JP5294151B2 - Fireproof safety glass, its manufacturing method and fireproof safety glass window construction method - Google Patents

Description

 The present invention relates to a fire safety glass that functions as a fire door during a fire and functions as a safety glass in a normal state, a manufacturing method thereof, and a construction method of a fire safety glass window using the fire safety glass.

  In recent years, with the increase in large buildings such as office buildings and department stores, the function of a fire door that blocks the flame and smoke in the event of a fire and prevents the spread of fire to the maximum extent, and even if it breaks in normal times, debris will not scatter There has been an increasing demand for fire safety safety glass having the function of safety glass that does not cause a through hole. Some of these types of fire safety glass are certified as specific fire prevention equipment by the Ministry of Land, Infrastructure, Transport and Tourism and are commercially available.

  This specific fire prevention equipment is stipulated in Article 112, Paragraph 1 of the Building Standards Law Enforcement Ordinance. When exposed to a fire caused by a normal fire, flames are applied to surfaces other than the heated surface for 1 hour after the start of heating. The fire prevention equipment has a performance that does not come out and has passed the test by the evaluation testing organization designated by the Ministry of Land, Infrastructure, Transport and Tourism.

  For example, Patent Documents 1 and 2 disclose fire-safety safety glass in which a fluororesin film composed only of a chain-like molecular structure is bonded to one side or both sides of a plurality of fire-proof glass plates. Patent Document 3 discloses a method for producing a fire safety glass described in Patent Document 2.

JP-A-4-224938 JP-A-8-132560 Japanese Patent Laid-Open No. 9-2847

  However, the fire safety glass described in Patent Documents 1 to 3 melts the resin film between the glass sheets of the laminated glass in the initial stage at the time of the fire, and accumulates in the lower frame of the construction frame from the lower side of the glass, on the non-heated side. Flames are likely to occur, and depending on the heating conditions, the fire blocking performance of the original fire prevention equipment may not be exhibited. Also, if the size of the fire safety glass is larger than 1000 mm x 2000 mm, the total amount of gas generated from the resin film during heating such as fire increases, and if the gas cannot escape from between the laminated glass sheets, the glass sheet will explode. There is a problem that the probability of breakage increases.

  The present invention does not accumulate in the lower frame of the work frame when the resin layer between the glass sheets of the laminated glass melts in the initial stage of the fire, does not generate a flame on the non-heated side, and the resin layer It is a technical problem to provide a fire safety glass having a high fire shut-off performance without causing explosion of the glass plate due to gas escape failure, a manufacturing method thereof, and a construction method of a fire safety glass window using the fire safety glass To do.

  The fire safety glass of the present invention made to solve the above technical problem is made of a laminated glass in which a plurality of heat-resistant plate glasses are bonded to each other through a resin layer, and the end face of the laminated glass has a 1 / total height. It is characterized by being continuously sealed with a heat-resistant sealing material over a region corresponding to 6 or more and less than 1/2.

 In the present invention, the end face of the laminated glass is continuously sealed with a heat-resistant sealing material over a region corresponding to 1/6 or more and less than 1/2 of the total height. In glass, when the end surface that is located on the four sides of the light-transmitting surface of the laminated glass and that has a laminated structure composed of a heat-resistant plate glass and a resin layer holds the light-transmitting surface substantially vertically, the end surface that includes one side disposed below A region having a height of 1/6 or more and less than 1/2 from the lower side of both side end surfaces including the corner portions on both sides is continuously sealed with a heat-resistant sealing material, and It means that the end surface which exhibits the laminated structure of the other part of the heat-resistant plate glass is open. Further, in the case of a laminated glass having a circular translucent surface, the diameter of the circle is the total height, so that the end face of the region from one end of the laminated glass to a position that is 1/6 or more and less than 1/2 of the diameter. It is continuously sealed with a heat resistant sealing material. In addition, sealing the end face of the laminated glass in the present invention is not limited to sealing the entire end face exhibiting a laminated structure in the region of 1/6 or more and less than 1/2 of the lower side of the overall height, If at least the end of the resin layer between the heat-resistant plate glasses is sealed so that the melt from the layer does not leak, it belongs to the present invention.

