JP2000086307A - Formation of spacer of multi-layered glass for heat insulation and device therefor and multi-layered glass for heat insulation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for forming the spacers for multi-layered glass for heat insulation, capable of easily forming the spacers whose glass plate-supporting surfaces are smooth and which have a uniform height, to provide a device therefor, and to provide the easily handleable multi-layered glass for heat insulation at a low cost. SOLUTION: This method for forming the spacers for multi-layered glass for heat insulation comprises making a printing intaglio 1 having depressions 2 corresponding to the shape and arrangement of the spacers 10, filling the depressions 2 of the printing intaglio with a pasty spacer material 4, tightly bringing the printing intaglio into contact with the spacer-forming surface of the glass plate 5, hardening the filled spacer material 4, and subsequently separating the printing intaglio 1 from the glass plate 5 to transfer the hardened spacer material 4 to the glass plate 5. Thereby, the application of the intaglio printing technology enables the relatively easy printing formation of the fine spacers 10 on the glass plate 5. The top portions of the spacers 10 formed on the glass plate 5 are not round, and the spacer material 4 does not have a sharp thread-like shape. The formed spacers have a uniform height and smooth surfaces for supporting the glass plate 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating multilayer glass in which a heat insulating layer is formed by disposing a spacer between a plurality of glass plates, a method of forming the heat insulating multilayer glass spacer, and the heat insulating multilayer. The present invention relates to a glass spacer forming apparatus.

[0002]

2. Description of the Related Art The above-mentioned multilayer glass for heat insulation is widely used for window glass of buildings as means for preventing heat loss from the glass surface. This kind of multilayer glass for heat insulation is disclosed in, for example, JP-A-5-501896 and JP-A-10-2.
As described in Japanese Patent Application Laid-Open No. 161 and Japanese Patent Application Laid-Open No. H10-25972, the periphery of a plurality of (usually two) glass plates disposed to face each other with a predetermined gap is sealed with a sealing material, and each glass is sealed. The air between the plates is evacuated to make the gap between the glass plates vacuum, or dry air or dry nitrogen (N ₂ ) gas is filled between the glass plates to form a heat insulating layer between the glass plates. The heat insulating layer eliminates or reduces the convection of air between the glass plates, thereby preventing the transfer of heat between the glass plates.

[0003] In this type of multi-layered glass for heat insulation, there are various gaps between each glass plate from several millimeters to several tens of millimeters. By reducing the gap, air between the respective glass plates is reduced. Therefore, it is considered that the gap between the glass plates is preferably as small as possible.

[0004]

However, such a conventional heat insulating multilayer glass is disclosed in, for example, Japanese Patent Application Laid-Open No. 10-140.
As described in Japanese Unexamined Patent Publication No. 937-937, when the insulating multilayer glass is used as a glass window of a building, the shape of the window frame becomes considerably complicated as compared with a general single-pane window frame. In addition, there is a problem that the cost is increased because a plurality of glass plates are used.

[0005] In particular, in a multi-layer glass for heat insulation in which the heat insulating layer between the respective glass plates is in a vacuum state, the heat insulating layer is in a negative pressure state.
As shown in the figure, the central part of each glass sheet is depressed inward due to the atmospheric pressure, and a compressive stress acts on the glass sheet in an outer part of the glass sheet, and the inside of the glass sheet is A tensile stress acts on the glass plate at the portion. Also,
Glass plates are generally resistant to compression and vulnerable to tension. Therefore, in this multilayer glass for heat insulation, although it depends on the size (area), it is necessary to use a thick glass plate (usually 3.0 mm or more) reinforced than a normal glass plate, so that it is considerably expensive. And the handling is difficult.

As a method of solving such a problem, it is conceivable to dispose a spacer between the glass plates to prevent the glass plates from warping. However, simply arranging a spacer between the glass plates may significantly impair the appearance and light transmittance of the glass plate due to the presence of the spacers, making it impossible to withstand practical use.

For this reason, when the spacer is arranged on this kind of multilayer glass for heat insulation, it is desirable to form the spacer extremely finely so as not to be conspicuous. However, it is not easy to form such a fine spacer on a glass plate. Depending on the method of forming the spacer, the cost of the glass plate may be increased,
Problems such as deterioration in handling will occur.

