Method for manufacturing composite plate material and holding body

Abstract

To prevent the positional shift of the constituent material of a laminate before bonding treatment is applied.SOLUTION: The method for producing a composite plate material includes a preparing step S1 of preparing a laminate LM including a glass-based plate material 3a and a plate-shaped material 2 as a laminate, a clamping step S2 of obtaining a clamped body CB by disposing a pair of backing plates 5a and 5b on both front and back sides of the laminate LM, a binding step S3 of binding the clamped body CB with a band member 7, and a joining step S6 of obtaining a composite plate material 1 in which the glass-based plate material 3a and the plate-shaped material 2 are joined to each other by subjecting the clamped body CB to a joining treatment of heating under a negative pressure atmosphere.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a method for manufacturing a composite plate material formed by stacking a plurality of plate materials, and a holding member used in this manufacturing method. [Background technology]

[0002] In a wide range of fields, such as cover components for various types of equipment and building materials, composite plate materials are often used, in order to achieve both durability and light weight, by laminating a pair of glass plates to the front and back of a resin plate via an adhesive layer.

[0003] For example, Patent Document 1 discloses a method for manufacturing such a composite plate material, which includes the steps of forming a laminate by stacking a pair of glass plates with adhesive sheets interposed on both the front and back sides of a resin plate, and joining the glass plates to the resin plate by heating the laminate while pressing it from both the front and back sides with backing plates (pressing plates) under negative pressure (see paragraphs 0038 to 0040 of the document). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-104845 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-described manufacturing method of a composite plate, after the resin plate and the glass plate are stacked to form a laminate, the laminate must be transported to a heating device and placed in the heating device. In conventional manufacturing methods, there is a risk of misalignment of the glass plate and the resin plate during the transport and loading process. Such misalignment makes it difficult to manufacture the composite plate with high precision.

[0006] The present invention has been made in view of the above circumstances, and has as its technical object to prevent misalignment of the constituent materials of a laminate before a joining process is performed. [Means for solving the problem]

[0007] (1) The present invention is intended to solve the above-mentioned problems, and is a method for manufacturing a composite plate material, comprising: a preparation step of preparing a laminate including a glass-based plate material and a plate-shaped material as a laminate; a clamping step of arranging a pair of backing plates on both the front and back sides of the laminate to obtain a sandwiched body; and a joining step of performing a joining process in which the sandwiched body is heated under a negative pressure atmosphere to obtain a composite plate material in which the glass-based plate material and the plate-shaped material are joined together, the method further comprising a binding step of binding the sandwiched body with a band member, and in the joining step, the joining process is performed on the sandwiched body bound by the band member.

[0008] According to this configuration, by binding the clamping body with the band member in the binding step, it is possible to prevent misalignment between the glass-based plate material and the plate-shaped material even when the clamping body is transported for the joining step, thereby enabling the composite plate material to be manufactured with high precision.

[0009] (2) In the manufacturing method of the composite plate material described in (1) above, the clamping body may be configured in a rectangular shape having a long side and a short side when viewed in the stacking direction, and in the binding step, the clamping body may be bound by wrapping the multiple band members around the clamping body in the short side direction, spaced apart from each other in the long side direction.

[0010] According to this configuration, by binding the clamping body with the plurality of band members, it is possible to reliably prevent misalignment between the glass-based plate material and the plate-shaped material in the clamping body configured in a rectangular shape.

[0011] (3) In the method for manufacturing a composite plate according to (1) or (2), the band member may be made of a polypropylene band, which allows the band member to suitably bind the clamping body.

[0012] (4) In the method for manufacturing a composite plate material described in any one of (1) to (3) above, in the binding step, the clamping body is bound by the band member using a binding device, and the binding device includes a base plate on which the clamping body can be placed, a band supply unit that supplies the band member to the base plate, and a fixing unit that wraps and fixes the band member wrapped around the clamping body, and the base plate may have a mounting surface on which the clamping body can be placed and a groove portion that opens into the mounting surface and allows the band member to pass through.

[0013] With this configuration, the binding device can efficiently bind the band member to the clamping body by placing the clamping body on the mounting surface of the base and wrapping the band member supplied from the band supply unit around the clamping body. Furthermore, by guiding the band member in a predetermined direction using the grooves in the base, the band member can be suitably bound to the clamping body.

