JPH11100240A - Double layered glass and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide double layered glass with which the simplification of production stages, the easy attainment of high sealing reliability and the reduction of a production cost are possible and a process for producing the same. SOLUTION: The spacer 4 of the double layered glass 1 consists of at least two layers; a first spacer 5 consisting of a cord-like resin layer 7 which is packed with a desiccating agent and has self-tacky adhesiveness and a second spacer 6 consisting of a cord-like curable resin layer. The first spacer is disposed on the inner side and the second spacer on the outer side. This process for production consists in sticking the first deformable spacer and deformable second spacer obtd. by respective molding the first spacer and the second spacer in an uncured or half-cured state to cord forms, respectively, to the peripheral marginal end of one sheet glass 3 or on the side slightly inner than this end with the first spacer positioned on the inner side, then sticking another sheet glass 3 thereon and adhering and integrating both sheet glass by press bonding, then curing the second spacer in the uncured or half-cured state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-glazed glass having a heat insulating property, and is used for a construction field such as a house and a non-house, an automobile,
It is applied to openings that require energy saving, such as in the transportation field of vehicles, ships, aircraft, etc., and in the field of equipment such as freezers, freezer showcases, and temperature and humidity chambers.

[0002]

2. Description of the Related Art In recent years, in order to create a comfortable and healthy living environment with excellent energy saving, double glazing having heat insulation performance has been used more frequently than ever before and has been rapidly spreading.
Various types are used and proposed as this double-glazed glass.

[0003] For example, as a spacer for a double-glazed glass, there is known a hollow cylindrical body made of aluminum filled with a desiccant as disclosed in JP-A-59-45149. This cylindrical aluminum spacer is cut into a predetermined size in advance, and after filling a hollow portion with a desiccant, each end is joined using a corner connection key to be assembled into a frame, or to a predetermined shape. After being bent and joined to the frame by joining the ends using a connection key, the hollow portion is filled with a desiccant. Next, a butyl rubber-based sealing material was applied as a primary sealing material to two surfaces of the cylindrical aluminum spacer frame bonded to the glass, and this was affixed slightly inside the peripheral edge of one of the plate glasses. After that, the other glass is pasted on it, pressed and bonded, and integrated with each other to form a hollow space with the two glass sheets and the spacer. Then, the outer cross section is formed into an open concave space having a substantially U-shaped cross section. 2
The so-called dual-seal double-layer glass, which is coated and filled with liquid polysulfide-based, silicone-based, and polyurethane-based resin as the next sealing material, is cured at around room temperature, and is firmly bonded and integrated with the plate glass,
The most common one.

For example, Japanese Patent Publication No. Sho 63-50508 and Japanese Patent Application Laid-Open No. Hei 6-123191 disclose a continuous rigid spacer, for example, a corrugated aluminum plate, in a self-adhesive resin layer filled with a desiccant. After affixing a string-like material with embedded etc. slightly inside the peripheral edge of one sheet glass, the other sheet glass is stuck on it and pressure bonded, integrated with adhesive, two sheets of glass and a spacer A so-called single-seal double-layer glass in which a sealed hollow space is formed is described, and some of the double-layer glasses are currently used.

For example, Japanese Patent Application Laid-Open No. 7-291677 discloses that
Addition-reaction-type bonding in which a bonding member is adhered around the periphery of a glass plate in a multi-layer glass in which a plurality of glass plates are polymerized and integrated by a bonding member with a gas layer interposed between parallel glass plates It is made of an elastic body provided with layers on both sides, and is pressed against the addition reaction type adhesive layer and glass with a reaction catalyst layer interposed,
The addition reaction type adhesive layer and the curing reaction are integrated,
The joining member is provided with a concave groove, and the outer peripheral surface of the joining member is covered with a foil-like gas barrier material such as a metal foil including the concave groove by joining or drawing, and the concave groove is filled with a hygroscopic agent and provided. A double-glazed glass characterized in that the penetration of water molecules is prevented by bonding a glass plate with a foil-like gas barrier material such as a metal foil using a low-melting metal.

For example, Japanese Patent Application Laid-Open No. 9-77536 discloses that
Two or more glass plates are opposed to each other via a resin spacer so as to form a hollow layer, and a concave portion is formed between the peripheral portion of the glass plate and the outer peripheral portion of the spacer, and the concave portion is filled with a sealing material. In the double glazing, a double glazing characterized in that the sealing material shows fluidity at a temperature of 60 ° C. or more and a thermoplastic resin having a JISA hardness of 25 or more and less than 70 at 25 ° C. I have.

For example, Japanese Patent Application Laid-Open No. 4-250285 discloses that
In a double glazing in which a sealed hollow space is formed by arranging two sheet glasses at a predetermined interval and arranging a spacer for maintaining the interval at a peripheral edge of the panel, the spacer has a cross section. The opening of a U-shaped rigid isolating member made of a metal such as stainless steel 304 or made of glass fiber reinforced plastic coated with a gas and moisture impermeable film faces the hollow space side, and has a central bottom portion. Filled with desiccant inside, for example, polyurethane,
A moisture permeable resin layer such as silicone is applied and arranged, and as a primary sealing material on an outer portion to be adhesively bonded to glass,
For example, a moisture-impermeable adhesive type sealing material such as polyisobutylene is applied, and this is attached to the inside of the peripheral edge of one of the sheet glasses, and then the other glass is attached thereon. Compression bonding, adhesion and integration, forming a hollow space with two sheets of glass and spacers, and then as a secondary sealing material in the open concave space with a substantially U-shaped outer cross section, as a structural adhesive type sealing A so-called dual-seal double-glazing system provided with a material is described. Practically, as a structural adhesive type sealing material, for example, a liquid polysulfide-based, silicone-based, or polyurethane-based resin is applied and filled, and cured at a temperature around room temperature, and at the same time, is firmly bonded and integrated with a sheet glass.

[0008]

However, the double glazing using a cylindrical aluminum spacer described in, for example, Japanese Patent Application Laid-Open No. 59-45149, described above, requires a cylindrical aluminum spacer having a predetermined size. Cut into a hollow part, filled with a desiccant, and joined at each end using a corner connection key to be assembled into a frame, or bent into a predetermined shape, and the end is used with a connection key. After joining and assembling into a frame, the hollow portion is filled with a desiccant. Next, a butyl rubber-based sealing material was applied as a primary sealing material to two surfaces of the cylindrical aluminum spacer frame bonded to the glass, and this was affixed slightly inside the peripheral edge of one of the plate glasses. After that, the other glass sheet is adhered and pressed and adhered and integrated with the glass sheet, and further, into an open concave space having a substantially U-shaped cross section on the outside formed by two glass sheets and a cylindrical aluminum spacer. Liquid polysulfide as the next sealing material,
A silicone-based or polyurethane-based resin is applied and filled, cured at a temperature around room temperature, and firmly adhered and integrated with the glass sheet. The production process is complicated, and the production cost is high.

Further, since the secondary sealing material is liquid, if the control and adjustment of the coating process are poor, a shortage of liquid at corners or a dripping of liquid at straight portions will occur, thereby reducing workability. In addition, there is a problem that the product yield is reduced, for example, the plate glass becomes dirty. In addition, the entire production line may stop.

Further, since a cylindrical aluminum spacer filled with a desiccant has a high rigidity, it is usually necessary to produce a double-layer glass for a two-dimensional or three-dimensional curved glass except for a case where the radius of curvature is large. Very difficult or practically impossible.

Further, since the cylindrical aluminum spacer filled with a desiccant has high rigidity, the hollow space side has been subjected to unevenness processing. For example, plate glass such as template glass, fusion glass, printed glass, stained glass, etc. To make, except when the unevenness is very small,
Usually very difficult or practically impossible.

