KR101988891B1 - Curved lamination glass and manufacturing method thereof - Google Patents

Abstract

The present invention relates to curved surface bonding glass and a bonding method thereof which is able to efficiently produce safe bonded glass by applying a bonding film to curved glass having various shapes. The bonding method comprises: a step (a) of preparing first curved glass and second curved glass corresponding to the first curved glass; a step (b) of mounting a bonding film on the first curved glass and laminating the second curved glass on the bonding film; a step (c) of sealing the peripheral part of the first curved glass and the second curved glass laminated in the step (b) with first vinyl and second vinyl; a step (d) of bonding in a vacuum in a chamber or pressing and bonding in a vacuum in an autoclave so that the bonding film is bonded to the first curved glass and the second curved glass; and a step (e) of packing the curved surface bonding glass drawn out of the step (d). The present invention is able to bond a bonding film onto curved glass having various shapes stably and reliably between the first curved glass and the second curved glass by the step (d) carried out while maintaining the inside of the vinyl sealed in the step (c) in a vacuum.

Description

Curved laminated glass and its bonding method {CURVED LAMINATION GLASS AND MANUFACTURING METHOD THEREOF}

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to curved laminated glass and a bonding method thereof, and more particularly, to a curved laminated glass and a bonding method capable of efficiently producing a safe laminated glass by applying a bonding film to curved glass having various shapes.

In general, curved glass is generally used as a method of imparting curvature to the glass. Self-weighting is a method of molding by using a molding frame to fix the edge of the glass, by raising the temperature to the vicinity of the softening point of the glass to be molded and by bending the glass by the self-weight of the glass. It is a method of pressing and shaping the glass to be molded into a mold formed in a predetermined shape while sufficiently heated.

Such curved glass is made of polyvinyl butyral (PVB) resin film, which is an organic adhesive film, between two sheets of glass to be applied to tempered glass for building and automotive use. Using an autoclave, which is a device for heating by means of heating, it is manufactured by heating and bonding at 120 to 130 ° C. under a pressure of about 10 to 15 kgf / cm 2.

For example, as shown in FIG. 1, the tempered glass is mounted between the first tempered glass 10a and the second tempered glass 10b to produce a tempered glass by pressing the PVB film 20 to form a tempered glass. It will be used as safety glass. Since the PVB used as the intermediate resin film is a kind of reinforcing material, when the first tempered glass 10a or the second tempered glass 10b is broken, the glass fragments are not scattered by the PVB and proceed to radial cracking. Due to this characteristic, the size of the fragments is small at the point of crack generation, but the size of the fragments farther from this point becomes larger and energy absorption occurs.

On the other hand, the curved tempered glass joining operation is more difficult than the planar glass joining operation, and thus the failure rate is also high. This is because in the case of planar glass lamination, it is easy to create a vacuum between the planar glasses to be laminated, and there is little bubble generation in the lamination process, whereas in the case of curved glass lamination, there may be a lot of bubble generation between the curved glass to be bonded due to the curved characteristics. to be.

An example of a technique for solving such a problem is disclosed in the following Documents 1 to 3 and the like.

For example, Patent Document 1 below provides a step of preparing a plate-shaped support glass and a plate-shaped first glass, laminating the plate-shaped first glass on an upper surface of the plate-shaped support glass, and the laminated plate-shaped support glass. And heating the plate-shaped first glass to curve the plate-shaped support glass and the plate-shaped first glass by its own weight, and the support glass or plate-shaped curved surface on one surface of the curved first glass. Bonding a second glass, wherein the support glass has a higher softening point and slower cooling point than the first glass, and uses a bonding film or an adhesive to bond the support glass or the second glass to the first glass. The manufacturing method of laminated glass is disclosed.

In addition, Patent Document 2 has a lamination step of laminating the first curved tempered glass and the second curved tempered glass so that a bonding film therebetween, the edge of the laminate of the first and second curved tempered glass after the laminating step The edge sealing step of sealing with a ring-shaped sealant, the vacuum test step of checking the vacuum state of the laminate by connecting the jack of the vacuum test apparatus to the sealant, and heating the bonding film in the laminate in an oven to strengthen the first curved surface. Disclosed is a curved tempered glass bonding method comprising a heat bonding step of bonding glass and the second curved tempered glass.