As a method of forming the above-mentioned spacer without causing such a problem, there is a field of intaglio printing using a well-known intaglio for printing, or a field of forming columnar bumps by paste solder using a printing mask. A method of printing a paste-like spacer material on a glass plate by using an existing printing technology constructed by the above-mentioned method can be considered. According to this method of forming a spacer using a printing intaglio or a printing mask, a fine spacer can be relatively easily formed on the glass plate by printing. It is not necessary to develop an apparatus, and a glass plate on which fine spacers are formed can be provided easily and at low cost. Therefore, by forming the spacer on a glass plate having a normal thickness (about 2.0 mm) by this method of forming the spacer, the appearance and light transmittance are not impaired, and the spacer is thin enough to be practically used. The multilayer glass for heat insulation without warpage can be formed at low cost.

However, if the spacer material is simply printed on the glass plate by a conventionally known printing technique, the top of the spacer formed on the glass plate will be rounded due to surface tension. Another glass plate positioned opposite to the glass plate on which the spacer is formed, is supported by point contact with the spacer,
The spacer material remains on the printing intaglio or the printing mask side, and the spacer material formed on the glass plate becomes a thread-like sharpened shape, and the height of the support surface of the glass plate becomes uneven. Or become.

For this reason, using such a printing technique,
When the spacer material is simply formed by printing on the glass plate, for example, as described above, when the air between the glass plates is evacuated and the gap between the glass plates is evacuated,
Stress and load are concentrated on the top of the spacer, and the spacer may be damaged, or the glass plate may be damaged due to a wavy supporting surface of the glass plate.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat insulating multi-layer capable of easily forming a spacer having a smooth supporting surface of a glass plate and a uniform height. It is an object of the present invention to provide a method and an apparatus for forming a glass spacer, and to provide a multilayer glass for heat insulation that is inexpensive and easy to handle.

[0012]

In order to achieve the above object, an object of the present invention is to provide a method for forming a spacer for a heat insulating multilayer glass in which a spacer is arranged between a plurality of glass plates to form a heat insulating layer. Forming a recess corresponding to the shape and arrangement of the spacers on the printing intaglio, filling the recesses of the printing intaglio with a paste-like spacer material, and closely contacting the printing intaglio with the spacer forming surface of the glass plate. After the paste material is cured, the spacer material is transferred to the glass plate by separating the intaglio printing plate and the glass plate.

In the method of forming a spacer of a multilayer glass for heat insulation, first, a printing intaglio having a recess corresponding to the shape and arrangement of the spacer is prepared. Then, a paste-like spacer material is filled in the concave portion of the printing intaglio plate, the printing intaglio plate is brought into close contact with the spacer forming surface of the glass plate, and after the paste material is cured, the printing intaglio plate and the glass plate are And the spacer material is transferred to the glass plate. According to this spacer forming method, a fine spacer can be relatively easily formed on the glass plate by applying an existing intaglio printing technique constructed in the field of intaglio printing. Further, in this spacer forming method, after the paste-like spacer material filled in the concave portion of the printing intaglio is hardened in a state in which it is in close contact with the spacer forming surface of the glass plate, the printing intaglio and the glass The board is separated. Therefore, according to this spacer forming method, the top of the spacer formed on the glass plate has a rounded shape due to surface tension, or the spacer material remains on the printing intaglio side and remains on the glass plate. The spacer material thus formed does not become a thread-like pointed shape, and a spacer having a smooth supporting surface of the glass plate and a uniform height of the supporting surface of the glass plate is formed. .

According to a second aspect of the present invention, there is provided a method for forming a spacer for a heat-insulating multilayer glass in which a spacer is disposed between a plurality of glass plates to form a heat-insulating layer. An opening is formed in a printing mask, the printing mask is brought into close contact with the spacer forming surface of the glass plate, a paste-like spacer material is filled into a through opening of the printing mask, and the paste material is cured. And separating the spacer from the printing mask and the glass plate by separating the printing mask and the glass plate.