For example, the double-glazing described in JP-B-63-50508 and JP-A-6-123191 comprises a continuous rigid spacer in a self-adhesive resin layer filled with a desiccant. For example, since a string-like material in which a corrugated aluminum plate or the like is embedded is merely disposed at the peripheral edge of the sheet glass or slightly inside thereof, the manufacturing process is simplified and the manufacturing cost is relatively low. The adhesive strength between the self-adhesive resin layer filled with a desiccant and the sheet glass is significantly reduced when stored in a high-temperature atmosphere such as, for example, in summer. There is a problem that shear deformation is likely to occur beforehand, and in order to prevent this shear deformation, an open concave space formed by two sheet glasses and a spacer and having an approximately U-shaped outer cross section. A liquid polysulfide-based, silicone-based, or polyurethane-based resin is applied and filled as a secondary sealing material in the same manner as when a cylindrical aluminum spacer is used. In some cases, they may be integrated, but in this case, there is a problem that the manufacturing cost is higher than that of the cylindrical aluminum spacer type.

In addition, when a liquid material is applied and filled as a secondary sealing material, if the control and adjustment of the application process are poor, a shortage of liquid in a corner portion or a dripping in a straight line portion occurs, which leads to an increase in workability. In addition, there is a problem that the product yield is lowered, for example, the plate glass becomes dirty. In addition, the entire production line may stop.

For example, in the case of the double-glazed glass described in Japanese Patent Application Laid-Open No. 7-291677, the reaction catalyst layer is separated from the release / carrier sheet and transferred to the bonding-facing surface of the glass plate, and the elastic body as a bonding member The adhesive layer is pressed into contact with the additional reaction type adhesive layer provided on both sides to integrate the curing reaction.The reaction catalyst layer as the curing agent and the additional reaction type adhesive layer as the main agent are separated, so the reaction catalyst layer is The process of releasing and transferring from the carrier sheet to each of the two glass plates is complicated, and the outer peripheral surface of the joining member is covered with a foil-like gas barrier material such as a metal foil, including a concave groove. Alternatively, the process of drawing is also complicated, and a process of applying a low-melting metal layer to the glass contact surface of a foil-like gas barrier material such as a metal foil, and then melting and heating after the assembly setting to integrate and bond. Also A miscellaneous.

Further, for example, the double-glazing described in Japanese Patent Application Laid-Open No. 9-77536 is arranged such that two or more glass plates are opposed to each other via a resin spacer so as to form a hollow layer, and the periphery of the glass plates is formed. In a double-layer glass in which a concave portion is formed between the portion and the outer peripheral portion of the spacer and the concave portion is filled with a sealing material, the sealing material exhibits fluidity at a temperature of 60 ° C. or more, and has a JISA hardness of 25 at 25 ° C. More than 70
Less than thermoplastic resin, the process of heating and melting the thermoplastic resin to show fluidity and filling the recesses using an extruder etc. Since the equipment is what is needed,
There is a problem that the initial capital investment is large. In addition, for example, there is a case where the aluminum sash has a temperature of 60 ° C. or higher without eaves due to strong direct solar radiation such as in summer, and plastic deformation due to expansion of the hollow space in the aluminum sash is likely to occur. There is.

For example, in the double glazing described in Japanese Patent Application Laid-Open No. 4-250285, the spacer is such that the opening of the rigid isolation member having a U-shaped cross section faces the hollow space side and the spacer is dried inside the center bottom. Coating and disposing a moisture permeable resin layer filled with an agent,
A moisture-impermeable adhesive-type sealing material is applied as a primary sealing material to an outer portion that adheres to glass, and a hollow space is formed by two sheet glasses and spacers.
Thereafter, a structural adhesive-type sealing material is provided as a secondary sealing material in an open concave space whose outer cross section is substantially U-shaped. However, in practice, liquid polysulfide-based, silicone-based, and polyurethane-based resins are used. Is applied and filled, and is hardened at a temperature around room temperature and at the same time is firmly bonded and integrated with the plate glass. Since the secondary sealing material is in a liquid state,
If the control and adjustment of the coating process are poor, there is a problem that a shortage of liquid occurs in the corner portion and a dripping occurs in the straight line portion, thereby lowering workability and lowering the product yield such as contamination of the glass sheet. In addition, the entire production line may stop.

Further, since the spacer, which is a rigid isolating member having a U-shaped cross section, has high rigidity, manufacturing a two-dimensional or three-dimensional curved glass with a double-layer glass is effective except for a case where the radius of curvature is large. Usually very difficult or practically impossible.

Further, since the spacer, which is a rigid isolating member having a U-shaped cross section, has high rigidity, irregularities are formed on the hollow space side. For example, a sheet glass such as a template glass, a fusion glass, a printing glass, and a stained glass is used. Making a laminated glass is usually very difficult or practically impossible, except when the irregularities are very small.

The present invention has been made in view of the above-mentioned conventional problems, and the first spacer and the second spacer can be sequentially arranged in a continuous or simultaneous step. It is an object of the present invention to provide a double-glazed glass that can be simplified, can easily achieve high sealing reliability, and can also reduce the manufacturing cost, and a method for manufacturing the same.

[0020]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method in which two glass sheets are spaced at a predetermined distance, and a spacer for maintaining the distance is provided at a peripheral edge of the panel. In the double-glazed glass in which a sealed hollow space is formed by disposing the spacer, the spacer includes at least two layers of a first spacer and a second spacer, and the first spacer is filled with a desiccant. The second spacer is formed of a string-shaped curable resin layer having a self-adhesive property, and the first spacer is formed of a string-shaped curable resin layer.
Each of the spacers is arranged with the spacers on the inside and the second spacers on the outside.

As a method for producing the same, the spacer comprises at least two layers of a first spacer and a second spacer, and a self-adhesive string-like resin layer filled with a desiccant as the first spacer. Is attached to the peripheral edge of one of the sheet glass or slightly inside thereof, with the unreacted or semi-cured string-shaped curable resin layer serving as the second spacer as the second spacer. After that, the other glass sheet is stuck thereon and pressure-bonded, and then adhesively integrated. Then, by hardening the second spacer in an uncured or semi-cured state, it is simultaneously strongly bonded and integrated with the glass sheet. In addition, the first spacer and the second spacer are preliminarily bonded to each other to form a string, and the spacer is partially self-adhesive. And more preferable.

Here, it is a feature of the present invention that both the first spacer and the second spacer can be handled as strings. At least first
The spacer composed of the spacer and the second spacer simultaneously satisfies both functions as an interval holding material for holding two glass sheets at a predetermined interval and a sealing material for sealing a hollow space.

The first spacer and the second spacer are:
A quasi-single-seal system, which is equivalent to a dual-seal system, is arranged continuously and sequentially as separate spacers, or is arranged and bonded together as a single united spacer. Since the sealing can be performed by a method which can be said to be a method which can be said, the manufacturing process can be simplified, and high sealing reliability can be easily achieved, so that the manufacturing cost can be reduced.

Also, instead of applying a liquid curable resin in which the secondary sealing material has a high viscosity as in the prior art but cannot be handled as a string-like material, it is not cured as a second spacer. Alternatively, since it is only necessary to arrange a curable resin layer formed in a string shape in a semi-cured state,
There is no problem of poor workability due to lack of liquid at the corners, dripping of liquid at the straight part, or reduction in product yield due to contamination of plate glass, etc., which is caused by poor control of the coating process. The whole line never stops.

