JP2006021959A - Double-glazed glass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double-glazed glass which is thin to such a degree that existing single glass fixed to a glass sash is replaced by the double-glazed glass without changing the glass sash and similarly, the existing double-glazed glass is replaced by a laminated double-glazed glass, is easily manufactured, and uses a resin made spacer. <P>SOLUTION: In the double-glazed glass in which a pair of the glass plates are separately placed across the spacer arranged on the peripheral part and a hermetically sealed hollow layer is formed between the glass plates, the thickness of the hollow layer in which krypton gas is filled is ≥1.0 mm and ≤2.5 mm and the spacer is made of a resin comprising a hot melt adhesive composed of a thermoplastic copolymer elastomer selected from a styrene-ethylene-butylene-styrene block copolymer, a styrene-butylene-styrene block copolymer or a styrene-isoprene-styrene block copolymer in which the desiccant is kneaded. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a multi-layer glass used for a window glass in an architectural field such as a house.

  Recently, it has been widely used in window glass made of double-glazed glass in order to create a comfortable living environment with excellent heat insulating performance, saving heating and cooling costs, and energy saving. The double-glazed glass has an excellent heat insulating performance due to the sealed space formed by the glass plates and the spacers, that is, the hollow layers, with the spacers being sandwiched between the peripheral edges of the two glass plates.

  Usually, a metal cylindrical hollow body filled with a desiccant is known as a spacer for double-layer glass, and is disclosed in Patent Document 1 and the like. FIG. 4 is a cross-sectional view of the peripheral edge of a double-glazed glass produced using a spacer formed by filling a hollow metal spacer with a desiccant.

  As shown in FIG. 4, the metal spacer 1 is bonded to the glass plates G1 and G2 with primary seals 2 and 2 ', and on the outside thereof, a secondary sealant is mainly used to maintain the shape of the double-glazed glass. 3 is used. The metal used for the metal spacer 1 is typically aluminum and is filled with a desiccant 4 inside. Polysulfide-based, silicone-based, polyurethane-based, and butyl rubber-based resins are used as the primary seal 2, 2 ′ and secondary seal 3 as the seal material. By the seal material, the metal spacer 1 and the glass plates G1, G2 are used. It is firmly bonded and integrated, and has a hollow layer 5 surrounded by glass plates G1 and G2 and a metal spacer. This type of double-glazed glass uses a metal spacer 1 that is easy to transfer heat, and therefore has a drawback that the thermal insulation performance of the peripheral part of the double-glazed glass is lower than that of the central part of the double-glazed glass.

  In order to improve the heat insulation performance of the peripheral portion of the multilayer glass, there is a multilayer glass using a resin spacer kneaded with a desiccant instead of the metal spacer 1. FIG. 5 is a cross-sectional view of the peripheral edge of a double-glazed glass composed of a resin spacer kneaded with a desiccant and a seal.

  As shown in FIG. 5, the outside of the resin spacer 6 in which a butyl rubber, polyisobutylene, or a thermoplastic copolymer elastomer containing at least a polyisobutylene as a component as a resin main component contains a desiccant, There is a double-glazed glass that uses a thermoplastic resin such as plasticized polyvinyl chloride resin as a sealing material and serves as a seal 7, and is disclosed in Patent Document 2. In addition, the double-glazed glass using the metal spacer 1 is not easy to be disassembled after the end of use, but the resin spacer 6 is used to facilitate disassembly.

  Moreover, when replacing the window glass using the conventional glass plate single plate with multilayer glass, in order to apply multilayer glass without exchanging the existing sash frame, the multilayer glass is preferably thinner. In order to provide heat insulation performance such as a dew condensation prevention effect, a normal double-layer glass with air inside the hollow layer has a thickness of 6 mm, and when combined with a pair of glasses with a plate thickness of 3 mm, the total thickness is 12 mm. is necessary. When the existing sash frame is thin for a single glass plate sash window, it is difficult to use the existing sash particularly in a sliding door.

  On the other hand, multi-layer glass in which a hollow layer is filled with krypton gas, which has a better heat insulating effect than air, and the hollow layer is thinned, is known in Patent Document 3, Patent Document 4, Patent Document 5, and Patent Document 6.