Meanwhile, Patent Document 3 discloses a lamination step of laminating a first curved tempered glass and a second curved tempered glass such that a bonding film is interposed therebetween, and a laminate of the first and second curved tempered glass that have passed through the lamination step. Packaging sealing step of packaging sealing using a vinyl film, a vacuum test step of checking the vacuum state of the laminate by connecting the jack of the vacuum test apparatus to the connection portion of the vinyl film and the bonding film in the laminate in the oven And heating and bonding the first curved tempered glass and the second curved tempered glass, wherein the packing sealing step wraps the entire laminate with a nonwoven fabric and then wraps the vinyl film with the vacuum test step. Is on a workbench on which the laminating step is performed, on a loading cart for transferring the stack to the oven, and in the oven. Enhanced surface is carried out up is disclosed for glass bonding method.

Republic of Korea Patent Publication No. 2018-0080473 (published Jul. 12, 2018) Republic of Korea Patent Publication No. 10-1345107 (December 19, 2013 registration) Republic of Korea Patent Registration No. 10-1430074 (2014.08.07 registration)

In the technique disclosed in Patent Document 1 as described above, after the first glass is curved in order to prevent the bonding film or the adhesive from being deformed and the adhesive strength is reduced, the second glass is formed at 80 ° C. or more and 140 ° C. or less. Since the bonding is performed to the high temperature and high pressure in the autoclave to complete the bonding of the second glass and the first glass, the treatment process by the two-stage heat treatment process is complicated, and the vacuum holding state of the bonding film is It is not disclosed.

In addition, in the technique disclosed in Patent Document 2, since the edges of the laminates of the first and second curved tempered glass are sealed with a ring-shaped sealant, it is difficult to keep the interior of the laminate in a completely sealed state, thereby preventing bubbles from being generated. There was a problem that running the vacuum test in multiple stages reduced the efficiency of the work.

In addition, although the technique disclosed in the patent document 3 discloses a technique of wrapping the laminate of the first and second curved tempered glass with a nonwoven fabric and then packaging sealing using a vinyl film, the interior of the laminate as in Patent Document 2 is disclosed. There was a problem that it was difficult to keep it completely enclosed, and accordingly, a multi-stage vacuum test was performed, which lowered the efficiency of the work. That is, in the technique disclosed in Patent Literature 3, since the entirety of the first and second curved tempered glass is covered with a nonwoven fabric and the work is performed, there is a problem that the favorable efficiency is lowered.

Moreover, in the technique disclosed in the said patent documents 2 and 3, since heat bonding is performed by raising to 135 degreeC in an autoclave, there also existed a problem that the damage of a film, and the time of heating and cooling became long.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems described above, and to provide a curved laminated glass and a method of joining the laminated glass to be easily and simply bonded to flat glass or curved glass of various shapes.

It is another object of the present invention to provide a curved laminated glass and a method of joining thereof, which can easily perform a sealing finish of vinyl and simplify the manufacturing process of curved laminated glass by applying a threaded suction tube.

Still another object of the present invention is to provide a curved laminated glass and a method of joining the same, which can reliably produce curved laminated glass of various shapes.

In order to achieve the above object, the bonding method of the curved laminated glass according to the present invention comprises the steps of (a) providing a first curved glass and a second curved glass corresponding to the first curved glass, (b) the first curved glass Mounting a laminated film on the laminated film and laminating the second curved glass on the laminated film, (c) surrounding the first curved glass and the second curved glass laminated in the step (b) with the first vinyl Sealing with a second vinyl, (d) pressurizing vacuum bonding in a vacuum bonding or autoclave in a chamber such that the bonding film is bonded to the first curved glass and the second curved glass, (e) the step wrapping the curved laminated glass drawn out in (d), wherein step (d) is performed while maintaining the inside of the sealed vinyl in step (c) in a vacuum state.

In addition, in the method for bonding curved laminated glass according to the present invention, the step (c) may include (c1) the first vinyl and the second vinyl 50 to 100 mm larger than the peripheral portions of the first curved glass and the second curved glass, respectively. Preparing and laminating the first vinyl on the lower portion of the first curved glass and laminating the second vinyl on the upper portion of the second curved glass, (c2) on one of the first vinyl and the second vinyl. Providing a suction port, (c3) wrapping only a portion of the first curved glass and the second curved glass corresponding to the suction port with a nonwoven fabric having a size of 300 mm x 300 mm, and (c4) a suction part formed in the hollow of the suction port. And attaching a threaded first suction pipe having a threaded guide member, a pair of nuts coupled to the thread, and a high temperature silicon ring provided between the pair of nuts, (c5) the first vinyl and the 2 Suture the perimeter of the vinyl portable Sealing with a pharynx and (c6) inserting a vacuum hose into the threaded first suction tube.