The secondary sealing material is applied with a liquid curable resin as in the prior art, or a thermoplastic resin is heated and melted to show fluidity, and filled using an extruder or the like. Rather, since only the curable resin layer formed in the form of a string in the uncured or semi-cured state as the second spacer is simply provided, a precise control device for quantitative supply without excess or shortage is required. It is not necessary, and the amount of initial capital investment can be kept small.

Further, the second spacer in an uncured or semi-cured state is not one in which the main agent and the curing agent are separated, but can be a one-component type in which the main agent and the curing agent are mixed in advance. Can be omitted separately for separately applying and transferring.

Further, since the second spacer in an uncured or semi-cured state can be hardened and firmly bonded and integrated with the plate glass at the same time, it can be stored especially in a high temperature atmosphere such as in summer. In addition, when the aluminum sash has a temperature of 60 ° C. or more due to strong direct solar radiation such as in summer, there is no eaves, the hollow inside the aluminum sash can be used. There is no problem that plastic deformation occurs due to expansion of the space.

Further, the first spacer and the second spacer in an uncured or semi-cured state are compared with a conventional aluminum spacer filled with a desiccant and a spacer which is a rigid isolation member having a U-shaped cross section. Are easily deformable, so that a two-dimensional or three-dimensional curved glass can be easily produced as a double-layer glass, and the allowable range of the radius of curvature is wide.

Further, the first spacer and the second spacer in an uncured or semi-cured state are compared with a conventional aluminum spacer filled with a desiccant and a spacer which is a rigid isolation member having a U-shaped cross section. Can easily be deformed, so that the hollow glass side can be easily made into a double-glazed glass such as template glass, fusion glass, printed glass, stained glass, etc. The range to be done is wide.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Two sheets of glass are clear float glass, heat-absorbing glass, heat-reflecting glass, high-performance heat-reflecting glass, wire-in glass, net-in glass, template glass, tempered glass, and 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, low Various types of sheet glass such as expanded sheet glass (including borosilicate glass) and low melting point sheet glass can be appropriately combined. At least one of these sheets is a low-radiation sheet glass coated with a special metal film, or a special metal film is coated. Pasted resin film It is preferable to employ a radiation plate glass.

More preferably, the low emissivity glass sheet has a vertical emissivity of 0.20 or less, preferably 0.2 mm or less according to JIS R 3106-1985 (Testing method for transmittance, reflectance and solar heat gain of the glass sheet). 10 or less glass or one with a vertical emissivity of 0.35
The following two, preferably 0.25 or less glasses are used.

The thickness of the two glass sheets is usually 1.
A glass having a thickness of 9 mm or more is used. In the case of a tempered glass, particularly in the case of chemically strengthened glass, the thickness is not limited thereto, and a glass having a size of 1.9 mm or less can be used.

Further, the first spacer and the second spacer in an uncured or semi-cured state are compared with the prior art cylindrical aluminum spacer filled with a desiccant and the spacer which is a rigid isolation member having a U-shaped cross section. Are easily deformable, so that a two-dimensional or three-dimensional curved glass can be easily produced as a double-layer glass, and the allowable range of the radius of curvature is wide.

Further, the first spacer and the second spacer in an uncured or semi-cured state are compared with the prior art cylindrical aluminum spacer filled with a desiccant and the spacer which is a rigid isolation member having a U-shaped cross section. Can easily be deformed, so that the hollow glass side can be easily made into a double-glazed glass such as template glass, fusion glass, printed glass, stained glass, etc. The range to be done is wide.

In the embodiment, two sheets of glass are used. However, three or more sheets of glass may be combined at intervals. Further, other than the inorganic glass, a resin glass such as an acrylic plate and a polycarbonate plate may be used, and is not particularly limited.

The distance between the two glass sheets is at least 0.2 mm, preferably at least 2 mm. Even when three or more sheets of glass are used in combination,
Similarly, it is at least 0.2 mm, preferably at least 2 mm.

The first spacer is formed of a self-adhesive string-like resin layer filled with a desiccant, and has a sufficient moisture absorbing property to absorb moisture in the hollow space, thereby lowering the initial dew point. In addition, by having sufficient moisture absorption performance to adsorb moisture entering from the outside and moisture impermeability that does not allow moisture to permeate into the hollow space, the durability of dew point performance is excellent. It can be caused by moisture released from the resin layer composition itself, low molecular weight plasticizers, etc., internal condensation observed visually in the hollow space, or clouding called so-called fogging There are no problems such as defects, and the resin layer composition itself can be formed into a string shape, and the one formed into a string shape can be handled as a spacer, Scan it is intended deformable so as to conform to the shape of, and those having a plasticity that can retain substantially intact form even when bent at the corner portion.

In the first spacer, self-adhesive resins (including rubber and elastomer) include polyisobutylene (including reactive polyisobutylene), butyl rubber (including unvulcanized butyl rubber and partially vulcanized butyl rubber), A copolymer containing polyisobutylene as one component, hot melt butyl (for example, M-145, M-
120, including commercially available compounds such as Kanebo NSC 88-7500), and, if necessary, an aliphatic hydrocarbon-based resin, an aromatic hydrocarbon-based resin as a tackifier, Self-adhesiveness and flexibility by adding polybutene, polybutadiene, polyisobutylene, etc. as plasticizers such as alicyclic hydrocarbon resins, hydrogenated alicyclic hydrocarbon resins, terpene resins, cumarone resins, rosin derivatives, etc. Is expressed.

In the first spacer, silica gel, sintered silica, activated carbon, activated alumina, anhydrous calcium sulfate, zeolite (3A, 4A, 5
A, 13X) and the like, as an essential component, at least one or more desiccants in an amount of 20 to 60% by weight, preferably 25 to 45%.
%, and the form of the desiccant is in the form of fine powder, granule or rod, and is not particularly limited, but in order to quickly lower the initial dew point, the particle diameter is 200 μm or less, particularly 100 μm or less. Powders are preferred.

As the filler that can be added together with the desiccant, various fillers can be used as needed.
For example, natural mica such as muscovite and phlogopite, synthetic mica,
Graphite, glass flake, ferrite, clay,
Flaky filler such as talc, hillite, smectite, magnesium silicate, stainless flake, aluminum flake, nickel flake, calcium carbonate, magnesium carbonate, silica, alumina, iron oxide, boron nitride, reinforcing silica, silica sand, sericite , Calcium silicate, titanium oxide, kiln ash, glass beads, carbon black, white carbon and other particulate fillers, glass fiber, carbon fiber, aramid fiber and other fibrous fillers can be used, and various fibers are processed For example, a fibrous material such as a cord, a rope, a felt, a nonwoven fabric, a woven fabric, or a knitted fabric obtained by binding fibers can be used as the core material. In addition to the above, if necessary, a flame retardant, an adhesion improver such as a silane-based, titanate-based, or aluminum-based coupling agent, bentonite, organic bentonite, montmorillonite, ultrafine silica powder,
A thixotropy-imparting agent such as ultrafine powder titania and ultrafine powder alumina, and a thickening agent such as methylcellulose, methylcellulose sodium salt, magnesium oxide, and magnesium hydroxide can be appropriately added. These fillers contain 20 to 60 wt%, preferably 25 to 45 wt%, of the total amount of the filler and the desiccant.

The first spacer is made of resin, for example, by using a kneader such as a kneader, particularly preferably a closed type kneader in which undesired gas such as moisture does not enter and exit.
After adding and kneading various compounding compositions such as a tackifier, a desiccant, and other fillers, a cross-section of a string-like one having a substantially rectangular shape is extruded from a die using an extruder or the like, A deformable string-shaped first spacer having self-adhesiveness can be formed.