  In addition, the fire safety glass of the present invention is such that the end face of the region of 1/6 or more of the total height is continuously sealed with a heat resistant sealing material, so that the resin layer between the heat resistant glass sheets of the laminated glass at the time of fire When melts, the melt from the resin layer does not leak into the lower frame of the construction frame. Furthermore, in order to prevent melt leakage with respect to heating for a longer time, it is preferable that a region of 1/4 or more of the total height is sealed with a heat-resistant sealing material. In addition, if the center part in the height direction of both end faces where the temperature of the laminated glass edge rises the fastest is sealed, the gas generated from the resin layer will not escape and the possibility of the heat-resistant plate glass exploding increases. From experience, the region to be sealed with the heat-resistant sealing material should be less than half of the total height.

  In the present invention, fire safety glass means the safety that most of glass fragments are not scattered even if it is broken by the action of external force by JIS R 3205 “Laminated glass”, and Article 112, Paragraph 1 of the Building Standards Law Enforcement Ordinance. By the heating test based on the standard heating curve of plate glass or ISO834 that has fireproof performance that satisfies the standard of specified specific fireproofing equipment, it means that it has passed without cracking or falling off. As heat-resistant plate glass, for example, “Chemical standards for heat-resistant plate glass” by the Association of Curtain Walls and Fire Protection Openings, Sheet Glass Association, Glass Block Industry Association, established September 1, 1995, revised April 1, 2007 As described in 1., heat-resistant tempered glass made of soda-lime glass subjected to special physical strengthening treatment, low-expansion fireproof glass made of physically-reinforced borosilicate glass, or low-expansion heat-resistant glass made of lithium alumina silicate-based composition Crystallized glass can be used.

In addition, the fireproof safety glass of the present invention has a linear expansion of -10 × 10 ⁻⁷ / K or more and 10 × 10 ⁻⁷ / K or less in the temperature range of 30 to 750 ° C. among the heat-resistant plate glass used. The heat-resistant crystallized glass having a coefficient has a linear expansion coefficient close to zero even in a high-temperature environment that reaches 800 ° C. at the time of fire, so it is caused by rapid heating by a flame or water discharge from a sprinkler, etc. No damage due to thermal shock during rapid cooling. On the other hand, when the linear expansion coefficient of the heat-resistant plate glass is out of the range of −10 to 10 × 10 ⁻⁷ / K and the expansion and contraction due to the temperature change increases, the deformation of the plate glass at a high temperature of 800 ° C. cannot be ignored, and the heating condition Depending on the degree of thermal shock, the probability of breakage increases. Furthermore, the linear expansion coefficient is preferably in the range of −5 to 5 × 10 ⁻⁷ / K which is close to zero. Further, this heat-resistant crystallized glass has a β-quartz solid solution precipitated as a main crystal, and is not softened and deformed even at a high temperature of 800 ° C. at which ordinary window glass softens and deforms. It does not cause damage and has an excellent function of blocking flames and smoke. The use of heat-resistant crystallized glass having such a performance is effective in satisfying the standard of the flame-shielding performance of the specific fire prevention equipment stipulated in Article 112, Paragraph 1 of the Building Standard Law Enforcement Ordinance. Further, it is preferable that the two transparent heat-resistant plate glasses are made of heat-resistant crystallized glass in order to realize high fire resistance. For example, if NEC Electric Glass Co., Ltd. has obtained certification for specific fire prevention equipment, the certification number: EA-0245, the name of the construction method, etc. that has obtained certification: heat-resistant laminated glass-fitted steel window Append).

  In the fire safety glass of the present invention, the resin layer is made of polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (PET), polycarbonate (PC), acrylic, ultraviolet curable resin. It is made of a fluororesin having a chain-like molecular structure, and the thickness of the resin layer is 0.2 mm or more and 2 mm or less.