[0014] (5) In the manufacturing method of the composite plate material described in (2) above, the backing plate is configured in a rectangular shape, and each side of the backing plate is located outside each side of the laminate, and the method further includes an encapsulation step of encapsulating the clamping body bound by the band member in an airtight bag, and in the joining step, the airtight bag in which the clamping body is encapsulated may be placed in an autoclave device, and the joining process may be performed on the clamping body.

[0015] According to this configuration, the laminated body contained in the clamping body is pressed by the airtight bag and the backing plate, thereby enabling the laminated body to be effectively bonded. In this case, since each side of the backing plate is positioned outward from each side of the laminated body, even if the plate-shaped material of the laminated body expands during the bonding process, each side of the plate-shaped member does not extend outward from each side of the backing plate. Therefore, the plate-shaped member being pressed against the airtight bag can be prevented from being misaligned with the glass-based plate material.

[0016] (6) In the method for manufacturing a composite plate material described in any one of (1) to (5) above, the plate-shaped material may include a synthetic resin plate having a thickness of 0.01 mm or more and 20 mm or less, the glass-based plate material may be laminated on both the front and back sides of the plate-shaped material via adhesive layers, and the thickness of the glass-based plate material may be 0.7 mm or less.

[0017] (7) The present invention is intended to solve the above-mentioned problems, and is a clamping body comprising a laminate including a glass-based plate material and a plate-shaped material as a laminate, and a pair of backing plates arranged on both the front and back sides of the laminate, characterized in that the laminate and the backing plates are bound together by a band member.

[0018] According to this configuration, by binding the clamping body with a band member, it is possible to prevent misalignment between the glass-based plate material and the plate-shaped material even when the clamping body is transported to perform a bonding process on the glass-based plate material and the plate-shaped material. [Effects of the Invention]

[0019] According to the present invention, it is possible to prevent displacement of the constituent materials of the laminate before the joining process is performed. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a cross-sectional view of a composite plate. [Figure 2] 1 is a flowchart showing a method for manufacturing a composite plate material. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. 10 is a side view showing a clamping body bound by a band member. [Figure 10] FIG. 10 is a plan view showing a clamping body bound by a band member. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. [Figure 14] FIG. [Figure 15] FIG. [Figure 16] FIG. [Figure 17] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Figures 1 to 17 show an embodiment of a method for manufacturing a composite plate according to the present invention.

[0022] The composite plate produced by this method is constructed by bonding a glass-based plate and a plate-shaped material together as a laminate. The glass-based plate includes glass plates and plates made of glass ceramics. The glass-based plate is laminated on both the front and back sides of the plate-shaped material via adhesive layers.

[0023] In this embodiment, a glass resin laminate is exemplified as a composite plate. As shown in Fig. 1, the glass resin laminate 1 is formed by joining a transparent resin plate 2 as a plate-like material and transparent glass plates 3a and 3b as glass-based plate materials with transparent adhesive layers 4a and 4b. In this embodiment, the glass resin laminate 1 is formed in a rectangular shape, but is not limited to this shape.

[0024] The resin plate 2 is formed, for example, in a rectangular shape, but is not limited to this shape. The thickness of the resin plate 2 is 0.01 mm or more and 20 mm or less, more preferably 0.05 mm or more and 15 mm or less, and most preferably 0.1 mm or more and 10 mm or less.

[0025] The size of the resin plate 2 is, for example, 100 mm or more and 3000 mm or less in the vertical and horizontal directions, and most preferably 500 mm or more and 2500 mm or less.

[0026] As the material for the resin plate 2, for example, polycarbonate is preferably used, but various resin materials such as PMMA, PET, PEEK, PA, PVC, PE, PP, and PEN can also be used.

[0027] The glass plates 3a and 3b are configured, for example, in a rectangular shape, but are not limited to this shape. The glass plates 3a and 3b include two glass plates. Hereinafter, of the two glass plates 3a and 3b, one glass plate 3a will be referred to as the "first glass plate" and the other glass plate 3b will be referred to as the "second glass plate." The area of ​​the glass plates 3a and 3b is smaller than the area of ​​the resin plate 2. Ends 3a1, 3a2, 3b1, and 3b2 of each glass plate 3a and 3b are located inside ends 2a and 2b of the resin plate 2.

