JP2002029788A - Double glazing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spacer to be sued for a double grazing capable of obtaining high reliability to sealing with a transparent plate-shaped body such as glass being a structuring material, and reducing the manufacturing costs by simplifying the manufacturing process of the double grazing. SOLUTION: A spacer is formed by fixing U type groove-shaped members to a rectangular plate, and the side wall of the U type groove-shaped members is constituted so that plural rectangular plates can be continuously erected while inclined at a fixed angle. This spacer is used for the double glazing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to windows for buildings such as houses and buildings, windows for vehicles such as automobiles and trains, windows for ships and aircraft, freezers, freezer showcases, and the like.
The present invention relates to a double-glazed glass having a heat insulating performance and / or a sound insulating performance used for an opening requiring energy saving such as a window of a facility device such as a constant temperature and humidity chamber, and a spacer which is a structural material of the double-glazed glass.

[0002]

2. Description of the Related Art In recent years, in order to provide a comfortable environment in a room or in a company, which is a living space, double-glazed glass having heat insulation performance, which is excellent in cooling and heating effects and energy saving, has been increasingly used and has been rapidly spreading. . In the double glazing, various structures are used and proposed.

For example, Japanese Unexamined Patent Publication (Kokai) No. 59-45149 discloses a hollow cylindrical body made of aluminum and the like filled with a desiccant as a spacer for double-glazing.

[0004] JP-A-59-45149 discloses a
Double-layer glass manufactured by the so-called dual seal method,
It is currently the most commonly used. As shown in the cross-sectional view of the main part of the multilayer glass in FIG. 7, the dual seal method cuts a cylindrical aluminum spacer a into predetermined dimensions,
Each corner end is connected or bent using a corner connection joint to form a frame.
And a glass plate b of the frame of the aluminum spacer a,
A butyl rubber-based sealing material is applied as a primary sealing material d to the two surfaces to be bonded to b ', and is applied to the inside of the peripheral edge of one of the glasses b, and then the other glass plate is placed thereon b 'is pressed and adhered and integrated with a butyl rubber-based elastic body d to be sealed and then sealed in an open dent formed by two glass plates b and b' and an outer surface of an aluminum spacer a. A multi-layer glass which is coated and filled with a liquid polysulfide-based, silicone-based, or polyurethane-based resin as the next sealing material e, and is cured at a temperature around room temperature while being firmly bonded and integrated with the glass plates b and b '. Manufacturing method and structure.

[0005] For example, Japanese Patent Application Laid-Open No. 6-123191 discloses that a continuous rigid spacer such as a corrugated aluminum plate is embedded in a self-adhesive resin layer filled with a desiccant. Is attached to the inside of the peripheral edge of one of the glass plates, and then the other glass plate is attached and crimped, and integrated with a butyl rubber-based elastic body. A so-called single-sealed double glazing in which a sealed internal space is formed is described, and is currently used for some double glazings.

[0006] For example, in Japanese Patent Application Laid-Open No. Hei 7-223848, at least two glass plates are arranged so that an inner space is formed with a spacer interposed therebetween at the peripheral edge, and the peripheral edge is sealed. In the multilayer glass
The spacer includes a moisture-permeable resin material layer having at least low moisture permeability and a desiccant and an adhesive layer that seals a peripheral portion, and the low moisture-permeable layer is formed from the outer periphery of the moisture-permeable resin material layer and the double-layer glass. A double glazing is disclosed which is interposed between the outside air and the outside and at least a part of the moisture-permeable resin material layer communicates with an internal space.

[0007] For example, in Japanese Patent Application Laid-Open No. Hei 8-91879, a rubber spacer in which a desiccant is dispersed and mixed, which is flexible and self-adhesive, is disposed around a plurality of glass plates. In the double-glazed glass assembled by providing an internal space between these glass plates, a nonwoven fabric or a woven fabric carrying a desiccant is attached to part or all of the surface of the spacer in contact with the internal space. Is disclosed.

[0008] For example, Japanese Patent Application Laid-Open No. 8-143340 discloses a multilayer structure in which at least two glass plates are opposed to each other at a predetermined interval via a spacer on the periphery thereof so as to form an internal space. Glass, wherein the spacer has a structure in which an inner layer made of a thermoplastic resin material containing a moisture absorbing material, an inner space made of a film, and an outer layer made of a thermoplastic resin material are laminated in this order from the inner space side. A double glazing characterized by the following is disclosed.

