Method for manufacturing composite panels, group of composite panels, and packaging of composite panels

Abstract

To make uniform the directionality of warp of a composite plate material obtained by heating a laminate under negative pressure.SOLUTION: When producing a composite plate material 10 obtained by mutually bonding a plurality of plate materials 5a, 5c by heating under negative pressure a laminate 5 obtained by laminating the plurality of plate materials 5a, 5c including a glass plate 5c by interposing intermediate layers as adhesive layers 5b between them, the laminate 5 is placed on a placing member 2 having a warped upper face 2a so that a main surface 5x of a lower end in a laminating direction of the laminate 5 faces the upper face 2a of the placing member 2.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a composite plate material obtained by laminating and integrating a plurality of plate materials including a glass plate. [Background Art]

[0002] Various composite plate materials obtained by laminating and integrating a plurality of plate materials including a glass plate and methods for producing the same have been proposed or put into practical use.

[0003] As an example, Patent Document 1 discloses a composite plate material formed by adhering thin glass sheets to both the front and back sides of a resin plate. The method for producing this composite plate material includes a step of heating under negative pressure a layered product obtained by laminating a resin plate and the thin glass sheets on the front and back sides of the resin plate with an intermediate layer interposed between each mutually adjacent layer. The intermediate layer becomes an adhesive layer upon heating. In this production method, the layered product is placed on a flat placement surface.

[0004] As another example, Patent Document 2 discloses a composite plate material formed by adhering a plurality of glass plates together. The method for producing this composite plate material also includes a step of heating under negative pressure a layered product obtained by laminating a plurality of glass plates with an intermediate layer similar to that described above interposed between each mutually adjacent glass plate. In this production method, the layered product is placed on a placement table, and an upper surface of the placement table is flat. [Prior Art Literature] [Patent Literature]

[0005] [Patent Document 1] Japanese Unexamined Patent Publication No. 2015-104845 [Patent Document 2] Japanese Unexamined Patent Publication No. 2019-99452 [Summary of Invention] [Problem to be Solved by the Invention]

[0006] The manufacturing methods disclosed in Patent Documents 1 and 2 both include a step of heating the laminate under negative pressure, which makes the resulting composite plate material prone to warping.

[0007] In workplaces and other settings where composite panels are used, there is a need to ensure that the direction of curvature of the composite panels is uniform, whether they curve convexly to one side (for example, the front side) or convexly to the other side (for example, the back side).

[0008] The reason such a request has arisen is that if the direction of warping of composite panels is not uniform, problems such as work errors and poor work efficiency may occur when installing the composite panels.

[0009] However, neither of the manufacturing methods disclosed in Patent Documents 1 and 2 can meet this requirement.

[0010] From the above perspective, the object of the present invention is to make the direction of warping of a composite plate material obtained by heating a laminate under negative pressure uniform. [Means for solving the problem]

[0011] (1) The first aspect of the present invention, which was devised to solve the above problems, is a method for manufacturing a composite plate material by bonding a plurality of plate materials together by heating a laminate, which is made by laminating a plurality of plate materials with an intermediate layer acting as an adhesive layer between them, under negative pressure, characterized in that the laminate is placed on a mounting member having a curved upper surface, such that the main surface at the lower end of the laminate in the lamination direction faces the upper surface of the mounting member.

[0012] With this configuration, when the laminate is heated under negative pressure, the laminate curves in accordance with the curved shape of the upper surface of the mounting member. Therefore, the resulting composite panel always curves so as to be convex in one direction. This makes the direction of the warp of the composite panel uniform.

[0013] (2) In the configuration of (1) above, the laminated assembly having the aforementioned mounting member and the laminated body may be stacked in multiple layers, and then the multiple layers of the laminated body may be heated under negative pressure.

[0014] This method allows for the simultaneous production of multiple composite panels from a multi-layered laminate, thereby increasing productivity.