[0028] The glass plates 3a and 3b have a size of, for example, 100 mm to 3000 mm, and most preferably 500 mm to 2500 mm, in both the vertical and horizontal directions. The glass plates 3a and 3b are preferably thinner than the resin plate 2, and have a thickness of 0.7 mm or less, preferably 0.2 mm to 0.6 mm, and most preferably 0.2 mm to 0.5 mm.

[0029] The glass plates 3a and 3b are made of silicate glass or silica glass, preferably borosilicate glass, soda-lime glass, aluminosilicate glass, or alkali-free glass. Here, alkali-free glass refers to glass that is substantially free of alkali components (alkali metal oxides), specifically glass with an alkali component weight ratio of 3000 ppm or less. The alkali component weight ratio in the present invention is preferably 1000 ppm or less, more preferably 500 ppm or less, and most preferably 300 ppm or less.

[0030] The glass sheets 3a, 3b can be formed by known methods such as the float method, roll-out method, slot downdraw method, and redraw method, but are preferably formed by the overflow downdraw method. The overflow downdraw method involves pouring molten glass into an overflow groove provided at the top of a forming body having a substantially wedge-shaped cross section, allowing the molten glass to overflow on both sides of the overflow groove to flow down along both sidewalls of the forming body, and fusing and integrating the molten glass at the lower end of the forming body to continuously form a single glass ribbon.

[0031] The adhesive layers 4a, 4b are configured, for example, in a rectangular shape, but are not limited to this shape. The adhesive layers 4a, 4b include a first adhesive layer 4a interposed between one surface (front surface) of the resin plate 2 and the first glass plate 3a, and a second adhesive layer 4b interposed between the other surface (rear surface) of the resin plate 2 and the second glass plate 3b. EVA is a suitable material for the adhesive layers 4a, 4b, but the material is not limited to this, and PVB or other thermoplastic adhesive materials can also be used.

[0032] The adhesive layers 4a and 4b have a thickness of 0.1 mm to 1.0 mm, more preferably 0.2 mm to 0.8 mm. The adhesive layers 4a and 4b have an area larger than that of the glass plates 3a and 3b and approximately equal to that of the resin plate 2.

[0033] As shown in FIG. 2, this method includes a preparing step S1, a clamping step S2, a binding step S3, a transporting step S4, an encapsulating step S5, and a joining step S6.

[0034] In the preparation step S1, as shown in FIG. 3, one resin plate 2, two glass plates 3a and 3b, and two sheet-like adhesive layers 4a and 4b are prepared.

[0035] In the preparation step S1, a first glass plate 3a and a first adhesive layer 4a are superimposed on the front surface of the resin plate 2. At this time, the first adhesive layer 4a is interposed between the first glass plate 3a and the resin plate 2. Also, in the preparation step S1, a second glass plate 3b and a second adhesive layer 4b are superimposed on the rear surface of the resin plate 2. At this time, the second adhesive layer 4b is interposed between the second glass plate 3b and the resin plate 2.

[0036] As shown in Fig. 3, in the preparation step S1, it is desirable to laminate these components so that the center line CL1 of the resin plate 2, the center lines CL2 and CL3 of the glass plates 3a and 3b, and the center lines CL4 and CL5 of the adhesive layers 4a and 4b are aligned. Note that Fig. 3 shows the center lines CL1 to CL5 in the long-side direction of the resin plate 2, the glass plates 3a and 3b, and the adhesive layers 4a and 4b, but it is also desirable to laminate these components so that the centers (center lines) are aligned in the short-side direction as well.

[0037] As a result, a laminate (temporary laminate) LM is formed by laminating the resin plate 2, the two glass plates 3a and 3b, and the two adhesive layers 4a and 4b.

[0038] 4 and 5, in this laminate LM, each of the sides 2a to 2d of the resin plate 2 is positioned outside each of the sides 3a1 to 3a4 of the first glass plate 3a. Similarly, each of the sides 2a to 2d of the resin plate 2 is positioned outside each of the sides of the second glass plate 3b. Furthermore, each of the sides of each of the adhesive layers 4a, 4b is positioned outside each of the sides 3a1 to 3a4 of the first glass plate 3a and the second glass plate 3b.

[0039] 5, the distance D1 between the short sides 2a, 2b of the resin plate 2 and the short sides 3a1, 3a2 of the first glass plate 3a is, for example, 0 mm or more and 5 mm or less. The distance D2 between the long sides 2c, 2d of the resin plate 2 and the long sides 3a3, 3a4 of the first glass plate 3a is, for example, 0 mm or more and 5 mm or less. The same applies to the distances between the sides 2a to 2d of the resin plate 2 and the sides of the second glass plate 3b.

