JPH10278213A - Apparatus for producing composite laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a manufacturing apparatus suitable for mass production in an industral scale. SOLUTION: An electromagnetic wave heating part 3 has upper and lower electrode plates 32, 36 applying high frequency voltage to the laminate raw material C on a carried-into laminate placing plate 54, a silicone rubber plate interposed between the upper and lower electrode plates 32, 36, a laminate surrounding member 33 supporting the peripheral edge part of the silicone rubber plate, a first cylinder apparatus 321 raising and lowering the upper upper electrode plate 32, a second cylinder apparatus 331 raising and lowering the laminate surrounding member 33 and a third cylinder apparatus 341 raising and lowering a truck 5. The laminate raw material C placed on the laminate placing plate 54 comes into contact with the upper and lower electrode plates 32, 36 through the silicone rubber plate 32 and the laminate placing plate 54 in such a state that the truck 5 is positioned between the upper and lower electrode plates and a hermetically closed space is formed around the laminate raw material C by the silicone rubber plate and a pressure regulating means 38 reducing the pressure in the hermetically closed space is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite laminate in which a glass plate or a transparent synthetic resin plate is formed in a plurality of layers with an adhesive layer interposed therebetween.

[0002]

2. Description of the Related Art A composite laminate is a material obtained by combining a plurality of materials having different properties, and a composite having a characteristic superior to that of a single material is obtained. Currently, various fields are actively researching, and many of them have already been put to practical use. Among such composite laminates, plate-like composite laminates are widely known as tempered glass, and greatly benefit not only in industrial life but also in general daily life. doing.

[0003] Conventionally, a plate-like composite laminate as described above has
An adhesive is applied to the surface of a predetermined material (substrate), and another substrate is superimposed on the substrate to which the adhesive is applied and then naturally cured, or a forced curing treatment by external heating is performed. However, such a method requires a long time to obtain a product, and not only has a low productivity, but also when external heating is performed, heat reaches the adhesive in the laminate. Since it has to pass through the layer of the base material before heating, there is a problem that the heating efficiency for the adhesive is deteriorated and the base material may be adversely affected by heat.

Therefore, in recent years, a film made of a synthetic resin having thermoplasticity is used as an adhesive, and a laminate is formed by interposing the film-like adhesive between the base materials to form an electric vibration such as a high frequency. There has been proposed a method for producing a plate-shaped composite laminate in which the adhesive in the laminate is heated and melted by using the adhesive to exert an adhesive function on the film-like adhesive.

As a method for producing a plate-like composite laminate utilizing such electric vibration, Japanese Patent Application Laid-Open Nos. 3-34850, 3-36663, and 62-873 have been disclosed.
No. 25, JP-A-6-293076, JP-A-6-293076
Japanese Patent Application Laid-Open Nos. 293077, 6-298549 and 6-336909 are known.

[0006]

The above-mentioned publications describe the principle of applying electromagnetic wave heating to a laminate in which a film-like adhesive is sandwiched between base materials. There is no disclosure of suitable applications, and there is therefore a lot of room for research on the production of plate-like composite laminates on an industrial scale.

In the above-mentioned conventional method, when a transparent composite laminate is produced by laminating a transparent glass or a transparent synthetic resin plate, air bubbles often occur in the adhesive layer. In addition to deteriorating the appearance as a body, the refractive index of light in that portion becomes different from that in other portions, and there is a problem that the quality of the composite laminate in optical applications is reduced.

Therefore, in the invention described in Japanese Patent Application Laid-Open No. 3-34850, a heat treatment is performed while removing bubbles by applying an electromagnetic wave to the laminate in a reduced pressure state. However, it is difficult to completely remove the bubbles even if the method is performed, and in particular, there is a problem that the bubbles remain at the edges of the laminate.

It is to be noted that the air bubbles are generally formed by trapping the outside air during the laminating operation of the transparent glass or the like and the adhesive layer. It is considered that by overheating the edge of the laminate, a part (for example, moisture) of the adhesive layer at the edge is gasified, whereby air bubbles are particularly likely to be generated at the edge of the laminate.

The present invention has been made in view of the above circumstances, and has as its object to provide an apparatus for manufacturing a composite laminate suitable for mass production on an industrial scale. Another object of the present invention is to provide an apparatus for manufacturing a composite laminate that can reliably eliminate residual air bubbles.

[0011]

According to the first aspect of the present invention,
Laminate materials obtained by interposing a film-like adhesive between each of a plurality of laminates are subjected to electromagnetic wave heating, and the laminates are bonded to each other by heating and melting the film-like adhesive to form a composite laminate. An apparatus for manufacturing a composite laminate for manufacturing a body is characterized by comprising an electromagnetic wave heating unit for applying a high frequency to the laminate raw material in a closed space in a non-pressurized state.

According to the present invention, since the high frequency is applied to the raw material of the laminate in the non-pressurized state (non-pressed state) in the electromagnetic wave heating section, the film adhesive melted by heating by applying the high frequency voltage is: In the molten state, a large pressure is not applied, which does not impair the flowability of the molten adhesive, and therefore, the bubbles that are trapped inside the adhesive and have increased pressure due to the temperature rise by high frequency heating You can move smoothly with the force generated at this time,
Bubbles in the adhesive easily escape to the outside.

According to a second aspect of the present invention, in the first aspect of the present invention, the electromagnetic wave heating section includes a closed space forming means for forming the closed space and a closed space formed by the closed space forming means. It is characterized by comprising a pair of opposed electrodes for holding the loaded laminated body material and applying a high-frequency voltage thereto.

According to the present invention, the laminate raw material is loaded into the closed space by the closed space forming means while being sandwiched between the pair of counter electrodes.

The third aspect of the present invention provides the first or second aspect.
In the invention described above, a pressure adjusting means for adjusting the atmospheric pressure in the closed space is provided.

According to this invention, the laminated material is sandwiched between the pair of voltages, and the high frequency is applied, and the pressure in the closed space is reduced by the pressure adjusting means, so that the laminated material is present in the molten adhesive. Bubbles are sucked into the closed space under reduced pressure, thereby removing the bubbles.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the pressure adjusting means sets the inside of the closed space to a reduced pressure environment when applying a high frequency to the laminate raw material.
And a second pressure adjusting means for completing the application of the high frequency and returning the closed space to normal pressure and then returning the inside of the closed space to a reduced pressure environment. It is.

According to the present invention, by setting the inside of the closed space to a reduced pressure environment by the first pressure adjusting means while the high frequency heating is being applied to the raw material of the laminate, it is caused by the air formed between the laminates. Air bubbles are removed by suction,
Even after air bubbles are completely removed by raising the temperature of the film adhesive by returning the decompressed environment to the normal pressure environment, even if decomposition gas bubbles are generated due to thermal decomposition of the adhesive, these air bubbles are generated. The second pressure adjusting means re-establishes the reduced-pressure environment and is sucked into the closed space, whereby the composite laminate obtained is free of both air bubbles and decomposition gas bubbles.

Incidentally, the first pressure adjusting means and the second pressure adjusting means may be separate adjusting means, respectively. Adjusting means, initially as first pressure adjusting means,
Next, it may be used as a second pressure adjusting means.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the closed space forming means includes a mounting plate on which the laminate raw material is mounted, and a mounting plate on the mounting plate. A sealing sheet covering the raw material of the laminate placed from above, a frame attached to an upper peripheral portion of the sealing sheet, and a frame elevating means for elevating and lowering the frame. The counter electrode is composed of an upper electrode plate and a lower electrode plate that are in contact with the laminate raw material via the sealing sheet body and the mounting plate, and an electrode plate lifting / lowering unit that raises / lowers the upper electrode plate is provided. It is a feature.

According to the present invention, the frame is lowered by driving the frame elevating means in a state where the laminated body material is mounted on the mounting plate, and the lower surface thereof is brought into contact with the mounting plate.
The laminate raw material is covered with the sealing sheet, and is placed in the closed space. In this state, by lowering the upper electrode by driving the electrode plate lifting / lowering means, the laminate raw material is sandwiched between the pair of counter electrodes via the sealing sheet and the mounting plate, and receives a high frequency application from the counter electrodes. Become like

As described above, the use of the sealing sheet makes it easy to insert / remove the laminated material between the opposing electrodes by the raising / lowering operation, and to seal the laminated raw material. The space can be easily formed.

According to a sixth aspect of the present invention, in the invention of any of the third to fifth aspects, the pressure adjusting means comprises:
A vacuum pump, a main suction pipe connecting the vacuum pump to the closed space, an outside air introduction pipe branched from the main suction pipe, and a control valve provided on the outside air introduction pipe. It is characterized by having.

According to the present invention, by operating the vacuum pump, the air in the sealed space is suctioned and removed through the suction main pipe, and the inside of the sealed space becomes a reduced pressure environment, and the operation of the vacuum pump is stopped. By opening the control valve,
Outside air is introduced into the closed space through the control valve, the outside air introduction pipe, and the main suction pipe, whereby the closed space is returned to the original normal pressure environment. As described above, by appropriately combining the operation and stoppage of the vacuum pump with the operation of opening and closing the control valve, the air pressure environment in the closed space can be easily adjusted.

According to a seventh aspect of the present invention, there is provided an apparatus for manufacturing a composite laminate in which a film-like adhesive is interposed between respective laminates of a plurality of laminates to produce a composite laminate. A laminating section for laminating the laminated raw material via an adhesive, an electromagnetic wave heating section for applying electromagnetic wave heating to the laminated raw material obtained in the laminated section to heat and melt the film adhesive, and And a carriage for carrying the electromagnetic wave heating unit from the laminating unit while the electromagnetic wave heating unit is mounted on the laminate mounting plate. An upper electrode plate and a lower electrode plate for applying a voltage; a sealing sheet interposed between the upper electrode plate and the lower electrode plate; a frame supporting a peripheral portion of the sealing sheet; First lifting means for lifting and lowering the electrode plate; A second elevating means for elevating the frame body, and a third elevating means for elevating the carriage or the lower electrode plate, wherein the dolly is located between the upper and lower electrode plates, (3) By driving the lifting / lowering means, the laminate raw material placed on the laminate placement plate comes into contact with the upper electrode plate and the lower electrode plate via the sealing sheet and the laminate placement plate, It is characterized in that a closed space is formed around the laminate raw material by the sealing sheet body, and a pressure reducing means for reducing the pressure in the closed space is provided.