  Further, in the fire safety glass of the present invention, even if the resin used for the resin layer is more easily combusted than fluororesins such as PVB, EVA, PET, PC, acrylic, and UV curable resin, laminated glass If the mating surface opening of the heat-resistant plate glass from the end surface disposed at least below to the lower portion of the side surface including the corner portions on both sides is sealed with a heat-resistant sealing material, the flame is formed on the non-heating side. Is less likely to penetrate.

  Furthermore, in the fire safety glass of the present invention, the resin used for the resin layer is made of a fluororesin having a chain molecular structure, for example, tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride monomers As a monomer constituting the resin film, for example, tetrafluoroethylene (TFE), hexafluoropropylene (HFP), vinylidene fluoride (VDF), polychlorotrifluoroethylene (PCTFE), vinyl fluoride (VF), perfluoroalkyl vinyl ether (PFA), and the like can be used. In particular, a fluororesin composed of a copolymer of monomers of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, Fusion It is suitable for low. Such a fluororesin consisting only of a chain-like molecular structure is flame-retardant due to a strong interatomic bond between carbon and fluorine and a barrier effect by the fluorine atoms surrounding the carbon skeleton, and does not burn in the air. It has the characteristic. In addition, this fluororesin has a high degree of polymerization and a complex entangled structure compared to other fluororesins having a molecular structure. Therefore, it has a high elongation and tensile strength. A material excellent in penetration resistance and scattering prevention properties can be obtained. In addition, it is preferable that the fluororesin having a chain molecular structure is a fluororesin having only a chain molecular structure in order to make the fireproof safety glass exhibit high flame retardancy and strength.

 Further, in the fire safety glass of the present invention, when the thickness of the resin layer is 0.2 mm or more and 2 mm or less, it is difficult to obtain desired impact resistance when the thickness of the resin layer is less than 0.2 mm. On the other hand, if the thickness of the resin layer exceeds 2 mm, it is difficult to ensure high transparency as a window, and more smoke is likely to be generated when the resin melts in a fire, which is not preferable for fire prevention. Furthermore, if the thickness of the resin layer exceeds 2 mm, both the economic efficiency when manufacturing fireproof safety glass and the workability during assembly are impaired.

  In the fire safety glass of the present invention, the resin layer is preferably a translucent resin film or a transparent resin film. Moreover, when a translucent resin film or a transparent resin film is colored and / or patterned, it is preferable for enabling various design expressions.

  In the present invention, the resin layer is a translucent resin film or a transparent resin film. The resin layer is polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (PET), polycarbonate ( PC), translucent resin film or transparent resin film made of acrylic, UV curable resin, or translucent resin film or transparent resin having a thickness of 0.2 mm to 2 mm made of fluororesin having a chain-like molecular structure It means that it is a film. Moreover, by adjusting the polymerization degree of these resins, additives, and the like, they are made into a translucent or transparent film. In addition, a translucent resin film or a transparent resin film that is colored and / or patterned means a translucent colored film according to the place of use or a design pattern according to the purpose of use of the building. It means that a resin film having a translucent pattern and a resin film having a translucent pattern that exhibits privacy protection performance is used. For example, the use of a resin film that has a function of greatly shielding mid-infrared rays in addition to ultraviolet ray shielding performance and reducing solar heat as a colored film, and a design property required in clothing-related buildings as a patterned resin film It is also possible to use a resin film provided with a decoration that enhances the quality of the product, thereby increasing the number of product variations.

  In the fire safety glass of the present invention, the heat-resistant sealing material is a heat-resistant tape. An end surface having a laminated structure composed of a heat-resistant plate glass and a resin of laminated glass has an overall height of 1 from the end portion disposed below. It means that the structure is continuously sealed with an integral belt-like heat-resistant material over a generally curved or bent region corresponding to / 6 or more and less than 1/2. As the heat-resistant tape, for example, a heat-resistant aluminum glass cloth tape made of a composite material having heat resistance and strength can be used.

  In the method for producing fire safety glass according to the present invention, a plurality of heat-resistant plate glasses are bonded to each other through a resin layer to form a laminated glass, and the end face of the laminated glass is 1/2 or less of 1/6 or more of the total height. It is characterized by continuously sealing with a heat-resistant sealing material over a region corresponding to less than.