[0015] (3) In the configuration of (2) above, a plurality of support columns are interposed between the upper mounting member and the lower mounting member so as to surround the outer periphery of the laminate, thereby stacking the laminate assembly in multiple layers, and at least some of the support columns may be made length adjustable using spacers.

[0016] In this way, problems caused by the weight of the stacked assemblies located relatively above the support columns acting on the mounting member can be avoided. Specifically, when the above weight acts on the mounting member, a change in shape may occur in the mounting member, but by using spacers in response to this change in shape, the stability of the mounting member's shape can be ensured.

[0017] (4) In any of the configurations (1) to (3) above, the upper surface of the mounting member described above may be curved so as to be convex downwards.

[0018] In this way, for example, when stacking multiple layers of stacked assemblies as described above, the stability of the shape of the mounting member can be more appropriately ensured.

[0019] (5) In any of the configurations described in (1) to (4) above, a shape-correcting member may be placed between the laminate and the aforementioned mounting member.

[0020] In this way, when the upper surface of the mounting member is curved so as to be convex downwards, the presence of the shape-correcting member can suppress excessive warping of the resulting composite panel material, or change the direction of the warping to be convex upwards.

[0021] (6) In the configuration of (5) above, the laminate is sandwiched between an upper backing plate and a lower backing plate, and the shape correcting member may be arranged between the lower backing plate and the placing member.

[0022] According to this configuration, the warpage shape of the obtained composite plate material can be formed into a smoothly curved shape by the presence of the two backing plates.

[0023] (7) In the configuration of (5) or (6) above, the upper surface of the placing member is curved so as to protrude downward, and the shape correcting member may be arranged at the central portion of the curved surface.

[0024] According to this configuration, the shape correcting member can be brought into contact with the central portion of the main surface at the lower end in the lamination direction of the laminate, so that the magnitude and direction of warpage of the obtained composite plate material can be optimized.

[0025] (8) In the configuration of (6) or (7) above, the shape correcting member, the upper backing plate, and the lower backing plate may be heated together with the laminate under negative pressure.

[0026] According to this configuration, when heating is performed under negative pressure, a pressing force due to the negative pressure acts from the shape correcting member on the laminate, so the magnitude and direction of warpage of the obtained composite plate material can be more reliably optimized.

[0027] (9) In the configuration of any one of (1) to (8) above, the laminate may be formed by laminating a glass plate and a resin plate via the intermediate layer.

[0028] According to this configuration, it is possible to appropriately cope with a situation where the resin plate greatly affects the occurrence of warpage.

[0029] (10) A second aspect of the present invention, which was devised to solve the above problems, is a method for manufacturing a composite plate material by bonding a plurality of plate materials together by heating a laminate, which is made by laminating a plurality of plate materials with an intermediate layer acting as an adhesive layer between them, under negative pressure, characterized in that the laminate is placed on a mounting member such that the main surface of the lower end of the laminate in the lamination direction faces the upper surface of the mounting member, and a shape-correcting member is placed between the laminate and the mounting member.

[0030] With this configuration, the direction of curvature of the resulting composite panel can be made uniform not only when the upper surface of the mounting member is curved to be convex downwards or convex upwards, but also when it is flat, thanks to the presence of the shape-correcting member.

[0031] (11) A third aspect of the present invention, which was devised to solve the above problems, is a group of composite panels obtained by performing any of the manufacturing methods described in (1) to (10) above multiple times, characterized in that all of the composite panels are curved so as to be convex in the same direction.

[0032] With this configuration, the direction of warping can be made uniform for all composite panels that make up the group of composite panels.

[0033] (12) A fourth aspect of the present invention, which was devised to solve the above problems, is a composite board material packaging body in which a plurality of composite board materials, each having a plurality of board materials bonded to each other by an adhesive layer, are arranged and packaged, characterized in that all of the plurality of composite board materials are curved so as to be convex in the same direction.