[0009] For example, Japanese Patent Application Laid-Open No. Hei 8-13936 discloses a technique for imparting an easy bending property to one side face facing the peripheral end face when the glass sheets are spaced from each other. A spacer main body made of a shape-retaining material having a cut portion, and a non-moisture-permeable member disposed on the other side of the spacer main body to block between the outside and the internal space formed between the sheet glasses. There is disclosed a spacer for a double glazing characterized in that a member and a moisture-absorbing member for dehumidifying the air in the internal space are laminated and integrated on the non-moisture-permeable member.

[0010]

However, in the double glazing using a cylindrical aluminum spacer described in JP-A-59-45149 described above, the cylindrical aluminum spacer is previously cut to a predetermined size. Fill the inner space with a desiccant and join each end using a corner connection joint to assemble it into a frame, or bend it into a predetermined shape and join the ends using a connection key. After being assembled into a frame, the hollow portion is filled with a desiccant. Next, a butyl rubber-based sealing material is applied as a primary sealing material to two surfaces of the cylindrical aluminum spacer frame that are bonded to the glass,
After sticking this slightly to the inside of the peripheral edge of one of the glass plates, the other glass plate is stuck thereon and pressure-bonded, adhered and integrated with a butyl rubber-based elastic body, and further two glass plates. A liquid polysulfide-based, silicone-based, and polyurethane-based resin is applied and filled as a secondary sealing material in an open concave space having an approximately U-shaped outer cross-section formed by a cylindrical aluminum spacer, and the room temperature is maintained at around room temperature. At the same time as curing at a temperature, it is firmly bonded to and integrated with the glass plate, and the manufacturing process is complicated, thereby increasing the manufacturing cost. Also, various types of corner connection joints have been devised, but it is inevitable that the cost will be higher than when no corner connection joint is used. Even if you do n’t use corner connection joints,
The processing of the corners, such as welding and bonding of the aluminum spacer, is required, and the man-hour is required.

Further, since the secondary sealing material is in a liquid state, if the application conditions in the application step are poorly adjusted, a shortage of the liquid in the corner portion and a dripping in the linear portion occur. Workability decreases due to the repair,
There are problems such as a decrease in yield due to contamination of the glass plate.

The double-glazing described in JP-A-6-123191 has a structure in which a continuous rigid spacer, for example, a corrugated aluminum plate, is embedded in a self-adhesive resin layer filled with a desiccant. Since the string-like material is merely disposed at the peripheral edge of the glass plate or slightly inside thereof, the manufacturing process is simplified and the manufacturing cost is relatively low. However, the adhesive strength between the glass layer and the self-adhesive resin layer filled with a desiccant, for example, in a warehouse in the summer, when the environment temperature is high, when stored, since it is significantly reduced. However, depending on the storage state, there is a problem that shear deformation occurs before fitting into the sash.
In order to prevent this shear deformation, a secondary seal is formed in the open U-shaped recess formed by two glass plates and spacers when viewed from the outside, as in the case of using a cylindrical aluminum spacer. Liquid polysulfide, silicone, or polyurethane resin is applied and filled as an adhesive, cured at a temperature around room temperature, and simultaneously firmly adhered to the glass plate and integrated. Since the seal type is used, the advantage that the manufacturing cost of the single seal type is inexpensive is not only lost, but it is rather expensive compared to the ordinary dual seal type. In this case, since the secondary sealing material is in a liquid state, as described above, if the adjustment of the application conditions in the application step is poor, a shortage of the liquid in the corner portion and a dripping in the linear portion occur. There is a problem that the workability is reduced due to the repair, and the yield is reduced due to the stain on the glass plate.

Further, the double-glazing described in JP-A-7-223848, JP-A-8-91879, and JP-A-8-143340 does not use an aluminum spacer, so that the frame of the aluminum spacer is not used. Although there is an advantage that there is no need to assemble, the resin spacer is less rigid than the aluminum spacer, so it is easy to deform, it can not be stacked flat during the curing period, and even if it is placed vertically, There is a problem that deformation occurs due to the weight of the double-glazed glass.

For example, the spacer for double-glazing described in Japanese Patent Application Laid-Open No. H8-13936 can be easily folded on one side facing the peripheral end face when the glass sheets are spaced from each other. A spacer main body made of a shape-retaining material having a cut portion for imparting a curvature, and an inner space and an outer space provided between the glass sheets and disposed on the other side of the spacer main body. A cut-off portion formed by laminating and integrating a moisture-impermeable member that blocks between the air-permeable member and a moisture-absorbing member that superimposes the moisture-impermeable member on the non-moisture-permeable member to dehumidify the air in the internal space. In the case of flat stacking using a spacer body made of a shape-retaining material having the following, the spacing can be maintained, but since the spacer body has no adhesive means on the two surfaces that come into contact with glass, If this occurs, slippage deformation will occur. There is a problem in that.