  In the production method of the present invention, a laminated glass is formed by using a plurality of heat-resistant plate glasses with a resin layer interposed therebetween, and then the end face of the laminated glass is 1/6 or more of the total height and less than 1/2. The fireproof safety glass of the present invention is manufactured by continuously sealing with a heat-resistant sealing material such as a heat-resistant tape or a heat-resistant sealing agent over a certain area.

  Moreover, the method for producing fire-safety safety glass of the present invention is to arrange a thermoplastic resin over the entire surface of the first heat-resistant plate glass, and to form a laminate by arranging the second heat-resistant plate glass on the resin, A laminated glass is formed by attaching a vacuum packing around the laminated body, heating and pressurizing the laminated body while maintaining a reduced pressure using an autoclave device, and thermocompression bonding the first and second heat-resistant plate glasses. It is characterized by doing.

  As the thermoplastic resin used in the method for producing fire-safety safety glass of the present invention, PVB, EVA, PET, PC, acrylic, and those made of a fluororesin having a chain molecular structure can be used. Further, as a method of arranging the thermoplastic resin, a method of placing a resin film, a method of applying a resin liquid having fluidity before polymerization, a method of applying a resin dissolved in a solvent, or the like can be used. .

In the manufacturing method of the present invention, as the vacuum packing to be attached to the end surface of the entire circumference of the laminate, the material can be silicone, ethylene-propylene-diene rubber (EPDM), etc. The shape is plate, groove, etc. Can be used. This vacuum packing is provided with an exhaust connection pipe for decompressing the inside of the laminate, and is connected to an exhaust port provided in an apparatus such as an autoclave and decompressed by an exhaust apparatus using a vacuum pump or the like. It is supposed to be. Moreover, as heating / pressurizing conditions for an autoclave apparatus or the like for processing the laminate by the production method of the present invention, appropriate conditions of 180 ° C. or lower and 15 kgf / cm ² or lower can be combined.

  In addition, the method for producing fire safety glass of the present invention is a laminate in which an ultraviolet curable resin is applied over the entire surface of the first heat-resistant plate glass, and the second heat-resistant plate glass is disposed on the ultraviolet curable resin. Next, the laminated glass is formed by curing the ultraviolet curable resin in the laminate using an ultraviolet irradiation device.

  In the method for producing fireproof safety glass of the present invention, the ultraviolet curable resin to be used includes acrylic resin, epoxy resin, silicone resin, etc., and UV curable mainly composed of epoxy acrylate, which has a proven track record for building materials. Is preferred. When using such UV curable resin, it can be cured by UV irradiation under room temperature conditions, and even if heat resistant glass sheets with different thermal expansion coefficients are combined, there is no warping or breakage of the heat resistant glass sheets. The variation of the alignment is preferable.

  The construction method of the fire safety glass window according to the present invention is characterized in that the end of the region sealed by the heat resistant sealing material of the fire safety glass of the present invention is installed below the construction frame.

  In the construction method of the fire safety glass window of the present invention, when the end of the region sealed by the heat resistant sealing material of the fire safety glass is installed below the construction frame, the heat resistant plate glass of the laminated glass and the resin layer In the end of the region where the end face exhibiting the laminated structure is continuously sealed by the heat-resistant sealing material over 1/6 or more and less than 1/2 of the total height, for example, in the case of rectangular laminated glass, One side of the laminated glass continuously sealed with the conductive sealing material from one side of the side including the corners on both sides, and the lower side of the two sides of the side facing the lower side, the side of the region is directed downward. It means to be installed on the lower side of the construction frame. In the case of a circular laminated glass, the central part of the region of 1/6 or more and less than 1/2 of the diameter continuously sealed by the heat-resistant sealing material is installed below the construction frame. is there. As the frame used in the present invention, it is possible to use a material obtained by bending a steel or stainless steel plate material that satisfies the standard of the flameproof performance of the specific fireproof equipment, and preferably a material that is small in deformation at the time of fire. According to the construction method of the present invention, the resin melt from the resin layer does not leak into the lower frame of the construction frame when the resin layer between the heat-resistant glass sheets of the laminated glass melts in the event of a fire, and the heat-resistant glass sheet It is possible to realize a fire safety glass window that does not explode.