  When making a double-glazed glass with a hollow layer made of thin glass, by filling the hollow layer of the double-glazed glass with a thin hollow layer, the metal spacer made of aluminum, etc. is filled with a desiccant and fitted with a corner key. Such a manufacturing process is not suitable because it is complicated.

The multilayer glass as shown in FIG. 5 using the resin spacer 6 using butyl rubber or polyisobutylene resin containing a desiccant is equivalent to the multilayer glass as shown in FIG. 4 using the metal spacer 1. In order to have the rigidity of butyl rubber or polyisobutylene resin, it is necessary to use a long molecular chain having a high melt viscosity, and heat-melt butyl rubber or polyisobutylene kneaded with a desiccant to make glass. When the resin spacer 6 is molded while being injected from the nozzle between the plates G1 and G2, there is a problem that a commercially available hot melt applicator cannot be used to obtain a high injection pressure and a dedicated molding machine is required. there were. In addition, there is a problem that a device for moving the plurality of glass plates G1 and G2 while being separated for filling is required, and the device is complicated and expensive. The device is known from Patent Document 7 or Patent Document 8 or the like.
JP 59-45149 A JP-A-9-77536 Utility model registration No. 3073130 Utility model registration No. 3074335 Utility model registration No. 3087372 Utility model registration No. 3096372 JP-A-7-17748, JP 11-236250 A

  Glass sash can be replaced with glass sash with high heat insulation effect without replacing glass sash with existing glass sash, or glass sash with existing multi-layer glass fixed When a metal spacer is used, it is extremely difficult to fabricate a double-glazed glass that is thin enough to be replaced with a laminated double-glazed glass with crime prevention and soundproofing functions without replacing the metal.

  On the other hand, when butyl rubber or polyisobutylene kneaded with a desiccant is used as a resin spacer, when molding into a resin spacer while being melted by heating and injected from a nozzle between glass plates, a high injection pressure is obtained. A commercially available hot melt applicator cannot be used, and a dedicated molding machine is required.

  The present invention replaces a glass sash that fixes an existing glass sheet single plate with a multi-layer glass having a high heat insulation effect without replacing the glass sash, or a glass sash that fixes an existing multi-layer glass. In addition, it is much easier to produce double-glazed glass using resin spacers that are thin enough to be replaced with crime-proof and soundproof laminated glass without changing the glass sash using a commercially available hot melt applicator. It aims to be able to do it.

  In the double-glazed glass of the present invention, in order to obtain the same or better thermal insulation performance while reducing the thickness of the hollow layer compared to the conventional double-glazed glass made of air, the hollow glass has a thermal insulation performance higher than that of air. A styrene-ethylene-butylene-styrene block copolymer, a styrene-butylene-styrene block copolymer, or a styrene-butylene-styrene block copolymer kneaded with a desiccant formed in a resin spacer and molded with a commercially available hot melt applicator. A resin spacer made of a hot melt adhesive containing a thermoplastic copolymer elastomer selected from styrene-isoprene-styrene block copolymers as a component is used. Compared to the melt viscosity of butyl rubber or polyisobutylene used in conventional resin spacers, styrene-ethylene-butylene-styrene block copolymers, styrene-butylene-styrene block copolymers and styrene-isoprene-styrene block copolymers A hot melt adhesive comprising a thermoplastic copolymer elastomer selected from the above as a component has a low melt viscosity and can be easily injected with a commercially available hot melt applicator, but has excellent rigidity after curing.

  The present invention is a method of filling krypton gas in a multi-layer glass in which a pair of glass plates are spaced apart by a spacer disposed at a peripheral edge and a sealed hollow layer is formed between the pair of glass plates. The thickness of the hollow layer is 1.0 mm or more and 2.5 mm or less, and the spacer is a styrene-ethylene-butylene-styrene block copolymer, styrene-butylene-styrene block copolymer or styrene kneaded with zeolite. A multilayer glass characterized in that it is a resin spacer made of a hot melt adhesive comprising a thermoplastic copolymer elastomer selected from isoprene-styrene block copolymers as a component.

  Furthermore, the present invention is the above-mentioned double-glazed glass, wherein the content of zeolite with respect to the weight of the resin spacer is from 10.0% by weight to 40.0% by weight.

  Furthermore, the present invention is the above-mentioned multilayer glass, wherein a reinforcing material is inserted into the resin spacer.

  Furthermore, the present invention is the above multi-layer glass, wherein the reinforcing material is a rod-shaped, spiral-shaped wire or a U-shaped metal.