However, in the case where a fiber processed material such as a string-like material, a rope, a felt, a non-woven fabric, a woven fabric or a knitted fabric obtained by processing various fibers as a filler is used as a core material, a kneading machine is used. After mixing and kneading various compounding compositions such as resins, tackifiers, desiccants, and other fillers (excluding fiber processing materials), the obtained kneaded material is impregnated into the fiber processing material to form a cross section. By forming into a substantially rectangular string shape, a string-like first spacer having self-adhesiveness and having a fiber material as a core material can also be formed.

The string-shaped first spacer is used for producing a multi-layer glass while molding or within a short time after molding, and the originally undesirable amount of moisture adsorbed during the molding is used. However, if the amount is small enough not to cause a problem with the dew point performance of the double-glazed glass, there is no need to take any particular measures for moisture proofing. It is preferable that the storage management is performed after performing a moisture proof treatment such as sealing and packing with a sheet having performance.

In addition, the first spacer formed in a string shape has to be carefully designed so that the adhesive surface is not contaminated. Therefore, when the first spacer is used after a certain period of time has passed after the molding, the adhesive surface is not removed. In order not to be contaminated, for example, polyethylene, polypropylene, polytetrafluoroethylene, a film or sheet such as polyester such as polyethylene terephthalate, more preferably a release substrate such as kraft paper or a film or sheet coated with a silicone release agent. It is preferable that the storage be managed after being brought into close contact.

Next, in the second spacer, as the curable resin (including rubber and elastomer), a curable resin such as a polysulfide type, a silicone type, a polyurethane type, an epoxy type and an unsaturated polyester type, or an epoxy urethane -Based, epoxy-silicone-based, epoxy-polysulfide-based modified, mixed, or interpenetrating polymer networks (IPN: Interpene)
The curable resin contains any curable resin obtained by a technique such as (Trading Polymer Network).

In the second spacer, various fillers can be used, for example, silica gel, sintered silica, activated carbon, activated alumina, anhydrous calcium sulfate, zeolite (3A, 4A, 5A, 13X). Flake filling such as desiccants, natural mica such as muscovite and phlogopite, synthetic mica, graphite, glass flake, ferrite, clay, talc, hillite, smectite, magnesium silicate, stainless flake, aluminum flake, nickel flake Materials, calcium carbonate, magnesium carbonate, silica, alumina, iron oxide, boron nitride, reinforcing silica, silica sand, sericite,
Calcium silicate, titanium oxide, kiln ash, glass beads, carbon black, particulate fillers such as white carbon, glass fibers, carbon fibers, fibrous fillers such as aramid fibers can be used, processed various fibers, For example, a fiber material such as a cord, a rope, a felt, a nonwoven fabric, a woven fabric or a knitted fabric obtained by bundling fibers can be used as a core material.Furthermore, a flame retardant, a silane Improvers, such as iron-based, titanate-based and aluminum-based coupling agents, thixotropy-imparting agents such as bentonite, organic bentonite, montmorillonite, ultrafine silica, ultrafine titania, ultrafine alumina, methylcellulose, and methylcellulose sodium salt , Magnesium oxide, thickeners such as magnesium hydroxide It can be suitably added. These fillers are 0 to 60 wt%, preferably 0 to 50 w
t%.

For the second spacer, for example, after using a kneading machine such as a kneader, various compounding compositions such as a resin, a curing agent, and a filler are charged and kneaded, the extruder is used to form a second spacer. By extruding a cord-like material having a substantially rectangular cross section, for example, a deformable cord-like second spacer in an uncured or semi-cured state can be formed.

However, in the case of using a fiber processed material such as a cord, a rope, a felt, a nonwoven fabric, a woven fabric or a knitted fabric obtained by processing various fibers as a filler, for example, a bundle of fibers, a kneading machine is used. After mixing and kneading various compounding compositions such as resin, hardener, filler (excluding fiber processing material), the obtained kneaded material is impregnated into the fiber processing material, and a string-like cross section with a substantially rectangular cross section is obtained. By forming the second spacer, a string-shaped second spacer in an uncured or semi-cured state using a fiber material as a core material can also be formed.

The uncured or semi-cured second spacer formed in a string shape has to be carefully designed so as not to contaminate the adhesive surface.
If used after a while after molding,
In order not to contaminate the adhesive surface, for example, films such as polyethylene, polypropylene, polytetrafluoroethylene, polyesters such as polyethylene terephthalate and the like, and more preferably mold release properties such as kraft paper and films and sheets coated with a silicone release agent It is preferable that the storage is managed after the substrate is brought into close contact.

The curable resin layer composition constituting the second spacer is prepared by controlling the curing reaction in accordance with the type of the curable resin at room temperature or at a low temperature for an appropriate time, that is, mixing these compositions. Thereafter, until the production of the multi-layer glass, it can be held in an uncured or semi-cured state, and can be formed into a string shape, and what is formed into a string shape can be handled as a spacer, that is, It can be deformed so as to conform to the shape of glass, and has plasticity that can maintain almost the same shape even when bent at corners, and has an appropriate elastic modulus and adhesive strength after curing By exhibiting the effect, even if the double glazing is stored in a high temperature atmosphere, especially in summer, it will not cause shear deformation. Rukoto can be also, due to the strong direct solar radiation, such as the summer, there is no eaves, aluminum sash is 60 ℃
Even in the case where the above temperature is reached, it is possible to eliminate the problem that plastic deformation occurs due to expansion of the hollow space in the aluminum sash.

In order for the curable resin layer composition constituting the second spacer to be maintained in an uncured or semi-cured state, the curing reaction is controlled in accordance with the type of the curable resin.
For example, it is achieved by appropriately selecting a curing agent and a reaction inhibitor and performing pretreatment such as aging if necessary. For example, a one-component type using a latent curing agent method or a self-curing method, etc. And a so-called “B stage” method can be adopted. The term "B stage" as used herein refers to a semi-cured state originally maintained by controlling the curing reaction, but even in a state almost uncured, a chemical thickener or the like is used. It also includes an apparent semi-cured state which is thickened by the addition.

The latent curing agent method is a method in which a heat-reactive curing agent that activates at a certain temperature or more or an ultraviolet curing agent that activates at a certain ultraviolet ray or more is mixed in advance. The curing reaction hardly progresses, or the curing reaction hardly progresses with the amount of ultraviolet light at the ordinary indoor lighting level, but the curing reaction rapidly increases when heated above a certain temperature or irradiated with a certain amount of ultraviolet light or more. It is a method that utilizes a progressing curing agent. On the other hand, the self-curing method is a method that utilizes a curing reaction between terminal groups of the molecule itself.

As the latent curing agent, for example, for epoxy resin, DETA, DEATA, BF3-MEA,
Phthalic anhydride, HHPA, 1,8 DAPM, 4, 4'M
Curing agents such as DA and dicyandiamide, and curing catalysts such as t-butyl peroxybenzoate, benzoyl peroxide, methyl ethone ketone peroxide and cobalt naphthenate are known for unsaturated polyester resins.

For silicone resins (including rubbers and elastomers), condensation type, addition type,
It is classified into radical type, each is classified into one-component type and multi-component type according to the packaging form, and each is classified into room-temperature curing and heat-curing according to curing conditions, and basically belongs to any classification Although the condensed type has by-products and generally has a short pot life (pot life), the additional type has no by-products and has a relatively long pot life and relatively little adjustment. It is easy and the reaction rate can be adjusted by, for example, heating and a reaction inhibitor. That is, the curing rate has a large temperature dependence, and the curing speed is increased as the temperature is increased. Or by using a reaction inhibitor, the curing rate can be freely changed at 100 to 200 ° C., and if their inhibitory action is strengthened, as long as they are stored at low temperature even if they are mixed in a one-component form, Long Since between can be held in an uncured or semi-cured state, easy addition type handling, further addition type ones also of self-adhesive pre-one-component adhesive improving agent is added in the preferred.