In addition, in the method for bonding curved laminated glass according to the present invention, the step (d) includes (d1) connecting the vacuum hose provided in the step (c6) to a second suction pipe provided in the chamber or the autoclave, (d2 Operating a vacuum pump connected to the second suction pipe to maintain the interior sealed with the first vinyl and the second vinyl in a vacuum state, (d3) maintaining the state of the step (d2) or the chamber or autoclave Raising the internal temperature of the 70 to 90 ℃ 15 to 25 minutes, and then continue to 110 to 130 ℃ 25 to 30 minutes to maintain, (d4) after the completion of the step (d3), the chamber or autoclave And cooling the inner temperature of the film to 40 to 45 ° C. and then drawing the curved laminated glass bonded to the first curved glass and the second curved glass by the laminated film from the chamber or the autoclave. .

In addition, in the method for bonding curved laminated glass according to the present invention, the internal pressure of the autoclave in the step (d3) is characterized in that it is maintained at a state of 110 ~ 130 Mp.

Moreover, in order to achieve the said objective, the curved laminated glass which concerns on this invention was manufactured by the bonding method of the curved laminated glass mentioned above.

As described above, according to the curved laminated glass according to the present invention and the bonding method thereof, a vacuum pump is operated in a vacuum bonding or autoclave in a chamber to operate a vacuum pump while maintaining the inside of the sealed vinyl in a vacuum state. Therefore, the effect that a bonding film can be stably and reliably bonded between a 1st curved glass and a 2nd curved glass to curved glass of various shapes is acquired.

In addition, according to the curved laminated glass and the bonding method according to the present invention, the peripheral portions of the first curved glass and the second curved glass are sealed with the first vinyl and the second vinyl, and the first vinyl and the first Since the inside sealed with 2 vinyl is kept in a vacuum state, the effect that the manufacturing process of curved laminated glass can be simplified is also acquired.

In addition, according to the curved laminated glass and the bonding method according to the present invention, since the peripheral portions of the first curved glass and the second curved glass are sealed with the first vinyl and the second vinyl, the curved laminated glass is irrespective of the shape or type of the curved laminated glass. The effect that a laminated glass can be produced is also acquired.

1 is a cross-sectional view of the tempered glass using a typical PVB film,
2 is a process chart for explaining a bonding process of the curved laminated glass according to the present invention;
3 is a process chart for explaining the first and second curved glass sealing step in FIG.
4 is a photograph showing a sealed state of the first and second curved glass seals in FIG.
FIG. 5 is a photograph illustrating a state in which only portions of the first curved glass and the second curved glass corresponding to the suction port of FIG. 3 are wrapped with a nonwoven fabric;
6 is a photograph showing a state in which the first suction pipe is attached to the suction port in FIG.
Figure 7 is a photograph showing the structure of the first suction pipe used in Figure 6,
8 is a process chart for explaining a vacuum bonding or pressure vacuum bonding step in FIG.
9 is a photograph showing a state of a second suction pipe provided in a chamber or an autoclave in FIG. 8;
10 is a photograph showing a vacuum pump connected to the second suction pipe in FIG. 8.

The above and other objects and novel features of the present invention will become more apparent from the description of the specification and the accompanying drawings.

As used herein, the term "bonded glass" refers to safety glass bonded with a synthetic resin adhesive by inserting a synthetic film between two sheets of transparent plate glass so that the fragments do not scatter even when the glass is broken. It is used to warp glass, and is used for glass having curved surfaces such as windows and traffic lights such as architecture, automobiles, trams, and airplanes.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.

2 is a process chart for explaining a bonding process of the curved laminated glass according to the present invention.

As shown in FIG. 2, the curved laminated glass according to the present invention first provides a first curved glass and a second curved glass corresponding to the first curved glass (S10).