  Furthermore, the present invention is characterized in that a hot melt type or reactive hot melt type butyl rubber-based sealing material and / or a silicone sealant is filled in a concave portion formed by the outer peripheral portion of the resin spacer and the peripheral portion of the glass plate. It is said multilayer glass.

  In the multilayer glass of the present invention, the thickness of the hollow layer filled with krypton gas is 1.0 mm or more and 2.5 mm or less. In the present invention, a styrene-ethylene-butylene-styrene block copolymer, a styrene-butylene-styrene block copolymer, or a styrene-isoprene-styrene block, which has a low melt viscosity and is easily injection-molded, in a very narrow gap between glass plates. A hot melt adhesive composed of a thermoplastic copolymer elastomer selected from copolymers is molded into a resin spacer using a commercially available hot melt applicator to heat and melt conventional butyl rubber or polyisobutylene with a high melt viscosity. In comparison with resin spacers, it was easier to produce double-glazed glass.

  In the present invention, since the resin spacer can be injection-molded with a commercially available hot melt applicator, it is possible to replace the existing sash with a multi-layer glass having a high heat insulating property, and a laminated multi-layer glass having a crime prevention / soundproof function. Easy production of a thin double-glazed glass has become easy.

  FIG. 1 is a cross-sectional view of a peripheral edge of a multilayer glass according to the present invention.

  The embodiment of the present invention will be specifically described below with reference to FIG.

  As shown in FIG. 1, the multi-layer glass of the present invention has a pair of glass plates G1 and G2 spaced apart via a resin spacer 8 arranged at the peripheral edge, and a pair of glass plates G1 and G2. A sealed hollow layer 5 filled with krypton gas is formed, the thickness of the hollow layer 5 is 1.0 mm or more and 2.5 mm or less, and styrene-ethylene- kneaded with zeolite as a desiccant Resin spacer comprising a hot melt adhesive comprising a thermoplastic copolymer elastomer selected from butylene-styrene block copolymer, styrene-butylene-styrene block copolymer or styrene-isoprene-styrene block copolymer. 8 is used.

  Further, the multilayer glass of the present invention is a thermoplastic selected from styrene-ethylene-butylene-styrene block copolymer, styrene-butylene-styrene block copolymer or styrene-isoprene-styrene block copolymer kneaded with zeolite. The resin spacer 8 made of a hot melt adhesive containing a copolymer elastomer as a component is made by kneading zeolite as a desiccant, and the content of the zeolite with respect to the weight of the resin spacer 8 is 10.0% by weight or more. 40.0% by weight or less.

  Further, the multilayer glass of the present invention has a hot melt type or reactive hot melt type butyl rubber sealing material and / or silicone in a recess formed by the outer peripheral part of the resin spacer and the peripheral parts of the glass plates G1 and G2. It is characterized by being filled with a sealant.

  When producing the multi-layer glass of the present invention, as shown in FIG. 1, a pair of glass plates G1 and G2, styrene-ethylene-butylene-styrene block copolymer kneaded with zeolite kneaded with desiccant, styrene A resin spacer 8 made of a hot melt adhesive composed of a thermoplastic copolymer elastomer selected from a butylene-styrene block copolymer or a styrene-isoprene-styrene block copolymer, and arranged opposite to each other, The hollow layer 5 is filled with krypton gas, which has a better heat insulation effect than air. At that time, the purity of the krypton gas is preferably at least 80.0% or more by volume, and it is preferable to increase the purity as much as possible. Usually, krypton is obtained by liquefying air and then separating and concentrating it according to the difference in boiling point. Air components remain as impurities and deteriorate heat insulation performance. High-purity krypton gas is commercially available from Tokyo Gas Chemical Co., Ltd.

  In the multilayer glass of the present invention, the thickness of the hollow layer 5 filled with krypton gas is preferably 1.0 mm or more and 2.5 mm or less.

  Even if the krypton gas is filled in the hollow layer 5, if the thickness of the hollow layer 5 is less than 1.0 mm, desired heat insulation performance cannot be obtained.