That is, those classified as so-called addition-type one-component heat-curable silicone rubber adhesives are preferable. For example, JP-A-05-221688, JP-B-53-13508
And Japanese Patent Publication No. 53-21026 and the like can be used, but the present invention is not limited thereto. The addition type one-component heat-curable silicone rubber adhesive will be described in more detail. The main component is an organopolysiloxane containing an aliphatic unsaturated bond such as a vinyl group, the crosslinking agent is a hydrogen organopolysiloxane, and the curing catalyst. As platinum or a platinum compound, for example, an alcohol-modified complex, a platinum complex such as a methylvinylpolysiloxane complex or a divinyldisiloxane complex is most commonly used, and as a reaction inhibitor, for example, methylvinylcyclotetrasiloxane, acetylene alcohols, Siloxane-modified acetylene alcohols,
As a strength improving material such as hydroperoxide, for example, reinforcing silica, surface-treated reinforcing silica, and vinyl group-containing silicone resin are used. The reinforcing silica and the surface-treated reinforcing silica have a BET specific surface area of 80 m ² / g or more. Those are particularly useful, and siloxane,
Carbon functional silanes such as 3-acryloxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 2- (3, Those having a hydrosilyl group, an oxirane group, or an alkoxysilyl group as an adhesive functional group, including 4-epoxycyclohexyl) ethyltrimethoxysilane, are mainly used, and in addition to these main components, various other fillers described above. Thixotropic agents such as bentonite, organic bentonite, montmorillonite, ultrafine silica powder, ultrafine titania, ultrafine alumina powder, methylcellulose, methylcellulose sodium salt, magnesium oxide, magnesium hydroxide, etc. Thickener is added if necessary.

The hardness of the second spacer is JIS K6
According to the method defined in No. 301, the JISA hardness in an uncured or semi-cured state is less than 20, preferably 15
Less than, the JISA hardness after curing is 20 or more,
It is less than 70, preferably 30 or more and less than 65.

As a method of hardening the second spacer in an uncured or semi-cured state and at the same time firmly bonding and integrating it with the sheet glass, it is necessary to check whether the curable resin composition inherently has self-adhesiveness. Alternatively, in addition to the above-described method of expressing self-adhesiveness by adding an adhesiveness improver in advance, a method of performing a pretreatment with a primer can be employed.

As the filler for the second spacer, among the fillers, natural mica such as muscovite and phlogopite, synthetic mica, graphite, glass flake, ferrite, talc, stainless flake, aluminum flake, nickel flake A flake-like filler such as is particularly preferable, and a composition filled with these suppresses gas permeability of water vapor, argon gas, krypton gas, xenon gas, helium gas, sulfur hexafluoride gas and the like and liquid permeability of water and the like. In addition, the second spacer filled with the flake-shaped filler in which the orientation is controlled almost perpendicularly to the glass surface is more efficient than the second spacer randomly filled with gas permeability such as water vapor and water. It is more preferable because the liquid permeability can be further reduced.
The flake-shaped filler has a flake diameter of 10 to 2000 μm,
The flake thickness is in the range of 1 to 200 μm, the aspect ratio is 5 to 2,000, preferably the flake diameter is 50 to 1000 μm, and the flake thickness is 2 to 100 μm.
m and an aspect ratio of 10 to 500.

As a method for producing a second spacer in which the flake-like filler is filled with the orientation controlled substantially perpendicular to the glass surface, for example, a flake-like filler having a flake diameter of several hundred μm and a flake thickness of When using a thing of several μm, the kneaded material obtained by mixing and kneading various compounding compositions such as a resin, a curing agent, a flaky filler and other fillers using a kneading machine, first, a calender Forming into a film with a thickness of several hundred μm using a molding machine or extruder, or forming into a film slightly thicker than several hundred μm using an extruder, etc. When stretched, shear deformation is applied to the kneaded material at the time of molding, so that the flake-like filler filled in the film-like material can be controlled in orientation substantially parallel to the film surface, By laminating dozens of film-like materials, the flake-like filler is controlled to have a substantially controlled orientation to prepare a string-shaped curable resin layer composition in an uncured or semi-cured state filled with a predetermined thickness. The string-shaped curable resin layer composition in the uncured or semi-cured state can be filled in a direction in which the flake-shaped filler can be filled with the orientation controlled substantially perpendicular to the glass surface. It can be manufactured by disposing it on a glass surface.

The first spacer having a self-adhesive property and the second spacer in an uncured or semi-cured state, which are respectively obtained by forming into a string shape, are successively successively separated as spacers. 1 spacer inside,
With the second spacer on the outside, it is arranged at the peripheral edge of one of the glass sheets or at a predetermined position slightly inside thereof by a manual operation using a positioning and bonding jig, or by a semi-automatic or fully automatic mechanical method. It can be temporarily fixed because the first spacer disposed inside has self-adhesiveness.

As another method having a higher production efficiency, for example, the material is passed through rolls with an appropriate pressing strength to make the first
And the second spacer are stuck together to form a single string-shaped spacer, with the first spacer inward and the second spacer outward, and a predetermined marginal edge of one of the glass sheets or slightly inside thereof. Positioning can be done manually using a positioning and bonding jig, or semi-automatic, or fully automated mechanical method,
Moreover, since the first spacer disposed inside has self-adhesiveness, it can be temporarily fixed, and a structure equivalent to the dual seal method can be sealed by a method that can be called a quasi-single seal method, so that manufacturing can be performed. The process can be simplified.

Thereafter, the other plate glass is attached and pressure-bonded to be integrated with the adhesive. The whole of the double-glazed glass thus obtained is introduced into a heating furnace, or only the uncured or semi-cured second spacer is heated to harden the second spacer and at the same time firmly adhere to the plate glass. To obtain a double-glazed glass. Heat curing is 80 ~
It can be carried out in a temperature range of 200 ° C, preferably in a temperature range of 100 to 150 ° C.

Further, in order to more firmly bond and integrate in the curing step, the whole of the multilayer glass is pressurized at such a pressure that the total thickness of the multilayer glass becomes very small before being introduced into the curing step. While curing while pressurized, or while passing between multiple rolls while pressing the entire multi-layer glass by passing between multiple rolls adjusted so that the roll gap is gradually narrowed only slightly It is good to cure. As a method of curing the second spacer in an uncured or semi-cured state, if it can be cured and firmly bonded and integrated with the sheet glass, other than heat curing, for example, ultraviolet curing, electron beam curing Other methods may be used.

With respect to the first spacer having self-adhesiveness and the second spacer in an uncured or semi-cured state, which are disposed at the peripheral edge of the plate glass or at a predetermined position slightly inside the peripheral edge, the end of the spacer After bonding the ends of the first spacer sufficiently by pressing together, and bonding the ends of the second spacer by pressing in the same manner, for example, introducing the entire double-layer glass into a heating furnace, By hardening the second spacer in a hardened or semi-hardened state and simultaneously firmly bonding and integrating it with the sheet glass, a double glazing is obtained.

However, a gap may remain between the ends of the second spacer in an uncured or semi-cured state if the self-adhesiveness is not sufficient. The gap may be filled with a resin layer composition having the same self-adhesiveness as that of the first spacer disposed on the inner side to further ensure the sealing reliability.