  The fireproof safety glass of the present invention is made of a laminated glass in which a plurality of heat-resistant plate glasses are bonded to each other via a resin layer, and the end surface of the laminated glass is a region corresponding to less than ½ and not less than 1/6 of the total height. Since the resin layer between the heat-resistant plate glasses melts in the initial stage at the time of a fire, the resin melt from the resin layer is the lower end surface of the laminated glass. It is possible to prevent the occurrence of a non-heated side flame due to the leakage of the resin melt, and to exhibit the high fire blocking performance of the original specific fire prevention equipment. At this time, since it is not sealed except for the lower region of 1/6 or more and less than 1/2 of the total height of both side end faces of the laminated glass, the gas generated between the heat-resistant plate glasses can be easily released. The possibility of explosion can be reduced. Further, since the sealed portion is hidden in the frame, there is no problem in design, and the construction does not have any special work.

Moreover, the fireproof safety glass of the present invention is a heat-resistant crystallized glass having a linear expansion coefficient of -10 × 10 ⁻⁷ / K or more and 10 × 10 ⁻⁷ / K or less in a temperature range of 30 to 750 ° C. as a heat-resistant plate glass. Is used, even if the temperature of one light-transmitting surface of the heat-resistant plate glass rises rapidly due to a fire, the heat-resistant plate glass hardly expands, so it does not cause deformation due to the temperature difference between the front and back surfaces caused by the heating of the flame. High fire resistance can be achieved without causing damage due to thermal shock such as rapid cooling. In addition, heat-resistant crystallized glass is not something that cannot be cut at the construction site like other physically strengthened heat-resistant glass sheets, and is not subjected to physical strengthening. Can be adjusted by cutting.

  In the fire safety glass of the present invention, the resin layer is made of polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (PET), polycarbonate (PC), acrylic, and ultraviolet curable resin. If it is made of a fluororesin having a chain-like molecular structure, the thickness is 0.2 mm or more and 2 mm or less. It is difficult to burn and can exhibit high fireproof performance. Moreover, since the thickness of the resin layer to be used is 0.2 mm to 2 mm, it is possible to break in normal times without sacrificing economy and workability when manufacturing fireproof safety glass while ensuring sufficient transparency. In contrast, it is effective in preventing scattering of glass and penetration resistance.

  Moreover, the fire safety glass of this invention can manufacture a fire safety glass easily if the resin layer is a translucent resin film or a transparent resin film. In addition, if the translucent resin film or transparent resin film is colored and / or patterned, it is possible to express various designs with depth between heat-resistant plate glass, and freedom of design design of fire safety glass The degree can be greatly expanded, and it is suitable for construction in commercial facilities.

  Moreover, when the heat-resistant sealing material for sealing the end face of the laminated glass is a heat-resistant tape, the fireproof safety glass of the present invention is a region of the end face that is 1/6 or more of the total height of the laminated glass and less than 1/2. The fireproof safety glass of the present invention can be easily sealed in a short period of time, and exhibits high fireproof performance and safety even when required for various dimensions and shapes. It becomes possible to do.

 The method for producing fireproof safety glass of the present invention comprises forming a laminated glass by bonding a plurality of heat-resistant glass sheets to each other via a resin layer, and the end face of the laminated glass is at least 1/6 of the total height and less than 1/2. Since the heat-resistant sealing material continuously seals the area corresponding to the above, it is possible to efficiently and easily manufacture the fire safety safety glass of the present invention that exhibits high fire resistance performance and safety. It becomes.

  In the construction method of the fire safety glass window according to the present invention, the end of the region sealed with the heat resistant sealing material of the fire safety glass of the present invention is installed below the construction frame, so that the initial stage at the time of fire When the resin layer between the heat-resistant plate glasses melts, it does not accumulate in the lower frame of the work frame, does not generate a flame on the non-heated side, and does not explode the heat-resistant plate glass due to insufficient gas escape from the resin layer. It is possible to provide a fire safety glass window that exhibits high fire safety performance and safety that does not occur.