  As shown in FIG. 4, air is sealed in the hollow layer 5 using the metal spacer 1, and the thinnest one that is usually marketed as a double-glazed glass is a pair of glass plates G 1 having a plate thickness of 3 mm. , G2 is used, the thickness of the hollow layer 5 is 6 mm, and the total thickness is 12 mm. In order to reduce the thickness, even if a double-layer glass is produced with a pair of glass plates G1 and G2 having a thickness of 2.5 mm, the total thickness is 11 mm, and it is used in a single-plate glass when replacing a conventional single-plate glass. It is extremely difficult to use a sash frame having a width of 9 mm as it is.

In the double-glazed glass of the present invention shown in FIG. 1, the thickness of the hollow layer 5 filled with krypton gas is 2.5 mm or less, and the plate thickness is 3 mm so that the sash frame can be exchanged even in the 9 mm size used in the single plate glass. Are added to a total thickness of 8.5 mm. When glass plates G1 and G2 having a thickness of 2.5 mm are used instead of the thickness of 3 mm, the total thickness of the multilayer glass of the present invention is 7.5 mm. In order to replace the conventional single plate glass using the sash frame as it is, in the double glazing of the present invention, the total thickness is preferably 8.5 mm or less. In the present invention, the resin spacer 8 shown in FIG. Using styrene-ethylene-butylene-styrene block copolymer, styrene-butylene-styrene block copolymer or styrene-isoprene-styrene block copolymer as the main component, adding zeolite as a desiccant, After kneading, the resin spacer 8 is formed by injection molding between glass plates using a commercially available applicator. When injection molding is performed between the glass plates G1 and G2, for example, the glass plates G1 and G2 are held at a predetermined interval with a suction pad, or a gap holding member is inserted and fixed in advance between the glass plates G1 and G2. Inject to the peripheral edge between the glass plates G1 and G2.

  Hot melt adhesives containing a thermoplastic copolymer elastomer selected from styrene-ethylene-butylene-styrene copolymer, styrene-butylene-styrene block copolymer or styrene-isoprene-styrene block copolymer have a melt viscosity. Is easy to injection mold because of its low thickness, and a commercially available hot melt applicator is provided in a very narrow gap between the glass plates G1 and G2 having a thickness of the hollow layer 5 filled with krypton gas of 1.0 mm or more and 2.5 mm or less. It is easy to injection mold using a resin spacer to make a multi-layer glass.

  In comparison, a conventional hot melt applicator cannot be used to obtain a high injection pressure to heat and melt conventional butyl rubber or polyisobutylene with high melt viscosity to form a resin spacer, and a dedicated molding machine is required. And

The styrene-ethylene-butylene-styrene block copolymer has a melt viscosity of 10 ² poise or more and a shear rate of 10 S ⁻¹ or more and 10 ⁴ S ⁻¹ or less under the conditions of heating and melting temperature and 200 ° C. ^{It is 6} poises or less, that is, 10 Pa · S or more and 10 ⁵ Pa · S or less, and is molded in the same range as polypropylene in a heat melting temperature range of 180 ° C. or more and 230 ° C. or less. Conventionally, compared to butyl rubber and polyisobutylene that have been used for resin spacers, it is a thermoplastic copolymer elastomer that has a low heat melt viscosity, is easy to injection molding and has the same or high rigidity when cured after molding, Using a commercially available hot melt applicator, it is easy to inject between glass plates and is a material suitable for molding into a resin spacer.

  There are styrene-propylene rubbers and acrylic rubbers that are molded in the same manner as polypropylene in the heating and melting temperature range of 180 ° C or higher and 230 ° C or lower, but styrene-ethylene-butylene-styrene block copolymers are molded. In addition to being easy to use, it is thermoplastic, so it can be reused without losing its physical properties and ease of molding. After curing, it has rubber elasticity comparable to vulcanized rubber, and has compression set. And excellent rigidity such as excellent rebound resilience is obtained. In addition, it has various advantages such as being resistant to ultraviolet rays and being hardly oxidized, and is extremely suitable for use as the resin spacer 8 of the multilayer glass of the present invention.

  Examples of such thermoplastic copolymer elastomers include styrene-butylene-styrene block copolymers, styrene-isoprene-styrene block copolymers, in addition to styrene-ethylene-butylene-styrene block copolymers. .

  As such a thermoplastic copolymer elastomer, for example, a styrene-isoprene-styrene block copolymer is commercially available as a styrene-ethylene-butylene-styrene block copolymer from the US Shell Chemical Company under the trade name Kraton-G. As a product name, Quintac SIS is commercially available from Zeon Corporation, and is suitably used for the multilayer glass of the present invention.