For example, when the entire double-glazed glass is introduced into a heating furnace and the second spacer in an uncured or semi-cured state is cured to be simultaneously strongly and integrally bonded to the plate glass, the air in the hollow space is required. Problems such as image distortion caused by thermal expansion of the layer, or conversely, problems such as image distortion caused by thermal contraction of the air layer in the hollow space when the air temperature in the hollow space drops to around room temperature In order to prevent the occurrence of air bubbles, do not join the ends of the spacers before introducing them into the heating furnace. For example, leave a gap of about 1 mm to 3 mm. After heating and curing, the air temperature in the hollow space drops to around room temperature. At this point, the gap can be filled with a resin layer composition having the same self-adhesiveness as the first spacer disposed on the inner side to ensure the sealing performance.

In this case, for example, when an ultrasonic welder is used, the self-adhesive resin layer composition filled in the gap and the adhesiveness of the sheet glass and the self-adhesive resin layer composition filled in the gap and the end of the spacer are used. Adhesion with the part becomes stronger, and the sealing reliability can be further ensured.

Alternatively, for example, a pipe having an inner diameter of about 1 mm to 3 mm is buried in a portion where the ends of the spacer are joined so that the hollow space communicates with the outside air. When the temperature dropped to around room temperature, the pipe was withdrawn and the first
The sealing performance can be ensured by filling a resin layer composition having the same self-adhesiveness as that of the spacer.
Alternatively, the sealing performance can be ensured by filling the resin layer composition having the same self-adhesiveness as the first spacer disposed inside the hole of the pipe without extracting the pipe. Alternatively, when the pipe is formed of a material having a small gas permeability coefficient, for example, a plastic such as polyethylene, polyethylene terephthalate, or polyvinylidene fluoride, or a plastic on which a metal such as aluminum is deposited, the air temperature in the hollow space is around room temperature. At this point, the sealing performance can be ensured by sealing the pipe by heat sealing or the like.

The self-adhesive resin layer composition to be filled in the gap between the ends of the spacer has been described as being the same as the first spacer disposed inside.
In particular, in order to more reliably fill the gap, it is desirable to have a higher self-adhesiveness. For this reason, it is of course possible to use a filler other than the essential filler without filling or using a filler with a reduced filling rate. .

The self-adhesive resin layer composition which fills the gaps between the ends of the spacers is heated to a temperature of 200 ° C. or less to reduce the viscosity, thereby improving the sealing performance. It can be assured.

Further, it is also possible to attach the second spacer after the two glass sheets are adhered by the first spacer. Further, the spacer is constituted by at least two layers of the first spacer disposed inside and the second spacer disposed outside, because the spacer is located between the two layers or the second spacer. Outside, if necessary, a film having a small gas permeability coefficient, for example, a plastic film such as polyethylene, polyethylene terephthalate, a metal foil such as an aluminum foil and a stainless steel foil and a laminated film obtained by laminating them, or a plastic on which a metal such as aluminum is deposited. A film may be provided.

When the cross-section is rectangular, the thickness of the spacer is almost the same as or slightly larger than the thickness of the hollow space, and the width of the spacer becomes a problem in appearance when the multi-layer glass is fitted into the sash. It can be in the range that does not become. That is, when the spacer is composed of two layers, the first spacer disposed inside and the second spacer disposed outside, the dimensions of the first spacer and the second spacer are as follows. In this case, the thickness is almost the same as or slightly larger than the thickness of the hollow space, and the width is equal to the width of the first spacer and the second spacer.
The total width of the spacers can be in a range that does not cause a problem in appearance when the double-glazed glass is fitted into the sash. More specifically, it depends on the product dimensions of the double-glazed glass, glazing channel, and sash.
Both the width of the spacer and the width of the second spacer are 1.
It is preferably at least 5 mm.

Further, by adhering the tape over a part or the entire periphery of the peripheral edge of the multi-layer glass, the edge of the glass can be protected, and depending on the material of the tape, plate shear deformation can be suppressed. As this tape, besides a general vinyl resin tape, a polyester resin, a fluorine resin, a plastic film such as a silicone resin, an aluminum foil, a metal foil such as a stainless steel foil and a laminated film obtained by laminating them, or A tape in which an adhesive is applied to one surface of various films and sheets such as a plastic film on which a metal such as aluminum is deposited or a soft metal sheet such as lead or zinc can be used.

Further, a glazing channel made of resin can be provided over almost the entire periphery of the peripheral edge of the double-glazed glass. In addition, as a gas sealed in the hollow space of the multi-layer glass, besides air, argon gas, krypton gas,
Xenon gas, helium gas, sulfur hexafluoride gas and the like can be used to further enhance the heat insulation performance and soundproofing performance.

Also, a decorative film, a conductive film or a 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 can be attached, or can be stretched and attached in a hollow space. In the case of stretching and pasting in a hollow space, a hole for communicating a hollow space isolated at a corner of a functional film or a mesh can be provided as necessary.

Further, various blinds or various lattices made of metal or resin can be built in the hollow space.

[0077]

The present invention will be described below in detail with reference to examples. However, the present invention is not limited to the embodiment.

Embodiment 1 An embodiment of the double glazing 1 according to the present invention is shown in FIG. The two glass sheets 2 and 3 are 5 mm thick
The one glass plate 3 is a low-emission glass plate in which a special metal film is coated on the hollow space side, and the vertical emissivity is 0.07.

The spacer 4 has a rectangular cross section with a thickness of 6 mm and a width of 8 mm, and is arranged at the peripheral edge of the sheet glass. The spacer 4 is formed by laminating a first spacer 5 having a thickness of 6 mm and a width of 4 mm and a second spacer 6 having a thickness of 6 mm and a width of 4 mm to form a single string-shaped spacer. Next, the second spacer 6 is disposed outside. The thickness of the hollow space is 6 mm.

The first spacer 5 is a self-adhesive string-like resin layer 7 filled with a desiccant, and is prepared by filling hot melt butyl with 30% by weight of fine powder zeolite 3A having a particle diameter of 100 μm or less. Was kneaded using a closed kneader, and then was 6 mm thick and 4 mm wide using an extruder.
The cross-section of a rectangular cord is extruded and can be deformed so as to conform to the shape of glass, and can maintain almost the same shape even when bent at a corner portion It has sufficient self-adhesiveness that can be temporarily fixed to the peripheral edge of the sheet glass.

On the other hand, the second spacer 6 is a string-shaped curable resin layer 8 which is formed by kneading an uncured one-component heat-curable silicone rubber adhesive using a kneader and then extruding. 6 mm thick and 4 mm wide in cross section, formed into a rectangular string using a machine, prepared in a semi-cured state with an appropriate elastic modulus, and deformed to conform to the shape of glass It is possible, and can maintain almost the same shape even when bent at a corner.

Next, a string-like first spacer 5 filled with a desiccant and having self-adhesiveness and a string-like second spacer 6 in a semi-cured state are pasted together through a roll having a gap of about 8 mm. A single string-shaped spacer 4 having a thickness of 6 mm and a width of 8 mm is formed, and the first spacer 5 is placed inward at a predetermined position on the peripheral edge of one of the glass sheets 2 using a positioning jig. One string-shaped spacer 4 was disposed such that the spacer 6 was located outside.

Since the inner first spacer 5 has self-adhesiveness (partially has self-adhesiveness when viewed as the spacer 4), it can be temporarily fixed.

As a result, the structure corresponding to the dual seal method can be sealed as a quasi-single seal method, so that the manufacturing process can be simplified.