According to the present invention, the laminate raw material formed by laminating the laminate material and the film-like adhesive on the laminate-mounting plate of the cart in the placing section carries the cart into the electromagnetic wave heating section. As a result, a state is provided between the upper electrode plate and the lower electrode plate via the sealing sheet body and the stack mounting plate. By causing the first to third elevating means to perform a predetermined drive in this state, the laminate raw material placed on the laminate mounting plate is moved upward through the sealing sheet body and the laminate mounting plate. A sealed space is formed around the raw material of the laminate by the sealing sheet while being in contact with the electrode plate and the lower electrode plate.

After the closed space has been formed, a high-frequency voltage is applied to each of the electrode plates by driving the pressure reducing means to reduce the pressure in the closed space to a reduced pressure environment. Then, the upper and lower laminates are adhered to each other, thereby obtaining a composite laminate. Since the inside of the sealed space is in a decompressed environment, bubbles mixed in the melt of the film-like adhesive are sucked out into the sealed space, so that there are almost no bubbles between the upper and lower laminated materials. A state is established, and adhesion failure due to the presence of bubbles is avoided.

As described above, according to the present invention, a laminate material is prepared by performing a laminating operation of a laminating material and a film-like adhesive on a laminating member mounting plate of a cart in a laminating part. The trolley on which the raw materials are placed is carried to the electromagnetic wave heating unit, and the first to the first laminates are kept in a state where the raw materials of the laminate are mounted on the trolleys.
By causing the third lifting / lowering means to perform predetermined lifting / lowering, the laminate raw material is placed between the upper electrode plate and the lower electrode plate in a state where a closed space is formed around the laminate raw material. Since it is in a state of being abutted and arranged via a plate, as in the conventional case, the prepared laminate raw material is transferred to the transporting means, and the laminated raw material is transferred to the electromagnetic wave heating unit by this transporting means. The troublesome operation of transferring and further loading the transferred laminate raw material into the electromagnetic wave heating unit is not required.

According to an eighth aspect of the present invention, in accordance with the seventh aspect of the present invention, the carriage has an annular frame having a through space at a central portion, and the laminated body mounting plate is configured to close the through space. An elevating platform which is provided on the upper part of the annular frame, and which is elevated by the driving of the third elevating means while the carriage is mounted on the electromagnetic wave heating section; And the first and second elevating means are mounted on the gate structure, and driven by a third elevating means in a state where the cart is positioned in the portal structure. By lowering the elevating platform, the lower electrode plate fits into the through space, the lower surface of the stacked body mounting plate abuts on the upper surface of the lower electrode plate, and the first elevating means and the second elevating means are driven. Upper electrode plate By lowering the pre-laminate enclosing member is characterized in that the lower surface of the frame member is configured to abut with close contact to the upper surface of the mounting plate the laminate.

According to the present invention, the lower surface of the laminate raw material is placed on the laminate mounting plate by moving the truck on which the laminate raw material is mounted on the laminate mounting plate onto the elevating gantry in the gate-shaped structure. The lower surface faces the lower electrode plate via the plate, and the upper surface faces the upper electrode plate via the sealing sheet. In this state, by driving the third lifting / lowering means to lower the lifting / lowering pedestal, the through space of the annular frame fits into the lower electrode plate, and the lower surface of the stacked body mounting plate comes into contact with the upper surface of the lower electrode plate. By driving the second lifting / lowering means to lower the frame, the frame comes into contact with and adheres to the upper surface edge of the laminate mounting plate. The sheet body swells relatively upward. In this state, by driving the first lifting / lowering means to lower the upper electrode plate, the lower surface of the upper electrode plate comes into contact with the sealing sheet body, whereby the laminate raw material is placed on the sealing sheet body and the laminate mounting body. The plate is sandwiched between the upper electrode plate and the lower electrode plate via the plate.

As described above, according to the present invention, the portal structure is provided in the electromagnetic wave heating section to support the first and second elevating means, and the bogie is provided in the portal structure. Is provided, and the laminate raw material is sealed by the descent of the elevating platform by driving the third elevating means and the lowering of the frame and the upper electrode plate by the driving of the first and second elevating means. Since it is sandwiched between the upper electrode plate and the lower electrode plate via the stacked body mounting plate, the presence of the gate-shaped structure and the lifting / lowering base makes it complicated by driving the first to third lifting / lowering means. The structure of the operating electromagnetic wave heating part is simple and structurally stable. In addition, since the circular frame is provided on the cart, the laminate raw material can easily come into contact with the lower electrode plate via the laminate mounting plate when the cart is moved up and down, which also contributes to simplification of the structure. ing.

The ninth aspect of the present invention is the seventh aspect or the eighth aspect of the present invention.
In the described invention, the first to third lifting means are formed by a cylinder device.

According to the present invention, the first to third lifting means have a simple structure by employing the cylinder device.

The invention according to claim 10 is the invention according to claims 4 to 9
In the invention described in any one of the above, the sealing sheet body is made of silicone rubber.

According to the present invention, the silicone rubber is a material having excellent elasticity, elastic deformation, toughness and heat resistance. Such a rubber is used as a sealing sheet which frequently undergoes elastic deformation repeatedly in a heated state. Are suitable.

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a process diagram showing one embodiment of a manufacturing process of a composite laminate to which a manufacturing apparatus of the present invention is applied. As shown in this figure, the manufacturing process of the composite laminate to which the manufacturing apparatus of the present invention is applied includes a stacking process P1, a deaeration / adhesion process P2, an air supply process P3, and a curing process P4. I have.

The laminating step P1 is a step of laminating by laminating the film-like adhesive B between the laminating materials A. The laminating process P1 is performed on the lowermost laminating material A placed on the carriage 5 described later. The adhesive B is laminated, and the laminated material A is further laminated thereon, and this operation is sequentially repeated to form the laminated material A on the uppermost layer.
Are laminated to obtain a laminate raw material C. Such a laminating operation is usually performed manually by an operator, but the laminating material A and the film-like adhesive B are alternately supplied onto an appropriate mounting table by using a predetermined conveying means, and the laminating operation is automatically performed. It may be made to perform it.

Then, the laminate raw material C formed in the above-mentioned laminating step P1 is degassed and adhered in the
I send it to 2. The carriage 5 may be manually driven, or may be configured to be self-propelled by driving a mounted drive motor or driving around a chain or the like.

The deaeration / adhesion step P2 is performed by using the laminate material C
Is placed in a vacuum state to remove air remaining at the boundary between the laminate material A and the film adhesive B in the laminate raw material C while applying a high frequency to the laminate raw material C. The film adhesive B is heated and melted by the dielectric heating, and the film adhesive B is melted by the melting.
To exhibit the function as an adhesive, film-like adhesive B
This is a step of bonding the laminated materials A laminated to each other with each other. Through this step, the upper and lower laminated materials A are in close contact with each other via the film adhesive B without any gap. In this step, a high-frequency welding machine 31 described later (FIG. 2)
Is used.

In the air supply step P3, after the deaeration process and the high-frequency application process are continued for a predetermined time in the deaeration / adhesion process P2, the vacuum environment in which the laminate material C is located is returned to the original normal pressure. This is the step of returning. The laminate raw material C becomes a composite laminate D as a final product through the air supply step P3. The processing in the air supply step P3 is performed in the high-frequency welding machine 31. By passing through the air supply step P3, the bubbles in the film adhesive B remaining at the periphery, particularly at the four corners of the laminate material C, which could not be removed in the deaeration / adhesion step P2, disappear. Thus, the composite laminate D, which is the final product, is a non-defective product having no air bubbles.

The curing step P4 is a step in which the composite laminate D obtained in the air supply step P3 is left in the high frequency welding machine 31 in a state where no high frequency is applied for a predetermined time. In this step, the laminate raw material C is used to secure the bonding state between the laminate material A and the film-like adhesive B, and the composite laminate D
become. Then, the carriage 5 on which the composite laminate D is mounted is moved out of the high-frequency welding machine 31 so that the composite laminate D
From the high frequency welding machine 31 is carried out.

The composite laminate D thus obtained is
It is shipped as a product as it is, or is commercialized by being cut to a predetermined size. In this case, the composite laminate D is introduced into a cutting step (not shown) set downstream of the curing step P4. Then, in this cutting step, it is cut into a predetermined size. By applying the water jet cutting machine in the cutting step, the composite laminate D is cut accurately and reliably despite being formed by laminating hard and soft materials.

As the laminate A, glass or a synthetic resin plate is used. As a synthetic resin for a synthetic resin plate, polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile butadiene styrene copolymer (AB)
S), polymethyl methacrylate (PMMA), polyethylene terephthalate, polyamide (PET), polyacetal (POM), polycarbonate (PC), polyphenylene terephthalate (PPE), polybutylene terephthalate (PBT), polysulfone (PSF),
Polyether sulfone (PES), polyphenylene sulfide (PPS), polyamide imide (PAI),
Examples thereof include polyether amide (PEI), polyether ether ketone (PEEK), polyimide (PI), and polytetrafluoroethylene.

Examples of the film adhesive B include ethylene-vinyl acetate copolymer (EVA), modified EVA, synthetic rubber, polyurethane, PE, PP, PV
C, those manufactured using thermoplastic resins such as polyvinyl butyral (PVB) and ionomer resins as raw materials are employed. A film adhesive (B) is obtained by molding any of these thermoplastic resins into a film (thickness of several μm to 1 mm) according to a conventional method. It is also possible to use a film obtained by reacting and curing a reactive hot melt adhesive.

Of the above, modified EVA is particularly effective as film adhesive B. This modified EVA is EVA
Alternatively, it is a composition comprising a saponified product thereof and a copolymer of an acrylic acid ester or a vinyl ester and an unsaturated carboxylic acid, and is excellent as an adhesive for laminated glass. Mersen G "
It is marketed under the trademark name.

The reactive hot-melt adhesive is obtained by reacting and curing a hot-melt adhesive having a functional group through the functional group, for example, by reacting an excess polyisocyanate with a polyol. The resulting moisture-curable adhesive can be mentioned. The prepolymer reacts with water (moisture) to form a three-dimensional crosslinked structure, thereby forming a tough film.

The apparatus used in each of the above steps will be described below in detail with reference to FIGS. FIG. 2 is a partially cutaway perspective view showing the entire configuration of one embodiment of the manufacturing apparatus 1 according to the present invention. 2 and FIG. 3 and FIG. 4 to be referred to later, the XX direction in the drawing is the front-rear direction,
The Y-Y direction is referred to as the width direction, particularly the -X side is referred to as the upstream side, the + X side is referred to as the downstream side, the -Y side is referred to as the left side, and +
The Y side is called the right side.