[0040] 6 and 7, in the clamping step S2, a pair of backing plates 5a, 5b and two release films 6a, 6b are superimposed on the laminate LM prepared in the preparation step S1. The backing plates 5a, 5b and the release films 6a, 6b are configured in a rectangular shape, but are not limited to this shape. The backing plates 5a, 5b and the release films 6a, 6b have areas larger than the area of ​​the laminate LM, i.e., the area of ​​the resin plate 2.

[0041] Hereinafter, of the two backing plates 5a, 5b, one backing plate 5a will be referred to as the "first backing plate," and the other backing plate 5b will be referred to as the "second backing plate." Furthermore, of the two release films 6a, 6b, one release film 6a will be referred to as the "first release film," and the other release film 6b will be referred to as the "second release film." The release films 6a, 6b are members that are peeled off together with the backing plates 5a, 5b to facilitate removal of the backing plates 5a, 5b from the laminate LM after the bonding step S6.

[0042] The backing plates 5a and 5b may be, for example, metal plates or glass plates. In this embodiment, soda-lime glass plates are used as the backing plates 5a and 5b. The thickness of the backing plates 5a and 5b is, for example, 3.0 mm or more and 10 mm or less.

[0043] The release films 6a and 6b are non-adhesive sheets, and specifically, PTFE, PFA, FEP, ETFE, PVDF, PCTFE, ECTFE, olefin, polyester, release-treated PET, etc. The thickness of the release films 6a and 6b is, for example, 0.02 mm or more and 1.0 mm or less.

[0044] In the clamping step S2, a first backing plate 5a is placed over the first glass plate 3a of the laminate LM. At this time, a first release film 6a is interposed between the first glass plate 3a and the first backing plate 5a. Also, a second backing plate 5b is placed over the second glass plate 3a of the laminate LM. At this time, a second release film 6b is interposed between the second glass plate 3a and the second backing plate 5b.

[0045] As shown in Fig. 6, in the clamping step S2, these components are overlapped so that the center line CL6 of the laminate LM, the center lines CL7 and CL8 of the backing plates 5a and 5b, and the center lines CL9 and CL10 of the release films 6a and 6b are aligned. Note that Fig. 6 shows the center lines CL6 to CL10 in the long side direction of the laminate LM, the backing plates 5a and 5b, and the release films 6a and 6b, but it is desirable to similarly align the centers (center lines) of these components in the short side direction as well.

[0046] As shown in FIG. 7, the clamping step S2 forms a clamping body CB that clamps the laminate LM between the first backing plate 5a and the second backing plate 5b.

[0047] As shown in Fig. 8, the holding body CB is configured in a rectangular shape having long and short sides when viewed in the stacking direction (in a plan view), but is not limited to this shape. As shown in Fig. 8, in the holding body CB, each side 5a1 to 5a4 of the first backing plate 5a is positioned outside each side of the laminate LM, i.e., each side 2a to 2d of the resin plate 2. Similarly, each side of the second backing plate 5b is positioned outside each side 2a to 2d of the resin plate 2.

[0048] 8, the distance D3 between the short sides 5a1, 5a2 of the first backing plate 5a in the clamping body CB and the short sides 2a, 2b of the resin plate 2 is, for example, 0 mm or more and 20 mm or less. Further, the distance D4 between the long sides 5a3, 5a4 of the first backing plate 5b and the long sides 2c, 2d of the resin plate 2 is, for example, 0 mm or more and 20 mm or less. The same applies to the distances between each side of the second backing plate 5b and each side 2a to 2d of the resin plate 2.

[0049] 8, the sides 6a1 to 6a4 of the first release film 6a are positioned outward from the sides 5a1 to 5a4 of the first backing plate 5a. Similarly, the sides of the second release film 6b are positioned outward from the sides of the second backing plate 5b.

[0050] The binding step S3 is a step of binding the backing plates 5a and 5b, the release films 6a and 6b, and the laminate LM in the holding body CB together with a band member.

[0051] 9 and 10 show a clamping body CB bound by a plurality of band members 7. The plurality of band members 7 are arranged at intervals in the long side direction (longitudinal direction) of the clamping body CB. The plurality of band members 7 are wrapped around the clamping body CB along the short side direction (transverse direction) of the clamping body CB.