In this method for forming a spacer of a heat insulating multilayer glass, first, a printing mask having a through opening corresponding to the shape and arrangement of the spacer is prepared. Then, the printing mask is brought into close contact with the spacer forming surface of the glass plate, a paste-like spacer material is filled into a through opening of the printing mask, and after the paste material is cured, the printing mask and the printing mask are removed. By separating from the glass plate, the spacer material is transferred to the glass plate. In this spacer forming method, a fine spacer is relatively easily printed on the glass plate by applying an existing printing technique constructed in the field of forming columnar bumps by paste solder using a printing mask. Can be formed. Further, in this spacer forming method, after the paste-like spacer material filled in the through-opening portion of the printing mask is cured in a state in which the paste-like spacer material is in close contact with the spacer forming surface of the glass plate,
The printing mask and the glass plate are separated. Therefore,
According to this spacer forming method, the top of the spacer formed on the glass plate has a rounded shape due to surface tension, or the spacer material remains on the printing mask side and is formed on the glass plate. The spacer material does not become a thread-like pointed shape, and a spacer having a smooth supporting surface of the glass plate and a uniform height of the supporting surface of the glass plate is formed.

The invention according to claim 3 is characterized in that the paste-like spacer material is made of a photocurable resin which is cured by light irradiation.

In this method of forming a spacer for a heat insulating multilayer glass, since the paste-like spacer material is a photocurable resin, the paste material can be easily and quickly cured by light, and the The support surface is smooth,
And a spacer having a uniform height of the support surface of the glass plate,
Printing can be performed more easily.

Further, the invention of claim 4 is characterized in that the photocurable resin is an elastomer type ultraviolet curable resin.

In this method of forming a spacer for a heat insulating multilayer glass, since the photocurable resin is an elastomer type ultraviolet curable resin, the load and stress applied to the top of the formed spacer are dispersed, and the spacer becomes fatigued. Since the spacer is not broken and crushed and the spacer elastically contacts the glass plate, the stress and load applied to the glass plate are absorbed by the spacer.

According to a fifth aspect of the present invention, there is provided a method of forming a spacer of a heat insulating multilayer glass according to the third or fourth aspect.
A light-shielding layer is provided on a surface other than the concave portion of the printing intaglio or the through-opening portion of the printing mask on the side in close contact with the glass plate, and a surface having the light-shielding layer of the printing intaglio or the printing mask. Light is irradiated from the opposite surface to cure the photocurable resin filled in the concave portion or the through opening.

In this method of forming a spacer for a heat insulating multilayer glass, when a printing intaglio in which a concave portion is filled with a photocurable resin is brought into close contact with a glass plate, the photocurable resin is exposed to an area other than the opening surface of the concave portion. Or when the photo-curable resin oozes on the printing mask surface other than the through-opening when the photo-curable resin is filled in the through-opening of the printing mask. Since the light-curing resin in the exuded portion is not irradiated with light by the light-shielding layer, only the photocuring resin filled in the concave portion of the printing intaglio or the through opening of the printing mask is cured. Can be done.

Further, the invention of claim 6 is characterized in that after transferring the photocurable resin to the glass plate, the uncured resin adhering to the glass plate is removed by washing. .

In this method of forming a spacer for a heat insulating multilayer glass, the photocurable resin is transferred to a glass plate,
The uncured photocurable resin adhering to the glass plate can be removed by washing, and a spacer having a uniform shape can be accurately formed on the glass plate.

The invention of claim 7 is characterized in that the intaglio printing plate or the printing mask is a plastic plate.

In the method of forming a spacer for a heat insulating multilayer glass, since the printing intaglio or the printing mask is a plastic plate, the printing intaglio or the printing mask can be formed at low cost and light weight.

The invention according to claim 8 is characterized in that the concave portion of the printing intaglio or the through opening of the printing mask is a concave portion or a through opening formed in the plastic plate by ablation processing. Things.

In the method for forming a spacer of a heat insulating multilayer glass, the plastic plate may be an excimer laser,
Alternatively, since the ablation process is performed using SR light in the ultraviolet region of a synchrotron, a concave portion or a through opening corresponding to the shape and arrangement of the spacer is finely and precisely formed on the intaglio printing plate or the printing mask. it can.

