JP2014152050A - Fireproof safety glass plate, fireproof safety glass window, and method for manufacturing fireproof safety glass plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fireproof safety glass plate which can effectively prevent gas generated from a resin layer and a liquidized resin from filling a space between two glass plates in the case of a fire to cause explosion, can effectively prevent the glass plate from being damaged in the case of the fire, and can effectively prevent flame from occurring in a non-heating side in the case of the fire.SOLUTION: In a fireproof safety glass plate 1 in which two glass plates 11 and 11 are bonded to each other by a resin, at least one glass plate out of the two glass plates 11 and 11 has a communication portion 6 for communicating an adhesive surface side and an outer surface side.

Description

  The present invention relates to a fire safety glass plate, a fire safety glass window, and a fire safety glass plate manufacturing method in which two glass plates are bonded together with a resin.

  In recent years, as the number of department stores, commercial facilities such as supermarkets, public buildings such as city halls, hospitals, and station buildings, and large buildings such as large office buildings have increased, fire prevention that blocks fire and smoke during fires and minimizes the spread of fire With regard to the function of the door, fire prevention equipment and specific fire prevention equipment that have been certified by the Ministry of Land, Infrastructure, Transport and Tourism are on the market, and their use frequency is increasing.

  Fire prevention equipment is Article 109-2 of the Building Standards Law Enforcement Ordinance, “If fire is applied by a normal fire, it shall not emit a flame on surfaces other than the heating surface for 20 minutes after the start of heating. ". In addition, the specific fire prevention equipment is defined in Article 112, Paragraph 1 of the Building Standards Law Enforcement Ordinance as “the fire prevention equipment, and when a normal fire flame is added to it, the heating surface for one hour after the start of heating. It has the ability not to emit a flame on any other surface. " In order to receive these certifications, it is necessary to pass a test by an evaluation testing organization designated by the Ministry of Land, Infrastructure, Transport and Tourism.

  For example, Patent Documents 1 and 2 disclose a fire safety glass in which two crystallized glasses are bonded together with a resin film as a fire safety glass used in the above-described fire prevention equipment or specific fire prevention equipment. The techniques described in Patent Documents 1 and 2 are designed to improve the function as a fireproof glass in a fire and the function as a safety glass in a normal time by devising the structure of a resin film, or in the production of fireproof safety glass. It is intended to solve problems and quality problems.

  Patent Document 3 describes fire safety safety glass in which the lower end face of the laminated glass is continuously sealed with a heat resistant sealing material. The technology described in Patent Document 3 says that the resin film between the glass sheets of the laminated glass melts in the initial stage at the time of a fire, so that the flame is easily emitted from the lower side of the glass in the lower frame of the construction frame to the non-heated side. Focusing on the problems and the problem that when the size of the fireproof safety glass is large, the total amount of gas generated from the resin film in the event of a fire increases, and the probability that the glass sheet will explode and break increases. The lower end face is continuously sealed with a heat-resistant sealing material so that no flame is generated on the non-heated side when the resin film between the glass sheets melts in the initial stage of a fire. The heat-resistant plate glass is prevented from exploding due to the failure of gas to escape from the layer.

JP-A-4-224938 JP-A-8-132560 JP 2010-13338 A

  Since the fire safety glass described in Patent Documents 1 and 2 described above is obtained by laminating two crystallized glasses with a resin film, gas generated by melting the resin film in the event of a fire or liquefied resin is present. There is a problem that there is a high probability that the space between the glass plates is filled and the glass plates explode and break. However, the fire safety glass described in Patent Documents 1 and 2 described above does not have a structure that takes into account the explosion of the glass plate due to the gas generated from the resin film or the filling of the liquefied resin. The explosion of the glass plate due to the gas generated from the liquid and the filling of the liquefied resin could not be prevented.

  Moreover, in the fireproof safety glass described in Patent Document 3 described above, a structure is employed in which the lower end face of the laminated glass is continuously sealed with a heat resistant sealing material in order to prevent explosion of the heat resistant plate glass. ing. However, in the structure described in Patent Document 3, the gas generated by the melting of the resin film or a liquefied resin at the time of a fire escapes due to the presence of a sealing material or a heat-resistant sealing material between the construction frame. There was a problem that it was easy to lose and it was difficult to come out between the glass plates. Therefore, there is room for further improvement from the viewpoint of effectively preventing the explosion of the glass plate due to the gas generated from the resin film at the time of fire and the filling of the liquefied resin, and effectively preventing the breakage of the glass plate at the time of fire. there were. Further, in the structure described in Patent Document 3, for example, when the heat resistance of the sealing material is not sufficient or when the sealing material is damaged in the event of a fire, the liquefied resin leaks and the inside of the lower frame of the construction frame From the viewpoint of effectively preventing the occurrence of flames on the non-heating side during a fire, there is room for improvement.