[0052] A band made of synthetic resin is preferably used as the band member 7. In this embodiment, a polypropylene band is used as the band member 7, but the band member is not limited to this configuration.

[0053] In this embodiment, the clamping body CB is bound by three band members 7, but the number of band members 7 is not limited to this embodiment. When the clamping body CB is bound by three band members 7, it is preferable to virtually divide the clamping body CB into three equal parts in the longitudinal direction, for example, and bind each of the three divided parts with a respective band member 7.

[0054] 11 to 15 show the binding device 8 used in the binding step S3. The binding device 8 includes a base 9 on which the clamping body CB can be placed, a band supply unit 10 that supplies the band member 7 to the base 9, and fixing units 11a and 11b that fasten and fix the band member 7 that has been wrapped around the clamping body CB.

[0055] The surface plate 9 has a mounting surface 9a on which the clamp body CB is placed, and grooves 9b and 9c that open to the mounting surface 9a and allow the band member 7 to be electrically connected.

[0056] The placement surface 9a is a horizontal surface formed on the upper surface of the surface plate 9. The grooves 9b, 9c include a first groove 9b for leading the band member 7 upward from the lower side of the surface plate 9, and a second groove 9c for guiding the tip end 7a of the band member 7 so that it overlaps with the middle part of the band member 7. An opening 9d is formed between the first groove 9b and the second groove 9c for leading the band member 7 from below the surface plate 9 to above the surface plate 9.

[0057] The first groove 9b and the second groove 9c are formed on the same straight line. The opening 9d is a hole that penetrates the surface plate 9 at the position of the grooves 9b and 9c.

[0058] The band supply unit 10 is configured to sequentially supply the long band member 7 wound on a reel to the surface plate 9.

[0059] The fixing portions 11a, 11b include a first fixing portion 11a that tightens the band member 7 wrapped around the clamping body CB, and a second fixing portion 11b that cuts the band member 7 wrapped around the clamping body CB and thermally presses a portion of it.

[0060] The first fixing portion 11a is disposed between the base plate 9 and the band supply portion 10. The first fixing portion 11a is configured to tighten the band member 7 by contacting the middle portion of the band member 7 supplied from the band supply portion 10 to the base plate 9.

[0061] The second fixing portion 11b has fixing members 13 to 15 for fixing the band member 7, a cutting portion 15 for cutting the band member 7, and a heating portion 16 for heating the band member 7 (thermocompression bonding).

[0062] The fixing members 13 to 15 include a first fixing member 12, a second fixing member 13, and a third fixing member .

[0063] The first fixing member 12 is a plate-like member provided parallel to the mounting surface 9a at a position corresponding to the grooves 9b and 9c of the surface plate 9. The first fixing member 12 is disposed above the opening 9d, between the first groove 9b and the second groove 9c of the surface plate 9. The first fixing member 12 is disposed so that its upper surface is flush with the mounting surface 9a of the surface plate 9.

[0064] The first fixing member 12 is configured to be positionally changeable between a fixing position where it fixes the band member 7 together with the second fixing member 13 and the third fixing member 14, and a retracted position away from this fixing position.

[0065] 12, the first fixing member 12 has a contact surface 12a that contacts the band member 7 and a stopper 12b that contacts the end 7a of the band member 7. The contact surface 12a is disposed so as to face downward. The stopper 12b is formed by a protrusion that protrudes downward from the contact surface 12a.

[0066] 11 and 12, the second fixing member 13 is disposed below the first fixing member 12 within the range of the opening 9d of the base 9. The second fixing member 13 is configured to be able to move up and down so as to move towards and away from the first fixing member 12. The second fixing member 13 has a pressing portion 13a at its upper end that presses the band member 7. The pressing portion 13a, together with the first fixing member 12, can clamp the middle portion of the band member 7, thereby fixing the band member 7 to the first fixing member 12.

[0067] 12, the second fixing member 13 has a guide hole 13b at its midpoint, through which the band member 7 can be inserted. The guide hole 13b is formed below the pressing portion 13a. The guide hole 13b is a hole that penetrates the second fixing member 13, for example, along the horizontal direction.

[0068] 11 and 12, the third fixing member 14 is disposed below the first fixing member 12 and below the opening 9d of the surface plate 9. The third fixing member 14 is configured to be able to move up and down so as to move towards and away from the first fixing member 12. The third fixing member 14 is provided at a position distant from the second fixing member 13 in the horizontal direction.