As shown in FIG. 2, an apparatus 1 for producing a composite laminate comprises a laminate 2 having a laminate material A and a film adhesive B alternately laminated to produce a laminate raw material C; An electromagnetic wave heating unit 3 that is provided adjacent to the downstream side and converts the laminate raw material C from the stacking unit 2 into a composite laminate D; and an electromagnetic wave heating unit that is provided downstream of the electromagnetic wave heating unit 3 and The storage material 4 for temporarily storing the composite laminate D from Step 3 until it is carried out of the system, and the laminate raw material C between the laminate 2 and the electromagnetic wave heating unit 3 and between the electromagnetic wave heating unit 3 and the storage unit 4 (Composite laminated body D) is mounted and provided so as to be able to travel, and has a basic configuration including a carriage 5. Then, the laminating process P1 is performed in the laminating unit 2, and the degassing / adhering process P2 and the air supplying process P3 are performed in the electromagnetic wave heating unit 3.

The laminated portion 2 has a rectangular base 20 in plan view including four columns 21 erected on the floor F and a table plate 22 supported by the columns 21. And a pair of rails 23 laid. The rail 23 is laid so as to communicate with rails 23, 35, and 43, which will be described later, laid on the electromagnetic wave heating unit 3 and the storage unit 4. The carriage 5 is guided by these rails 23, 35, and 43. It is possible to reciprocate between the laminating section 2 and the electromagnetic wave heating section 3 and between the electromagnetic wave heating section 3 and the storage section 4, and the laminating material C mounted on the carriage 5 is moved by the reciprocating movement. 3 and sequentially stored in the storage unit 4 to perform predetermined processing.

The bogie 5 is provided at a rectangular frame 51 having a rectangular shape in plan view, a pair of wheel shafts 52 in the front-rear direction crossing the rectangular frame 51 in the width direction, and at both ends of the wheel shafts 52. The wheels 53 guided by the rails 23, the stacked body mounting plate 54 fixed to the upper surface of the rectangular frame 51, and substantially along the outer peripheral edge of the stacked body mounting plate 54. A plurality of locking means 55 provided at equal pitch
It is comprised including. A silicon rubber plate 54b is laminated on the surface of the laminate mounting plate 54, thereby absorbing a slight bending or unevenness of the laminate raw material C placed on the laminate mounting plate 54 and C is protected. In the present embodiment, the carriage 5 does not have self-propelled means such as a drive motor, and therefore, the carriage 5 is configured to travel by pushing by an operator.

The rectangular frame 51 has a through space 51a which is surrounded by four surrounding frames and penetrates in the up-down direction.
a is attached to the rectangular frame 51 so as to cover the upper side from above. The penetration space 51a has a vertical and horizontal dimension of the laminated material A.
Is set to be larger than the vertical and horizontal dimensions.

The laminate mounting plate 54 is formed of a metal plate, and a laminate A and a film adhesive B are laminated on the surface of the laminate mount plate 54 through a silicon rubber plate 54b in a predetermined number of layers. The peripheral portion 54a of the stacked body mounting plate 54 is slightly protruded from the peripheral portion of the rectangular frame 51, and a plurality of locking means 55 are provided at substantially equal pitches along the protruded peripheral portion 54a. Is provided.

As shown in FIG. 3, the locking means 55 includes a bracket 55a fixed by welding or the like so as to protrude outward on the rear surface side of the peripheral portion 54a of the stacked body mounting plate 54, An actuator 55b attached to the back side of the bracket 55a, an operation rod 55c protruding upward from the actuator 55b through the bracket 55a, and an operation rod 55
and a locking claw 55d attached to the upper end of the operating rod 55c so as to extend in the radial direction of the operating rod 55c.

The actuator 55b is configured to move the operation rod 55c up and down and to rotate around the axis. When the operation rod 55c is protruded upward, the locking claw 55d is set to the lock release posture parallel to the peripheral edge 54a of the stacked body mounting plate 54, and when the operation rod 55c is lowered, When the tip of the locking claw 55d is substantially 9
It is set to the locking posture rotated by 0 °.

The electromagnetic wave heating unit 3 includes a high frequency welding machine 31 provided adjacent to and downstream of the laminating unit 2 and a high frequency oscillator 37 for supplying high frequency to the high frequency welding machine 31.
And pressure adjusting means 38 for adjusting the pressure in the bonding space.

The high frequency welding machine 31 includes a pair of inverted U-shaped portal structures 31a erected on the floor F in the width direction.
And a ceiling plate 31d interposed between the beam members 31b above the gate-shaped structure 31a, and a horizontal cylinder which is raised and lowered by driving a first cylinder device (electrode plate lifting / lowering means) 321 supported by the ceiling plate 31d. The disposed upper electrode plate 32, the horizontally disposed laminated body surrounding member 33 which is moved up and down by driving a second cylinder device (frame elevating means) 331 supported by the ceiling plate 31d, and the portal structure 31a Of the horizontal arrangement, which is guided by each of the columns 31c and rises and falls by driving the third cylinder device 341; and a lower electrode plate 36 provided on the floor F facing the upper electrode plate 32. It is provided with.

FIGS. 3 and 4 are partially cutaway perspective views showing an embodiment of a main part of the high frequency welding machine 31. FIG.
The cart 5 on which the laminate material C is mounted is a high-frequency welding machine 3
FIG. 4 shows a state immediately after being introduced into the rack 1 and a state in which a closed space surrounding the laminate raw material C is formed on the laminate mounting plate 54 of the cart 5. 5 is a sectional view taken along line WW of FIG. 3, and FIG. 6 is a sectional view taken along line ZZ of FIG.

As shown in FIGS. 2 to 4, the upper electrode plate 32 is formed of a rectangular metal plate in plan view in which the vertical and horizontal dimensions are set slightly larger than the maximum vertical and horizontal dimensions of the laminate raw material C. An intermediate plate 32b having the same planar shape as the upper electrode plate 32 is provided on the upper portion thereof through a predetermined number of connection rods 32a. On the other hand, the first cylinder device 321 includes a pair of cylinders 322 in the front-rear direction fixed to the ceiling plate 31d (FIG. 1) in a penetrating state, and a piston that protrudes and retracts from each cylinder 322 by hydraulic pressure from a hydraulic unit (not shown). Rod 32
The lower end of each piston rod 323 is connected to the intermediate plate 32b. Therefore, by making the intermediate plate 32b protrude and retract by the driving of the first cylinder device 321,
The upper electrode plate 32 includes an intermediate plate 32b and a connecting rod 32a.
Will go up and down via

On the surface of the intermediate plate 32b, four slide rods 324 are provided upright at four corners. Each of these slide rods 324 is slid through the ceiling plate 31d as shown in FIG. 2, thereby preventing the upper electrode plate 32 from oscillating in the width direction and the front-rear direction. Has become stable.

The laminate surrounding member 33 includes a rectangular annular frame 33a having a rectangular shape in plan view, and a flange 33 projecting outward from the lower edge of the rectangular annular frame 33a.
b, a flat silicon rubber plate 33c stretched on the back side of the rectangular annular frame 33a so as to cover the through space.
Are formed. Such a silicon rubber plate 33
The thickness dimension of the flange portion 33b is set such that c is flush with the bottom surface of the flange portion 33b in a state of being stretched over the rectangular annular frame 33a.

The vertical and horizontal dimensions of the flange portion 33b are set to be the same as the vertical and horizontal dimensions of the peripheral portion 54a of the stacked body mounting plate 54, whereby the stacked body surrounding member 33 is placed on the stacked body mounting plate 54. Are overlapped, the end faces of the flange portion 33b and the peripheral edge portion 54a are flush with each other.

The second cylinder devices 331 are provided above the four corners of the rectangular annular frame 33a.
Each second cylinder device 331 is provided with a predetermined intermediate connection member 31.
e, a cylinder 332 fixed to the ceiling plate 31d so as to extend in the vertical direction via the e, and a piston rod 333 protruding downward from the cylinder 332 and protruding and retracting in the vertical direction with respect to the cylinder 332. It is formed.

Then, the lower end of each piston rod 333 is connected to the four corners of the rectangular annular frame 33a, whereby the laminated body surrounding member 33 is brought into a horizontal state by synchronously protruding and retracting each piston rod 333 from the cylinder 332. It is made to go up and down while maintaining.

The laminated body surrounding member 33 has intake pipes 33d provided at four corners of the rectangular annular frame 33a and substantially at the center on the long side. Each intake pipe 33
As for d, the tip end side is projected outward from the rectangular annular frame 33a, and the base end side is the silicone rubber plate 33a.
c, the opening of which faces the surface of the stacked body mounting plate 54 below. These suction pipes 33d are connected to the suction main pipe 38c as shown in FIG.
The pressure adjusting means 38 is connected via a suction pipe 33d and a suction main pipe 38c between a sealed space S (FIG. 5), which will be described later, formed by the lowering of the suction pipe.

The lifting frame 34 has guide projections 34a projecting toward the respective columns 31c at the four corners thereof, while the respective columns 31c extend in the vertical direction corresponding to the respective guide projections 34a. Has a guide groove 310c extending,
Guide grooves 310 corresponding to the respective guide projections 34a
c in a sliding contact state with the lifting platform 34
Can move up and down while being guided by the guide groove 310c.

As shown in FIGS. 5 and 6, the elevating pedestal 34 has a through window 34b penetrating vertically at the center thereof, and the lower electrode plate 36 is fitted in the through window 34b. It is in the state of being crowded.

The third cylinder device 341 includes a cylinder 34 fixed to each column 31c so as to extend in the vertical direction.
2 and project upward from this cylinder 342,
And it is formed with a piston rod 343 provided to be able to protrude and retract in the vertical direction. The elevating gantry 34 is supported by the upper end of each piston rod 343, and moves up and down by the piston rod 343 appearing and retracting.

The elevating platform 34 has a pair of rails 35 laid on the upper surface corresponding to the pair of rails 23 laid on the laminating section 2, and the elevating platform 34 is located at the upper limit height position. In the raised state, the rails 23 and 35 face each other at the same height level. Therefore, by raising the lifting platform 34 to the upper limit height position with the upper electrode plate 32 and the laminate surrounding member 33 raised, the carriage 5 on the laminate 2 is moved between the laminate 2 and the electromagnetic wave heater 3. It can be made to come and go.

The lower electrode plate 36 is provided on the floor F in a frame surrounded by the four columns 31c of the electromagnetic wave heating unit 3 so as to face the upper electrode plate 32. The lower electrode plate 36 has the same plane dimensions as the upper electrode plate 32, and the vertical and horizontal dimensions are set smaller than the vertical and horizontal dimensions of the through space 51a of the truck 5. Then, in a state where the carriage 5 is moved to a predetermined electromagnetic wave heating position on the rail 35 of the electromagnetic wave heating unit 3, the lower electrode plate 36 is located immediately below the through space 51a and moves up and down by driving the third cylinder device 341. The disposition position is set so that the gantry 34 is fitted into the through space 51a by descending.