  The object of the present invention is to effectively prevent the gas generated from the resin layer during the fire or the liquefied resin from being filled between the two glass plates and causing the glass plate to explode. An object of the present invention is to provide a fireproof safety glass plate, a fireproof safety glass window, and a method of manufacturing a fireproof safety glass plate that can effectively prevent the occurrence of a fire on the non-heating side during a fire.

  1st invention is a fire safety glass plate which bonded together two glass plates with resin, and at least one glass plate of the two glass plates has an adhesion surface side and an outer surface side. It has a communication part for making it communicate.

  According to the above configuration, the gas generated from the resin layer and the liquefied resin during a fire can be positively released to the outside from the communication portion. As a result, it is possible to effectively prevent the gas generated from the resin layer in the fire or the liquefied resin from filling between the two glass plates and causing the glass plate to explode, effectively damaging the glass plate in the event of a fire. Can be prevented. In addition, as a result of the gas generated from the resin layer and liquefied resin being released from the communication part to the outside in the event of a fire, the liquefied resin is difficult to leak into the lower frame of the work frame, and the liquefied resin is It becomes difficult to collect in the lower frame of the. Thereby, generation | occurrence | production of the flame on the non-heating side at the time of a fire can be prevented effectively.

  According to a second aspect of the present invention, in the fire safety glass plate according to the first aspect of the present invention, the communication portion is a communication hole for releasing gas generated from the resin layer or liquefied resin to the outside during a fire.

  According to the above configuration, the gas generated from the resin layer and the liquefied resin in the event of a fire can be actively released to the outside from the communication hole, and the gas generated from the resin layer and the liquefied resin in the event of a fire are two sheets. It can prevent effectively that a glass plate fills between glass plates and causes a glass plate to explode.

  According to a third invention, in the fire safety glass plate according to the first or second invention, the communication portion is formed on each of the two glass plates.

  According to the said structure, the gas and liquefied resin which generate | occur | produce from a resin layer at the time of a fire can be efficiently and reliably discharged | emitted from both the heating side and non-heating side of a fire prevention safety glass plate.

  According to a fourth invention, in the fire safety glass plate of the third invention, the two communicating portions of the two glass plates are formed so as to be displaced in a direction parallel to the plate surface.

  According to the said structure, it can avoid that two communicating parts penetrate in the plate | board thickness direction of a fire prevention safety glass plate, and can prevent effectively that the flame of a heating side ejects to a non-heating side via a communicating part.

  According to a fifth invention, in the fire safety glass plate according to any one of the first to fourth inventions, the communication portion is formed at a lower portion of the glass plate.

  According to the above configuration, the communication formed at the bottom of the glass plate by melting the pressure of the gas filling the top of the fire safety safety glass plate in the event of a fire and acting on the resin accumulated at the bottom of the fire safety safety glass plate It can be released from the outside. This makes it possible to quickly release the liquefied resin that melts in the fire and accumulates at the bottom of the fire safety glass plate by using the pressure of the gas that fills the top of the fire safety glass plate in the event of a fire. .

  According to a sixth aspect of the present invention, in the fire safety glass plate of the fifth aspect, the communication portion is formed at the lower end of the glass plate.

  According to the above configuration, the communication formed at the lower end of the glass plate is caused by the liquid pressure due to the weight of the resin that melts at the bottom of the fire safety safety glass plate and melts at the time of the fire on the resin stored at the lower end of the fire safety safety glass plate. It can be released from the outside. By using the liquid pressure of the liquefied resin that melted in the fire and collected in the lower part of the fire safety safety glass plate, the liquid resin that melted in the fire and accumulated in the lower part of the fire safety safety glass plate can be further removed. It can be quickly released to the outside.

  According to a seventh invention, in the fire safety glass plate according to any one of the first to sixth inventions, the communication part is an annular communication part leaving a central part.

  According to the above configuration, it is possible to reduce the unevenness of the outer surface which becomes the design surface of the glass plate during non-heating while configuring so as to ensure a wide opening area of the communication portion at the time of fire, and the outer surface of the resin layer It can be made inconspicuous by closing it at the center.

  According to an eighth aspect of the present invention, in the fire safety glass plate according to any one of the first to seventh inventions, the communication portion can be closed when the fire safety glass plate is not heated, and the fire safety safety glass plate A sealing material capable of communicating the communication part during heating is attached to the glass plate.

  According to the above configuration, the communication portion can be hidden from view from the outside during non-heating while being configured to ensure the function of the communication portion during a fire.

  A ninth invention is a fire-safety safety glass window comprising any one of the fire-safety safety glass plates of the first to eighth inventions, and a frame body into which the fire-safety safety glass plate is fitted, and the communication portion Is formed on the exposed portion of the fire safety glass plate into which the frame is not fitted.