[0069] 12, the third fixing member 14 has, at its upper end, a pressing portion 14a that presses the band member 7. The pressing portion 14a, together with the first fixing member 12, clamps the end portion 7a of the band member 7, thereby fixing the band member 7 to the first fixing member 12.

[0070] 11 and 12, the cutting unit 15 is disposed below the first fixing member 12 and below the opening 9d of the base 9. The cutting unit 15 is configured to be able to move up and down while being in close proximity to the second fixing member 13. As shown in FIG. 12, the cutting unit 15 has a cutting blade 15a at its upper end. The cutting unit 15 can cut the middle portion of the band member 7 inserted through the guide hole 13b by moving the cutting blade 15a so that it passes through the guide hole 13b of the second fixing member 13 from below to above.

[0071] 11 and 12, the heating unit 16 is disposed below the first fixing member 12 and below the opening 9d of the base 9. The heating unit 16 is provided between the second fixing member 13 and the third fixing member 14. The heating unit 16 is configured to be able to move up and down so as to move towards and away from the first fixing member 12.

[0072] 12, the heating unit 16 has, at its upper end, a pressing unit 16a that presses the band member 7. The pressing unit 16a can heat the middle portion of the band member 7 while sandwiching the band member 7 together with the first fixing member 12.

[0073] An example of performing the binding step S3 using the binding device 8 having the above configuration will be described below.

[0074] As shown in FIG. 11 , the band member 7 is supplied from the band supply unit 10 to the surface plate 9 via the first fixing unit 11a. The band member 7 is inserted into the guide hole 13b of the second fixing member 13 at the second fixing unit 11b and is led out above the mounting surface 9a of the surface plate 9 through the opening 9d and the first groove 9b of the surface plate 9. The band member 7 is wrapped around the clamping body CB placed on the mounting surface 9a of the surface plate 9 along the short side thereof. In this state, the tip end 7a of the band member 7 is inserted below the clamping body CB through the second groove 9c. The wrapping of the band member 7 around the clamping body CB above the surface plate 9 may be performed by an operator or by a wrapping device (not shown).

[0075] 11 and 12, the tip end 7a of the band member 7 is in contact with the stopper 12b of the first fixing member 12. In this state, below the tip end 7a of the band member 7, the middle portion of the band member 7 is positioned so as to overlap with the tip end 7a.

[0076] The second fixing member 13 rises from the standby position to fix the band member 7 to the first fixing member 12. As shown in FIG. 12 , the pressing portion 13a of the second fixing member 13 comes into contact with the band member 7. As a result, the pressing portion 13a, together with the contact surface 12a of the first fixing member 12, clamps the band member 7. In other words, the band member 7 is fixed to the contact surface 12a of the first fixing member 12.

[0077] Next, the first fixing portion 11a performs a tightening operation on the band member 7. As a result, the band member 7 is pulled by the first fixing portion 11a, and is thereby wound more firmly around the clamping body CB.

[0078] Thereafter, the third fixing member 14 rises from the standby position to press the tip end 7a of the band member 7 against the middle portion of the band member 7. As shown in Fig. 13, the pressing portion 14a of the third fixing member 14 passes through the opening 9d of the base 9 from the lower side to the upper side, and presses the middle portion of the band member 7 against the contact surface 12a of the first fixing member 12 in a state where it is overlapped with the tip end 7a.

[0079] In this way, the fastening and fixing of the band member 7 by the first fastening portion 11a and the second fastening portion 11b (the fastening step) is completed.

[0080] As shown in FIG. 14, the cutting unit 15 rises from the standby position to cut off the intermediate portion of the band member 7. The cutting blade 15a of the cutting unit 15 passes through the opening 9d of the surface plate 9. The cutting blade 15a then passes from below to above the guide hole 13b of the second fixing member 13. As a result, the cutting blade 15a cuts off the intermediate portion of the band member 7 that protrudes from the guide hole 13b. As a result of this cutting, a new end 7b is formed in the band member 7. Hereinafter, the end 7a of the band member 7 that contacts the stopper 12b of the first fixing member 12 will be referred to as the "first end," and the new end 7b formed by the cutting will be referred to as the "second end."