  In the kneading resin used for the resin spacer 8, the zeolite is kneaded as a desiccant. The total weight of the polymer and zeolite, that is, a thermoplastic copolymer selected from styrene-ethylene-butylene-styrene block copolymer, styrene-butylene-styrene block copolymer, or styrene-isoprene-styrene block copolymer. The content of zeolite with respect to the combined weight of the hot-melt adhesive containing the polymer elastomer and the zeolite is preferably 10.0% by weight or more and 40.0% by weight or less. When the content of zeolite is less than 10.0% by weight, the initial dew point performance of the obtained double-glazed glass is deteriorated, and when it exceeds 40.0% by weight, the rigidity necessary for the spacer 8 becomes insufficient. In addition, as for zeolite, a synthetic zeolite-based adsorbent is commercially available, for example, from Tosoh Corporation under the trade name, Zeolum, and is used for the multilayer glass of the present invention.

  In order to improve the strength of the multilayer glass of the present invention, the resin spacer 8 formed between the glass plates G1 and G3 has a high rigidity such as a rod-shaped wire, a spiral wire, or a U-shaped metal. It is preferable to include a reinforcing material. The reinforcing material plays a role as a spacing member, and the production of the multilayer glass becomes easier. After the reinforcing material is inserted and fixed in advance between the glass plates G1 and G2, the resin spacer 8 is injection-formed at the peripheral edge between the glass plates G1 and G2 so that the reinforcing material is contained. In the double-glazed glass of the present invention, since the resin spacer has a low melt viscosity, the reinforcing material is easily embedded in and embedded in the resin spacer during injection molding.

  In the multi-layer glass of the present invention, the U-shaped portion formed by the resin spacer 8 and the peripheral edges of the glass plates G1 and G2 is a hot-melt type or reactive hot-melt type butyl rubber sealing material. It is desirable to fill and seal with a silicone sealant or the like. The seal 9 not only prevents moisture permeation of the multi-layer glass into the hollow layer 5, but also has an effect of firmly integrating the glass plates G1 and G2, and an effect of protecting the ends of the glass plates G1 and G2. There is. The silicone sealant is inferior in moisture permeability to the butyl rubber-based sealing material, but is excellent in the effect of firmly integrating the glass plates G1 and G2.

  As a hot-melt type butyl rubber-based sealing material, Yokohama Rubber Co., Ltd., product number, M155 and M144, US Delchem Co., product number, D-2000, US PRC-Desoto Corporation, product number, PRC-595, US BOSTIK Product number BOSTIK9190 etc. are mentioned and used for the multilayer glass of this invention. As the silicone sealant, a commercially available silicone sealant is used.

  The glass plates G1 and G2 used in the multi-layer glass according to the present invention include a glass plate by a float method, a heat ray reflective glass, a silver thin film, or an oxide coated with a single layer or a laminate of a metal film or a metal thin film on the glass plate surface A glass plate with a low-E film formed by laminating metal oxide thin films such as zinc, a laminated glass in which a glass plate is laminated and integrated with a transparent resin such as polyvinyl butyral as an intermediate film, and an organic glass made of a transparent resin A board etc. are mentioned.

  In order to further improve the heat insulating performance of the multilayer glass of the present invention, it is preferable to use the heat ray reflective glass plate and the glass plate with Low-E film for the multilayer glass. In addition, as a heat ray reflective glass, the product made from Central Glass Co., Ltd., a brand name, Sky Cool, Sky Rex, etc. are used.

  In order to further improve the soundproofing function of the multilayer glass of the present invention and to provide a crime prevention function, polyvinyl butyral, ethylene vinyl acetate copolymer, polyurethane as an interlayer film that is difficult to break even if the glass plate is broken It is preferable to use a laminated multilayer glass using a laminated glass having a transparent resin layer such as polycarbonate or polyester.