  According to the above configuration, the gas generated from the resin layer and the liquefied resin in the event of a fire can be reliably released to the outside from the communicating portion formed in the exposed portion without being blocked by the frame.

  According to a tenth aspect, in the fire safety glass window according to the ninth aspect, the communication portion is formed below the exposed portion.

  According to the above configuration, the liquefied resin that melts in the fire and accumulates at the bottom of the fireproof safety glass plate without being blocked by the sealing material that seals the lower frame and the glass plate or the upper edge of the lower frame can be quickly removed. Can be discharged outside.

  11th invention is a manufacturing method of the fire safety glass plate which manufactures any one fire protection safety glass plate of the said 1st-8th invention, Comprising: Bonding which bonds the said 2 glass plate with resin And a communication part forming step of forming the communication part in a state where the resin layer at the communication part forming part is left after the bonding process.

  According to the said structure, a communication part can be formed in an exact position with respect to the two glass plates of the state bonded together with resin, leaving the resin layer of a communication part formation location.

It is explanatory drawing which shows the structure of the fire safety glass plate concerning this invention, (a) is a front view of a fire safety glass plate, (b) is sectional drawing in the XX position of (a). is there. It is explanatory drawing which shows the structure of the fire safety glass window concerning this invention, (a) is a front view of a fire safety glass window, (b) is sectional drawing in the YY position of (a). is there. It is detail drawing which shows the structure of the communicating hole which concerns on this invention, (a) is a front view of the communicating hole vicinity in the state which has not stuck the sealing material, (b) has stuck the sealing material. It is sectional drawing of the communication hole vicinity in the state which is not. It is the schematic which shows the structure of the communicating hole in another embodiment.

[Structure of fireproof safety glass plate]
FIG. 1 is an explanatory view showing the structure of a fire safety glass plate 1 according to the present invention, (a) is a front view of the fire safety glass plate 1, and (b) is an XX of (a). It is sectional drawing in a position. As shown in FIGS. 1A and 1B, the fireproof safety glass plate 1 is a glass laminate that is laminated by attaching two glass plates 11 and 11 with a resin film 12. It is preferable that the glass plate 11 is comprised from glass with a small coefficient of thermal expansion. By using a glass having a small coefficient of thermal expansion, that is, hardly thermally expanded, the risk of breakage due to thermal shock can be reduced even when a sudden temperature change occurs in the fireproof safety glass plate 1 in the event of a fire. The thermal expansion coefficient of the glass plate 11 is preferably an average linear expansion coefficient of −10 to 10 × 10 ⁻⁷ / K in a temperature range of 30 to 750 ° C. The resin film 12 includes phenol resin (PF), epoxy resin (EP), melamine resin (MF), urea resin (urea resin, UF), unsaturated polyester resin (UP), alkyd resin, polyurethane resin (PUR). ), Thermosetting resins such as thermosetting polyimide (PI), vinyl acetate resin, vinyl chloride resin, ethylene-vinyl acetate copolymer (EVA), fluororesin (THV), polyvinyl butyral resin (PVB), polyvinyl alcohol Examples thereof include thermoplastic resins such as resin (PVA), and other ultraviolet curable resins. Among these resins, THV resin, EVA resin, and PVB resin are preferable because they are excellent in cost and adhesiveness.

  The fireproof safety glass plate 1 has a laminated state in which a resin film 12 is sandwiched between two glass plates 11 and 11 and is heated by heating means such as an autoclave (not shown) to fuse the resin film 12. The two glass plates 11 and 11 and the resin film 12 are integrated. This production process is a bonding process in which the two glass plates 11 and 11 are bonded together by the resin film 12.

  As shown in FIG. 1A, the lower end surface of the fire safety glass plate 1 is continuously sealed with a heat resistant sealing material 13. That is, after the bonding process of bonding the two glass plates 11, 11, the lower end surface of the fire safety glass plate 1 and the lower portions of the left and right sides of the fire safety glass plate 1 are continuously formed by the sealing material 13. Sealed. Thereby, it can prevent effectively that the resin film 12 which melted at the initial stage at the time of a fire with the sealing material 13 leaks out from the lower part of the fire prevention safety glass plate 1, and the leaked resin is under the frame 2 mentioned later. It is possible to effectively prevent a flame from being accumulated in the frame 2b and the like on the non-heating side. As the sealing material 13, only the thickness direction center part (near the edge part of the resin film 12) of the end surface of the fireproof safety glass plate 1 may be sealed with a heat resistant sealing material or a belt-shaped heat resistant tape. However, as shown in FIG.1 (b), the heat resistant tape affixed in the U shape over the end surface and both plate | surfaces of the fire safety glass plate 1 is preferable. Examples of the heat resistant tape include a heat resistant aluminum cloth tape made of a composite material having heat resistance and strength.