It is principal part explanatory drawing of the fire safety glass of this invention, Comprising: (A) is sectional drawing using a tape-shaped heat resistant sealing material, (B) is sectional drawing using a heat resistant adhesive agent. The photograph of the corner part of the fire safety glass using the tape-like heat-resistant sealing material of the present invention. It is explanatory drawing of the manufacturing method of the fire safety safety glass of this invention, Comprising: (A) is explanatory drawing which arrange | positions a raw resin film on one transparent plate glass, (B) is transparent on the other transparent plate glass with a resin film. Explanatory drawing which arrange | positions plate glass, (C) is explanatory drawing which mounts | wears with the vacuum packing around the laminated body of two transparent plate glass, and performs a thermocompression-bonding process with an autoclave apparatus, (D) is sectional drawing of a laminated glass. The partially broken explanatory view of the fire safety glass window using the fire safety glass of the present invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a fire safety glass of the present invention, a manufacturing method thereof, and a construction method of a fire safety glass window will be described with reference to the drawings.

The fireproof safety glass 10 shown in FIGS. 1A and 1B of Example 1 is transparent and heat resistant crystallized glass having a linear expansion coefficient of −2 × 10 ⁻⁷ / K in a temperature range of 30 to 750 ° C. A first heat-resistant plate glass 11 having a size of 1200 × 2400 × 4 mm made of (name: firelight manufactured by Nippon Electric Glass Co., Ltd.) and a second heat-resistant plate glass 12 having the same size made of heat-resistant crystallized glass. , A copolymer of 40% by weight of tetrafluoroethylene (TFE), 20% by weight of hexafluoropropylene (HEP) and 40% by weight of vinylidene fluoride (VDF), and only from a chain molecular structure having a thickness of 0.5 mm. It consists of a laminated glass 10a bonded to each other via a fluororesin film 13 formed. At a height of 800 mm, both end surfaces 10e and 10f including corner portions 10c and 10d on both sides from an end surface 10b having a laminated structure composed of one side heat-resistant glass plates 11 and 12 and a resin film 13 disposed below the laminated glass 10a. 10g of the area reaching about 1/3 of the total height is sealed with a heat-resistant sealing material 17 made of a composite tape of aluminum and glass cloth (name: heat-resistant aluminum glass cloth tape, tape thickness: 0.21 mm). It becomes. Further, as shown in FIG. 1C, the region 10g such as the end face 10b may be sealed with a heat-resistant sealing material 18 made of a heat-resistant sealing material (name: sealant 74 manufactured by Shin-Etsu Silicone Co., Ltd.). .

 When the fire safety glass 10 is manufactured, first, the first heat-resistant plate glass 11 made of the heat-resistant crystallized glass, the second heat-resistant plate glass 12 having the same dimensions, and tetrafluoroethylene (TFE) 40 are used. A fluororesin film 13 made of only a chain molecular structure having a thickness of 0.5 mm was prepared, which was made of a copolymer of 10% by weight, hexafluoropropylene (HEP) 20% by weight, and vinylidene fluoride (VDF) 40% by weight. .

Next, as shown in FIG. 3 (A), after disposing the fluororesin film 13 over the entire surface of the first heat-resistant plate glass 11 of 1200 × 2400 × 4 mm, as shown in FIG. A laminated body 14 as shown in FIG. 3C was obtained by arranging and covering the second heat-resistant plate glass 12 having dimensions. A vacuum packing 15 is attached around the laminated body 14, and the end surface of the laminated body 14 is fitted into the groove portion of the vacuum packing 15. The laminated body 14 with the vacuum packing 15 is put in an autoclave device 16, and a connection pipe (not shown) of the vacuum packing 15 is connected to a connection portion (not shown) in the autoclave device 16 connected to a pressure reduction pump, and the pressure is reduced and heat-resistant plate glass is obtained. While removing bubbles generated at the ends of 11 and 12, thermocompression treatment was performed by holding for 15 minutes in an environment of 140 ° C. and 12 kgf / cm ² . Then, the laminated body 14 is taken out from the autoclave device 16, the vacuum packing 15 is removed, and a laminated glass 10a as shown in FIG. 3 (D) is formed, and a laminated glass 10a shown in FIGS. 1 (A) and 1 (B). The above heat-resistant aluminum is applied to a region 10g of the end surface from the end surface 10b having a short side of 1200 mm constructed on the lower frame to the end surface 10g including the corner portions 10c and 10d on both sides and the bottom side of the side surfaces 10e and 10f to a height of 800 mm. The fireproof safety glass 10 was obtained by sealing with a heat-resistant sealing material 17 made of glass cloth tape.