[0034] This configuration helps to prevent the packaging from becoming larger, as well as damage or breakage to the composite panels, which can occur when composite panels with different warping directions are mixed together and packaged.

[0035] (13) A fifth aspect of the present invention, which was devised to solve the above problems, is a composite board material packaging body in which a plurality of composite board materials, each having a plurality of board materials bonded to each other by an adhesive layer, are arranged and packaged, characterized in that some of the plurality of composite board materials are curved so as to be convex in the same direction, and all other composite board materials are flat.

[0036] Even with this configuration, it is possible to prevent the packaging from becoming larger, as well as damage or breakage to the composite panels, which can occur when composite panels with different warping directions are mixed together and packaged. [Effects of the Invention]

[0037] According to the present invention, the direction of warping of a composite panel obtained by heating a laminate under negative pressure can be made uniform. [Brief explanation of the drawing]

[0038] [Figure 1] This is a perspective view showing a disassembled component arrangement, which is the main component of the laminated assembly that is the subject of the manufacturing method for composite board material according to the embodiment of the present invention. [Figure 2] This is a plan view showing a laminated assembly, which is the main component to be implemented in the manufacturing method of the composite board material according to the embodiment of the present invention. [Figure 3] This is a longitudinal cross-sectional front view showing the laminated assembly, which is the main component of the manufacturing method for composite panels according to the embodiment of the present invention, and the surrounding equipment configuration. [Figure 4] This is a longitudinal cross-sectional front view showing the laminated assembly, which is the main component of the manufacturing method for composite panels according to the embodiment of the present invention, and the surrounding equipment configuration. [Figure 5] This is a partially broken front view showing a manufacturing apparatus for carrying out a manufacturing method according to an embodiment of the present invention. [Figure 6] Figure 5 is a cross-sectional view along line BB. [Figure 7] A partially omitted longitudinal cross-sectional side view showing the configuration of a composite board material packaging body according to an embodiment of the present invention. [Figure 8]A partially omitted longitudinal cross-sectional side view showing another example of the configuration of a composite board material packaging body according to an embodiment of the present invention. [Figure 9] This is a longitudinal cross-sectional front view showing another example of the laminated assembly, which is the main component of the manufacturing method for composite panels according to the embodiment of the present invention, and the surrounding equipment configuration. [Modes for carrying out the invention]

[0039] Hereinafter, a method for manufacturing composite panels, a group of composite panels, and a composite panel packaging body according to the present invention will be described with reference to the attached drawings.

[0040] <Manufacturing method for composite panels> Figure 1 is an exploded perspective view showing the laminated assembly 1, which is the main component of the manufacturing method for composite panels according to this embodiment. As shown in the figure, the laminated assembly 1 comprises, from bottom to top, a mounting member 2, a shape correction member 3, a lower backing plate 4, a laminate 5, and an upper backing plate 6. In the following description, the direction of arrow X in the figure is considered the vertical direction, the direction of arrow Y is considered the horizontal direction, and the direction of arrow Z is considered the up and down direction. Figure 2 is a plan view of the laminated assembly 1. First, the structure of the laminated assembly 1 will be described based on Figures 1 and 2.

[0041] The mounting member 2 is a rectangular plate-like body, and both its vertical and horizontal lengths are longer than the vertical and horizontal lengths of the lower backing plate 4. Furthermore, the mounting member 2 is curved so as to be convex downwards. In this embodiment, the mounting member 2 is curved so as to be convex downwards in both the vertical and horizontal directions. Accordingly, the upper surface 2a of the mounting member 2 is also curved so as to be convex downwards in both the vertical and horizontal directions. The mounting member 2 is made of a metal such as stainless steel.

[0042] The shape-correcting member 3 is a rod-shaped body with a rectangular cross-section perpendicular to the longitudinal direction, having a vertical length of 400 to 700 mm, a horizontal length of 8 to 20 mm, and a thickness of 6 to 10 mm. The shape-correcting member 3 may be made of metal, wood, or the like, but in this embodiment, it is made of a resin such as polycarbonate. The shape-correcting member 3 is placed in the center of the upper surface 2a of the mounting member 2.