The invention of claim 9 provides the printing intaglio or the printing mask as a flexible endless belt-shaped printing intaglio or the printing mask, wherein the intaglio of the printing intaglio or the printing intaglio is formed. The filling of the spacer material into the through-opening of the printing mask and the transfer of the spacer material to the glass plate are repeatedly performed.

In this method for forming a spacer of a multilayer glass for heat insulation, the above-mentioned flexible endless belt-shaped printing intaglio or printing mask is used to form the concave portion of the printing intaglio or the through-opening of the printing mask. The spacer material can be efficiently printed on the glass plate by repeatedly filling the spacer material into the portion and transferring the spacer material to the glass plate, and the heat insulating multilayer glass having the spacer Productivity is improved.

[0030] The invention of claim 12 is based on claim 1,
An adhesive is applied to the surface of a spacer on a glass plate formed by the method for forming a spacer for a heat-insulating multilayer glass according to 2, 3, 4, 5, 6, 7, 8, or 9, and the glass on which the spacer is formed Another glass plate is attached to the plate via the spacer, and the two glass plates are integrated.

In this multi-layer glass for heat insulation, the two glass plates are integrated, so that the multi-layer glass for heat insulation can be handled in the same manner as a single glass plate.
The handling of the heat insulating multilayer glass is facilitated.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
By the method of forming a spacer of the multilayer glass for heat insulation of the present invention,
An example of a process of forming the spacer 10 on the glass plate 5 will be described. First, the printing intaglio 1 is ablated by a laser processing device (not shown) or the like.
As shown in FIG. 1A, a recess 2 corresponding to the shape and arrangement of the spacer 10 is formed. It is desirable that the concave portion 2 has a shape having a punching taper so that the later-described removability of the spacer material 4 becomes good. On the surface other than the concave portion 2 of the printing intaglio 1 on the side in close contact with the glass plate 5, a light shielding layer 3 made of a metal vapor deposition layer or the like is provided.

Next, as shown in FIG. 1 (b), a squeegee 22
A paste-like spacer material 4 made of an elastomer type ultraviolet curable resin is filled. Then, the printing intaglio 1 filled with the spacer material 4 is placed on the glass plate 5 so that the spacer material 4 is pressed against the spacer forming surface of the glass plate 5 as shown in FIG. Adhered to.

Next, as shown in FIG. 1C, in a state where the printing intaglio 1 is in close contact with the spacer forming surface of the glass plate 5, the surface of the printing intaglio 1 opposite to the surface having the light-shielding layer 3 is opposed. The surface is irradiated with ultraviolet rays 7 to cure the spacer material 4 filled in the recess 2. After the paste material 4 is completely cured, the intaglio printing plate 1 and the glass plate 5 are separated as shown in FIG. As a result, the spacer material 4 is transferred to the glass plate 5, and a spacer 10 made of the spacer material 4 is formed on the glass plate 5.

Next, as shown in FIG. 1E, the surface (top surface) of the spacer 10 formed on the glass plate 5
Then, an adhesive 24 is applied by an adhesive applying roller 23. Then, as shown in FIG.
0 is formed on the glass plate 5 on which the other glass plate 6 is adhered by the adhesive 24 applied to the spacer 10,
A pair glass having a structure in which both glass plates 5 and 6 are integrated is formed. Here, a fixing means such as an aluminum frame or a rubber frame for fixing the periphery of the two glass plates 5 and 6 facing each other is used.
When the glass plates 5 and 6 can be held with a predetermined gap therebetween, it is not always necessary to attach the two glass plates 5 and 6 with the adhesive 24. Further, in the present embodiment, the paired glass in which the two glass plates 5 and 6 are bonded via the spacer 10 has been described. It is possible to easily form a multilayer glass in which the plates are bonded.

FIG. 2 shows an example of a process for forming the spacer 10 on the glass plate 5 by using the printing mask 11 by the method for forming a spacer of the multilayer glass for heat insulation of the present invention. The printing mask 11 includes the printing intaglio 1
As in the case of (1), first, through-holes 12 corresponding to the shape and arrangement of the spacers 10 are formed as shown in FIG. It is desirable that the through-opening portion 12 has a shape having a punching taper so that the later-described removability of the spacer material 4 becomes good. Further, on the surface other than the through-opening portion 12 of the printing mask 11 on the side in close contact with the glass plate 5, a light-shielding layer 3 made of a metal vapor-deposited layer or the like is provided similarly to the case of the printing intaglio 1. ing.