  Next, a fire safety glass window using the fire safety glass of this embodiment will be described.

  Next, as shown in FIG. 4, the fire safety glass 10 is set in a test window frame 40 made of steel and having a thickness of 1.6 mm in order to carry out an evaluation test of the fire safety glass 10 having the above dimensions. A glass window 50 was obtained. The window frame 40 is found to have a width of 1184 mm and a height of 2380 mm (an included size is 8 mm on the left and right and 10 mm on the top and bottom).

 A heating test similar to the evaluation test of the specific fire prevention equipment was performed using the fire safety glass window 50. The heating conditions of the heating test are based on the following equation 1 for the heating temperature T (average furnace temperature). In this heating test, the heating time t (test elapsed time) was 60 minutes.

  In the test situation, the resin film 13 at the center of the glass started to melt at 7 minutes and 15 seconds from the start of heating, and gradually spread over the entire surface, and the melted film moved downward with gravity. At this time, the melted melt of the resin film 13 was accumulated in the lower part of the laminated glass 10a and brought to a boiling state, but no leakage of the melt into the lower frame 40a was observed. Then, flame and smoke are generated on the heating side from the substantially central portion in the height direction that is not sealed with the heat-resistant sealing material 17 on both side end surfaces 10e and 10f of the laminated glass 10a in 11 minutes and 20 seconds from the start of heating. The degassing was completed as expected without the gas of the resin film 13 accumulating between the first and second heat-resistant glass plates 11 and 12. Thereafter, the resin film 13 stayed between the heat-resistant plate glasses 11 and 12 was turned black in 20 minutes from the start of heating, and in that state, the heating was continued up to 60 minutes. As a result, no harmful deformation or the like occurred in the first and second heat-resistant glass sheets 11 and 12, and the penetration of the flame could be prevented without causing breakage, and the test judgment passed.

  A fireproof safety glass having a structure similar to that of the fireproof safety glass 10 shown in FIG. 1 was prepared by placing a patterned fluororesin film with a thin white Japanese paper pattern between transparent heat-resistant plate glasses. A fire safety glass window constructed with the same structure as the fire safety glass window 50 shown in FIG. 4 using this fire safety glass exhibits a thin white Japanese paper pattern appearance with a depth that has never existed in the past. became.

The fire safety safety glass (not shown) of Example 3 is made of a heat-resistant crystallized glass (Nippon Electric Glass Co., Ltd. name: Firelight) that is transparent and has a thermal expansion coefficient of −2 × 10 ⁻⁷ / K. A first heat-resistant plate glass having a size of 1200 × 2400 × 4 mm similar to the fireproof safety glass 10 shown in FIG. 1 and a heat-resistant tempered glass having the same size and a transparent thermal expansion coefficient of 88 × 10 ⁻⁷ / K ( Nippon Sheet Glass Co., Ltd. name: Pyroclear) is made of laminated glass bonded together via a resin layer made of an ultraviolet curable resin mainly composed of epoxy acrylate. The heat-resistant aluminum glass cloth tape has a heat-resistant aluminum glass cloth tape having a heat-resistant flat glass that extends from the end face of the short side of 1200 mm to the bottom frame of the laminated glass to the height of 800 mm from the lower side of the side surface including the corners on both sides. It is sealed with a heat resistant sealing material comprising The fireproof safety glass of Example 3 is characterized by using heat-resistant tempered glass, which is cheaper and stronger in-plane strength than those using heat-resistant crystallized glass on both sides. It is possible to provide fire safety glass that is superior in price and strength performance.