  FIG. 2 is a cross-sectional view of the peripheral edge of the multilayer glass according to the present invention using laminated glass. As shown in FIG. 2, glass using three glass plates G1, G2, G3 having a thickness of 3 mm, the hollow layer 5 enclosing krypton gas being 2.5 mm, and the intermediate film 10 being 0.76 mm. The multi-layer glass of the present invention using a laminated glass having a laminated structure of plate G1 / hollow layer 5 / glass plate G2 / intermediate film 10 / glass plate G3 has a total thickness of 12.26 mm and is usually a commercially available hollow glass. It is replaced with a double-glazed glass having a total thickness of 12 mm with the inside of the layer 5 as air, and the window glass has a heat insulation performance equal to or higher than that, and becomes a laminated double-glazed glass excellent in soundproofing and security performance. If a glass plate with a thickness of 2.5 mm is used instead of a thickness of 3 mm, the total thickness of the multilayer glass of the present invention using laminated glass is 11.76 mm, and the inside of the commercially available hollow layer 5 is usually inside. It is easily exchanged for a double-layer glass with a total thickness of 12 mm, which is made of air.

Example 1
A multilayer glass according to the present invention was prepared. This will be described with reference to FIG.

  As a styrene-ethylene-butylene-styrene block copolymer, manufactured by Shell Chemical, trade name, Krayton G-1726, 40 parts by weight, as a tackifier, manufactured by Tonex Co., Ltd., trade name, ECR1401, 60 parts by weight , Ube Industries, Ltd., trade name, UT2780, 30 parts by weight, desiccant, zeolite, Tosoh Corporation, trade name, Zeolum A-4, 30 parts by weight, 0 as black colorant .5 parts by weight of carbon black was prepared and kneaded with a pressure kneader. Thereafter, it was put into a tank in a melt hot technology applicator manufactured by Melt Giken Co., Ltd., model, M186 (hereinafter abbreviated as applicator M186), and heated and melted to 200 ° C. Subsequently, the inside of the gun hose connected to the applicator M186 is transported, ejected from a nozzle attached to the gun hose, and supported by a suction pad in parallel at intervals of 2 mm, the plate thickness is 3 mm, the size is 300 mm × 300 mm 2 The glass plates G1 and G2 were injected between the glass plates G1, and molded into a resin spacer 8.

  FIG. 3 is a plan view of a multi-layer glass for explaining the procedure of krypton-gas sealing. Next, as shown in FIG. 3, injection needles 11 and 11 ′, which are metal tubes having a diameter of 1 mm, were inserted into the two corners so as to penetrate the hollow layer 5 through the spacer 8.

  In the state where the double-layer glass is erected, as shown in FIG. 3, using krypton gas that is three times the volume of the hollow layer 5 and replacing the air in the hollow layer 5 from the lower injection needle 11, The hollow layer 5 was filled with krypton gas. The krypton gas is heavier than air, and when krypton gas is injected from the lower injection needle 11, the air is discharged from the upper injection needle 11 '. The arrows in FIG. 3 represent the krypton gas flow. After filling, the injection needles 11 and 11 'were removed, the remaining holes were covered with butyl rubber, and the hollow layer 5 was sealed and sealed.

  Thereafter, as shown in FIG. 1, the U-shaped space between the glass plates G1 and G2 formed by the glass plates G1 and G2 and the spacer 8 is sealed with a hot-melt type butyl rubber sealant. The multi-layer glass of the present invention was completed with the seal 9.

    Specifically, in the same manner as in Example 1, as a hot-melt type butyl rubber-based sealing material, a product number manufactured by Yokohama Rubber Co., Ltd., product number M155 was charged into a tank in the applicator M017 and melted by heating at 190 ° C.

  The hot melt butyl heated and melted at 190 ° C. is transported through the gun hose connected to the applicator M017 into this character-shaped recess formed by the end portions of the two glass plates G1 and G2 and the multi-layer glass spacer 8. , Injected from the nozzle attached to the gun hose, filled in this letter-shaped recess formed by the two glass plates G1 and G2 ends and the resin spacer 8, and used as a seal 9 to seal and integrate the outer periphery of the multilayer glass did.