  The height B from the lower side where the sealing material 13 is attached to the left and right end faces of the fire safety glass plate 1 is preferably 1/6 or more of the total height A of the fire safety glass plate 1 and less than 1/2. It is more preferable that it is ¼ or more of the total height A of the fireproof safety glass plate 1 and less than １. Thereby, it can prevent effectively that the resin film 12 fuse | melted by the sealing material 13 at the initial stage at the time of a fire leaks out from the lower part of the fire prevention safety glass plate 1. FIG.

[Fireproof safety glass window structure]
FIG. 2 is an explanatory view showing the structure of the fire safety glass window M according to the present invention, (a) is a front view of the fire safety glass window M, and (b) is YY of (a). It is sectional drawing in a position. As shown to Fig.2 (a), the fire safety glass window M is provided with the fire safety glass plate 1 mentioned above, and the frame 2 fitted over the perimeter of the outer periphery part of the fire safety glass plate 1. FIG. . The frame 2 includes an upper frame 2a fitted on the upper side of the fire safety glass plate 1, a lower frame 2b fitted on the lower side of the fire safety glass plate 1, and side frames 2c fitted on the left and right sides of the fire safety glass plate 1. 2c. The dimensions (vertical × horizontal) of the frame body 2 exemplified in this embodiment are 2450 mm × 1250 mm for the outer dimension and 2400 mm × 1200 mm for the inner dimension. The upper frame 2a, the lower frame 2b, and the side frames 2c, 2c are made of a long metal material having a U-shaped cross-sectional shape, and a groove portion into which each side of the fire-safety safety glass plate 1 is fitted. Is formed. As the material of the frame body 2, various metal materials such as an aluminum material and a steel material can be used, but a steel plate hollow material subjected to rust prevention processing such as galvanization is preferable.

  The frame 2 is attached to the fire safety glass plate 1 by the following procedure, for example. First, the lower frame 2b and the side frames 2c, 2c are combined so as to match the shape of the fire safety glass plate 1, and the fire safety glass plate 1 is slid along the groove inside the lower frame 2b and the side frames 2c, 2c. The three sides of the fireproof safety glass plate 1 are fitted into the lower frame 2b and the side frames 2c, 2c. In this case, a pair of left and right setting blocks 3 and 3 are interposed between the end surface of the lower side of the fire safety glass plate 1 and the groove portion of the lower frame 2b. The pair of left and right setting blocks 3 and 3 are disposed at the right and left middle part of the right half part of the lower frame 2b and the left and right middle part of the left half part of the lower frame 2b so that the fire safety glass plate 1 can be stably supported. The Moreover, between the lower end part of the setting block 3 and the fire safety glass plate 1 and the groove part of the lower frame 2b, and between the right and left end parts of the fire safety glass plate 1 and the groove parts of the side frames 2c and 2c, Fillers 4 and 4 made of foamed polyvinyl chloride, ceramic fiber blanket or the like are interposed over their entire length. Next, the frame 2 is attached to the fire safety glass plate 1 by fitting the upper frame 2 a into the upper side of the fire safety glass plate 1. Also in this case, the fillers 4 and 4 are interposed over the entire length between the upper end portion of the fireproof safety glass plate 1 and the groove portions of the side frames 2c and 2c. A sealing material 5 such as waterproof silicone is caulked around the entire periphery of the clearance between the fire safety glass plate 1 and the grooves of the upper frame 2a, the lower frame 2b, and the side frames 2c and 2c. Filled with a gun or the like. Note that the upper frame 2a, the lower frame 2b, and the side frames 2c and 2c are connected and fixed at their ends by welding or the like when the frame body 2 is attached or after attachment.

[Connection hole structure]
FIG. 3 is a detailed view showing the structure of the communication hole 6 according to the present invention. FIG. 3A is a front view of the vicinity of the communication hole 6 in a state where the sealing material 7 is not pasted, and FIG. It is sectional drawing of the communication hole 6 vicinity in the state which has not stuck the sealing material 7. FIG. As shown in FIGS. 3 (a) and 3 (b), the left and right central portions of the lower end portions of the two glass plates 11, 11 of the fire safety glass plate 1 are connected to the adhesive surface side and the fire protection by the resin film 12. One communication hole 6 is formed for communicating with the outer surface side which is the outer surface of the safety glass plate 1. By forming the communication holes 6 and 6 at the lower end of the glass plate 11, the pressure of the gas filling the upper part of the fire safety glass plate 1 in the event of a fire and the resin film that melts in the fire and accumulates in the lower part of the fire safety glass plate 1 By utilizing the hydraulic pressure of 12, the resin film 12 melted at the time of a fire can be quickly and reliably discharged to the outer surface side of the glass plate 11. Further, by forming the communication holes 6 and 6 in the left and right central portions of the glass plate 11, the resin film 12 melted at the time of fire from the left and right central portions of the glass plate 11 whose temperature is likely to rise at the time of fire is transferred to the outer surface side of the glass plate 11. Can be released quickly.