The inventor of the present invention has made intensive studies to solve the above-mentioned problems. As a result, the first spacer is made of a highly rigid first spacer made of a rigid member coated with a self-adhesive moisture-impermeable resin and a thermosetting resin. A method for producing a double glazing based on combining a string-shaped second spacer has been developed, and the shape and arrangement of the spacers are different from those disclosed in JP-A-11-7.
9798, JP-A-11-100240, JP-A-11-107644, JP-A-11-1304
No. 76, Japanese Unexamined Patent Application Publication No. 11-130467, Japanese Unexamined Patent Application Publication No. 11-130478, Japanese Unexamined Patent Application Publication No. 11-171603
And Japanese Patent Application Laid-Open No. 11-189439 have disclosed a method for producing a double-glazed glass.

In these publications, the first spacer and the second spacer are formed in advance and can be easily arranged, so that the manufacturing process can be simplified and the obtained spacer can be obtained. Since the rigidity of the double-glazed glass is high, the present invention provides a double-glazed glass capable of maintaining a gap and suppressing plate slippage and a method for producing the double-glazed glass, and further curing a liquid sealing agent. This is to solve the problem in the manufacturing process of the double glazing.

However, in order to solve the problems involved, further reduce the man-hours, and keep the manufacturing cost low,
It is more advantageous to use a single-sealed double-glazed glass that requires only one spacer than to use a plurality of spacers.

[0018]

The inventor of the present invention has conducted various studies in order to solve the problems at issue. As a result, the present inventors have compared the conventional dual seal type as well as the series of inventions using the above two sets of spacers. Even so, the present invention has been accomplished to complete an inexpensive, easily bendable, single-seal spacer and a double glazing using the spacer, which requires less man-hours. When the spacer of the present invention is used, not only the corner joint is not used, but also depending on the shape of the spacer of the present invention, in addition to the function as a positioning member, a liquid sealant is filled and cured outside the spacer. This makes it possible to reduce the number of man-hours at the time of manufacturing and to form the peripheral edge of the double-layered glass firmly in structure.

According to the present invention, there is provided a spacer used for a multi-layered glass having a sealed internal space provided with a spacer for maintaining the interval at a peripheral edge of two glass plates separated at a predetermined interval, The spacer is characterized in that the side wall of the U-shaped groove-shaped member is formed by continuously erected a plurality of rectangular plates at a predetermined angle.

Further, the present invention relates to a spacer used for a double glazing having a sealed internal space, wherein a spacer for maintaining the interval is provided at the peripheral edge of two glass plates separated at a predetermined interval. A U-shaped groove-shaped member is fixed to a long plate, and the side walls of the U-shaped groove-shaped member are formed by continuously erection of a plurality of rectangular plates at a predetermined angle. A spacer characterized in that:

Further, the present invention is a double glazing comprising the above spacer and the peripheral edge of the two glass plates constituting the double glazing, which are opposed to each other.

Further, the present invention provides the double-glazed glass described above, wherein a desiccant is arranged between the U-shaped groove-shaped members using the above-mentioned spacer.

Further, the present invention is the above-mentioned multilayer glass, wherein the above-mentioned spacer is provided over the entire periphery of the peripheral edge of the multilayer glass.

Further, the present invention is characterized in that a notch of a predetermined length is formed on both sides of a long plate made of stainless steel wound on a roll, and the plate is bent to form a U-shaped groove member. This is a method for producing the above spacer.

Further, the present invention relates to a U-shaped groove-shaped member formed by cutting a predetermined length of cut on both sides of a long stainless steel plate wound on a roll and bending the plate. And welding or bonding a long plate made of stainless steel as described above.

FIG. 1 shows an example of the shape of the spacer 1 of the present invention. A plurality of rectangular plates 2 are erected continuously by being inclined at a fixed angle to form a U-shaped groove member, and are fixed to a long plate 3, and a plurality of rectangular plates 2 are formed from the long plate 3. Is projected. When a plurality of rectangular plates 2 are inclined at a certain angle and continuously protruded from the long plate 3, when a double-glazed glass is produced using the spacer 1 of the present invention, the rectangular plate is formed by a pair of glass plates. Has sufficient strength as a spacing member, and it is easy to fill the U-shaped groove between the plate rows with the desiccant 5, to easily apply an adhesive to the outside of the plate row, and to make the adhesive layer thick. And sufficient reliability for sealing is obtained.