Then, with the carriage 5 being sent to the electromagnetic wave heating position of the electromagnetic wave heating section 3, the third cylinder device 34
The lowering of the elevating gantry 34 by lowering the piston rod 343 by the driving of the
The through space 51 a is fitted to the lower electrode plate 36, and the lower surface of the stacked body mounting plate 54 contacts the surface of the lower electrode plate 36 by continuing the lowering of the piston rod 343. I am trying to become. By this contact, the high frequency from the high frequency oscillator 37 is transferred to the lower electrode plate 3.
6, the stack mounting plate 54 serves as an electrode plate for the stack raw material C on the stack mounting plate 54.

Then, the trolley 5 on which the laminate raw material C is placed on the laminate mounting plate 54 is sent to the electromagnetic wave heating position of the elevating gantry 34 and the elevating gantry 34 is located at the lowered position. Then, the laminate surrounding member 33 is lowered by the driving of the second cylinder device 331, and the flange 33 b abutted on each other by the operation of the locking means 55 and the peripheral edge 54 a of the laminate mounting plate 54 are mutually locked. By,
As shown in FIG. 5, the silicon rubber plate 33c is elastically deformed by the laminate raw material C and swells upward, whereby the back side of the peripheral portion of the silicon rubber plate 33c and the silicon rubber plate of the laminate mounting plate 54 An annular closed space S is formed between the peripheral portion of 54b and the upper surface side.

The pressure adjusting means 38 includes a vacuum pump 38
a, a suction main pipe 38c provided between the vacuum pump 38a and the suction pipe 33d, an outside air introduction pipe 38d branched from the suction main pipe 38c, and the outside air introduction pipe 38
d is provided with a control valve 38b.
Then, the closed space S is formed, and the control valve 38
By driving the vacuum pump 38a with b closed, the air in the closed space S is removed by suction, so that the closed space S has a vacuum environment.

In the present invention, the high frequency from the high frequency oscillator 37 is generated in a state where the inside of the closed space S is in a vacuum environment and the lower surface of the upper electrode plate 32 is in contact with the upper surface of the silicon rubber plate 33c when the lower surface thereof is in contact. Applied to each of the electrode plates 32 and 36,
The upper and lower laminates A are bonded to each other by the heating and melting of the film adhesive B, so that the bubbles contained in the melted film adhesive B are sucked toward the closed space in a vacuum state. It has become.

In the present invention, the upper electrode plate 3
A sensor (not shown) detects that the second cylinder 2 has come into contact with the upper surface of the silicon rubber plate 33c, and stops driving the first cylinder device 321 based on the detection signal, or releases the hydraulic pressure to release the silicon. Only the own weight of the upper electrode plate 32 is applied to the rubber plate 33c, and the pressing process is not actively performed on the laminate material C.

The reason for this is that when the raw material C during heating is pressed with a large force, the molten material around the air remaining in the melted film adhesive B is strongly pressed under high pressure. In this state, it is difficult for the air to move by pushing away the strongly pressed melt, and therefore, even if the sealed space S is in a vacuum environment, This is because bubbles are not effectively removed.

As shown in FIG. 1, the storage section 4 includes a gantry 40 including four columns 41 and a table plate 42 supported by the columns 41, and the table plate 42
It is composed of a pair of rails 43 provided in the width direction. The table plate 42 is set at the same height level as the table plate 22 of the stacking unit 2, and each rail 43 is laid and set so as to correspond to each rail 35 of the lifting gantry 34 at the ascending position. In this state, the lifting gantry 3 is set in the ascending position.
The carriage 5 on the rail 35 of the storage unit 4 can be moved onto the rail 43 of the storage unit 4.

FIG. 7 is a block diagram showing one embodiment of the high-frequency oscillator 37 applied to the manufacturing apparatus 1 of the present invention. As shown in the figure, the high-frequency oscillator 37 includes a control circuit 371 for controlling the manufacturing apparatus 1 in an integrated manner, and an operation unit 3 for inputting various operation data to the control circuit 371.
72 and a high frequency generator 373 for generating high frequency power. The control circuit 371 includes the operation unit 37
Based on the operation data input via the control unit 2, the driving of each unit and the supply of power to the high-frequency generation unit 373 are controlled.

In this embodiment, the high-frequency oscillator 37
Is designed to generate a high frequency of 13.56 MHz, but the present invention is not limited to a frequency of 13.56 MHz, and can be used for heating electromagnetic waves from several MHz to several GHz. High frequencies or microwaves in the range are applicable.

The operation unit 372 includes a power switch 37
2a, a first cylinder switch 372b for switching between driving and stopping the first cylinder device 321, a second cylinder switch 372c for switching between driving and stopping the second cylinder device 331, and a second switch for switching between driving and stopping the third cylinder device 341. 3 cylinder switch 372d, locking means 5
5, a switch 372e for locking means for switching between locking and unlocking operations, a switch 372f for vacuum pump for switching between driving and stopping the vacuum pump 38a, and a control valve 38b.
And a control valve switch 372g for switching between open and closed states.

The operation signal from the power switch 372a is output to the control circuit 371 as a control signal. When the power switch 372a is turned on, the operation of the high frequency generator 373 is started, and when it is turned off, the operation of the high frequency generator 373 is stopped.

An operation signal from the first cylinder switch 372b is also output to the control circuit 371. When the first cylinder switch 372b is operated in one direction (projection side), the piston rod 323 projects and the upper electrode plate 3
2 is lowered, and when operated in the other direction (immersion side), the piston rod 323 is immersed and the upper electrode plate 32 is raised. The same applies to the second and third cylinder switches 372c and 372d, and the operation in one direction or the other direction causes the stacked body surrounding member 33 and the lift base 34 to move up and down, respectively.

When the locking means switch 372e is operated in one direction (locking side), the locking claw 55d is operated by the driving of the actuator 55b to the locking side, and when the locking claw 55d is operated in the other direction (locking releasing side). The locking claw 55d operates to the unlocking side. Also, a vacuum pump switch 3
When 72f is turned on, the vacuum pump 38a is driven, and when it is turned off, it stops. When the control valve switch 372g is turned on, the control valve 38b opens, and when the control valve switch 372g is turned off, the control valve 38b closes.

The high frequency generator 373 includes a power supply circuit 37
4, a high-frequency generation circuit 375 that obtains electric power from the power supply circuit 374 to generate a high frequency,
5 and a matching circuit 376 provided on the output side of the control circuit 5. The power supply circuit 374 converts, for example, a commercial power supply of 220 V into a DC power supply of a predetermined level. The high-frequency generation circuit 375 is a self-excited oscillation type high-frequency generation circuit that obtains a predetermined level of DC voltage from the power supply circuit 374 and generates a required level of high-frequency energy.

Further, the matching circuit 376 is a circuit for matching the high frequency generating circuit 375 and the laminate material C set between the pair of electrode plates 32 and 36, and
6a, a matching capacitor (not shown) is provided. The transformer 376a has an input side coil L1 and an output side coil L
The output side coil L2 has one end connected to the upper electrode plate 32 and the other end connected to the lower electrode plate 36 and the ground.

When setting the supply power, the tuning conditions may be sequentially shifted. Alternatively, if the power supply level is fixed, the power supply circuit 374 and the high-frequency generation circuit 375 may have respective predetermined ratings. When the high frequency is intermittently supplied, the heat given during the driving time is diffused into the film adhesive B during the pause time, so that the temperature distribution is made uniform, that is, the uniform heating is performed. Will be

According to the above configuration of the high-frequency oscillator 37, first, when the laminate material C is supplied to the electromagnetic wave heating unit 3, the third cylinder switch 372d is operated to the piston rod immersion side. As a result, the lifting platform 34 on which the carriage 5 is mounted on the rail 35 is lowered, and the lower surface of the stacked body mounting plate 54 comes into contact with the upper surface of the lower electrode plate 36. In this state, the second cylinder switch 372c is operated to the piston rod protruding side. As a result, the laminate surrounding member 33 descends, and as shown in FIG. 5, the rectangular annular frame 33a of the laminate surrounding member 33 comes into contact with the peripheral edge 54a of the laminate placing plate 54, and the laminate placing plate The silicon rubber plate 33c is elastically deformed so as to bulge upward by the laminate raw material C on 54, whereby an annular closed space S is formed between the silicon rubber plate 33c and the laminate mounting plate 54. .

Then, the sealed space S is placed on the
The locking means 55 is driven by the operation of the locking means switch 372e to the locking side in the state in which is formed, and the stacked flange portion 33b and the peripheral edge portion 54a of the stacked body mounting plate 54
The closed state of the closed space S is ensured by locking the contact state with the closed space S.

Next, the vacuum pump switch 372f is turned on, and the air in the sealed space S is sucked by the driving of the vacuum pump 38a, so that the sealed space S becomes a vacuum environment. In this state, the first cylinder switch 372b
Is operated on the piston rod descending side, whereby the upper electrode plate 32 descends and comes into contact with the upper surface of the silicon rubber plate 33c. This contact state is detected by a sensor (not shown), and the first cylinder switch 372b is automatically switched to the neutral position by a control signal from the control circuit 371 based on the detection signal. The state is set in a state where pressure is not applied to the laminate raw material C via the plate 33c.

When the contact of the upper electrode plate 32 with the silicon rubber plate 33c is confirmed, the vacuum pump switch 372f is turned on, and a high-frequency voltage is applied to the upper electrode plate 32 and the lower electrode plate 36. The application state of the high-frequency voltage is continued for a predetermined time, during which the film-like adhesive B of the laminate material C is heated and melted to bond the upper and lower laminate materials A to each other.

Then, when the application of the high-frequency voltage for a predetermined time is completed, the control valve 38b is opened, and the outside air introduction pipe 38d,
Air is supplied into the closed space S through the main suction pipe 38c and the suction pipe 33d. Thereby, the inside of the sealed space S becomes a normal pressure environment, and the normal pressure environment is continued as a curing period of a predetermined time. By doing so, the temperature of the laminate material C is raised by high-frequency heating, but the environmental temperature of the closed space S, which was low due to the vacuum state, rises due to the heat transfer from the laminate material C to the air. Since the temperature of the heated air is conversely transferred to the peripheral portion of the laminate material C, the peripheral portion of the laminate material C is heated, thereby melting the peripheral portion of the laminate material C. Bubbles in the adhesive expand, and the expansion becomes a driving force and moves in a direction of low resistance, that is, in a direction from the edge of the laminate material C to the outside, and remains at the edge of the laminate material C. Bubbles in the film adhesive B are removed.