[0043] The lower backing plate 4 is a rectangular plate-like body with a vertical length of 1000 to 1800 mm, a horizontal length of 500 to 1200 mm, and a thickness of 6 to 10 mm. The lower backing plate 4 may be made of metal or the like, but in this embodiment it is made of glass (for example, soda glass). The size and material of the upper backing plate 6 are the same as those of the lower backing plate 4 described above.

[0044] The laminate 5 is constructed by laminating glass plates 5c on both the front and back sides of a resin plate 5a, with an adhesive sheet 5b acting as an intermediate layer in between. The laminate 5 as a whole is a rectangular plate-like body. The resin plate 5a, adhesive sheet 5b, and glass plate 5c that make up the laminate 5 each have different lengths in the vertical direction, horizontal direction, and thickness. The average length of the laminate 5 is 1000-3000 mm, the horizontal direction is 500-1500 mm, and the thickness is 4-9 mm.

[0045] The vertical length of the laminate 5 is 1 to 5 times the vertical length of the shape-correcting member 3, and the horizontal length of the laminate 5 is 10 to 100 times the horizontal length of the shape-correcting member 3. Therefore, in a plan view, the laminate 5 (main surfaces at both ends in the lamination direction) protrudes significantly from the periphery of the shape-correcting member 3.

[0046] The vertical and horizontal lengths of the laminate 5 may be approximately the same as the vertical and horizontal lengths of the two backing plates 4 and 6, but in this embodiment, those of the laminate 5 are slightly shorter than those of the two backing plates 4 and 6. Therefore, in a plan view, the two backing plates 4 and 6 protrude significantly from the periphery of the shape-correcting member 3, and slightly from the periphery of the laminate 5.

[0047] The thickness of the laminate 5 may be approximately the same as the thickness of each of the backing plates 4 and 6, but in this embodiment, the thickness of each of the backing plates 4 and 6 is greater than the thickness of the laminate 5 (for convenience, the relationship is shown as the opposite in Figure 1. The same applies to Figures 3 to 5 described later).

[0048] The resin plate 5a has a thickness of 0.5 to 8.0 mm and is made of resin such as polycarbonate or acrylic. The glass plate 5c has a thickness of 0.1 to 2.0 mm and is formed by methods such as the overflow downdraw method or the float method. The glass plate 5c is transparent.

[0049] The adhesive sheet 5b becomes an adhesive layer upon heating and is formed from a heat-crosslinkable adhesive (EVA, epoxy-based), a thermoplastic adhesive (EVA, PVB, TPU, COP), etc. The thickness of the adhesive sheet 5b is, for example, 0.1 mm to 1.0 mm. Alternatively, a liquid adhesive may be applied in a film instead of the adhesive sheet 5b.

[0050] The manufacturing method according to this embodiment includes a step of heating under negative pressure. Figure 3 illustrates the configuration of the stacked assembly 1 and its surrounding equipment before this step is performed, and corresponds to the cross-sectional view along line AA in Figure 2.

[0051] As shown in Figure 3, the shape-correcting member 3, the two backing plates 4 and 6, and the laminate 5, which are placed on the mounting member 2, are housed inside a bag (vacuum bag) 7. The bag 7 is made of an elastic material with elasticity, such as rubber or a resin film such as nylon, and a pipe 8 connected to the pump P is inserted into its opening. The opening of the bag 7 is fixed to the pipe 8 by a fastener 9 made of rubber or the like, and the airtightness inside the bag 7 is maintained.