Next, the printing mask 11 shown in FIG.
As shown in (b), the glass plate 5 is closely adhered onto the glass plate 5 such that the surface on which the light shielding layer 3 is provided is pressed against the spacer forming surface. Then, a squeegee 22 is applied to the through opening 12 of the printing mask 11 by using a squeegee 22.
For example, a paste-like spacer material 4 made of an elastomer type ultraviolet curable resin is filled.

Next, as shown in FIG. 2C, the surface opposite to the surface having the light-shielding layer 3 of the printing mask 11 in a state where the spacer material 4 is in close contact with the spacer forming surface of the glass plate 5. UV light 7 is irradiated from the
The spacer material 4 filled in 2 is cured. After the paste material 4 is completely cured, the printing mask 11 and the glass plate 5 are separated as shown in FIG. As a result, the spacer material 4 is transferred to the glass plate 5, and a spacer 10 made of the spacer material 4 is formed on the glass plate 5.

Then, similarly to the process shown in FIGS. 1E and 1F, the adhesive 24 is applied to the surface (top surface) of the spacer 10 formed on the glass plate 5 by the adhesive applying roller 23. Is applied, and another glass plate 6 is adhered to the glass plate 5 on which the spacers 10 are formed by the adhesive 24 applied to the spacers 10, so that the two glass plates 5 and 6 are integrated. A pair glass is formed.

According to this spacer forming method, after the paste material 4 is completely cured, the printing intaglio 1 or the printing mask 11 and the glass plate 5 are separated from each other. The top of the spacer 10 thus formed becomes rounded due to surface tension, or the spacer material 4 remains on the printing intaglio 1 or the printing mask 11 side and the spacer material 4 formed on the glass plate 5 The spacer 10 does not become a stringy shape and the support surface of the glass plate 6 is smooth, and the height of the support surface of the glass plate 6 is uniform.

Accordingly, as described above, each glass plate 5,
6 is sealed with a sealing material (not shown), and the air between the glass plates 5 and 6 is evacuated to make the gap between the glass plates 5 and 6 a vacuum state. A dry air or dry nitrogen (N ₂ ) gas is sealed between the glass plates 5, 6 to form a heat insulating layer between the glass plates 5, 6, and the heat insulating layer reduces the convection of air between the glass plates 5, 6. By eliminating or reducing the heat exchange between the glass plates 5 and 6, the multilayer glass for heat insulation free from warpage is produced. In addition, in this heat insulating multilayer glass,
Since the two glass plates 5 and 6 are integrated, the heat insulating multilayer glass can be handled in the same manner as a single glass plate, and the handling of the heat insulating multilayer glass is facilitated.

The squeegee 22 shown in FIGS. 1B and 2B is generally formed of an elastic body such as a rubber blade. However, when the squeegee 22 made of such an elastic body is used, when the spacer material 4 is squeezed and filled in the recess 2 of the printing intaglio 1, FIGS. ), The squeegee 2
In a state in which the recesses 2 correspond to the recesses 2, the corresponding portions may bite into the recesses 2 by elasticity, and the upper portion of the spacer material 4 filled in the recesses 2 may be hemispherically removed. When the upper portion of the spacer material 4 filled in the concave portion 2 of the printing intaglio 1 is cut off as described above, the printing intaglio 1 is brought into close contact with the glass plate 5 as shown in FIG. In such a case, there occurs a problem that the spacer member 4 does not come into pressure contact with the glass plate 5.

In order to fill the recess 2 of the printing intaglio 1 with the spacer material 4 by squeezing, as shown in FIG. 3C, for example, a rigid member made of a metal plate or the like is used. Using the squeegee 22 having
Correspond to the recess 2, but the corresponding portion is
It is preferable not to dig into the surface.