After that, the other glass plate 3 is attached and pressure-bonded to be integrated with the adhesive. The double-glazed glass 1 thus obtained is introduced into a heating furnace (not shown), and is heated at 125 ° C. for 10 minutes to harden the second spacer 6 in a semi-cured state, and at the same time, firmly adhere to the glass sheets 2 and 3. The first spacer 5 having self-adhesiveness and self-adhesiveness is more strongly adhered to and integrated with the plate glasses 2 and 3, whereby the double-glazed glass 1 with the sealing portion bonded more firmly can be obtained. . Further, a polyester tape 14 with an adhesive was stuck over the entire periphery of the peripheral edge surface of the multilayer glass 1.

The thus obtained 350 mm × 50 mm
The initial dew point of the 0 mm size double glazing 1
When the initial heat transfer coefficient was measured by the method specified in 3209-1995 and the method in accordance with JIS A 4710-1989, the initial dew point was -45 ° C, which cleared the JIS standard (-35 ° C or less). The initial heat transmission coefficient is 2.17 kcal / m ² h ° C. and the heat insulation performance is high.
After the S accelerated durability test class III, the dew point was -70 ° C or less and the JIS standard (-30 ° C or less) was cleared, the heat transmission coefficient was 2.17 kcal / m ² h ° C, and the heat insulation performance was high and severe. Even after the test under the conditions, it was confirmed that there was almost no decrease in the dew point performance and the heat transmission coefficient, and that the sample had sufficient durability.

Further, in order to investigate shear deformation in a case where the device is stored in a high temperature atmosphere such as in summer,
A shear deformation test was performed by the method shown in FIG. A double-glazed glass 1 having a size of 350 mm × 500 mm produced in the same manner is tilted with the short side horizontally and the long side at an angle of 80 °, and only one side of the glass 2 is supported and fixed on the support base 12.
The other glass 3 on which is fixed and the spacer 4 of the sealing portion are floated in a free state, and introduced into a heating furnace. After 40 minutes at 40 ° C., the amount of shear deformation of the other glass 3 floating in the free state is measured. When measured with a dial gauge 13 set on the upper side of the other glass 3, it was 0.0 mm, and it was found that shear deformation resistance was excellent. The hardness of the second spacer 6 was measured by a method specified in JIS K 6301. The JIS hardness was 12 before curing and 60 after curing.

Embodiment 2 An embodiment of the double glazing 1 according to the present invention is shown in FIG. The same two sheets of glass 2 and 3 as in Example 1 were used.

The spacer 4 has a rectangular cross section with a thickness of 6 mm and a width of 8 mm, and is arranged at the peripheral edge of the sheet glass. The spacer 4 is formed by laminating a first spacer 5 having a thickness of 6 mm and a width of 4 mm and a second spacer 6 having a thickness of 6 mm and a width of 4 mm to form a single string-shaped spacer. Next, the second spacer 6 is disposed outside. The thickness of the hollow space is 6 mm.

As the first spacer 5, the same spacer as in Example 1 was used. On the other hand, the second spacer 6 is a string-like curable resin layer 8 which is a flake-like filler having a flake diameter of about 270 μm and a flake thickness of an uncured one-component heat-curable silicone rubber adhesive. It is filled with 30% by weight of mica 10 having a thickness of about 10 μm and an aspect ratio of about 27. After kneading using a kneader, the extruder is used to form a 6 mm-thick and 4 mm-wide string into a rectangular string. The orientation of the mica 10 is almost parallel to each surface on all four surfaces in the vicinity of the surface of the cord-like material, but the orientation is random at the center and is random, so that it follows the shape of the glass. It is deformable, and can maintain almost the same shape even when bent at a corner.

Next, in the same manner as in Example 1, the first spacer 5 and the second spacer 6 were bonded to form a single string-shaped spacer 4 having a thickness of 6 mm and a width of 8 mm. At a predetermined position on the peripheral edge of the sheet glass 2
One string-shaped spacer 4 was disposed with the spacer 5 inside and the second spacer 6 outside.

Thereafter, the other sheet glass 3 is attached and pressed by the same method as in Example 1, and the obtained double-glazed glass 1 is heated to harden the second spacer 6 in a semi-hardened state. A multilayer in which the first spacer 5 having self-adhesiveness is firmly adhered to and integrated with the plate glasses 2 and 3 and the sealing portion is more firmly adhered to the plate glass 2 and 3 by being more strongly adhered and integrated. Glass 1 can be obtained. Further, the same tape 14 as in Example 1 was applied over the entire periphery of the peripheral edge surface of the double-glazed glass 1.

The thus obtained 350 mm × 50 mm
When the dew point and the heat transmission coefficient of the double glazing 1 having a size of 0 mm were measured in the same manner as in Example 1, the initial dew point was -45 ° C, which cleared the JIS standard (-35 ° C or less). 2.17 kcal / m ² h ° C, high heat insulation performance, after JIS accelerated durability test class III,
Dew point is -70 ° C or less, JIS standard (-30 ° C or less)
The heat transmission coefficient is 2.17 kcal / m ² h ° C, and the heat insulation performance is high, and even after the test under severe conditions, the dew point performance is almost unchanged, and the heat transmission coefficient does not decrease and has sufficient durability. confirmed.

When a shear deformation test was conducted in the same manner as in Example 1, the amount of shear deformation was 0.0 mm, and it was found that the shear deformation resistance was excellent. Also,
When the hardness of the second spacer 6 was measured by the same method as in Example 1, the JISA hardness was 14 before hardening,
It was 64 after curing.

Embodiment 3 An embodiment of the double glazing 1 of the present invention is shown in FIG. The same two sheets of glass 2 and 3 as in Example 1 were used.

The spacer 4 has a rectangular cross section with a thickness of 6 mm and a width of 8 mm, and is arranged at the peripheral edge of the sheet glass. The spacer 4 is formed by bonding a first spacer 5 having a thickness of 6 mm and a width of 4 mm and a second spacer 6 having a thickness of 6 mm and a width of 4 mm to form a single string-shaped spacer. And the second spacer 6 was disposed outside. The thickness of the hollow space is 6 mm.

As the first spacer 5, the same spacer as in Example 1 was used. On the other hand, the second spacer 6 is a string-shaped curable resin layer 8 in which mica 10 as a flake-like filler is filled in an uncured state of an additional one-component heat-curable silicone rubber adhesive at 30 wt%. However, as a flake-like filler different from Example 2, the flake diameter was about 690 μm.
m, flake thickness is about 10 μm, aspect ratio is about 69
In order to control the orientation of the mica 10, after kneading using a kneader, the width is slightly reduced from 6 mm using an extruder, and the mica 10 is formed into a film having a thickness of about 200 μm. Will be oriented to
21 films obtained by the same method are laminated and lightly pressed, and the orientation of the mica 10 is controlled almost in parallel. The width is 6 mm and the thickness is 4 mm. When this is rotated by 90 °, the orientation direction of the mica 10 is rotated by 90 °.
The cross section of mm is shaped into a rectangular string, which can be deformed so as to conform to the shape of the glass, and can maintain almost the same shape even when bent at the corner. .

Next, the first spacer 5 and the second spacer 6 are bonded to form a single string-shaped spacer 4 having a thickness of 6 mm and a width of 8 mm in the same manner as in the first embodiment. At a predetermined position on the peripheral edge of the sheet glass 2
One string-shaped spacer 4 was disposed with the spacer 5 inside and the second spacer 6 outside.