  When manufacturing the fire safety safety glass of Example 3, first, an ultraviolet curable resin mainly composed of epoxy acrylate is applied over the entire surface of the first heat resistant plate glass, and the second heat resistant glass is applied on the ultraviolet curable resin. Tempered glass is arranged to form a laminate. Next, the ultraviolet curable resin in the laminate is cured by irradiating ultraviolet rays at room temperature using an ultraviolet irradiation device to form a laminated glass. The above-mentioned heat-resistant aluminum glass cloth tape is formed from the end face of the short side of 1200 mm arranged below the laminated glass and the opening portion of the heat-resistant plate glass extending from the lower side of the side surface including the corners to the height of 800 mm. It seals with the heat resistant sealing material which consists of.

 In addition, in the said embodiment, although the example using the laminated glass of heat resistant crystallized glass and the laminated glass of heat resistant crystallized glass and heat-resistant tempered glass was shown, the low expansion | extension fire-proof glass which consists of borosilicate glass, Laminated glass may be used.

 The present invention can provide a laminated glass window in which the resin melt does not flow out from the end face below the laminated glass into the lower frame of the construction frame when the resin layer between the laminated glass sheets is melted.

DESCRIPTION OF SYMBOLS 10 Fire safety glass 10a Laminated glass 10b Lower end surface 10c, 10d Corner part 10e, 10f Both-ends end surface 10g End surface area | region 11 and 12 Heat-resistant plate glass 13 Resin film (resin layer)
14 Laminated body 15 Vacuum packing 16 Autoclave device 17, 18 Heat resistant sealing material 40 Window frame 40 a Lower frame 50 Fireproof safety glass window

Claims (9)

  A heat-resistant sealing material comprising a laminated glass in which a plurality of heat-resistant plate glasses are bonded to each other via a resin layer, and an end face of the laminated glass covering a region corresponding to 1/6 or more of the total height and less than 1/2 Fireproof safety glass characterized by being continuously sealed by The fireproof safety glass according to claim 1, wherein the heat-resistant plate glass is made of heat-resistant crystallized glass having a linear expansion coefficient of -10 x ^10-7 / K or more and 10 x ^10-7 / K or less.   The resin layer is made of polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (PET), polycarbonate (PC), acrylic, ultraviolet curable resin, or a chain molecule The fireproof safety glass according to claim 1 or 2, wherein the fireproof safety glass is made of a fluororesin having a structure, and the thickness of the resin layer is 0.2 mm or more and 2 mm or less.   The fireproof safety glass according to claim 3, wherein the resin layer is a translucent resin film or a transparent resin film.   The fireproof safety glass according to any one of claims 1 to 4, wherein the heat resistant sealing material is a heat resistant tape.   A plurality of heat-resistant glass sheets are bonded to each other through a resin layer to form a laminated glass, and the end faces of the laminated glass are sealed in a heat-resistant manner over an area corresponding to 1/6 or more of the total height and less than 1/2. A method for producing fireproof safety glass, characterized by being continuously sealed with a material.   A thermoplastic resin is arranged over the entire surface of the first heat-resistant plate glass, a second heat-resistant plate glass is arranged on the resin to form a laminate, and a vacuum packing is attached around the laminate, The fireproof according to claim 6, wherein the laminated glass is formed by heating and pressurizing the laminated body while maintaining a reduced pressure by using an autoclave device, and thermocompression bonding the first and second heat-resistant plate glasses. Safety glass manufacturing method.   An ultraviolet curable resin is applied over the entire surface of the first heat-resistant plate glass, a second heat-resistant plate glass is disposed on the ultraviolet curable resin to form a laminate, and then laminated using an ultraviolet irradiation device. The method for producing fireproof safety glass according to claim 6, wherein the laminated glass is formed by curing an ultraviolet curable resin in the body. An end portion of a region sealed with the heat-resistant sealing material of the fire safety glass according to any one of claims 1 to 5 is installed below the construction frame. Construction method.