On the other hand, as shown in FIG. 2B, when the spacer material 4 is squeezed and filled into the through-opening portion 12 of the printing mask 11, the squeegee 22 is made of an elastic material. You may use what was done. That is, when the squeegee 22 made of such an elastic body is used, the through-opening 12 of the printing mask 11 is used.
In addition, when the spacer material 4 is squeezed and filled, in a state where the squeegee 22 corresponds to the through-opening 12, the corresponding portion bites into the through-opening 12 by elasticity. The top of the spacer material 4 filled in the glass plate 5, that is, the top surface of the spacer 10 formed on the glass plate 5 is cut off in a hemispherical shape. Thereby, as shown in FIG. 1 (f), when another glass plate 6 is pasted to the glass plate 5 via the spacer 10, the top surface of the spacer 10 that has been cut off in the hemispherical shape, By acting as a suction cup, it is possible to prevent the glass plate 6 from being displaced when the glass plate 6 is bonded and fixed to the glass plate 5.

FIG. 4 is a cross-sectional view schematically showing an example of an apparatus for forming a spacer 10 on the above-mentioned glass plate 5 by the method for forming a spacer for a heat-insulating multilayer glass of the present invention, and FIG. -It is an expanded sectional view explaining a situation of hardening. In FIG. 4, the printing intaglio 1 is formed in a flexible endless belt shape, and is rotated while being moved in the direction of the arrow by a driving roller 8 of a driving device.

As shown in FIG. 5, the outermost surface of the intaglio printing plate 1 is coated with a hard, opaque, abrasion-resistant light-shielding layer 3 such as titanium oxide.
A concave portion 2 for printing as shown in FIG. In FIG. 4, when the printing intaglio 1 rotates, a paste-like spacer material 4 made of an elastomer type ultraviolet curable resin is placed in the recess 2 of the printing intaglio 1 at the location of the squeegee 22 which has been subjected to the conductive treatment. Is filled. The concave portion 2 of the printing intaglio 1 further rotates and proceeds to the transfer step.

On the other hand, the glass plate 5 sent from the previous process
Is passed through an ultraviolet irradiation device 9 for surface modification to improve wettability, and is placed on a pallet 15 of a transport device 14 moving on a surface platen table 13, and a transfer process is performed with the spacer formation surface facing upward. It is transferred to. The glass plate 5 and the concave portion 2 of the intaglio printing plate 1 are brought into close contact with each other after the amount of misalignment is measured by the image recognition device 16 located at the forefront of the transfer step, and alignment is performed.

The spacer material 4 made of an elastomer-type ultraviolet curable resin filled in the concave portion 2 of the printing intaglio 1 is a roller 17 made of quartz glass having a good ultraviolet transmittance.
The resin is pressed against the surface of the glass plate 5 by an ultraviolet ray 7 emitted from a resin curing ultraviolet lamp 18 installed in a hollow portion inside the glass plate 5 to cure the glass plate 5 while promoting adhesion, and is fixed to the glass plate 5.

That is, in the transfer process section, as shown in FIG. 4, the upper part of the printing intaglio 1 is pressed by the roller 17 made of quartz glass, so that the printing The intaglio plate 1 for printing is brought into close contact with the glass plate 5 to promote adhesion of the uncured spacer material 4 filled in the concave portion 2 of the intaglio plate 1 for printing.

In this manner, the ultraviolet rays 7 from the ultraviolet lamp 18 installed in the hollow portion of the roller 17
The uncured spacer material 4 penetrating the transparent intaglio 1 for printing and filling the recess 2 is cured. At this time, since the surface of the printing intaglio 1 around the concave portion 2 is coated with the light-shielding layer 3 that does not transmit ultraviolet light, the spacer material that exudes around the concave portion 2 that becomes a shadow of the light-shielding layer 3. In 4a,
The ultraviolet rays 7 are not irradiated. Therefore, exposure of the portion of the spacer material 4a not irradiated with the ultraviolet rays 7 is completed without being cured. As a result, the uncured spacer material 4a oozing around the concave portion 2 can be easily removed in the cleaning tank 19 of the glass plate 5 in the post-processing step, and the spacer material 4a on the spacer forming surface of the glass plate 5 can be removed. Therefore, there is no problem that the appearance of the glass plate 5 is deteriorated.

When the printing intaglio 1 in the form of an endless belt is further rotated, the printing intaglio 1 is separated from the glass plate 5 by a separating device 20 disposed downstream of the transfer process section, and the spacer material is removed. 4 is transferred to a glass plate 5, and a spacer 10 is formed on the glass plate 5.