In particular, since a plurality of rectangular plates 2 serving as a pair of glass spacing members are oblique with respect to the surface of the glass plate when the glass is formed as a double-glazed glass, the plate row is spaced from the internal space of the double-glazed glass. It has sufficient rigidity and strength as a holding member.

The material of the spacer 1 according to the present invention may be a rigid material regardless of a metal or a resin. High-rigidity engineering plastics, plastics containing aramid fibers or carbon fibers can also be used as the material of the spacer 1 of the present invention. If the spacer 1 is easy to manufacture and the spacer 1 is inexpensive, it can be used. For example, stainless steel and duralumin are preferable because they do not deteriorate the surface such as rust and have sufficient strength even if they are thin.

A specific example of manufacturing the spacer 1 of the present invention is as follows. A long plate made of stainless steel wound on a roll is cut into a predetermined length on both sides and bent. And electrically welding the U-shaped grooved member to another long plate 3 made of stainless steel. It is also possible to bond using an adhesive capable of firmly bonding, for example, an epoxy-based adhesive, but it is preferable to perform welding from the viewpoint of reliability that there is no fear of peeling.

Next, as shown in FIG. 2, when the spacer 1 of the present invention is bent to form a corner portion of the double-glazed glass, the long plate 3 is bent to form a plurality of rectangular plate rows 2.
Also, the spacer frame can be easily bent while maintaining the interval, so that the spacer frame can be manufactured without the need for the corner connection joint. At that time, the processing of the last corner portion is such that the rectangular plate row 2 has only a portion where the long plates 3 are overlapped, and the long plates 3 are electrically welded to each other or bonded with an adhesive. And then join them together. Welding is preferable in terms of reliability that there is no fear of peeling, but when bonding, it is necessary to use an epoxy-based adhesive or the like to firmly bond. In the multilayer glass of the present invention, it is possible to produce a spacer frame serving as a positioning member and fit the glass plates 4 and 4 ′, that is, to provide the spacer 1 all around the outer peripheral edge of the multilayer glass. This is preferable because a double-glazed glass can be easily produced without performing corner processing.

After fabricating the spacer frame, as shown in FIG. 3 which is a cross-sectional view of the main part of the double-glazed glass of the present invention, a drying material 5 is placed in a plurality of rectangular plate rows which are members for maintaining the space of the internal space 7. After being arranged by means such as filling or bonding between the two, an adhesive 6 is applied to the outside of the plurality of plate rows 2, and two glass plates 4 and 4 ′ are fitted into the spacer frame and pressure-bonded, Obtain double glazing.

As compared with the conventional dual seal type, the production of a single seal type double glazing using the spacer 1 of the present invention is extremely simple.

That is, the spacer 1 of the present invention is used as a sealing material for sealing the internal space 7 and keeping it in a dry state. In addition, it functions as a positioning material, and also serves as a positioning material, and the glass plates 4, 4 'may be fitted into the spacer frame during manufacturing. Can be used to produce a double-glazed glass.

Further, when the spacer 1 of the present invention is bonded and integrated with the glass plates 4 and 4 'to form a multi-layer glass, the spacer 1 has a shape which holds the glass end face. Even if glass has to be stored, it is possible to suppress the slippage of the plate, and if the aluminum sash with double glazing will reach a temperature of 60 ° C or more due to strong solar radiation after construction on the building In this case, the deformation of the end portion of the multilayer glass due to the expansion of the gas sealed in the internal space 7 of the multilayer glass can be suppressed.

Compared with the conventional dual-sealing double-glazing system, a high-viscosity liquid curable resin is applied and cured as a secondary sealing material after the spacers are provided, or heated. There is no need to fill and cure a molten high-viscosity thermoplastic resin in a fluid state, and the number of steps can be reduced.
In addition, there is no need for a precise control device to supply a fixed amount of secondary sealing material without excess or shortage, and the initial capital investment amount can be kept small. Degradation of glass and glass plate 4,
There is no problem that the product yield is reduced due to the contamination of 4 ′ and the like, and there is no possibility that the entire production line is stopped due to this.