[0052] As is clear from the figure, the main surface 5x at the lower end of the laminated body 5 in the lamination direction is facing the upper surface 2a of the mounting member 2. Furthermore, the laminated body 5 is marked so that the main surface 5x at the lower end of the lamination direction and the main surface 5y at the upper end of the lamination direction can be visually distinguished. Specifically, a pattern or mark is attached to either the upper surface, lower surface, or side surface of the resin plate 5a as a marker.

[0053] Under these conditions, a heating process is carried out under negative pressure. More specifically, by operating the pump P, the gas inside the bag 7 is discharged, and the air pressure inside the bag 7 is made negative. As a result, as shown in Figure 4, the bag 7 contracts, and the inner surface of the bag 7 comes into close contact with the shape-correcting member 3 and both backing plates 4 and 6. As a result, the laminate 5 is pressed from below by the shape-correcting member 3 and the lower backing plate 4, and simultaneously pressed from above by the upper backing plate 6. The air pressure inside the bag 7 is set to, for example, 0 to 500 Pa.

[0054] On the other hand, when the air pressure inside the bag 7 is reduced to a negative pressure as described above, the area around the bag 7 is heated from the outside, causing the adhesive sheet 5b contained in the laminate 5 to melt. In this case, the heating temperature is set to approximately 100 to 250°C. As a result, the resin plate 5a and both glass plates 5c of the laminate 5 are firmly bonded together by the adhesive sheet 5b.

[0055] During the process described above, both backing plates 4 and 6 and the laminate 5 deform due to the synergistic effect of negative pressure, their own weight and weight from above, and heat, pushing down the shape-correcting member 3. The shape-correcting member 3 also deforms due to the synergistic effect of negative pressure caused by the autoclave pressurization, weight from above, and heat. As these components 3 to 6 deform in close contact with each other, the laminate 5 curves so that it is convex downwards. In this case, the laminate 5 curves so that it is convex downwards not only in the vertical direction but also in the horizontal direction, as shown in the figure.

[0056] Subsequently, by stopping the heating as the pump P is activated, a composite plate material 10 curved to be convex downwards is obtained. This composite plate material 10 is formed by laminating a glass plate 5c on both the front and back sides of a resin plate 5a via an adhesive layer 5b.

[0057] In this embodiment, we illustrate a measure to be taken when the degree of curvature of the mounting member 2 is greater than the degree of curvature required for the composite panel 10. The degree of curvature required for the composite panel 10 is the degree of curvature required so as not to hinder the installation work of the composite panel 10.

[0058] In the above manufacturing method, the degree of curvature of the resulting composite panel 10 is smaller than that of the mounting member 2 due to the use of the shape-correcting member 3. In contrast, if the heating process under negative pressure is performed in the same manner as above without using the shape-correcting member 3, the degree of curvature of the composite panel 10 will be approximately the same as that of the mounting member 2. This is because, when heated under negative pressure, both backing plates 4 and 6 and the laminate 5 curve to conform to the curved shape of the upper surface 2a of the mounting member 2.

[0059] Therefore, according to the above manufacturing method, it is possible to prevent the curvature of the composite panel 10 from becoming excessively large compared to the required curvature. If the required curvature of the composite panel 10 is changed, the thickness of the shape-correcting member 3 can be changed to accommodate the new required curvature. Also, if the curvature of the mounting member 2 is the same as the required curvature of the composite panel 10, the shape-correcting member 3 can be omitted, and the two backing plates 4 and 6 and the laminate 5 can be placed inside the bag 7 and heated under negative pressure in the same manner as described above.

[0060] Figure 5 illustrates a preferred manufacturing apparatus 11 for carrying out the manufacturing method according to this embodiment. Figure 6 is a cross-sectional view taken along line B-B in Figure 5. As shown in these figures, the manufacturing apparatus 11 has a structure in which the previously described laminated assembly 1 is stacked in multiple layers. The number of layers is preferably 5 to 30, and more preferably 10 to 15.