In this way, the intaglio printing plate 1 on which the transfer of the spacer material 4 has been completed is uncured by the intaglio belt cleaning device 21 arranged on the upper rotation path and exuding around the recess 2. Spacer material 4a or glass plate 5
Foreign matter such as minute fragments (cullet) is removed. The intaglio printing plate 1 is further rinsed with a cleaning agent in a rinsing tank 25 disposed adjacent to the intaglio belt cleaning device 21 and dried in a drying chamber 26 disposed adjacent to the rinsing tank 25. The spacer material 4 is rotated toward a squeezing process section of the spacer material 4 after a process of improving the releasability is performed by a release agent applying device 27 arranged adjacent to the drying chamber 26.

In this manner, the printing intaglio 1 is circulated through the pretreatment step of releasing agent application, the squeezing step, the transfer step from adhesion to peeling, and the post-treatment step from washing to drying. The printing of the space material 4 on the glass plate 5 is repeated to form the spacers 10 on the sequentially conveyed glass plate 5.

Here, in the circulation step, the filling of the spacer material 4 is hindered by the incorporation of bubbles into the spacer material 4 and the intrusion of air into the concave portion 2 in the filling step, or the atmospheric pressure in the transfer step. Therefore, it is desirable that at least the range from the filling step to the transfer step including the transfer step be a reduced-pressure atmosphere or vacuum.

By the way, in this embodiment, an example in which an ultraviolet curable resin is used as the spacer material 4 has been described.
This spacer material 4 may be a thermosetting resin,
If the bleeding of the spacer material 4 when filling the printing mask 11 is not a problem, a two-component curable resin may be used. Note that it is preferable to use the spacer material 4 that causes volume shrinkage due to its curing, in order to form a smaller gap between the opposing glasses.

Further, a colored resin may be used as the spacer material 4 and characters and images may be formed by the spacer material 4. Thereby, it is possible to easily provide a multi-layer glass for heat insulation provided with a design, advertising characters, and the like.

[0057]

According to the first to twelfth aspects of the present invention, fine spacers can be relatively easily formed on the glass plate by applying existing printing techniques. Further, in this spacer forming method, after the paste-like spacer material is cured in a state in which it is in close contact with the spacer forming surface of the glass plate, the printing intaglio or printing mask is separated from the glass plate. The top of the spacer formed on the glass plate becomes rounded due to surface tension, or the spacer material remains on the printing intaglio or printing mask side, and the spacer material formed on the glass plate becomes a thread. A heat-insulating multilayer glass free from warping and having a smooth supporting surface of the glass plate and a uniform height of the supporting surface of the glass plate without forming a spacer. Can be produced.

In particular, according to the twelfth aspect of the present invention, since a plurality of glass plates are integrated, the multilayer glass for heat insulation can be handled in the same manner as a single glass plate. The handling of the multilayer glass can be facilitated.

[Brief description of the drawings]

FIG. 1 is a schematic process diagram for explaining an example of a process of forming a spacer on a glass plate by a method of forming a spacer of a heat insulating multilayer glass of the present invention using an intaglio printing plate.

FIG. 2 is a schematic process diagram for explaining an example of a process of forming a spacer on a glass plate by a method for forming a spacer of a multilayer glass for heat insulation of the present invention using a printing mask.

FIGS. 3A, 3B, and 3C are schematic perspective views for explaining a squeezing step of the above steps;
And a schematic sectional view.

FIG. 4 is a cross-sectional view schematically illustrating an example of an apparatus for forming a spacer on a glass plate by the method for forming a spacer of a heat insulating multilayer glass according to the present invention.