It is also possible to apply the spacer 1 of the present invention to a conventional double-sealed double-layer glass. In this case, as shown in a perspective view of an example of the spacer 1 in FIG. 4, there is no plate that holds the peripheral edge of the glass plate on both sides of the plurality of rectangular plate rows 2, and it is easy to bend. There is no need to use a corner connection joint at the corner, and the man-hour for cutting the spacer 1 to a predetermined size and connecting with the corner connection joint can be omitted as compared with the case where a conventional dual seal type spacer is used. The simplest and most preferable method for manufacturing the spacer shown in FIG. 4 is to cut a predetermined length of cut on both sides of a long stainless steel plate wound in a roll shape and then bend the plate.

Further, in order to save the man-hour for manufacturing the spacer 1 of the present invention, a cut may be made only in the corner portion to form the spacer of the present invention. In this case, the straight portion excluding the corner portion is processed so that the spacer has a U-shape without cutting.

[0038]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 3, which is a cross-sectional view of a main part of an example of the double-glazed glass of the present invention, the structure of the end portion of the double-glazed glass of the present invention is shown in FIG. The peripheral edge of 4 ′ is held by a spacer 1 composed of a plurality of plate rows 2 and a long plate 3 as glass holding members. ′ And the spacer 1 are adhered to each other to seal the internal space 7.

On the two glass plates 4 and 4 ', clear float plate glass, heat absorbing plate glass, heat reflecting plate glass, high-performance heat reflecting plate glass, lined plate glass, netted plate glass, template plate glass, tempered glass, double strength Glass, low-reflection glass, water-repellent glass, hydrophilic glass, photocatalytic glass, conductive glass, highly transparent glass, ground glass, tapesti (frost) glass, ceramic printing glass, fusion glass, stained glass, laminated glass, Various glass sheets such as low-expansion glass sheets (including borosilicate glass) and low-melting glass sheets can be appropriately combined, but in order to obtain a sufficient heat insulating performance, which is a characteristic of the double-glazed glass, at least one of these glass sheets must be used. Low-emission plate glass with a special metal film coated on various plate glass, or It is preferable to use a low radiation plate glass to which a resin film coated with a special metal film is attached.

As the low radiation plate glass, JIS R
Multi-layer glass using one or more low-emissivity glass having a vertical emissivity of 0.20 or less, preferably 0.10 or less, as specified in 3106-1998 (Testing method for transmittance, reflectance and solar heat gain of sheet glass) Or a double glazing using two glasses having a vertical emissivity of 0.35 or less, preferably 0.25 or less.

The thickness of each of the two glass plates 4 and 4 'is usually 1.9 mm or more. However, this is not the case for tempered glass, especially for chemically tempered glass. 1.9 mm or less can be used.

In the embodiment, two glass plates 4, 4 'are used.
However, it goes without saying that three or more glass plates may be combined at intervals. Further, in addition to the inorganic glass, a transparent resin plate such as an acrylic plate and a polycarbonate plate, that is, an organic glass may be used, and there is no particular limitation.

The distance between the two glass plates 4, 4 'is 0.2
mm or more, preferably 2 mm or more. Even when three or more glass plates are used in combination, the distance between them is also 0.2 mm or more, preferably 2 mm or more.

In the spacer 1 of the present invention, as a desiccant to be disposed between the plurality of rectangular plate rows 2, which are spacing members, silica gel, sintered silica, activated carbon, activated alumina, anhydrous calcium sulfate, zeolite (3A, 4
A, 5A, 13X) and the like, and a method of filling a silicone material containing a desiccant or butyl rubber as a desiccant 5 between the plate rows, a double-sided tape, silicone, butyl rubber, a resin, or the like; A method of attaching, or a method of attaching a woven or non-woven fabric carrying a desiccant between the plate rows is conceivable. The method of filling silicone or butyl rubber containing a desiccant between the rows of the plates increases the rigidity of the spacer 1 of the present invention and the strength of the double glazing according to the present invention. The interval between the sheet glasses 4 does not easily change even if the sheet glass is pushed inward. In addition, since the strength of the spacer 1 of the present invention as a spacing member for the internal space 7 of the double-glazed glass can be increased, silicone or butyl rubber containing a desiccant is filled as a desiccant 5 between the plate rows. Is preferred. The desiccant 5 obtained by kneading a desiccant such as zeolite into silicone or butyl rubber is
It is dust-free and has good adhesion to other substances without polluting the inner space 7 of the double-glazed glass, and its moisture absorption performance is slightly inferior to using a granular or dispersing desiccant as it is, but the construction is simple. , Is usually used.