  The communication hole 6 formed in one glass plate 11 of the two glass plates 11 and 11 and the communication hole 6 formed in the other glass plate 11 are located on the center line CL in the left-right direction of the fireproof safety glass plate 1. On the other hand, they are formed in a state where they are lined up on the left and right at symmetrical positions. That is, the two communication holes 6, 6 are formed so as to be displaced in the left-right direction parallel to the plate surface so as not to overlap entirely or partially in the thickness direction of the glass plate 11. This prevents the two communication holes 6 and 6 from penetrating in the thickness direction of the fire safety safety glass plate 1 in the event of a fire, and the heating-side flame is jetted to the non-heating side through the communication holes 6 and 6. Can be effectively prevented. Specifically, for example, if the right side of the glass plate 11 on the right side of FIG. 3B is on the heating side, the flame generated on the heating side is the glass plate 11 on the back side of the communication hole 6 on the right side of the page (paper surface). The hand going to the glass plate 11) on the left side is obstructed, and it is difficult for the left side of the glass plate 11 on the left side of the paper to be ejected.

  The separation distance at which the two communication holes 6 and 6 are separated from each other left and right, that is, the separation distance W between the end of the one communication hole 6 on the center line CL side and the end of the other communication hole 6 on the center line CL side is fire. Even when the two glass plates 11, 11 are displaced in a direction parallel to the plate surface due to melting of the resin film 12 or deformation of the frame body 2, the communication holes 6, 6 are not connected to the glass plate 11. A distance that does not overlap in the plate thickness direction is preferable, for example, preferably not less than the thickness of the resin film 12 and more preferably not less than the plate thickness of the glass plate 11 (for example, 10 mm). This ensures a long separation distance W between the end portions of the communication holes 6, 6, making it difficult for the heating-side flame to enter the non-heating-side communication hole 6, so that the heating-side flame passes through the communication holes 6, 6. It is possible to more effectively prevent jetting to the non-heating side. The separation distance W between the two communication holes 6 and 6 is preferably set so that the two communication holes 6 and 6 are positioned at the left and right central portions of the glass plate 11 where the temperature easily rises in the event of a fire. Is preferably set so that the two communication holes 6 and 6 are positioned between the pair of left and right setting blocks 3 and 3.

The communication holes 6 and 6 have a circular or disk-shaped central portion 6A adhered to the resin film 12 and have an annular shape when viewed from the front, and the three-dimensional shape of the glass plate 11 in the plate thickness direction. It is formed in a donut shape (thick annular shape) or a cylindrical shape. Since the outer shape of the communication hole 6 is formed in a circular shape, the communication hole 6 can be easily processed, and stress concentration at the position where the communication hole 6 is formed is avoided, so that the communication hole 6 is formed on the glass plate 11. It can be prevented from causing cracks. Further, by leaving the columnar or disk-shaped central portion 6A, it is possible to ensure a wide opening area of the communication hole 6 at the time of heating, while the outer surface serving as the design surface of the glass plate 11 at the time of non-heating. The unevenness can be suppressed small, and the exposed surface of the resin film 12 can be blocked by the central portion 6A so as to be inconspicuous. When the resin film 12 melts in the event of a fire, the central portion 6A adhered to the resin film 12 is detached from the adhesive film 12 and falls off due to its own weight, the fluid pressure of the melted resin film 12, or the like. The opening area of the communication hole 6 in a state in which the central portion 6A is detached at the time of a fire is preferably an area where the melted resin film 12 can be quickly discharged to the outside and the strength of the glass plate 11 is not significantly reduced. In view, it is preferably 0.2 cm ² or more, and more preferably 0.5 cm ² or more (for example, 1 cm ² ). In addition, since the opening area of the communicating hole 6 in a state where the central portion 6A is detached at the time of a fire contributes to a decrease in the strength of the glass plate 11 as described above, it is preferably 4 cm ² or less. .

  The communication holes 6 and 6 are cut from the outer surface side of the glass plate 11 toward the bonding surface side by a cylindrical cutting tool such as a hole saw on the fireproof safety glass plate 1 obtained by bonding the two glass plates 11 and 11 together. It is formed by processing. In this case, the cutting process is performed so that the resin film 12 is not damaged or the resin film 12 is not perforated. That is, after the bonding step of bonding the two glass plates 11 and 11 with the resin film 12, the two communication holes 6 and 6 are formed in a state where the resin film 12 at the communication hole 6 formation portion is left. This forming process is a communication part forming process for forming the communication holes 6 and 6. As a result, the two communication holes 6 and 6 are formed at an accurate position with respect to the fireproof safety glass plate 1 in a state where the two glass plates 11 and 11 are bonded together while leaving the resin film 12 where the communication holes 6 are formed. can do. In addition, it is possible to easily form the annular communication hole 6 in a state in which the center portion 6A remains by simply performing the cutting process, and it is possible to make it difficult to remove the center portion 6A by reliable bonding in the bonding process. .