[0061] More specifically, this manufacturing apparatus 11 has multiple support columns 12 (six in the illustrated example) interposed between the upper mounting member 2 and the lower mounting member 2 immediately adjacent to it. The six support columns 12 surround the outer periphery of the shape correction member 3, the laminated body 5, and both backing plates 4 and 6.

[0062] Of the six support columns 12, the two columns 12 located in the vertical center can be adjusted in length using spacers 12a. In this embodiment, these two columns 12 are made longer than the other columns 12 by using spacers 12a. This prevents improper deformation of the mounting member 2 due to a relatively large weight acting on these two columns 12. In this embodiment, the lowest mounting member 2 is supported on the support surface 13 via the same six support columns 12 as described above.

[0063] In this manufacturing apparatus 11, the shape-correcting members 3, laminates 5, and both backing plates 4 and 6, which are placed on each mounting member 2, are housed in a bag 7 that is under negative pressure. Therefore, in all of the multiple stages, the heating process under negative pressure is performed in the same way as in the manufacturing method described above. In this case, the heating process under negative pressure is performed simultaneously in all of the multiple stages. This makes it possible to manufacture composite plate materials 10 that are curved to be convex downwards in multiple stages simultaneously. Therefore, productivity is greatly improved.

[0064] <Composite board material group> The composite panel material group according to this embodiment is obtained by performing the above manufacturing method multiple times (including the case where it is performed simultaneously in multiple stages as described above). All of the obtained composite panel materials 10 are curved so as to be convex in the same direction, and the direction of warping is uniform. Furthermore, as previously described, the markings attached to the laminate 5 do not disappear even when heated under negative pressure, so the direction of warping of the composite panel material 10 can be visually confirmed.

[0065] <Composite panel packaging> Figure 7 shows a first example of a composite panel packaging 14 according to this embodiment. In this first example, multiple composite panels 10 obtained by the manufacturing method described above are arranged in a vertical orientation and packaged. In this embodiment, the multiple composite panels 10 are stored in the internal space of the packaging box 15, but the packaging configuration is not limited to this. The composite panels 10 are also marked with the markings described above.

[0066] In this first example, all of the composite panels 10 are curved in the same direction (to the left in the diagram), resulting in a uniform direction of curvature. Therefore, compared to cases where composite panels with different directions of curvature are mixed, the composite panel packaging 14 can be made more compact, and damage or breakage during transport is less likely to occur.

[0067] Figure 8 shows a second example of the composite panel packaging 14 according to this embodiment. In this second example, as with the first example described above, multiple composite panels 10 are stored vertically in the internal space of the packaging box 15. In this case as well, the composite panels 10 are marked with the marks described above.

[0068] In this second example, some of the composite panels 10 among the multiple panels are curved in the same direction (to the left in the diagram), while all the other composite panels 10 are flat. Even in this case, compared to the case where composite panels with different curvature directions are mixed, the composite panel packaging 14 can be made appropriately compact, and damage or breakage during transport is less likely to occur.

[0069] Although the manufacturing method of composite panels, the group of composite panels, and the packaging of composite panels according to the embodiments of the present invention have been described above, the embodiments of the present invention are not limited thereto, and various modifications can be made without departing from the spirit of the present invention.

[0070] In the manufacturing method according to the above embodiment, a shape-correcting member 3 with a relatively small thickness was used. However, if the thickness of the shape-correcting member 3 is increased compared to the previously described case, a composite panel material 10 that is curved to be convex upward can be obtained, as shown in Figure 9. The manufacturing method in this case is the same as that described above.

[0071] In the manufacturing method according to the above embodiment, a mounting member 2 curved such that its upper surface 2a is convex downwards was used, but a mounting member 2 curved such that its upper surface 2a is convex upwards may also be used. In this case, a shape-correcting member 3 may or may not be used.

[0072] In the manufacturing method according to the above embodiment, a mounting member 2 curved such that its upper surface 2a is convex downwards was used, but a mounting member 2 with a flat upper surface 2a may also be used. In this case, a shape-correcting member 3 is required.

