 146 is produced.

[0048] The first sheet member 140 and the second sheet member 142 may be thin films made of polyethylene terephthalate or the like. The first sheet member 140 and the second sheet member 142 improve the releasability of the laminated structure 10 and the adhesive member 118 from the backing plates 130a and 130b.

[0049] Next, in step S30 of Fig. 2, a second autoclave step is performed. The second autoclave step is similar to the first autoclave step of S18, except that a laminate unit 146 is used instead of the group of laminate plates 30, and a flexible object 100 is not placed. The second autoclave step melts the adhesive layer 24, thereby repairing air bubbles and surface irregularities. This produces a laminate.

[0050] When the laminate is used in a product, the outer periphery of the laminate is cut to fit the dimensions required for use, and the adhesive member 118 is then separated from the laminate.

[0051] In the laminate unit 146, the adhesive members 118 are arranged side by side so as to contact the side surface 24a of the adhesive layer 24 of the laminated structure 10. With this configuration, when the resin plate 22 expands significantly due to the heat treatment, the adhesive members 118 penetrate between the resin plate 22 and the glass plate 26 so as to fill in the portion where the adhesive layer 24 had been located. As a result, it is possible to prevent the adhesive layer 24 from becoming thin at the peripheral end portion of the laminated structure 10.

[0052] In the above-described laminated unit 146, in the second arrangement step (step S28 in FIG. 2), the backing plates 130a and 130b sandwich the laminated structure 10 and the adhesive member 118 from above and below. With this configuration, the adhesive member 118 can be stably supported.

[0053] In the laminate unit 146 described above, in the second arrangement step, the second sheet member 142 covers the side opposite to the portion where the adhesive member 118 contacts the side surface 24a of the adhesive layer 24. With this configuration, it is possible to prevent the adhesive member 118 from melting and flowing out of the pair of backing plates 130 during the second autoclave step.

[0054] In the laminate unit 146, in the second arrangement step, the first sheet member 140 covers one of the backing plates 130 so as to separate the backing plate 130a from the laminated structure 10. In addition, the second sheet member 142 covers the upper surface of the other backing plate 130b so as to separate the other backing plate 130b from the laminated structure 10. With this configuration, it is possible to prevent the pair of backing plates 130 from adhering to the laminated structure 10 and the adhesive member 118 during the heat treatment in the second autoclave step.

[0055] In the laminate unit 146, in the second arrangement step, the first sheet member 140 is arranged between one of the backing plates 130a and the laminated structure 10, and the second sheet member 142 is arranged between the other backing plate 130b and the laminated structure 10. The peripheral portion 142a of the second sheet member 142 is arranged to overlap the upper surface 136 of one of the backing plates 130a beyond the outer periphery of the laminated structure 10 and the adhesive member 118. The peripheral portion 140a of the first sheet member 140 is arranged to overlap the second sheet member 142 on the upper surface 136 of one of the backing plates 130a beyond the outer periphery of the laminated structure 10 and the adhesive member 118, surrounding the laminated structure 10 and the adhesive member 118.

[0056] With this configuration, during the second autoclave step, the first sheet member 140 and the second sheet member 142 can prevent the adhesive member 118 from melting and flowing out of the pair of backing plates 130. Also, during the heat treatment in the second autoclave step, adhesion between the pair of backing plates 130 and the laminated structure 10 and the adhesive member 118 can be suppressed.

[0057] In the laminate unit 146, the adhesive layer 24 and the adhesive member 118 are made of the same material. With this configuration, when the adhesive member 118 melted in the second autoclave process penetrates between the glass plate 26 and the resin plate 22 to produce a laminate, the adhesive layer 24 between the glass plate 26 and the resin plate 22 can be formed of a uniform material.

[0058] Although specific examples of the present invention have been described above in detail, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and variations of the specific examples exemplified above. The technical elements described in this specification or drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology exemplified in this specification or drawings can achieve multiple objectives simultaneously, and achieving one of these objectives is itself technically useful.

[0059] (Correspondence) The second arrangement step and the second autoclave step are examples of an "arrangement step" and an "autoclave step", respectively. The sheet body 50 in the second autoclave step is an example of a "bag member". The second sheet member 142 is an example of a "surrounding member". The first sheet member 140 and the second sheet member 142 are examples of a "covering member".

[0060] (Variation 1) The adhesive layer and the adhesive member may be made of different materials.

[0061] (Variation 2) The adhesive member 118 is not limited to the embodiment. For example, an adhesive member arranged in contact with a side surface of one adhesive layer 24 of a pair of adhesive layers 24 and an adhesive member arranged in contact with a side surface of the other adhesive layer 24 may be arranged apart from each other.

[0062] (Variation 3) The covering member and the surrounding member may be separate bodies. For example, a sheet-like covering member that covers the backing plates so as to separate the pair of backing plates from the laminated structure, and a surrounding member that covers the opposite side of the portion where the adhesive member contacts the side surface of the adhesive layer may be disposed separately. [Explanation of symbols]

[0063] 10: laminated structure, 22: resin plate, 24: adhesive layer, 24a: side surface, 26: glass plate, 30: laminated plate group, 32: backing plate, 50: sheet body, 52: first sheet portion, 54: second sheet portion, 56: boundary line, 60: sealed portion, 62: tape, 70: hose, 72: nozzle, 80: cut line, 100: flexible object, 112: recess, 114: protective sheet, 116: pressurizing and heating means, 118: adhesive member, 120: resin sheet, 122: backing plate, 124: thin film, 126: adhesive member intermediate, 128: adhesive member sheet, 130: backing plate, 132: lower surface, 134: side surface, 136: upper surface, 140: first sheet member, 140a: peripheral portion, 142: second sheet member, 142a: peripheral portion, 144: upper surface, 146: laminated unit

Claims

1. A laminated structure including a resin plate, a pair of glass plates sandwiching the resin plate from above and below, and an adhesive layer disposed between the resin plate and each of the pair of glass plates; An adhesive member; a placement step of arranging the laminated structure so that the laminated structure is in contact with the side surfaces of the laminated structure; an autoclave process in which the laminated structure and the adhesive member are wrapped in a bag member, and the inside of the bag member is heated and evacuated; A method for manufacturing a laminate comprising the steps of:

2. The method for manufacturing a laminate according to claim 1 , further comprising the step of: disposing a pair of backing plates that sandwich the laminated structure from above and below and also sandwich the adhesive member from above and below in the disposing step.

3. The method for producing a laminate according to claim 1 , wherein in the positioning step, a surrounding member covers a side opposite to a portion where the adhesive member contacts the side surface of the adhesive layer.

4. The method for manufacturing a laminate according to claim 3 , wherein in the arranging step, a covering member is arranged to cover the backing plates so as to separate the pair of backing plates from the laminated structure.

5. The surrounding member includes a first sheet member and a second sheet member, The positioning step includes positioning the first sheet member between a first backing plate of the pair of backing plates and the laminated structure, and positioning the second sheet member between a second backing plate of the pair of backing plates different from the first backing plate and the laminated structure, 4. A method for manufacturing a laminate as described in claim 3, wherein a peripheral portion of the second sheet member is placed on the surface of the first backing plate opposite the laminate structure, beyond the outer periphery of the laminate structure and the adhesive member, and a peripheral portion of the first sheet member is placed on the second sheet member on the surface of the first backing plate opposite the laminate structure, beyond the outer periphery of the laminate structure and the adhesive member, thereby surrounding the laminate structure and the adhesive member.

6. The method for manufacturing a laminate according to claim 1 or 2, wherein the adhesive layer and the adhesive member are made of the same material.

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