After the curing period has elapsed, the upper electrode plate 32 and the laminate surrounding member 33 are raised by a switch operation of a predetermined switch, and at the same time, the lifting stand 34 is also raised, so that the laminated body placed in the open state is opened. The composite laminate D on the placing plate 54 is moved to the storage section 4 by the movement of the carriage 5, and then carried out to the next step.

Hereinafter, the laminated material A and the film adhesive B
Of the composite laminate D is sequentially manufactured by repeating the supply of the composite laminate D onto the carriage 5, the transfer to the electromagnetic wave heating unit 3, the switch operation described above, and the transfer of the obtained composite laminate D to the storage unit 4. .

By the way, the heat value (W /
cm ² ) is represented by P = ((5/9) / 10 ¹² ) · f · E ² · ε · tan δ. Here, f is the frequency of the high frequency, E is the strength of the electric field (V / cm), ε is the dielectric constant, tanδ is the dielectric loss angle, and (ε × tanδ) is particularly called the dielectric loss coefficient. I have. From the above equation, the calorific value P is proportional to the square of the strength of the electric field (E ² ) and the loss coefficient (ε × tan δ), and those having a loss coefficient of 0.01 to 1 are particularly preferable as the adhesive. .

In this embodiment, the laminated material A
Is used as the glass, and the glass is a film adhesive B
Since the loss coefficient is much smaller than that, the high-frequency energy applied to the laminate C hardly affects the laminate A, and is consumed by the self-heating of the film adhesive B,
Thereby, only the film adhesive B is heated and melted,
There is no thermal effect on the glass as in the case of external heating.

FIG. 8 is a sectional view showing an example of the film adhesive used in the present invention. As shown in this figure, a film adhesive B having a three-layer structure in which an adhesive layer b is laminated on the front and back of a thin core film a is used. In this embodiment, a PET film having a thickness of 36 μm is used as the core film a.
An ET film in which an adhesive layer b made of modified EVA is laminated on the front and back sides is employed.

By using the three-layered film adhesive B having such a core film a, the film adhesive B becomes very strong and easy to handle. In the adhesive application process, the application operation of the adhesive can be performed simply by putting the film-like adhesive B on the laminated material A without performing a troublesome operation such as coating, and the adhesive application can be performed reliably and quickly. This is extremely effective in easily applying the adhesive to the laminate A.

FIG. 9 is a sectional view showing an embodiment of a composite laminate D employing such a film adhesive B. As shown in FIG. As shown in this figure, the composite laminate D is in a state in which the upper and lower laminates A are firmly bonded to each other by a three-layer film adhesive B.

As described in detail above, the production apparatus 1 of the present invention
Is composed of a laminating section 2, an electromagnetic wave heating section 3 and a storage section 4. In the laminating section 2, the laminating material A and the film-like adhesive B are laminated on the laminate mounting plate 54 of the cart 5 to form a laminated body. The raw material C is formed, and the laminated body raw material C is
The composite laminate D is formed by being sent to the electromagnetic wave heating unit 3 by the movement of the electromagnetic wave and heated by the electromagnetic wave. After the composite laminate D is sent out to the storage unit 4 by the movement of the carriage 5, the composite laminate D is sequentially carried out of the system. Therefore, by supplying the laminate material A and the film-like adhesive B onto the cart 5 of the laminate section 2 at a predetermined time pitch, the cart 5 is sequentially moved to the electromagnetic wave heating section 3 and the storage section 4 each time. The composite laminate D is formed on the trolley 5 only by itself, which is extremely useful in mass-producing the composite laminate D on an industrial scale.

In particular, in the electromagnetic wave heating section 3, the laminate raw material C formed on the laminate mounting plate 54 is transferred to the electromagnetic wave heating section by the carriage 5, so that the silicon rubber plate 33 is moved.
c and the upper and lower electrode plates 32 and 36 via the stacked body mounting plate 54. In this state, the first to third lifting / lowering means 321 and 331 and 341 are driven by a predetermined drive. Is performed, the laminate raw material C placed on the laminate placement plate 54 comes into contact with the upper electrode plate 32 and the lower electrode plate 36 via the silicon rubber plate 33c and the laminate placement plate 54. At the same time, a sealed space S is formed around the laminate raw material C by the silicon rubber plate 33c.

After the closed space S is formed,
By applying a high-frequency voltage to each electrode plate by driving the pressure reducing means to reduce the pressure in the enclosed space S and apply a high-frequency voltage to each electrode plate, the film adhesive B of the laminate material C is heated and melted to bond the upper and lower laminate materials A to each other. Then, a composite laminate is obtained. Since the inside of the sealed space S is in a decompressed environment, air bubbles mixed in the melt of the film adhesive B are sucked out into the sealed space S, whereby almost no space is formed between the upper and lower laminated materials A. Air bubbles do not exist, and poor adhesion due to the presence of air bubbles can be avoided.

FIG. 10 is a process chart showing a second embodiment of the manufacturing process of the composite laminate to which the present invention is applied. As shown in this figure, in the second embodiment, in the air supply process P3
A re-aeration step P3 ', in which the air supplied between the heating step P4 and the curing step P4 is removed by suction, and the reduced-pressure environment is restored, and a re-supply step P3 "for returning the reduced-pressure environment to the original normal pressure environment are provided. In the re-deaeration step P3 ', an operation of returning the closed space S (FIG. 6) once set to the normal pressure environment to the reduced pressure environment is performed by the pressure adjusting means 38 (FIG. 1). )
Is performed by closing the once opened control valve 38b and driving the vacuum pump 38a. In this way, the air in the sealed space S is sucked through the suction main pipe 38c by the driving of the vacuum pump 38a, and the inside of the sealed space S again becomes a reduced pressure environment, and the film-like adhesive on the periphery of the laminate material C is formed. Perfection of removal of bubbles generated in B can be expected.

Then, in the second embodiment, the air supply process P
The reason why the re-deaeration step P3 'was interposed between the curing step P3 and the curing step P4 is that if the temperature of the edge portion of the laminate raw material C becomes too high in the supply step P3 than the predetermined temperature, the film-form The heat-melting state of the peripheral portion of the adhesive B is excessively advanced, and a part of the adhesive B may be decomposed to generate a decomposed gas, and bubbles resulting from the decomposed gas may be formed at the edge of the laminate material C. However, this is to remove the bubbles.

The tendency of the temperature of the peripheral portion of the film adhesive B to be too high in the air supply step P3 tends to occur when the melting point of the film adhesive B is higher than that of a standard adhesive. This is because the temperature raising process in the air supply process P3
As described above, the heat transfer using the air introduced into the closed space S as a medium is often performed, and this heat transfer is performed in a state in which strict control is difficult to be performed. This is considered to be because if this heat transfer heat treatment is to be performed on the target, the initial temperature tends to be set higher.

Specifically, when the composite laminate D is a laminated glass used indoors, the film adhesive B often has a melting point of about 70 ° C. In the case of manufacturing, the laminated glass for outdoor use may rise to near 80 ° C. when exposed to the hot summer sunshine, and to prevent the melting of the film adhesive B by this, the laminated glass for outdoor use Is usually a film adhesive B having a melting point of about 100 ° C.

Film adhesive B having such a high melting point
Is adopted, it is necessary to raise the temperature of the sealed space S to about 100 ° C. in the deaeration / adhesion step P2.
3, the temperature may exceed 120 ° C., which is the temperature at which the edge of the film adhesive B is thermally decomposed. In this case, decomposition gas is generated from the film adhesive B, and air bubbles are generated at the edge of the composite laminate D. May be formed. The re-deaeration step P3 'of the second embodiment is employed to remove such decomposed gas bubbles.
Thus, the closed space S is set to the reduced pressure environment again, whereby the air bubbles in the film adhesive B are sucked and removed in the direction of the closed space S.

Note that the above-mentioned decomposed gas bubbles are not generated only in the case of the film adhesive B having a high melting point (for example, the film adhesive B having a melting point of 100 ° C. used for outdoor laminated glass). Of the film adhesive B having a low melting point (for example, the film adhesive B having a melting point of 70 ° C. used for the above laminated glass for indoor use), the temperature rise in the air supply step P3 is remarkable and greatly exceeds 90 ° C. In such a case, decomposition gas bubbles are generated. Therefore, the employment of the re-deaeration step P3 'for removing the decomposed gas bubbles is not limited to the case where the film adhesive B having a high dissolution temperature is used, and the use of the film adhesive B having a low dissolution temperature is used. It can be adopted also in the case.

When the air bubble removal processing for a predetermined time in the re-deaeration step P3 'is completed, the vacuum pump 38a (FIG. 2)
Is stopped and the control valve 38b is opened,
As a result, the outside air is supplied to the outside air introduction pipe 38 d and the suction main pipe 3.
8c into the closed space S through the re-supply process P
3 "is performed to set the normal pressure environment in the closed space S. Then, after the curing process P4 similar to the first embodiment in which the normal pressure environment is continued for a predetermined time is performed, the composite laminate D is formed.
Is drawn out of the electromagnetic wave heating unit 3.

As described above, the composite laminate D of the second embodiment
In the manufacturing process, the re-aeration step P3 'is interposed between the air supply step P3 and the curing step P4, and the temperature of the film adhesive B becomes too high in the air supply step P3 in which temperature control is difficult. In order to remove the decomposed gas bubbles caused by the above, it is possible to more finely remove fine bubbles that are easily generated at the peripheral portion of the composite laminate D, and the defect rate is small,
And it is extremely effective in producing a composite laminate D having a high commercial value.

The present invention is not limited to the above embodiment, but also includes the following contents.

(1) In the above embodiment, the carriage 5
Is moved by the third cylinder device 341 in a state where the material C is transferred onto the lifting platform 34, thereby lowering the lifting platform 34 so that the laminate raw material C on the laminate mounting plate 54 passes through the laminate mounting plate 54. The lower electrode plate 36 is in contact with the upper surface, but instead of this, the lower electrode plate 36 is raised, so that the laminate raw material C on the laminate mounting plate 54 Alternatively, the lower electrode plate 36 may be in contact with the lower electrode plate 36.

(2) In the above embodiment, the carriage 5
Is manually moved along the rails 23 between the stacking unit 2 and the electromagnetic wave heating unit 3 and between the electromagnetic wave heating unit 3 and the storage unit 4, but instead of self-propelled, moves on the carriage 5. Drive motor, or the stacking unit 2 to the storage unit 4
The trolley 5 may be moved without manual pushing, for example, by moving the trolley 5 along with the rotation of the chain stretched therebetween. This makes it possible to completely automate the operation of the manufacturing apparatus 1.