The shape of the desiccant used alone or kneaded into silicone or butyl rubber may be in the form of fine powder, granules or rods, and is not particularly limited. Is preferably 200 μm or less, particularly preferably 100 μm or less.

The adhesive layer 6 for bonding the two glass sheets 4, 4 'and the spacer 1 of the present invention, which constitute the double-glazed glass of the present invention, is a resin-based or rubber-based adhesive such as butyl, The spacer 1 of the present invention may be applied to the entire surface in contact with the glass using a low-humidity member such as an epion or a reactive hot melt. If strength is required, the spacer 1 of the present invention may be applied to the end face of the glass. The polysulfide-based or silicone-based adhesive may be applied only to the portion in contact with.

The material of the spacer 1 of the present invention is a rigid member, and it is preferable that the spacer 1 can be bent at a right angle by applying a bending force. For example, a metal or a hard resin can be used, but a metal is preferable because bending can be easily performed.

As the metal, iron, aluminum, tungsten, nickel, chromium, titanium, carbon steel, chromium steel, nickel steel, stainless steel, nickel chrome steel, manganese steel, chromium manganese steel, chromium molybdenum steel, silicon steel, brass , Nichrome, duralumin, etc., but it is preferable to use stainless steel from the viewpoint of resistance to rust, price, strength and workability.

If it can be bent at a right angle, a hard resin (including a hard elastomer and a hard rubber) such as polyethylene, polypropylene, acrylic, polystyrene, polycarbonate, polyvinyl chloride, AB
S-based, polyester-based resin such as polyethylene terephthalate, epoxy-based, unsaturated polyester-based hard resin,
Polyurethane, silicone or other hard elastomer,
Natural rubber, hard rubber such as styrene-butadiene rubber, and various fillers as necessary, such as natural mica such as muscovite and phlogopite, synthetic mica, graphite, glass flake, ferrite, clay, talc, Flake fillers such as leech, smectite, magnesium silicate, stainless steel flake, aluminum flake, nickel flake, calcium carbonate, magnesium carbonate, silica, alumina, iron oxide, boron nitride, reinforcing silica, silica sand, sericite, The spacer 1 of the present invention is a composite material obtained by mixing a particulate filler such as calcium silicate, titanium oxide, kiln ash, glass beads, carbon black, and white carbon, and a fibrous filler such as glass fiber, carbon fiber, and aramid fiber. Can be used as material of

Further, the spacer 1 of the present invention, which is made of a rigid member having the adhesive layer 6, exhibits an appropriate rigidity and bonding strength after bonding, so that the double-layer glass can be used in a high-temperature atmosphere such as in summer. Even when stored underneath, plate slippage can be suppressed, and even in a case where there is no eaves and the aluminum sash is at a temperature of 60 ° C. or more due to strong direct solar radiation such as in summer, Plastic deformation due to expansion of the internal space can be suppressed.

Next, the method for producing the double-glazed glass of the present invention will be described.

As shown in the side view of the spacer of FIG.
The spacer 1 of the present invention is bent to form a spacer frame of a predetermined size, and as shown in the cross-sectional view of the main part of the double-glazing using the spacer 1 of the present invention in FIG. The drying material 5 is filled between the rectangular plate rows 2. Next, an adhesive or an adhesive tape is applied or stuck to the outside of the plate row 2, that is, the portion where the glass plates 4, 4 'and the spacer 1 of the present invention are in contact with each other by a manual, semi-automatic or fully automatic mechanical method. After that, one glass is bonded so that it fits into the spacer frame, and then
The other glass plate is bonded so as to fit into the spacer frame, and is bonded and integrated with the two glass plates 4 and 4 ′ to obtain a double-glazed glass.

FIG. 4 is a perspective view showing an example of the spacer 1 of the present invention having a slightly different shape from that shown in FIG. 1. As shown in FIG. If the spacer is manufactured so as not to have a contact portion, it can be used in place of the conventional dual seal type cylindrical aluminum spacer, and since the spacer 1 is bendable, the spacer is cut to a predetermined length, and the corner is cut. Complex work such as connection with a connection joint is eliminated, and man-hours can be saved. FIG. 5 shows a cross-sectional view of a main part of the double-glazing at that time. However, as described above, in the conventional dual-seal method, the liquid secondary sealing material 8 is filled in the depressions at the end portions of the double-layer glass. Shortage of liquid and dripping of liquid in the linear portion occur. There is a problem that the workability is reduced due to the repair, and the yield is reduced due to the stain on the glass plate. Therefore, without using a liquid polysulfide-based, silicone-based, or polyurethane-based resin as the secondary sealing material 8,
A resin-based or rubber-based adhesive, for example, a low-humidity member such as butyl, epion, or reactive hot melt may be applied to the three surfaces of the spacer 1 except for the upper open portion. By using the resin-based or rubber-based adhesive as a sealing agent without using a liquid sealing agent, using the spacer 1 of the present invention shown in FIG.
The double glazing whose main section is shown in FIG. 6 can be obtained by a simple manufacturing process. Spacer 1 and two glass plates 4,
It is preferable to apply the resin-based or rubber-based adhesive to the depressions made of 4 ′, because the application of the resin-based or rubber-based adhesive suppresses moisture permeation and increases the reliability of the sealing.