In order to evaluate the initial dew point performance (one day after production), the dew point was measured in accordance with JIS R 3209 (1998). After 1 day, the initial dew point performance was −60 ° C., which was a good initial dew point performance. JIS R 3209 (1998) The required initial dew point was lower than -35 ° C.
Example 2
As styrene-isoprene-styrene copolymer, manufactured by Nippon Zeon Co., Ltd., trade name, QUINTAC 3433N, 20 parts by weight, as a tackifier, manufactured by Arakawa Chemical Industries, Ltd., trade name, Alcon P120, 40 weight Part, manufactured by Mitsui Chemicals, as a softener, product name, HW800P, 20 parts by weight, zeolite as a desiccant, manufactured by Tosoh Corporation, product name, Zeorum A-4, 20 parts by weight, as a black colorant amount Of 0.5 part by weight of carbon black was prepared and heated and kneaded with a pressure kneader. Then, it was put into a tank in an applicator M017 manufactured by Melt Giken Co., Ltd., which is a hot melt applicator, and heated and melted to 190 ° C. Next, two sheets with a thickness of 3 mm, a size of 300 mm x 300 mm, transported through the gun hose connected to the applicator M017, ejected from a nozzle attached to the gun hose, and supported in parallel at intervals of 2 mm using an adsorption pad Were injected into the wall between the glass plates G1 and G2 and molded into a resin spacer 8.

  FIG. 3 is a plan view of a multi-layer glass for explaining the procedure of krypton-gas sealing. Next, as shown in FIG. 5, injection needles 11 and 11 ′, which are metal tubes having a diameter of 1 mm, were inserted into the two corners so as to penetrate the hollow layer 5 through the spacer 8.

  In the state where the double-layer glass is erected, as shown in FIG. 3, using krypton gas that is three times the volume of the hollow layer 5 and replacing the air in the hollow layer 5 from the lower injection needle 11, The hollow layer 5 was filled with krypton gas. The krypton gas is heavier than air, and when krypton gas is injected from the lower injection needle 11, the air is discharged from the upper injection needle 11 '. The arrows in FIG. 3 represent the krypton gas flow. After filling, the injection needles 11 and 11 'were removed, the remaining holes were covered with butyl rubber, and the hollow layer 5 was sealed and sealed.

  Thereafter, as shown in FIG. 1, the U-shaped space between the glass plates G1 and G2 formed by the glass plates G1 and G2 and the spacer 7 is a hot-melt type as in the first embodiment. It was sealed with a butyl rubber-based sealing material to form a seal 9 to complete the multilayer glass of the present invention.

  In order to evaluate the initial dew point performance (one day after production), the dew point was measured in accordance with JIS R 3209 (1998). After 1 day, the dew point was −55 ° C., which is a good initial dew point performance. JIS R 3209 (1998) The required initial dew point was lower than -35 ° C.

It is sectional drawing of the peripheral edge part of the multilayer glass by this invention. It is sectional drawing of the peripheral edge part of the multilayer glass by this invention using a laminated glass. It is a top view of the multilayer glass for demonstrating the procedure of enclosure of krypton gas. It is sectional drawing of the peripheral edge part of the multilayer glass produced using the spacer formed by filling a hollow metal spacer with a desiccant. It is sectional drawing of the peripheral edge part of the multilayer glass which consists of the spacer which knead | mixed the desiccant, a primary seal part, and a secondary seal part.

Explanation of symbols

G1, G2, G3 Glass plate 1 Metal spacer 2, 2 'Primary seal 3 Secondary seal 4 Desiccant 5 Hollow layer 6 Resin spacer 7, 9 Seal 8 Resin spacer
10 Interlayer 11, 11 'Injection needle

Claims (5)

A hollow glass filled with krypton gas in a multi-layer glass in which a pair of glass plates are spaced apart by a spacer disposed at a peripheral edge and a sealed hollow layer is formed between the pair of glass plates Styrene-ethylene-butylene-styrene block copolymer, styrene-butylene-styrene block copolymer or styrene-isoprene-styrene block in which the thickness of the layer is 1.0 mm or more and 2.5 mm or less and the spacer is kneaded with zeolite A multilayer glass comprising a resin spacer made of a hot-melt adhesive containing a thermoplastic copolymer elastomer selected from copolymers as a component. 2. The multilayer glass according to claim 1, wherein the content of the zeolite with respect to the weight of the resin spacer is 10.0 wt% or more and 40.0 wt% or less. The multilayer glass according to claim 1 or 2, wherein a reinforcing material is contained in the resin spacer. The multilayer glass according to claim 3, wherein the reinforcing material is a metal rod, a spiral wire, or a U-shaped metal. The hot-melt type or reactive hot-melt type butyl rubber sealant and / or silicone sealant is filled in a concave portion formed by the outer peripheral portion of the resin spacer and the peripheral edge of the glass plate. Item 5. The multilayer glass according to any one of item 4.

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