[0081] 15, the heating unit 16 rises from the standby position to overlap and thermocompress the first end 7a and the second end 7b of the band member 7. The pressing unit 16a of the heating unit 16 passes through the opening 9d of the base 9 from below to above, and lifts the second end 7b of the band member 7 to bring it into contact with the first end 7a.

[0082] Thereafter, the pressing portion 16a of the heating unit 16 presses the first end 7a and the second end 7b of the band member 7 against the contact surface 12a of the first fixing member 12. The pressing portion 16a heats the second end 7b while clamping the first end 7a and the second end 7b of the band member 7 together with the contact surface 12a of the first fixing member 12. As a result, the second end 7b is welded to the first end 7a. In the binding step S3, the above steps are repeated multiple times to bind the clamped body CB with multiple band members 7.

[0083] In the transport step S4, the clamped body CB bound by the band member 7 is transported to a position where the encapsulation step S5 can be performed. In the transport step S4, the clamped body CB is transported by a conveyer such as a roller conveyor, or the clamped body CB is suction-transported by a vacuum pad, etc. The method of transporting the clamped body CB is not limited to this embodiment.

[0084] As shown in FIG. 16, in the sealing step S5, the clamped body CB bound by the band member 7 is sealed in an airtight bag 18. The airtight bag 18 is made of rubber or a film such as polypropylene. A spacer member may be sealed between the clamped body CB and the airtight bag 18. For example, a breathable nonwoven fabric (breather cloth) can be used as the spacer member. In the sealing step S5, a tube 20 connected to a pump 19 is inserted into the opening of the airtight bag 18, and the opening of the airtight bag 18 is fixed to the tube 20 with a fixture 21. This completes the sealing of the clamped body CB in the airtight bag 18.

[0085] The joining process S6 is a process in which the sandwiching body CB is subjected to a joining process in which it is heated under a negative pressure atmosphere, thereby obtaining a glass resin laminate (composite plate material) 1 in which glass plates (glass-based plate material) 3a, 3b and a resin plate (plate-shaped material) 2 are joined together.

[0086] In the bonding step S6, the airtight bag 18 with the sandwiching body CB sealed therein is placed in the furnace of the autoclave device 17. Thereafter, the inside of the furnace is pressurized, and the pump 19 is operated to discharge the gas inside the airtight bag 18 and create a negative pressure inside the airtight bag 18. As a result, as shown in FIG. 17, the airtight bag 18 shrinks and comes into close contact with the backing plates 5a and 5b of the sandwiching body CB. During this process, the backing plates 5a and 5b are pressed by the airtight bag 18, pressing the glass sheets 3a and 3b of the laminate LM against the resin sheet 2. The pressure inside the furnace is set to 0.3 MPa or more and 1.5 MPa or less, and the air pressure inside the airtight bag 18 is set to, for example, 1000 Pa or less (preferably 100 Pa or less).

[0087] Thereafter, while the laminate LM is pressed by the backing plates 5a and 5b inside the airtight bag 18, the airtight bag 18 is heated from the outside to melt the adhesive layers 4a and 4b included in the laminate LM (heating step). The heating temperature varies depending on the type of the adhesive layers 4a and 4b, but is set to, for example, about 80°C to 150°C.

[0088] In the joining step S6, the resin plate 2 expands significantly due to heating. The degree of expansion of the resin plate 2 is greatest in the direction of its long sides. However, the short sides 2a and 2b, which are the longitudinal ends of the resin plate 2, expand in a range inside the ends (short sides 5a1 and 5a2) of the backing plates 5a and 5b. In other words, the short sides 2a and 2b of the resin plate 2 do not extend beyond the short sides of the backing plates 5a and 5b. This expansion of the resin plate 2 prevents the ends 2a and 2b of the resin plate 2 from contacting the airtight bag 18. In other words, the ends 2a and 2b of the resin plate 2 are pressed by the airtight bag 18, thereby preventing misalignment between the resin plate 2 and the glass plates 3a and 3b.

[0089] After the bonding step S6 is completed, the backing plates 5a, 5b and the release films 6a, 6b are removed from the holder CB. In this manner, the glass resin laminate 1 is manufactured in which the glass plates 3a, 3b are bonded to the resin plate 2 by the adhesive layers 4a, 4b.

[0090] According to the manufacturing method of the composite plate material (glass resin laminate 1) of this embodiment described above, by binding the clamping body CB with a band member 7 in the binding process S3, it is possible to prevent misalignment between the resin plate 2 and the glass plates 3a, 3b in the conveying process S4 and the encapsulating process S5.