  The communication part forming step may be performed before attaching the frame 2 to the fire safety glass plate 1 or after attaching the frame 2 to the fire safety glass plate 1. When the communication part forming step is performed after the frame 2 is attached to the fire safety glass plate 1, it becomes possible to perform cutting with high accuracy in a state where the fire safety glass plate 1 is stably supported by the frame 2. Moreover, although not shown in figure, you may perform a communicating part formation process before a bonding process. Specifically, for example, a circular hole is previously formed at a predetermined position of each of the two glass plates 11 and 11, and the two glass plates 11 and 11 having the circular holes are bonded together. It may be configured. In this case, a columnar or disk-shaped cutting piece generated at the time of forming the circular hole or a previously processed columnar or disk-shaped glass piece is bonded or pasted when the two glass plates 11 and 11 are bonded together. You may affix on the center part of a circular hole after matching.

  As shown in FIG. 3 (b), the communication holes 6, 6 are formed in the lower part of the exposed portion exposed outside the fire safety safety glass plate 1 into which the frame body 2 is not fitted, that is, the lower frame 2 b constituting the frame body 2. Is formed in an exposed portion that is separated from the upper end side by a predetermined distance H. The predetermined distance H may be about several millimeters as long as the communication hole 6 is not completely or partially blocked by the sealing material 5, but is preferably 1 cm or more, preferably 2 cm or more. More preferably (for example, 3 cm). Thereby, the resin film 12 melted at the time of a fire can be efficiently discharged from the communication hole 6 to the outside of the lower frame 2b without being blocked by the sealing material 5 and the upper end side of the lower frame 2b. If the predetermined distance H is too long, the communication holes 6 and 6 may move away from the lower end of the glass plate 11 and melt in a fire, and the liquefied resin film 12 may not be easily released from the communication holes 6 and 6. Therefore, it is preferably 1/4 or less of the total height A of the fire safety glass plate 1, and more preferably 10 cm or less.

  As shown in FIGS. 2 (a) and 2 (b), the outer surface of the two glass plates 11 and 11 can close the communication hole 6 when the fire safety safety glass plate 1 is not heated, and is fire safety safety. A sealing material 7 capable of communicating with the communication hole 6 when the glass plate 1 is heated is attached. The sealing material 7 is composed of a strip-shaped nameplate seal that has an adhesive surface on the glass plate 11 side that is difficult to peel off at room temperature and is easily peeled off by heat, and is printed with a certification number, product number, product name, manufacturer name, etc. on the outer surface side. Has been. Thereby, it is possible to conceal the communication hole 6 from the outside by effectively utilizing the nameplate seal that displays the product number and the like, while ensuring the function of the communication hole 6 during heating. In this case, both the sealing material 7 that closes one communication hole 6 of the two communication holes 6 and 6 and the sealing material 7 that closes the other communication hole 6 are on the center line CL in the left-right direction of the fire safety glass plate 1. Since they are attached so as to be symmetrical with respect to the left and right, the two sealing materials 7 and 7 overlap each other when viewed through a transparent glass plate, and the appearance is improved.

  As described above, by configuring the fireproof safety glass plate 1 having the communication holes 6, 6, in the event of a fire, the sealing material 7 is peeled off by heat, the resin film 12 is melted, and the central portion 6 </ b> A is separated from the resin film 12. Peel off and fall off. And the resin film 12 which melted at the time of a fire is discharge | released outside from the opening of the communicating holes 6 and 6 in the state which center part 6A removed. In this case, since the lower end face of the fire safety glass plate 1 is continuously sealed by the sealing material 13, the resin accumulated in the lower portion of the fire safety glass plate 1 is the lower frame 2b and the side frames 2c, 2c. Without leaking out to the lower part of the air, it is expelled to the outside vigorously from the opening of the communication holes 6 and 6 in a state where the central part 6A is detached. Thereby, the liquefied resin generated from the resin film 12 in the event of a fire can be efficiently and reliably discharged to the outside from the communication portions 6 and 6, and the gas generated from the resin film 12 or the liquefied resin in the event of a fire Can be effectively prevented from being filled between the two glass plates 11 and 11 and causing the glass plates 11 and 11 to explode.

[Another embodiment]
(1) In the said embodiment, although the example which comprised the communicating part by the communicating hole 6 was shown, if it is a communicating part for connecting the adhesion surface side and outer surface side of the glass plate 11, it will not restrict to a hole, For example, it may be a notch or the like in which the edge or corner of the glass plate 11 is notched inward.