In this case, the orientation of the mica 10 filled in the second spacer 6 is controlled to be substantially perpendicular to the surface of the glass sheet. Thereafter, in the same manner as in Example 1, the other glass sheet 3 is attached and pressed, and the obtained double-glazed glass 1 is heated to harden the second spacer 6 in a semi-cured state, and at the same time, the glass sheet 2 is cured. The first spacer 5 having a self-adhesive property is strongly adhered to and integrated with the glass sheets 3 and 3, so that the double-glazed glass 1 whose sealing portion is more firmly adhered to the glass sheets 2 and 3 is more strongly adhered and integrated. Obtainable. Further, the same tape 14 as in Example 1 was applied over the entire periphery of the peripheral edge surface of the double-glazed glass 1.

The thus obtained 350 mm × 50
When the dew point and the heat transmission coefficient of the double glazing 1 having a size of 0 mm were measured in the same manner as in Example 1, the initial dew point was -45 ° C, which cleared the JIS standard (-35 ° C or less). 2.17 kcal / m ² h ° C, high heat insulation performance, after JIS accelerated durability test class III,
Dew point is -70 ° C or less, JIS standard (-30 ° C or less)
The heat transmission coefficient is 2.17 kcal / m ² h ° C, and the heat insulation performance is high, and even after the test under severe conditions, the dew point performance is almost unchanged, and the heat transmission coefficient does not decrease and has sufficient durability. confirmed.

Further, when the shear deformation test was performed by the same method as in Example 1, the amount of shear deformation was 0.0 mm, and it was found that the shear deformation resistance was excellent. Also,
When the hardness of the second spacer 6 was measured by the same method as in Example 1, the JISA hardness was 14 before curing and was 64 after curing.

[0102]

Comparative Example 1 A comparative example of the double glazing 1 is shown in FIG. The same two sheets of glass 2 and 3 as in Example 1 were used.

The spacer 4 has a rectangular cross section with a thickness of 6 mm and a width of 8 mm, and is disposed at the peripheral edge of the sheet glass. The spacer 4 does not have the second spacer 6 and the first spacer
Consists of only the spacer 5 of FIG. The thickness of the hollow space is 6 mm.

The first spacer 5 has a continuous rigid member 9 on a self-adhesive string-like resin layer 7 filled with a desiccant.
Is embedded in a hot melt butyl and the particle size is 1
After filling 30 wt% of fine powdered zeolite 3A having a size of 00 μm or less with a closed kneader, kneading is performed using an extruder, and two cords having a thickness of 6 mm and a width of 4 mm and a rectangular cross section are used. It is extruded at the same time, and an aluminum material having a thickness of 0.5 mm and a width of 5.8 mm separately supplied as a continuous rigid member 9 is inserted and buried between the two cord-like members, thereby obtaining a thickness of 6 mm. , A cross section having a width of 8 mm is formed in a rectangular string shape, can be deformed so as to conform to the shape of glass, and can maintain almost the same shape even when bent at a corner portion. It has sufficient self-adhesiveness that can be temporarily fixed to the peripheral edge of the sheet glass.

The first spacer 5 is provided on one of the glass sheets 2.
Was disposed at a predetermined position on the peripheral edge portion using a positioning jig. Thereafter, the other plate glass 3 is attached and pressure-bonded to be integrated with the adhesive.

The double-glazed glass 1 thus obtained is introduced into a heating furnace (not shown) and heated at 80 ° C. for 1 minute so that the double-glazed glass 1 is more strongly adhered and integrated with the plate glasses 2 and 3 to obtain the double-glazed glass 1 Can be.

The 350 mm × 50 thus obtained
When the dew point and the heat transmission coefficient of the double glazing 1 having a size of 0 mm were measured in the same manner as in Example 1, the initial dew point was -45 ° C, which cleared the JIS standard (-35 ° C or less). 2.17 kcal / m ² h ° C, high heat insulation performance, after JIS accelerated durability test class III,
Dew point is -70 ° C or less, JIS standard (-30 ° C or less)
The heat transmission coefficient is 2.17 kcal / m ² h ° C, and the heat insulation performance is high, and even after the test under severe conditions, the dew point performance is almost unchanged, and the heat transmission coefficient does not decrease and has sufficient durability. confirmed.

However, when the shear deformation test was conducted in the same manner as in Example 1, the amount of shear deformation was 2.0 mm or more, and it was found that the shear deformation resistance was extremely inferior to that of the present invention.

[0109]

As described in detail above, according to the present invention,
It has excellent dew point performance and heat insulation performance, and can maintain long-term durability.Even when it is stored in a high-temperature atmosphere such as in summer, it does not suffer from shear deformation. It can be excellent.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a main part of a double glazing 1 according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part showing Example 2 of the double glazing 1 according to the present invention.

FIG. 3 is a cross-sectional view of a principal part showing Example 3 of the double glazing 1 according to the present invention.

FIG. 4 is a cross-sectional view of a principal part showing Comparative Example 1 of the double-glazed glass 1;

FIG. 5 is a side sectional view showing a shear deformation test method for a double-glazed glass.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 double-glazed glass 2 flat glass 3 flat glass (low-emission glass) 4 spacer 5 first spacer 6 second spacer 7 self-adhesive resin layer filled with desiccant 8 curable resin layer 9 rigid member 10 flake-shaped filling Material mica 11 Weight 12 Support base 13 Dial gauge 14 Adhesive tape

Claims (8)

[Claims] 1. A double-layer glass having a sealed hollow space formed by arranging two sheet glasses at a predetermined interval and arranging a spacer for maintaining the interval at a peripheral edge of the panel. Wherein the spacer comprises at least two layers of a first spacer and a second spacer,
The first spacer is formed of a string-like resin layer having self-adhesiveness filled with a desiccant, and the second spacer is formed of a string-shaped curable resin layer. A double-layer glass wherein the second spacers are disposed outside and the respective spacers are disposed. 2. The method according to claim 1, wherein the second spacer is a curable resin such as polysulfide, silicone, polyurethane, epoxy or unsaturated polyester, or a modified resin such as epoxy urethane, epoxy silicone or epoxy polysulfide. Alternatively, a mixed or interpenetrating polymer network (IPN: Interpenetrat)
2. The double-glazed glass according to claim 1, wherein the double-glazed glass contains any one of curable resins obtained by a technique such as a method of (ing Polymer Network). 3. 3. The method according to claim 2, wherein the second or uncured or semi-cured
3. The double-glazed glass according to claim 1, wherein the spacer is a one-component type using a latent curing agent method or a self-curing method. 4. The double glazing according to claim 1, wherein the second spacer is filled with a flake-like filler. 5. The double spacer according to claim 4, wherein the second spacer is filled with a flake-like filler, and the orientation of the flake-like filler is controlled substantially perpendicular to the surface of the glass sheet. Layer glass. 6. The double-glazed glass according to claim 1, wherein a tape is adhered over a part or the entire periphery of the peripheral end surface. 7. A double glazing system in which a sealed hollow space is formed by arranging two sheet glasses at a predetermined interval and arranging a spacer for maintaining the interval at the peripheral edge of the panel. In the manufacturing method, the spacer is formed of at least two layers of a first spacer and a second spacer, and a spacer made of a self-adhesive string-like resin layer filled with a desiccant as the first spacer is placed inside. hand,
As the second spacer, the one made of an uncured or semi-cured string-shaped curable resin layer is turned to the outside, and is attached to the peripheral edge of one plate glass or slightly inside, and then the other is After attaching and bonding the plate glass and pressure-bonding and integrating the adhesive, the second uncured or semi-cured state
A method for producing a double-glazed glass, characterized in that the spacer is hardened and simultaneously bonded and integrated firmly with the plate glass. 8. The double-glazed glass according to claim 7, wherein the first spacer and the second spacer are bonded in advance to form a string, and the spacer is partially self-adhesive. Manufacturing method.