[0091] The present invention is not limited to the configuration of the above-described embodiment, nor is it limited to the above-described effects. The present invention can be modified in various ways without departing from the spirit of the present invention.

[0092] In the above embodiment, the glass resin laminate 1 is illustrated as being formed by laminating glass plates 3a, 3b on both the front and back sides of the resin plate 2, but the present invention is not limited to this configuration. The glass resin laminate 1 may be formed by laminating a glass plate on only one side of the resin plate 2, for example. Furthermore, a printed layer or other functional material layer may be provided between the resin plate 2 and the glass plates 3a, 3b.

[0093] In the above embodiment, the binding step S3 is described in which multiple band members 7 are wrapped around the short side of the clamping body CB at intervals from the long side of the clamping body CB, but the present invention is not limited to this configuration. In the binding step S3, the band members 7 may also be wrapped around the short side of the clamping body CB in the long side direction. This allows the band members 7 to be arranged so that they intersect the short side direction and the long side direction, making it possible to more firmly bind the clamping body CB. [Explanation of symbols]

[0094] 1. Glass-resin laminate (composite board) 2. Resin plate (plate-shaped material) 2a Side of resin plate (short side) 2b Side of resin plate (short side) 2c Side of resin board (long side) 2d Side of resin plate (long side) 3a First glass plate (glass-based plate material) 3b Second glass plate (glass-based plate material) 5a First backing plate 5a1 Side of first backing plate (short side) 5a2 Side of first backing plate (short side) 5a3 Side of first backing plate (long side) 5a4 Side of first backing plate (long side) 5b Second backing plate 7 Band material 8 Restraint Device 9 Surface Plate 9a Placement surface 9b First groove 9c Second groove 10. Band Supply Department 11a First fixed part 11b Second fixing part 17 Autoclave equipment 18 airtight bags CB clamping body LM laminate S1 Preparation process S2 Clamping process S3 binding process S5 Encapsulation process S6 Joining process

Claims

1. a preparation step of preparing a laminate including a glass-based plate material and a plate-shaped material as a laminate; a clamping step of arranging a pair of backing plates on both the front and back sides of the laminate to obtain a clamped body; A bonding process is performed on the sandwiching body by heating under a negative pressure atmosphere to obtain a composite plate material in which the glass-based plate material and the plate-shaped material are bonded together. The clamping member may further include a binding step of binding the clamping body with a band member. In the joining step, the joining process is performed on the sandwiched body bound by the band member.

2. The sandwiching body is configured in a rectangular shape having long sides and short sides when viewed in the stacking direction, The method for manufacturing a composite plate material according to claim 1, wherein in the binding step, the clamping body is bound by wrapping the plurality of band members around the clamping body in the short side direction, spaced apart in the long side direction.

3. The method for manufacturing a composite plate according to claim 1 or 2, wherein the band member is made of a polypropylene band.

4. In the binding step, the clamping body is bound by the band member using a binding device, the binding device includes a base on which the clamping body can be placed, a band supply unit that supplies the band member to the base, and a fixing unit that wraps and fastens the band member wrapped around the clamping body, 3. The method for manufacturing a composite plate material according to claim 1, wherein the surface plate has a mounting surface on which the clamping body can be placed, and a groove portion that opens onto the mounting surface and allows the band member to pass through.

5. The backing plate is configured in a rectangular shape, Each side of the backing plate is located outside each side of the stack, further comprising an enclosing step of enclosing the sandwiching body bound by the band member in an airtight bag, The method for manufacturing a composite plate according to claim 2, wherein in the joining step, the airtight bag in which the sandwiching body is enclosed is placed in an autoclave, and the sandwiching body is subjected to the joining treatment.

6. The plate-shaped material includes a synthetic resin plate having a thickness of 0.01 mm or more and 20 mm or less, the glass-based plate material is laminated on both the front and back sides of the plate-shaped material via adhesive layers, The method for manufacturing a composite plate according to claim 1 or 2, wherein the glass-based plate has a thickness of 0.7 mm or less.

7. A sandwiching body comprising a laminate including a glass-based plate material and a plate-shaped material as a laminate, and a pair of backing plates arranged on both the front and back sides of the laminate, A clamping body is formed by binding the laminate and the backing plate together with a band member.

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