On the other hand, the double-glazed glass obtained in this manner is introduced into a heating furnace as required, or only the spacer 1 is heated to form a double-glazed glass plate 4, 4 '. A double-glazed glass can also be obtained by firmly bonding and integrating. The heat treatment can be performed at a temperature of 200 ° C. or lower, preferably 170 ° C. or lower.

In order to more firmly bond and integrate the double-glazed glass in the heating step, the whole of the double-glazed glass is reduced to a very small pressure before the introduction into the heating step. Pressurized, and heat it while pressurized, or press the entire double-glazed glass by passing between multiple rolls that are adjusted so that the gap between the rolls is gradually narrowed slightly. It is good to heat it while passing. As a method for bonding the spacer 1, other methods such as ultraviolet irradiation and electron beam irradiation may be used other than the heat treatment.

Further, by applying a tape over a part or the entire periphery of the peripheral edge of the double-layer glass, the glass 4,
4 ′ can be protected, and depending on the material of the tape, the slippage of the plate during storage can be suppressed. As this tape, besides general vinyl resin tape, polypropylene resin, polyester resin, fluorine resin,
Various films such as plastic films of silicone resin, etc., metal foils such as aluminum foil and stainless steel foil and laminated films obtained by laminating them, plastic films on which metals such as aluminum are deposited, and soft metal sheets such as lead and zinc. A tape in which an adhesive is applied to one side of the sheet can be used.

Further, a glazing channel made of resin can be provided over almost the entire peripheral edge of the double-glazed glass.

In addition to air, argon gas, krypton gas, xenon gas, helium gas, sulfur hexafluoride gas and the like are used as the gas sealed in the inner space 7 of the double-glazed glass in order to further improve the heat insulation performance and the sound insulation performance. Can be used.

Further, a decorative film, a conductive film or metal mesh for electromagnetic shielding, a visibility control film,
A functional film such as a resin film coated with a special metal film or a mesh or a mesh may be attached, or may be stretched and attached to the internal space 7. In the case where the inner space 7 is stretched and pasted, a hole for communicating the isolated inner space 7 with a corner of a functional film or mesh can be provided as necessary.

Further, various blinds or various metal or resin lattices can be built in the internal space 7.

Hereinafter, the present invention will be described specifically with reference to examples. However, the present invention is not limited to the embodiment.

[0062]

EXAMPLE An example of the double glazing according to the present invention will be described with reference to the cross-sectional view of the main part of the end portion of the double glazing shown in FIG.

The two glass plates 4 and 4 ′ are float glass plates having a thickness of 3 mm and a size of 350 mm × 500 mm, and one glass plate 4 ′ is a low radiation plate glass having a special metal film coated on the inner space side, and has a vertical emissivity. Is 0.07
It is.

The spacer 1 used is made of SUS304, and a plurality of rectangular plate rows 2 which are spacing members have a height of 7 mm and a width of 12 mm. The interval of the internal space 7 is 5.
5 mm. (The spacer is cut into a long plate made of SUS304 having a width of 19.5 mm and wound in a roll shape at a predetermined length and at an interval, and then bent so that the C-shape is continuous. It was produced by arranging it at the center of a long plate having a width of 12 mm and welding it at regular intervals by electric welding.) Then, between two rows of rectangular plate rows 2 serving as a spacer for spacer 1 , A silicone sealant containing 70% by weight of fine powder zeolite 3A as a desiccant was continuously filled as a desiccant 5. The obtained spacer 1 was cut into a predetermined length and bent so as to form a spacer frame. Then, at the last corner, the spacer was overlapped and firmly fixed with an epoxy adhesive. A butyl rubber-based hot melt butyl was applied to the outside of the spacing member 2 as the adhesive 6, and the hot melt butyl was also applied to the surfaces of the glass plates 4, 4 ′ in contact with the end surfaces. In this way, hot melt butyl was applied to all surfaces of the spacer in contact with both glass plates 4, 4 '. Next, the glass plate 4 is fitted into the spacer frame, and further, the glass plate 4 ′ is fitted into the spacer frame, and then the glass 4, 4 ′ and the spacer 1 are firmly pressed by applying pressure while heating the peripheral edge. Was adhered to.