The first curved glass and the second curved glass applied to the present invention are glass composed of one or more curved surfaces used for automobiles or two or more curved surfaces used for construction. For example, the curved glass is formed by heating the plate glass. Can be maintained. Alternatively, two pieces of glass may be laminated, placed in a mold, and heated to near the softening point of the glass, and then processed into a curved surface through the weight of the glass. In addition, as disclosed in the Patent Document 1, when the physical properties of the two sheets of glass used for laminated glass are similar, the batch phenomenon that the surface is processed to be more than the desired curvature in the center portion of the glass in the process of heating the glass surface In order to solve the problem that the surface is not curved with the same curvature, the center of the first flat glass is laminated by heating the first flat glass on the upper surface of the supporting glass having a softening point and a slow cooling point higher than the first flat glass. You can also avoid fullness at the part.

On the other hand, when the 1st curved glass and the 2nd curved glass applied to this invention are applied, for example for building use, each thickness and curvature radius are not specified. Moreover, such a 1st curved glass and a 2nd curved glass can be wash | cleaned and used, for example with toluene wash water for bonding with a bonding film.

Next, a bonding film is mounted on the first curved glass, and a second curved glass is laminated on the bonding film (S20). That is, as shown in FIG. 1, the first curved glass, the laminated film, and the second curved glass are sequentially stacked.

As the bonding film, polyvinyl butyral (PVB), which is an environmentally friendly transparent resin made by reacting polyvinyl alcohol with butylaldehyde under an acid catalyst, is not limited thereto. For example, polyvinyl alcohol (PVA) and Copolymer film of polyvinyl butyral (PVB), polyethylene (PE), ethylene vinyl acetate copolymer (EVA), polypropylene (PP), polystyrene (PS), methacryl resin (PMA), polyvinyl chloride (PVC) , Polyethylene terephthalate (PET), polybutylene terephthalate (PBT), cellulose acetate (CA), diallyl phthalate resin (DAP), urea resin (UP), melamine resin (MF), unsaturated polyester (UP), Polyvinyl formal (PVF), polyvinyl alcohol (PVAL), vinyl acetate resin (PVAc), ionomer (IO), polymethylpentene (TPX), vinylidene chloride (PVDC), polysulfone (PSF), polyvinyl fluoride Liden (PVDF), methacryl-styrene copolymer Resin (MS), polyarylate (PAR), polyallyl sulfone (PASF), polybutadiene (BR), polyether sulfone (PESF), polyether ether ketone (PEEK) and the like can be used. In addition, although the above description demonstrated using one bonding film, it is not limited to this, It can use two or more types of films of the same kind as a bonding film, or can use two or more types of films.

In addition, the first curved glass, the laminated film, and the second curved glass may be provided to have the same area, or the laminated film may be provided to protrude from respective peripheral portions of the first curved glass and the second curved glass.

Next, the peripheral portions of the first curved glass and the second curved glass laminated in the step S20 are sealed with the first vinyl and the second vinyl (S30).

The step S30 will be described with reference to FIGS. 3 to 7.

3 is a process chart for explaining the first and second curved glass sealing step in Figure 2, Figure 4 is a photograph showing the sealing state of the first and second curved glass sealing in Figure 2, Figure 5 is in Figure 3 FIG. 6 is a photograph illustrating a state in which only portions of the first curved glass and the second curved glass corresponding to the inlet are wrapped with a nonwoven fabric. FIG. 6 is a photograph illustrating a state in which the first suction tube is attached to the inlet of FIG. 3, and FIG. Photo showing the structure of the first suction pipe used in the

As shown in FIG. 3, in order to seal the circumferential portions of the first curved glass and the second curved glass with the first vinyl and the second vinyl, firstly, the first vinyl and the second vinyl are cut to each other to form the first curved glass. And 50-100 mm larger than the peripheral portion of the second curved glass. That is, the first vinyl and the second vinyl are provided to sufficiently surround the circumferential portions of the first curved glass and the second curved glass, respectively, as shown in FIG. 4, and the first vinyl is laminated on the lower portion of the first curved glass. The second vinyl is laminated on the second curved glass (S31). Such a first vinyl and a second vinyl have a heat resistance of 130 to 150 ° C. and a thickness of 0.08 ± 0.02 mm to maintain the vacuum state therein and to be maintained at a high temperature described later.

Subsequently, a suction port is provided in any one of the first vinyl and the second vinyl (S32). This suction port is formed about 6 mm in diameter.