(3) In the above embodiment, the silicone rubber plate 33c is stretched over the laminated body surrounding member 33 provided above the carriage 5, and is driven by the second cylinder device 331. Silicon rubber plate 3 by descending
3c is placed over the laminate raw material C from above, but instead of this, it penetrates vertically through the center of the laminate mounting plate 54, and is set to a size larger than the plane dimension of the laminate raw material C. A silicon rubber plate is stretched so as to close the opening from above, and the elevating stand 34 and the lower electrode plate 36 are raised to seal the laminate material C between the silicon rubber plates. And upper electrode plate 3
2 and the lower electrode plate 36.

(4) In the above embodiment, the carriage 5
Rails 23, 35, 43 are laid on the gantry 20 of the stacking unit 2, the elevating gantry 34 of the electromagnetic wave heating unit 3, and the gantry 40 of the storage unit 4 to guide the movement of the trolley 5. It is not limited to using the rails 23, 35, 43 for the movement guide, but the rails 23, 35, 43
Instead of this, a guide groove may be recessed, and the carriage 5 may be moved by being guided by this guide groove.

(5) In the above embodiment, the silicone rubber plate 33c is used as the sealing sheet, but instead of the silicon rubber plate 33c, styrene butadiene rubber, isoprene rubber, butyl rubber, urethane rubber,
A rubber plate made of fluorine rubber or the like may be used.

(6) In the above embodiment, the silicon rubber plate 33
Spacers made of spheres or cylinders may be arranged at a predetermined pitch in an annular closed space S formed between the stacking member c and the stacked body mounting plate 54. In this way, the depression of the silicon rubber plate 33c in the closed space S toward the closed space S is reduced in a state where the pressure in the closed space S is reduced, and an air suction passage is secured in the closed space S.

(7) In the above embodiment, the sealed space S for applying electromagnetic wave heating to the laminate raw material C is composed of the silicon rubber plate 33c abutting on the rectangular annular frame 33a of the laminate surrounding member 33 and the carriage 5 The laminate material C is sandwiched between the silicon rubber plate 54b stretched on the laminate mounting plate 54 and the outer periphery of the laminate material C is formed. However, the present invention is not limited to the formation of the closed space S between the silicon rubber plates 33c and 54b.
This closed chamber may be set to a reduced pressure environment.

[0117]

【Example】

1. Test for confirming the effect of the apparatus of the present invention (a) Test in the case where the composite laminate is a laminated glass for indoor use (Example 1) A laminate material obtained by alternately laminating a laminate material and a film adhesive was used. After applying a high-frequency heating for a predetermined time in a reduced pressure environment, returning to a normal pressure environment and passing a predetermined curing period, no bubbles remain in the molten film adhesive (the effect of the method of the present invention). In order to confirm, an effect confirmation test of the method according to the first embodiment was performed using the manufacturing apparatus 1 described above. This test is performed when a laminated glass for indoor use using a film adhesive B having a low melting point as the composite laminate D is obtained. The content of the test is as follows.

Types of Laminating Material and Film Adhesive and Laminating Structure of Laminate Raw Material Two glass plates each having a thickness of 3 mm were employed as a laminating material, and the above-mentioned modified EVA was applied on both sides of a PET film as a film adhesive. The thickness of the laminated layer is 250μm
One so-called reinforced EVA film was employed. Modified EVA laminated on the front and back of this reinforced EVA film B1
Has a melting point of about 70 ° C. These materials are 91
Cut to 5 mm x 1830 mm to make them the same size, then lay one glass plate A 'on the lowermost layer, and layer a reinforced EVA film B' and another glass plate A 'on top of it. To obtain a laminated glass raw material D1 (FIG. 11) having a three-layer structure.

Test Procedure The laminated glass raw material D1 was placed on the laminate mounting plate 54 of the truck 5 shown in FIG.
Of the third cylinder device 3
The lifting platform 34 is moved down by the drive of the
4 was brought into contact with the lower electrode plate 36.

Then, the laminated body surrounding member 33 is lowered by driving the second cylinder device 331 to cover the laminated glass raw material D1 with the silicon rubber plate 33c, whereby the outer peripheral portion of the laminated glass raw material D1 is laminated with the silicon rubber plate 33c. An annular closed space S surrounded by the body mounting plate 54 is formed, and the upper electrode plate 32 is driven by the first cylinder device 321.
Was lowered, and the lower surface thereof was brought into contact with the upper surface of the silicon rubber plate 33c (the state shown in FIGS. 4, 6, and 11). After confirming this contact, the supply of the hydraulic pressure to the first cylinder device 321 was cut off so that a large compressive force was not applied to the laminated glass raw material D1.

FIG. 12 is an explanatory plan view showing a state in which the laminated glass raw material D1 is mounted between the upper and lower electrode plates 32 and 36. As shown in FIG. Air was sucked from six intake pipes 33d provided at substantially equal intervals. In this embodiment, the silicon rubber plates 33, 54
Prior to mounting the laminated glass raw material D1 in the space b, a plurality of cylindrical spacers S
1 (FIGS. 11 and 12), and the silicon rubber plate 33c
Is supported by the spacer S1, and the silicon rubber plate 33
This prevents c from clogging in the direction of the closed space S and blocking the air suction passage.

Next, the vacuum pump 38a (FIG. 1) was driven to suck and remove the air in the closed space S, and the closed space S was set to a reduced pressure environment. In this state, the high-frequency oscillator 37 is driven to apply a high-frequency voltage from the upper and lower electrode plates 32 and 36 to the laminated glass raw material D1 for a predetermined period of time. The glass sheets A 'thus adhered to each other via a reinforcing EVA film B'.

After the application of the high-frequency voltage to the laminated glass raw material D1 for a predetermined time is completed, the vacuum pump 38a
While the drive of FIG. 1 was stopped, the control valve 38b was opened to introduce air into the closed space S, and the closed space S was returned from the reduced pressure environment to the original normal pressure environment. After the continuation of the normal pressure environment for a predetermined time (curing period), the first cylinder device 321
To raise the upper electrode plate 32, and then drive the second cylinder device 331 to raise the stacked body surrounding member 33,
Subsequently, the lifting frame 34 is driven by the driving of the third cylinder device 341.
Was raised to return to the original height level, and thereafter, the cart 5 was manually moved to the storage section 4 to obtain a laminated glass E1 as a composite laminate D as a final product on the laminate mounting plate 54.
Then, the laminated glass E1 was visually observed to check whether air bubbles remained inside.

The temperature change of the closed space S from the start of the application of the high frequency to the laminated glass raw material D1 to the end of the curing period was measured over time.

As a comparative example, as a laminated glass raw material D1
After the completion of the electromagnetic wave heating, a test was performed to produce a laminated glass E2 without returning the inside of the closed space S to normal pressure. The procedure in this case is the same as the above except that the vacuum pump 38a is stopped and the control valve 38b is opened after the end of the curing period.

Test Conditions Test conditions according to the method of the present invention (Example 1) and test conditions (Comparative Examples 1 to 3) different from Example 1 were set as follows, respectively, and laminated glass E1 was obtained by the above-described procedure. , E2
Was manufactured.

First, in the first embodiment, after setting the degree of vacuum in the closed space S to 730 mmHg, the supply current to the upper electrode plate 32 is initially controlled to 5.0 A, and this state is continued for 120 seconds. After that, the current was reduced to 4.0 A, and the electromagnetic wave heating was continued for 60 seconds. And 4.0A
After the electromagnetic wave heating for 60 seconds, the operation of the vacuum pump 38a was stopped, and the control valve 38b was opened, thereby returning the pressure in the closed space S to normal pressure. Then, the closed space S
The laminated glass E1 was taken out after a curing period in which the inside temperature was reduced to approximately 50 ° C.

When the laminated glass raw material D1 was sandwiched between the upper and lower electrode plates 32 and 36, the upper glass plate 32 did not press the laminated glass raw material D1. Therefore, the surface pressure received by the laminated glass raw material D1 is approximately 1 kgf / cm ² .

Next, in the first comparative example, the above-mentioned surface pressure was set to 4 kgf / cm ² , and the other operations were the same as those in the first embodiment.

In Comparative Example 1, after the degree of vacuum in the closed space S was set to 730 mmHg, the upper electrode plate 3
The supply current to 2 was set to 6.0 A, which was slightly larger than that of Example 1 throughout, and this state was continued for 180 seconds.
The current supply to the upper electrode plate 32 was stopped, and the temperature was kept at the initial level of vacuum until the temperature in the closed space S became approximately 50 ° C. Further, the laminated glass raw material D1 is composed of the upper and lower electrode plates 32, 3
6, the surface pressure of the laminated glass raw material D1 in the state of being sandwiched between
3 kgf / cm ² when depressurized, 4 k when pressurized by electrode plate
gf / cm ² . Other operations were performed in the same manner as in Example 1.

In Comparative Example 2, the high-frequency heating conditions (current supply conditions to the anode current) were the same as in Example 1, and the sealed space S was continuously depressurized 180 seconds after the start of high-frequency heating. Environment. In Comparative Example 3, both the conditions of the high-frequency heating and the conditions of the closed space S were the same as those of the example, but the pressurization by the electrode plate was continued after elapse of 180 seconds.

Test Results Table 1 shows the test results for the above Example 1 and Comparative Example.
Table 1 shows the temperature changes in the closed space S of Example 1 and Comparative Example 1 respectively.

[0133]

[Table 1]

As can be seen from Table 1, in Example 1, no bubble was present at the edge of the obtained laminated glass E1, whereas in any of Comparative Examples 1 to 3, the edge of the laminated glass E1 was obtained. The presence of small bubbles was observed in the part.

Although the reason is not clear, in the first embodiment, as shown in FIG. 13, the sealed space S was rapidly returned from the vacuum environment to the normal pressure environment after the elapse of 180 seconds. Flows into the closed space S, to which the convection heat and the transfer heat have not been transmitted, is heated by the convection heat and the transfer heat due to the presence of the air. The melted adhesive layer (modified EVA) of the reinforced EVA film B 'at the end portion transmitted from the outside to the outside becomes easier to flow, and the bubbles formed on the edge of the laminated glass E1 by this heating increase. It is considered to be.

That is, when the adhesive layer at the end of the laminated glass E1 becomes softer and flows more easily, the movement of the bubbles due to the expansion causes the adhesive to move toward the softer edge, thereby causing the edge to move toward the edge. It is considered that the arriving air bubbles escape toward the closed space S.