The obtained 350 mm × 50 mm
JIS R 3
When the initial heat transmission coefficient was measured by the method specified in 209-1998 and the method in accordance with JIS A 4710-1996, the initial dew point was -70 ° C, which cleared the JIS standard (-35 ° C or less). The initial heat transmission coefficient is 2.5 W / m ² K, and the heat insulation performance is high.
After the JIS accelerated durability test class III specified in 3209-1998, the dew point became -70 ° C or less and the JIS standard (-
(30 ° C or less), the heat transmission coefficient is 2.5 W / m ² K, and the heat insulation performance is high. In addition, the dew point performance and the heat transmission coefficient have sufficient durability even after the test under severe conditions. It was confirmed.

[0066]

According to the present invention, by using the spacer of the present invention having a bendable shape without changing the shape of the glass holding portion in the production of a multi-layer glass, the corner portion can be simply bent by the spacer, and the conventional dual sealing method can be used. It is time-consuming, such as cutting the spacer to a predetermined length according to the dimensions of the glass, connecting the spacer at the corner of the spacer with a corner connection joint, preventing moisture permeability at the corner, etc. Since there is no need to perform complicated operations and the number of steps can be reduced, productivity can be improved and a double-glazed glass can be obtained at low cost. Since the position of bending of the spacer of the present invention can be freely determined, it is possible to cope with a double glazing having a different size without changing the processing of the spacer.

Further, the obtained double-glazed glass has a unique shape in which the spacer of the present invention holds two opposing glass plate edges forming the double-glazed glass.
At the time of manufacturing, not only is it easy to position the glass plate, but the bonding area with the glass plate can be large and the adhesive layer can be thick, that is,
It has high sealing reliability and is hardly sheared.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of the shape of a spacer according to the present invention.

FIG. 2 is a side view of the spacer for explaining the bending process of the spacer of the present invention.

FIG. 3 is a sectional view of a main part of an example of a double glazing using the spacer of the present invention.

FIG. 4 is a perspective view showing an example of the shape of the spacer of the present invention.

FIG. 5 is a sectional view of a main part of an example of a double glazing using the spacer of the present invention.

FIG. 6 is a cross-sectional view of a main part of an example of a double glazing using the spacer of the present invention.

FIG. 7 is a sectional view of a main part of a conventional dual-sealed double-glazing unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spacer 2 Plural rectangular board row 3 Long board 4, 4 'glass board 5 Drying material 6 Adhesive material 7 Internal space 8 Secondary sealing material

Claims (7)

[Claims] 1. A U-shaped spacer for use in a double glazing having a sealed internal space provided with a spacer for maintaining the interval at a peripheral edge of two glass plates separated at a predetermined interval. The side wall of the groove-shaped member is formed by continuously erected a plurality of rectangular plates at a predetermined angle. 2. A spacer for use in a double glazing having a sealed internal space, wherein a spacer for maintaining the interval is provided at a peripheral edge of two glass plates separated at a predetermined interval. A U-shaped groove-shaped member is fixed to the plate, and a side wall of the U-shaped groove-shaped member is formed by continuously standing a plurality of rectangular plates at a predetermined angle. Spacer. 3. A double glazing comprising the spacer according to claim 1 and a peripheral edge of the two glass plates constituting the double glazing facing the opposite surface. . 4. A multilayer according to claim 3, wherein a desiccant is arranged between the U-shaped groove-shaped members by using the spacer according to claim 1 or 2. Glass. 5. The double-glazed glass according to claim 3, wherein the spacer according to claim 1 or 2 is provided over the entire periphery of the peripheral edge of the double-glazed glass. . 6. A U-shaped groove-shaped member formed by making a notch of a predetermined length on both sides of a long plate made of stainless steel wound on a roll and bending the plate. 3. The method for producing a spacer according to item 1. 7. A stainless steel long plate wound on a roll is provided with cuts of a predetermined length on both sides, and a U-shaped groove formed by bending is inserted into another stainless steel plate. The method for producing a spacer according to claim 2, wherein the long plate is welded or bonded.