Subsequently, a portion of the first curved glass and the second curved glass corresponding to the suction port is wrapped with a nonwoven fabric as shown in FIG. 5 (S33). That is, in order to prevent the bonding film mounted between the first curved glass and the second curved glass from being exposed to the inside of the first vinyl and the second vinyl, the first curved glass and the second curved glass to block the suction port. The upper and lower portions of the curved glass are wrapped with a nonwoven fabric through which air can pass.

That is, the nonwoven fabric is provided only in the part corresponding to the above-mentioned suction port, for example, is provided in the size of 300 mm x 300 mm in width, and is provided in the upper and lower parts of the 1st curved glass and the 2nd curved glass. Thus, the efficiency is improved as compared with the conventional technique of working by wrapping the entire first and second curved tempered glass with a nonwoven fabric.

Next, as shown in FIG. 6, the first suction pipe is attached to the suction port formed in the first vinyl or the second vinyl (S34).

As shown in FIG. 7, the screw-shaped first suction pipe includes a suction part 10 formed in a hollow, a guide member in communication with the hollow of the suction part 10 and having a thread 20 formed therein, and a thread of the guide member. A pair of nuts 30 and 50 coupled to each other, and a pair of high temperature silicon rings 40 provided for compression between the pair of nuts. The outer diameter of the screw thread is provided to be substantially equal to the diameter of 6 mm of the suction port described above.

Step S34 in the method of bonding the curved laminated glass according to the present invention attaches a screw-type first suction pipe by tightening a pair of nuts up and down with the first vinyl or the second vinyl interposed therebetween. That is, the threaded portion is inserted into the suction part 10 in a state in which one nut 30 and one high temperature silicon ring 40 are screwed to the portion where the thread 20 is formed in the guide member, After screwing the other high temperature silicone ring 40 and the nut 50 inside (the first curved glass and the second curved glass side), the pair of nuts 30 and 50 are tightened in different directions so that the vinyl And a portion of the high temperature silicon ring 40 to be in close contact. In addition, in order to prevent the air from leaking near the first suction pipe during the vacuum evacuation, the surroundings of the pair of nuts 30 and 50 are sealed with a dedicated sealing adhesive. By using the threaded suction pipe as described above, it is possible to increase the efficiency of the operation compared to the technique of bonding using a conventional jack.

Subsequently, the entire peripheral portion of the first vinyl and the second vinyl is sealed with a portable sealing iron (S35). The portable suture iron is a soldering iron used for sealing the first and second vinyl on the outside of the first vinyl and the second vinyl, and a conventional iron may be used. In the present invention, since a portable sealing iron is used, the sealing operation can be easily performed regardless of the place and environment. Moreover, although the curved glass was demonstrated in the said description, it is not limited to this, It is applicable also to the flat glass which seals a 1st vinyl and a 2nd vinyl by a portable iron.

Subsequently, a vacuum hose is inserted into the threaded first suction pipe provided in step S34 (S36). This vacuum hose is coupled to the outer circumference of the suction unit 10 described above.

The structure of the first curved glass and the second curved glass in which the first and second vinyls are sealed by the step S36 and a vacuum hose is inserted into the first suction pipe is applied to the first curved glass and the second curved glass. It is stacked on a moving trolley and guided into the chamber or autoclave to effect pressurized vacuum bonding in the chamber or in an autoclave for bonding.

That is, pressure bonding is performed by vacuum bonding or autoclave in a chamber so that the said bonding film may bond to the said 1st curved glass and the said 2nd curved glass (S40).

Step S40 will be described with reference to FIGS. 8 to 10.

FIG. 8 is a process chart for explaining a vacuum bonding or pressure vacuum bonding step in FIG. 2, FIG. 9 is a photograph showing a state of a second suction tube provided in a chamber or an autoclave in FIG. 8, and FIG. 10 is a second view in FIG. 8. The picture shows the vacuum pump connected to the suction pipe.

That is, in the state in which the vacuum hose is coupled to the outer circumference of the suction unit 10 in step S36, the vacuum hose is connected to the second suction tube provided in the chamber or autoclave as shown in FIG. 9 (S41). In the present invention, unlike the prior art described above, the first and second curved glass are transferred to the chamber or the autoclave in a sealed state, and a vacuum hose is connected to the second suction tube provided in the chamber or the autoclave. The second suction pipe is connected to a vacuum pump provided outside the chamber or the autoclave as shown in FIG. 10, and by operating the vacuum pump, the inside sealed with the first vinyl and the second vinyl is brought into a vacuum state. It is maintained (S42). This vacuum is maintained throughout the constant temperature of the chamber or autoclave.