Therefore, unless the operation of returning the inside of the closed space S to the normal pressure environment is performed as in Comparative Examples 1 and 2, a sharp rise in the temperature of the edge portion of the laminated glass E1 does not occur. Not done.

Further, as in Comparative Example 3, even if the sealed space S is returned to the normal pressure environment after the elapse of 180 seconds, the surface pressure of the laminated glass E1 received from the upper electrode plate 32 and the lower electrode plate 36 is large. It is considered that the flow state of the melted adhesive is hindered by the surface pressure, whereby the movement of the bubbles becomes difficult and the bubbles do not escape toward the closed space S.

(B) Test when the composite laminate is an outdoor laminated glass (Example 2) The periphery of the composite laminate D is manufactured by manufacturing the composite laminate D by the method according to the second embodiment of the present invention. An outdoor laminated glass E2 as shown in FIG. 14 was manufactured by the method of the second embodiment in order to confirm that air bubbles caused by the film-like adhesive did not remain in the portion. Laminated glass raw material D
As Example 2, three glass plates A 'similar to those in Example 1 and two high melting point EVA films B "sandwiched between these glass plates A' were used. It has a higher degree of crosslinking than the reinforced EVA film B 'used in Example 1 and has a melting point of about 100 ° C. By using such a high melting point EVA film B ″, even if the laminated glass E2 is applied under the sunshine outdoors, the laminated glass plate A ′ is not separated by the softening of the film.

The laminated glass raw material D2 obtained by alternately laminating the glass plate A 'and the high melting point EVA film B "is placed on the laminate mounting plate 54 via the upper and lower silicon rubber plates 33c and 54b as shown in FIG. The high-melting-point EVA film B ″ was melted by heat treatment by applying high frequency, and the upper and lower glass plates A ′ were bonded.

The conditions such as heating in the deaeration / adhesion step P2, the air supply step P3, the re-deaeration step P3 ', and the curing step P4 were set as follows, as shown in FIG. That is, in the deaeration / adhesion process P2, the inside of the closed space S is set to a reduced pressure environment (vacuum degree: 710 mmHg), and the upper electrode plate 3
The anode current value to be supplied to No. 2 was set to 5.0 A, and after this current supply was continued for 530 seconds, the current value was reduced to 4.0 A in a reduced pressure environment, and this state was continued for 60 seconds.

Next, in the air supply step P3, the inside of the closed space S is returned to the normal pressure environment, and this state is continued for 60 seconds.
The inside was set to a reduced pressure environment again. After this reduced pressure environment was continued until the temperature of the high melting point EVA film B ″ became sufficiently lower than the melting point, the sealed space S was returned to normal pressure, and a laminated glass E2 was obtained through a curing step P4 of about 300 seconds.

By processing the laminated glass raw material D2 under such conditions, as shown in FIG. 15, in the degassing / adhering step P2, the laminated glass raw material D2 is subjected to high-frequency heating at 5.0 A to obtain a high melting point EVA film. The temperature was raised to about 100 ° C., which is the melting point of B ″, and this temperature was maintained for 60 seconds by high-frequency heating at 4.0 A, during which high melting point EVA was used.
The upper and lower glass plates A 'sandwiching the film B "are bonded to each other.

At this time, when air enters between the high melting point EVA film B ″ and the glass plate A ′, bubbles are formed at the periphery of the laminated glass raw material D2, but in the next air supply step P3, the air is closed. The high-melting point EVA film B ″ is fluidized by the above mechanism (heated to 120 ° C.), and air bubbles are led out into the closed space S, and the air bubbles disappear once. However, when the temperature of the high melting point EVA film B "becomes too high, it is thermally decomposed to generate a decomposed gas, and bubbles resulting from the decomposed gas are formed in the peripheral portion of the laminated glass raw material D2.

In this state, the degassing step P3 'is executed, whereby the decomposed gas bubbles are sucked from the edge of the melted high melting point EVA film B "into the closed space S under the reduced pressure environment. The bubbles formed at the periphery of are then removed. After returning to the normal atmospheric pressure environment in the re-air supply step P3 ″, the laminated glass E2 having a five-layer structure is cooled to substantially normal temperature in the curing step P4. Obtained. As a result of visually observing the laminated glass E2 thus obtained,
It was confirmed that there were no bubbles at the periphery.

[0146] 2. Other Examples of Composite Laminates Produced by the Method of the Present Invention Various composite laminates were experimentally produced by the method of the present invention. Tables 2 and 3 show examples of the manufactured products. As the film adhesive, a modified EVA having a thickness of 5 μm was formed on the front and back of a polyethylene terephthalate film having a thickness of 36 μm.
Film-shaped ones laminated so as to have a thickness of 0 μm and others shown in Tables 2 and 3 were used. Further, as the laminated material, a plate-like material such as a plate glass, an artificial marble plate, a PC plate, and a sheet-like material such as woven fabric, Japanese paper, and leather were used. Then, a film-like adhesive was sandwiched between these laminated materials, heated by applying a high frequency under a pressurized state, and then gradually cooled to obtain a composite laminated body.

In these tables, the laminated structure is as follows:
It is indicated as "laminate + adhesive + laminate", and when these laminates are further laminated to form a composite laminate, it is represented as "xn". In addition, GL indicates a glass plate, PC indicates a plate or film made of polycarbonate, numerals without units in front of them indicate thickness dimensions in mm, and numerals with μ indicate The thickness dimension in μm is shown. As for the film-like adhesive, the material of the core film is PET, and its thickness is 36 μm. A is an ordinary adhesive made of a thermoplastic synthetic resin in which a core film is not used, and B, C and D are other types of ordinary adhesives, respectively.

[0148]

[Table 2]

[0149]

[Table 3]

In all the composite laminates shown in Table 1, it was confirmed that the laminated materials of the respective layers were securely bonded to each other and that the strength was remarkably improved as compared with the case where the glass plate was used alone. . Also, those without using a glass plate showed good adhesion.

[0151]

According to the first aspect of the present invention, the apparatus for manufacturing a composite laminate is applied to a laminate raw material obtained by interposing a film-like adhesive between each of a plurality of laminates. A composite laminate is manufactured by applying electromagnetic wave heating, and an electromagnetic wave heating unit for applying a high-frequency voltage to the laminate material in a state where the laminate material is sealed is provided in this manufacturing apparatus. Since high frequency is applied in the non-pressurized state (non-pressed state) in the part, the film adhesive melted by heating by applying high frequency voltage is in a state where no large pressure is applied in the molten state. Therefore, the fluidity of the molten adhesive is not impaired, so that the bubbles which are confined inside the adhesive and whose pressure is increased by the temperature rise by the high frequency heating move smoothly by the force generated at this time. It becomes so that it is possible to easily exit the bubbles in the adhesive outside.

According to the second aspect of the present invention, the electromagnetic wave heating section is sandwiched between the closed space forming means for forming the closed space, and the laminate raw material loaded in the closed space formed by the closed space forming means. And a pair of opposing electrodes for applying a high-frequency voltage thereto, so that the laminate raw material can be placed in a closed space by the closed space forming means while being sandwiched between the pair of opposing electrodes. it can.

According to the third aspect of the present invention, since the pressure adjusting means for adjusting the atmospheric pressure in the closed space is provided, the laminate material is sandwiched between a pair of voltages and a high frequency is applied.
By reducing the pressure in the closed space by the pressure adjusting means, bubbles existing in the molten adhesive are sucked into the closed space in a reduced pressure state, thereby removing bubbles generated between the laminated materials of the laminate material. Can be.

According to the fourth aspect of the present invention, as the pressure adjusting means, the first pressure adjusting means for reducing the pressure in the enclosed space when applying a high frequency to the laminate raw material, and the application of the high frequency is completed. Since the second pressure adjusting means for once returning the closed space to the normal pressure and then re-pressurizing the inside of the closed space is provided, the first raw material is subjected to the high-frequency heating in a state where the laminate material is subjected to the high-frequency heating.
By making the inside of the closed space a reduced pressure environment by the pressure adjusting means, it is possible to suck and remove air bubbles caused by air formed between the laminated materials, and to form a film by returning the reduced pressure environment to the normal pressure environment. After the air bubbles are completely removed by raising the temperature of the adhesive, even if decomposed gas bubbles are generated due to the thermal decomposition of the adhesive, these air bubbles are generated again by the second pressure adjusting means in a reduced pressure environment. Since the composite laminate is sucked into the closed space by being discharged, the composite laminate can be made free from both air bubbles and decomposition gas bubbles.

According to the fifth aspect of the present invention, the closed space forming means includes a mounting plate on which the stacked raw material is mounted, and a sealing plate for covering the stacked raw material mounted on the mounting plate from above. A sheet body, a frame body attached to an upper peripheral portion of the sealing sheet body, and a frame body elevating means for elevating the frame body, and the counter electrode is provided via the sealing sheet body and the mounting plate. Since the upper electrode plate and the lower electrode plate are in contact with the laminate raw material, and the electrode plate raising and lowering means for raising and lowering the upper electrode plate is provided, the frame body lifting means with the laminate raw material placed on the mounting plate is provided. By lowering the frame by driving the lower layer and bringing the lower surface thereof into contact with the mounting plate, the raw material for the laminated body is covered with the sheet for sealing, whereby the raw material for the laminated body is loaded into the closed space. be able to. In this state, by lowering the upper electrode by driving the electrode plate lifting / lowering means, the laminate material is sandwiched between the pair of counter electrodes via the sealing sheet and the mounting plate, and receives a high frequency application from the counter electrode. be able to.

As described above, the use of the sealing sheet makes it easy to insert / remove the laminate material between the opposing electrodes by the raising / lowering operation, and to provide the sealing material for loading the laminate material. A space can be easily formed.

According to the sixth aspect of the present invention, the pressure adjusting means includes a vacuum pump, a main suction pipe connecting the vacuum pump to the closed space, an outside air introduction pipe branched from the main suction pipe, and By operating the vacuum pump, the air in the sealed space is removed by suction through the main suction pipe, and the inside of the sealed space becomes a reduced pressure environment. By stopping the operation and opening the control valve, the outside air is introduced into the closed space through the control valve, the outside air introduction pipe and the suction main pipe, thereby returning the closed space to the original normal pressure environment. It is. As described above, by appropriately combining the operation and stoppage of the vacuum pump with the operation of opening and closing the control valve, the air pressure environment in the closed space can be easily adjusted.