(2) The communication hole 6 shown in the above embodiment is shown as an example of a communication part, and if it can communicate the adhesion surface side and the outer surface side of the glass plate 11 at the time of a fire, it is not heated. It may be a communicating portion that is not visible at times and appears to be closed. Specifically, for example, the outer shape of the center portion 6A shown in the above embodiment is formed to be the same as or substantially the same as the outer shape of the communication hole 6, and the center portion 6A is fitted into the communication hole 6 without a gap. Then, it may be configured such that the center portion 6A is detached during a fire and the bonding surface side and the outer surface side of the glass plate 11 communicate with each other.

(3) In the above embodiment, the example in which the communication hole 6 is formed so that the columnar or disk-shaped center portion 6A adhered to the resin film 12 remains is shown. However, as shown in FIG. You may form the column-shaped or disk-shaped communicating hole 6 which does not leave the part 6A. Also in this case, like the above (2), the communication part may be completely or substantially completely blocked when not heated. Specifically, for example, the sealing material 7 is affixed to the outer surface of the glass plate 11, and the sealing material 7 is peeled off during a fire so that the adhesive surface side and the outer surface side of the glass plate 11 communicate with each other. Good. Alternatively, the communication hole 6 may be filled with a caulking material or the like that melts in the event of a fire, and the caulking material or the like may melt in the event of a fire so that the bonding surface side and the outer surface side of the glass plate 11 communicate with each other.

(4) In the above embodiment, the communication hole 6 is formed so that the shape in front view is an annular shape, and the three-dimensional shape is a donut shape or a cylindrical shape. However, the communication hole 6 is different as the annular communication hole 6. You may employ | adopt a shape communicating hole. Specifically, for example, as shown in FIG. 4B, a communication hole 6 having a rectangular annular shape when viewed from the front may be employed. Although not illustrated, the shape when viewed from the front is a polygon. Alternatively, the communication hole 6 may be an elliptical or star-shaped ring. In this case, the three-dimensional shape of the center portion 6A may be formed in a shape matching the shape of the communication hole 6 (for example, a prismatic shape in the case of FIG. 4B), or a shape different from the shape of the communication hole 6. It may be formed.

(5) In the above embodiment, the example in which the two communication holes 6 and 6 are formed so as to be displaced in the left-right direction has been shown, but the two communication holes 6 and 6 are parallel to the plate surface of the glass plate 11. If they are misaligned, they may be misaligned in different directions. Specifically, for example, as shown in FIG. 4 (c), the two communication holes 6 and 6 may be displaced in the vertical direction. As shown in FIG. The communication holes 6 and 6 may be displaced in the vertical and horizontal directions.

(6) In the above embodiment, an example in which the two communication holes 6 and 6 are formed in the left and right central portions of the glass plate 11 has been shown. However, as shown in FIG. Alternatively, it may be formed at the left corner or the right corner of the lower portion of the glass plate 11. Moreover, in the said embodiment, although the two communication holes 6 and 6 were formed in the lower end part of the glass plate 11, the two communication holes 6 and 6 were set in the position which is different with respect to the glass plate 11 in the up-down direction. It may be formed. Specifically, for example, although not shown, the two communication holes 6 and 6 may be formed in the upper part of the glass plate 11 or the upper and lower intermediate parts, and may be formed in places other than the lower end part of the lower part of the glass plate 11. Also good. By forming the two communication holes 6 and 6 on the upper side of the glass plate 11, the gas filling the upper portion of the fire safety glass plate 1 can be released to the outside in the event of a fire. In addition, by forming the two communication holes 6 and 6 on the upper side and the lower side of the glass plate 11, the gas filling the upper portion of the fire safety glass plate 1 in the event of a fire and the lower portion of the fire safety glass plate 1 melting in the event of a fire Both of the resin accumulated in the resin can be discharged to the outside.

(7) In the above-described embodiment, an example in which one communication hole 6 is formed in each of the two glass plates 11 and 11, but the number of the communication holes 6 formed in one glass plate 11, The number of communication holes 6 formed in the other glass plate 11 may be varied. Specifically, for example, as shown in FIG. 4 (f), even if one communication hole 6 is formed in one glass plate 11 and two communication holes 6, 6 are formed in the other glass plate 11. Good. In this case, by increasing the number of the communication holes 6 on the heating side, the resin that has melted in the event of a fire and accumulated in the lower part of the fireproof safety glass plate 1 can be efficiently discharged from the heating side to the outside.

(8) In the above embodiment, an example in which the communication hole 6 is formed in each of the two glass plates 11, 11 is shown, but the communication hole 6 is formed only in one of the two glass plates 11, 11. It may be formed. In this case, the communication hole 6 may be formed only on the heating side of the fire safety glass plate 1, or the communication hole 6 may be formed only on the non-heating side of the fire safety glass plate 1.