While maintaining the state of the step S42 to apply a high temperature to the interior of the chamber or autoclave, that is to raise the internal temperature of the chamber or autoclave to 70 ~ 90 ℃ 15 to 25 minutes, preferably held at 80 ℃ 20 minutes Then, it is raised to 110-130 degreeC for 25 to 30 minutes, Preferably it is raised to 120 degreeC and hold | maintained for 30 minutes (S43).

Subsequently, after the end of step S43, the internal temperature of the chamber or autoclave is cooled to 40-45 ° C., preferably 43 ° C., and the vacuum hose is separated from the second suction pipe, and the bonding film is The curved laminated glass bonded to the first curved glass and the second curved glass is withdrawn from the chamber or autoclave (S44).

On the other hand, when performing the steps S41 to S44 in the autoclave, the internal pressure of the autoclave is first applied heat in the step S43, and then the pressure is in the state of 100 ~ 130 Mp, preferably 120 Mp Keep it running.

As described above, in the bonding method of the curved laminated glass according to the present invention, unlike the prior art, the method is maintained for a constant temperature using a vacuum pump provided in the apparatus of the chamber or the autoclave, and thus, between the first curved glass and the second curved glass. The bonding film can be stably bonded at.

The curved laminated glass drawn out in step S44 is packaged after removing the first vinyl, the second vinyl, and the nonwoven fabric (S50).

As described above, after the vinyl is removed, the threaded first suction pipe, the vacuum hose, and the like may be separated from the vinyl and reused.

As mentioned above, although the invention made by the present inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the summary.

By using the curved laminated glass and the bonding method according to the present invention, the laminated film can be stably and reliably bonded to the curved glass of various shapes between the first curved glass and the second curved glass.

Claims (5)

(a) providing a first curved glass and a second curved glass corresponding to the first curved glass,
(b) mounting a laminated film on the first curved glass and laminating a second curved glass on the laminated film,
(c) sealing peripheral portions of the first curved glass and the second curved glass laminated in the step (b) with the first vinyl and the second vinyl,
(d) pressurizing vacuum bonding in a vacuum bonding or autoclave in a chamber such that the bonding film is bonded to the first curved glass and the second curved glass,
(e) wrapping the curved laminated glass drawn out in step (d);
The step (d) is carried out while maintaining the interior of the sealed vinyl in step (c) in a vacuum state,
Step (c) is
(c1) providing the first vinyl and the second vinyl 50 to 100 mm larger than the peripheral portions of the first curved glass and the second curved glass, respectively, laminating the first vinyl on the lower portion of the first curved glass, and Laminating a second vinyl on top of the second curved glass,
(c2) providing a suction port in one of the first vinyl and the second vinyl,
(c3) wrapping only a portion of the first curved glass and the second curved glass corresponding to the suction port with a nonwoven fabric having a size of 300 mm x 300 mm,
(c4) attaching a first suction pipe having a suction part formed in a hollow to the suction port, a threaded guide member, a pair of nuts coupled to the thread, and a high temperature silicone ring provided between the pair of nuts; step,
(c5) sealing the peripheral portions of the first vinyl and the second vinyl with a portable suture iron; and
and (c6) inserting a vacuum hose into the threaded first suction pipe. delete In claim 1,
Step (d) is
(d1) connecting the vacuum hose provided in the step (c6) to a second suction pipe provided in the chamber or the autoclave,
(d2) operating the vacuum pump connected to the second suction pipe to maintain the interior sealed with the first vinyl and the second vinyl in a vacuum state;
(d3) while maintaining the state of the step (d2) to raise the internal temperature of the chamber or autoclave to 70 ~ 90 ℃ 15 to 25 minutes, and then continue to raise to 110 ~ 130 ℃ 25 to 30 minutes ,
(d4) After completion of the step (d3), the internal temperature of the chamber or autoclave is cooled to 40 ~ 45 ℃ and then the laminated film is laminated laminated glass bonded to the first curved glass and the second curved glass Method for bonding the curved laminated glass comprising the step of drawing out from the chamber or autoclave. In claim 3,
The internal pressure of the autoclave in the step (d3) is maintained in the state of 110 ~ 130 Mp bonding method of the curved laminated glass. It was manufactured by the bonding method of the curved laminated glass of any one of Claims 1 and 3, The curved laminated glass characterized by the above-mentioned.

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