According to the seventh aspect of the present invention, a laminate material and a film-like adhesive are laminated on a laminate mounting plate of a bogie in a laminating section to prepare a laminate raw material. By carrying the mounted cart to the electromagnetic wave heating unit and causing the first to third elevating means to perform predetermined lifting and lowering while the raw material of the laminate is still mounted on the carriage, the raw material of the laminate is surrounded by In the state where the sealed space is formed, the upper electrode plate and the lower electrode plate are in contact with each other via the sealing sheet body and the laminated body mounting plate between the upper electrode plate and the lower electrode plate. The cumbersome operation of transferring the prepared layered material to the conveying means, transferring the layered material to the electromagnetic wave heating unit by this conveying means, and loading the transferred layered material into the electromagnetic wave heating unit is also troublesome. No longer needed Do work the composite laminate can be sequentially easily manufactured without, it is possible to improve the manufacturing efficiency of the composite laminate, it is effective in reducing the manufacturing cost.

According to the eighth aspect of the present invention, the portal structure is provided in the electromagnetic wave heating section to support the first and second lifting means, and the carriage is supported in the portal structure. And the lower frame is driven by the third raising / lowering means and the lower frame and upper electrode plate are driven by the first and second lifting means, so that the raw material for the laminate is placed on the sealing sheet and the laminate. Since the upper and lower electrode plates are held between the upper and lower electrode plates via the mounting plate, electromagnetic waves which are complicatedly operated by driving the first to third lifting / lowering means especially in the presence of the gate-shaped structure and the lifting / lowering stand The structure of the heating section can be made simple and structurally stable. Further, since the circular frame is provided on the cart, the laminate raw material easily comes into contact with and separates from the lower electrode plate via the laminate mounting plate when the cart is moved up and down, which also contributes to simplification of the structure. be able to.

According to the ninth aspect, the first to the third
Since the cylinder device is employed as the elevating means, the structure of the electromagnetic wave heating unit is simplified, which is advantageous in reducing equipment costs.

According to the tenth aspect of the present invention, since the sealing sheet is made of silicon rubber, the silicon rubber is a material having excellent elasticity, elastic deformation, toughness and heat resistance. Is suitable as a sealing sheet body that frequently undergoes elastic deformation repeatedly in a heated state, can reduce the frequency of replacing the sealing sheet body, and is effective in reducing maintenance costs. .

[Brief description of the drawings]

FIG. 1 is a process chart showing an embodiment of a manufacturing process of a composite laminate to which a manufacturing apparatus of the present invention is applied.

FIG. 2 is a partially cutaway perspective view showing the entire configuration of an embodiment of the manufacturing apparatus according to the present invention.

FIG. 3 is a partially cutaway perspective view showing one embodiment of a main part of the high frequency welding machine, and shows a state immediately after a carriage on which a laminate material is mounted is introduced into the high frequency welding machine.

FIG. 4 is a partially cutaway perspective view showing an embodiment of a main part of the high-frequency welding machine, showing a state in which a closed space surrounding a laminate raw material is formed on a laminate mounting plate of a cart. I have.

FIG. 5 is a sectional view taken along line WW of FIG. 3;

FIG. 6 is a sectional view taken along line ZZ of FIG. 4;

FIG. 7 is a block diagram showing one embodiment of a high-frequency oscillator applied to the manufacturing apparatus of the present invention.

FIG. 8 is a cross-sectional view showing one example of a film adhesive used in the present invention.

9 is a cross-sectional view showing one embodiment of a composite laminate in which the film adhesive B shown in FIG. 8 is employed.

FIG. 10 is a process chart showing a second embodiment of the manufacturing process of the composite laminate to which the present invention is applied.

FIG. 11 is an enlarged cross-sectional view illustrating a state of the closed space in the first embodiment.

FIG. 12 is an explanatory plan view showing a state in which a laminated glass raw material is mounted between upper and lower electrode plates.

FIG. 13 is a graph showing a time-dependent temperature change in a closed space during high-frequency heating in Example 1 and Comparative Example 1.

FIG. 14 is an enlarged cross-sectional view illustrating a state of a closed space in the second embodiment.

FIG. 15 is a graph showing a temporal change in temperature of a closed space during high-frequency heating in Example 2.

[Explanation of symbols]

 Reference Signs List A laminate material B film adhesive C laminate raw material D composite laminate P1 lamination process P2 deaeration / adhesion process P3 air supply process P3 'regasification process P3 "regasification process P4 curing process 1 manufacturing device 2 laminating section Reference Signs List 20 base 21 support 22 table plate 23 rail 3 electromagnetic wave heating unit 31 high-frequency welding machine 31a portal structure 31b beam 31c support 310c guide groove 31d ceiling plate 31e intermediate connection member 32 upper electrode plate 32a connection rod 32b intermediate plate 321 first Cylinder device 322 Cylinder 323 Piston rod 33 Laminated body surrounding member 33a Square annular frame 33b Flange portion 33c Silicon rubber plate 33d Intake pipe 331 Second cylinder device 332 Cylinder 333 Piston rod 34 Elevating stand 34a Guide protrusion 35 Rail 36 Lower electrode plate 37 High frequency oscillation 371 Control circuit 372 Operation section 373 High frequency generation section 374 Power supply circuit 375 High frequency generation circuit 376 Matching circuit 38 Pressure adjusting means 38a Vacuum pump 38b Control valve 38c Suction main pipe 38d Outside air introduction pipe 4 Storage section 40 Mount 41 Support column 42 Table plate 43 Rail 5 Dolly 51 Square frame 51a Penetrating space 52 Wheel axle 53 Wheel 54 Laminated body mounting plate 55 Locking means 55a Bracket 55b Actuator 55c Operation rod 55d Locking claw S Sealed space

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masataka Shiro 4-14 North, Hongo-dori, Shiroishi-ku, Sapporo City Within Nippon Denden Co., Ltd. No. Yamamoto Vinita Co., Ltd. (72) Inventor Tsuneo Nagata 6-3-12 Kamishio, Tennoji-ku, Osaka City Inside Yamamoto Vinita Co., Ltd. (72) Yasuo Hashimoto 6-3-12, Kamio, Tennoji-ku, Osaka Yamamoto Vinita Shares In company

Claims (10)

[Claims] 1. A laminate material obtained by interposing a film adhesive between each of a plurality of laminates and subjecting the laminate raw material to electromagnetic wave heating to cause the laminates to be mutually melted by heating and melting the film adhesive. An apparatus for manufacturing a composite laminate for producing a composite laminate by bonding, comprising an electromagnetic wave heating unit for applying a high frequency to the laminate raw material in a non-pressurized state with the laminate raw material in an enclosed space. For manufacturing composite laminates. 2. The electromagnetic wave heating section includes a closed space forming means for forming the closed space, and a laminate raw material loaded in the closed space formed by the closed space forming means, and applies a high frequency voltage thereto. The apparatus for producing a composite laminate according to claim 1, further comprising a pair of opposing electrodes to be applied. 3. The apparatus for manufacturing a composite laminate according to claim 1, further comprising pressure adjusting means for adjusting the atmospheric pressure in the closed space. 4. The pressure adjusting means comprises: first pressure adjusting means for setting the inside of the closed space to a reduced pressure environment when applying a high frequency to the laminate raw material;
4. The apparatus for producing a composite laminate according to claim 3, further comprising a second pressure adjusting means for returning the inside of the closed space to a reduced pressure environment after returning the closed space to normal pressure. 5. The closed space forming means includes: a mounting plate on which the laminate raw material is mounted; a sealing sheet body for covering the stacked raw material mounted on the mounting plate from above; A frame attached to the peripheral edge of the upper surface of the sheet body, and frame elevating means for elevating and lowering the frame. The counter electrode is used as a raw material for a laminate via the sealing sheet and the mounting plate. The apparatus for manufacturing a composite laminate according to any one of claims 2 to 4, comprising an upper electrode plate and a lower electrode plate that are in contact with each other, and an electrode plate lifting / lowering means for lifting and lowering the upper electrode plate. . 6. The pressure adjusting means comprises: a vacuum pump; a main suction pipe connecting the vacuum pump to the closed space;
The composite laminate according to any one of claims 3 to 5, further comprising: an outside air introduction pipe branched from the suction main pipe; and a control valve provided in the outside air introduction pipe. Manufacturing equipment. 7. A composite laminate production apparatus for producing a composite laminate by interposing a film adhesive between each of the plurality of laminates, and laminating the laminates via the film adhesive. A laminating section for forming a laminate raw material, an electromagnetic wave heating section for applying electromagnetic wave heating to the laminate raw material obtained in the laminating section to heat and melt the film adhesive, and a laminate mounting plate for the laminate raw material A carriage for carrying the electromagnetic wave heating unit from the stacking unit in a state where the stacking unit is placed on the stacking unit, wherein the electromagnetic wave heating unit is configured to apply a high-frequency voltage to the stacked raw material on the carried stack mounting plate; A plate and a lower electrode plate;
A sealing sheet interposed between the upper electrode plate and the lower electrode plate, a frame supporting a peripheral portion of the sealing sheet, a first elevating means for raising and lowering the upper electrode plate, and the frame A second elevating means for elevating and lowering the body, and a third elevating means for elevating the carriage or the lower electrode plate, wherein the first to third elevating members are arranged in a state where the carriage is located between the upper and lower electrode plates. By driving the means, the laminate raw material placed on the laminate placement plate comes into contact with the upper electrode plate and the lower electrode plate via the sealing sheet and the laminate placement plate, and An apparatus for producing a composite laminate, characterized in that a closed space is formed around the laminate raw material by the sheet material for use, and a pressure reducing means for reducing the pressure in the closed space is provided. 8. The trolley has an annular frame having a through space in the center, and the stacked body mounting plate is provided on the upper portion of the annular frame so as to cover the through space. In the state where the carriage is mounted, the third
An elevating platform which is raised and lowered by driving the elevating means, and a gate-shaped structure which straddles the elevating platform and which the carriage enters and exits are provided. The first and second elevating means are mounted on the portal-shaped structure Then, the lower electrode plate is fitted into the through space by lowering the lift gantry by driving the third lifting means in a state where the trolley is located in the gate-shaped structure. Abuts on the upper surface of the lower electrode plate, and lowers the upper electrode plate and the laminate surrounding member by driving the first lifting / lowering means and the second lifting / lowering means. The apparatus for manufacturing a composite laminate according to claim 7, wherein the apparatus is configured to be brought into close contact with the composite laminate. 9. An apparatus according to claim 7, wherein said first to third lifting means are formed by a cylinder device. 10. The apparatus according to claim 4, wherein the sealing sheet is made of silicon rubber.