(9) In the above-described embodiment, the seal material 7 is configured by the nameplate seal on which the authorization number is printed on the outer surface side. However, the plain material or the pattern with the authorization number etc. not printed on the outer surface side is shown. You may comprise with a seal. In this case, one of the two sealing materials 7 and 7 may be constituted by a nameplate seal, and the other may be constituted by a plain or patterned seal, and both of the two sealing materials 7 and 7 may be plain or patterned. You may comprise with a seal. Further, the outer shape of the sealing material 7 is not limited to the belt-like shape shown in the above embodiment, but may be a different shape such as a disk shape or an elliptical shape. Moreover, as long as the sealing material 7 has the same function, for example, a material in which the communication hole 6 is filled with a caulking material that melts in a fire may be used. The sealing material 7 is not an essential configuration and can be omitted as appropriate.

(10) In the said embodiment, although the fireproof safety glass plate 1 showed the example comprised by what bonded together the two glass plates 11 and 11 with the resin film 12, two glass plates 11 and 11 were shown. You may employ | adopt a different form as a form bonded together by resin. Specifically, for example, although not shown, a resin film 12, a plate-shaped resin plate that is not fused even when heated by an autoclave or the like, and a resin film 12 between two glass plates 11 and 11. It may be sandwiched and bonded in order. In this case, if the resin plate has fire resistance, the fire resistance can be improved as compared with the case where the two glass plates 11 and 11 are bonded together with the resin film 12. Here, a fluororesin board etc. are mentioned as a resin board provided with the fireproof characteristic. In addition, although not shown in figure, you may comprise the fire prevention safety glass plate 1 by what bonded together 3 or more glass plates 11, 11, ... with resin.

(11) In the above embodiment, the lower end face of the fire safety glass plate 1 is continuously sealed with the sealing material 13, but the lower end face of the fire safety glass plate 1 is partially sealed. A structure that is sealed with a material 13 (for example, a structure that seals only a portion of the lower end face of the fire safety glass plate 1 excluding the location where the setting blocks 3 and 3 are arranged), or a lower part of the fire safety glass plate 1 You may employ | adopt the structure which does not seal an end surface with the sealing material 13. FIG.

(12) The shape, size, and the like of the fire safety glass plate 1 shown in the above embodiment are shown as an example, and although not shown, a horizontally long fire safety glass plate or a circular or elliptic fire safety glass plate The present invention can be similarly applied to fireproof safety glass plates having different shapes, fireproof safety glass plates having a small size, and the like.

  Fireproof safety glass plates and fireproof safety glass windows according to the present invention are provided in department stores, supermarkets and other commercial facilities, city halls, hospitals, public facilities such as station buildings, and private facilities such as large office buildings. Can be used as

1 Fireproof safety glass plate 2 Frame 2b Lower frame 6 Communication hole (communication part)
6A Center 7 Sealing material 11 Glass plate 12 Resin film M Fireproof safety glass window

Claims (11)

It is a fire safety safety glass plate in which two glass plates are bonded with resin,
At least one of the two glass plates is a fire-safety safety glass plate having a communication portion for communicating the bonding surface side and the outer surface side.   2. The fire safety glass plate according to claim 1, wherein the communication part is a communication hole that releases gas generated from the resin layer or liquefied resin to the outside during a fire.   The fireproof safety glass plate according to claim 1 or 2, wherein the communication portion is formed on each of the two glass plates.   The fire safety safety glass plate according to claim 3, wherein the two communicating portions of the two glass plates are formed so as to be displaced in a direction parallel to the plate surface.   The fireproof safety glass plate according to any one of claims 1 to 4, wherein the communication portion is formed at a lower portion of the glass plate.   The fire safety glass plate according to claim 5, wherein the communication portion is formed at a lower end portion of the glass plate.   The fire-safety safety glass plate according to any one of claims 1 to 6, wherein the communication part is an annular communication part leaving a central part.   A sealing material capable of closing the communication portion when the fireproof safety glass plate is not heated and allowing the communication portion to communicate when the fireproof safety glass plate is heated is attached to the glass plate. Fireproof safety glass plate as described in any one of -7. A fire safety glass window comprising the fire safety glass plate according to any one of claims 1 to 8, and a frame body into which the fire safety glass plate is fitted,
A fire safety glass window, wherein the communication portion is formed in an exposed portion of a fire safety glass plate into which the frame is not fitted.   The fire safety glass window according to claim 9, wherein the communication portion is formed at a lower portion of the exposed portion. It is a manufacturing method of the fire safety glass plate which manufactures the fire safety glass plate according to any one of claims 1 to 8,
A fireproof safety glass comprising a bonding step of bonding the two glass plates with a resin, and a communication portion forming step of forming the communication portion in a state where the resin layer of the communication portion forming portion is left after the bonding step. A manufacturing method of a board.

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