FIG. 5 is an enlarged cross-sectional view illustrating a state of exposure and curing in a transfer step of the apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 printing intaglio 2 printing intaglio recess 3 light shielding layer 4 spacer material 5, 6 glass plate elastomer type ultraviolet curing resin paste 7 ultraviolet 8 drive roller 9 ultraviolet irradiation device 10 spacer 11 printing mask 12 printing mask through-opening 13 Surface Plate Table 14 Transport Device 15 Pallet 19 Cleaning Tank 20 Separation Device 22 Squeegee 23 Adhesive Application Roller 24 Adhesive

Claims (12)

[Claims] 1. A method of forming a spacer for a heat-insulating multilayer glass in which a spacer is arranged between a plurality of glass plates to form a heat-insulating layer, wherein recesses corresponding to the shape and arrangement of the spacers are formed in a printing intaglio. Filling the concave portion of the printing intaglio with a paste-like spacer material, bringing the printing intaglio plate into close contact with the spacer forming surface of the glass plate, and curing the spacer material. And transferring the spacer material to the glass plate by separating the spacer. 2. A method for forming a heat insulating multilayer glass spacer in which a heat insulating layer is formed by disposing a spacer between a plurality of glass plates, wherein a through-opening corresponding to the shape and arrangement of the spacer is formed in a printing mask. Then, the printing mask is brought into close contact with the spacer forming surface of the glass plate, a paste-like spacer material is filled into a through opening of the printing mask, and after the paste material is cured, the printing mask and the printing mask are removed. A method for forming a spacer of a multilayer glass for heat insulation, wherein the spacer material is transferred to the glass plate by separating the spacer material from the glass plate. 3. The method according to claim 1, wherein said paste-like spacer material is made of a photocurable resin which is cured by light irradiation. 4. The method according to claim 3, wherein the photocurable resin is an elastomeric ultraviolet curable resin. 5. The method for forming a spacer for a heat-insulating multilayer glass according to claim 3 or 4, wherein a surface other than the concave portion of the intaglio plate for printing or the through-opening portion of the printing mask on the side in close contact with the glass plate. A light-blocking layer is provided, and light is irradiated from the surface of the intaglio for printing or the printing mask opposite to the surface having the light-blocking layer to cure the photocurable resin filled in the recess or the through-opening. A method for forming a spacer of a multilayer glass for heat insulation, characterized by comprising: 6. The multi-layer glass for heat insulation according to claim 5, wherein the uncured resin adhering to the glass plate is removed by washing after transferring the photocurable resin to the glass plate. Spacer formation method. 7. The printing intaglio plate or the printing mask is a plastic plate.
7. The method for forming a spacer of a multilayer glass for heat insulation according to 3, 4, 5, or 6. 8. The heat insulating material according to claim 7, wherein the concave portion of the intaglio printing plate or the through opening of the printing mask is a concave portion or a through opening formed in the plastic plate by ablation processing. A method for forming a multilayer glass spacer. 9. The printing intaglio or the printing mask is a flexible infinity belt-shaped printing intaglio or the printing mask, and a concave portion of the printing intaglio or a through opening of the printing mask. Wherein the filling of the spacer material into the glass plate and the transfer of the spacer material to the glass plate are repeated.
9. The method for forming a spacer of the multilayer glass for heat insulation according to 7 or 8. 10. A heat insulating multilayer glass spacer forming apparatus in which a heat insulating layer is formed by disposing a spacer between a plurality of glass plates, wherein a concave portion corresponding to the shape and arrangement of the spacer is formed on a printing intaglio plate. Filling the concave portion of the printing intaglio with a paste-like spacer material, bringing the printing intaglio plate into close contact with the spacer forming surface of the glass plate, and curing the spacer material. The spacer material is transferred to the glass plate by separating the spacer material. 11. A heat insulating multilayer glass spacer forming apparatus in which a heat insulating layer is formed by disposing a spacer between a plurality of glass plates, wherein a through-opening corresponding to the shape and arrangement of the spacer is formed in a printing mask. Then, the printing mask is brought into close contact with the spacer forming surface of the glass plate, a paste-like spacer material is filled into the through-opening portion of the printing mask, and after the spacer material is cured, the printing mask and the printing mask are removed. A heat insulating multilayer glass spacer forming apparatus, wherein the spacer material is transferred to the glass plate by separating the spacer material from the glass plate. 12. The method of claim 1, 2, 3, 4, 5, 6, 7,
An adhesive is applied to the surface of the spacer on the glass plate formed by the method of forming a spacer for a heat-insulating multilayer glass according to 8 or 9, and another glass plate is applied to the glass plate on which the spacer is formed via the spacer. A multilayer glass for heat insulation, wherein both glass plates are attached to each other.