[0073] In the manufacturing method according to the above embodiment, a mounting member 2 that is curved in both the vertical and horizontal directions is used, but a mounting member 2 that is curved in only one of the vertical or horizontal directions may also be used.

[0074] In the manufacturing method according to the above embodiment, a rod-shaped body with a rectangular cross-section perpendicular to the longitudinal direction was used as the shape-correcting member 3. However, the shape of the shape-correcting member 3 is not particularly limited and may be, for example, a round rod or a plate.

[0075] In the manufacturing method according to the above embodiment, the laminate 5 is constructed by interposing an intermediate layer 5b between the resin plate 5a and the glass plates 5c on its front and back sides. However, the number of resin plates 5a and glass plates 5c may be greater than or equal to this number, and the laminate may also be constructed by interposing an intermediate layer 5b between multiple glass plates 5c without using the resin plate 5a.

[0076] In the composite panel packaging 14 according to the above embodiment, multiple composite panels 10 are arranged in a vertical position, but they may also be arranged in an inclined position or a horizontal position.

[0077] In the above embodiment, the vertical direction was defined as being aligned with the vertical line, but the vertical direction may also be defined as being inclined within 30° of the vertical line. [Explanation of Symbols]

[0078] 1. Stacked Assembly 2 Mounting member 2a Upper surface of mounting member 3. Shape modification member 4. Lower backing plate 5. Laminate 5a Resin plate 5b Adhesive layer (middle layer) 5c glass plate Main surface at the lower end of the stacking direction of the 5x laminate 6. Upper backing plate 7 Adhesive Sheet 10 Composite board material 12 pillars 12a Spacer 13 Support surface 14 Composite panel packaging

Claims

1. A method for manufacturing a composite sheet material by bonding multiple sheet materials together by heating a laminate, which is made by laminating multiple sheet materials with an intermediate layer acting as an adhesive layer between them, under negative pressure, The aforementioned plurality of plate materials include glass plates, The laminate is placed on the mounting member such that the main surface of the lower end of the laminate in the stacking direction faces the upper surface of the mounting member. A shape-correcting member is placed between the laminate and the aforementioned mounting member. The vertical length of the laminate is 1 to 5 times the vertical length of the shape-correcting member. A method for manufacturing a composite panel, characterized in that the lateral length of the laminate is 10 to 100 times the lateral length of the shape-correcting member.

2. The method for manufacturing a composite panel according to Claim 1, characterized in that the upper surface of the mounting member is curved.

3. A method for manufacturing a composite panel according to claim 1, characterized in that a laminated assembly having the mounting member and the laminate is stacked in multiple layers, and then the multiple layers of the laminate are heated under negative pressure.

4. The method for manufacturing a composite panel according to claim 3, characterized in that a plurality of support columns are interposed between an upper support member and a lower support member so as to surround the outer periphery of the laminate, thereby stacking the laminate assembly in multiple layers, and at least some of the support columns are adjustable in length using spacers.

5. The method for manufacturing a composite panel according to claim 2, characterized in that the upper surface of the mounting member is curved so as to be convex downwards.

6. The method for manufacturing a composite panel according to any one of claims 1 to 5, characterized in that the laminate is sandwiched between an upper backing plate and a lower backing plate, and the shape-correcting member is placed between the lower backing plate and the aforementioned backing member.

7. The method for manufacturing a composite panel according to claim 6, characterized in that the upper surface of the mounting member is curved so as to be convex downward, and the shape-correcting member is placed in the center of the curved surface.

8. The method for manufacturing a composite plate according to claim 7, characterized in that the shape-correcting member, the upper backing plate, and the lower backing plate are heated together with the laminate under negative pressure.

9. The method for manufacturing a composite plate material according to any one of claims 1 to 5, characterized in that the laminate is made up of a glass plate and a resin plate laminated with the intermediate layer in between.

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