JP2012148966A - Glass plate with spacer and assembling method of double glazing window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass plate with a spacer and an assembling method of a double glazing window capable of assembling easily a double glazing window on a construction site.SOLUTION: A spacer 20 is bonded beforehand to a new glass plate 16 by butyl rubber 18, and butyl rubber 22 is bonded beforehand to the spacer 20, and a mold release paper tape 24 and a protective sheet 44 are bonded to the butyl rubber 22 detachably, to thereby produce glass plates 10, 40 with spacers. When assembling a double glazing window by carrying the glass plates 10, 40 with spacers from a factory to the construction site, the mold release paper tape 24 and the protective sheet 44 are removed from the butyl rubber 22, and the butyl rubber 22 is bonded to an existing glass window 14.

Description

  The present invention relates to a glass plate with a spacer and a method for assembling a multi-layer glass window.

  From the viewpoints of heat insulation and soundproofing properties, multiple glass is often used as a glass window. The multi-layer glass includes at least two glass plates and a spacer. The two glass plates are separated by a spacer, and both side surfaces of the spacer are bonded to the two glass plates by a primary sealing material. It is configured by sealing an edge portion between two glass plates with a secondary sealing material.

  By the way, in Patent Document 1, it is proposed to reconstruct the glass window into a multi-layer glass window by arranging a new glass plate in parallel with an existing single-plate glass window constructed in a building. ing. Advantages of using existing glass windows as part of double-glazed windows, reducing construction costs, shortening the construction period, eliminating the need to discard existing glass windows, and replacing sashes There is.

  In a construction method for attaching a new glass plate to an existing glass window, first, one side surface of a spacer in which a desiccant is sealed is bonded to the peripheral edge portion of the glass window with butyl rubber (primary sealing material). Next, a new glass plate is bonded to the other side surface of the spacer with butyl rubber (primary sealing material). Next, a sealing material (secondary sealing material) for maintaining the shape is placed in the gap at the edge between the existing glass window and the new glass plate. In accordance with this construction procedure, a multi-layer glass window was constructed.

Japanese Patent No. 4003908

  However, in the conventional method of assembling a multi-layer glass window, when a new glass plate is attached to an existing glass window, butyl rubber as a primary sealant is applied to both the existing glass window and the new glass plate at the construction site. Therefore, there is a problem that it takes time to assemble the multi-layer glass window at the construction site.

  This invention was made in view of such a situation, and it aims at providing the assembly method of the glass plate with a spacer which can assemble a multilayer glass window easily in a construction site, and a multilayer glass window. To do.

  In order to achieve the above object, the present invention provides that one side surface of the spacer is bonded to the inside of the peripheral portion of one surface of the glass plate via the first butyl rubber, and the other side surface of the spacer is Provided is a glass plate with a spacer, wherein a second butyl rubber is adhered, and a protective sheet is detachably adhered to the second butyl rubber.

  According to the present invention, the spacer is pre-adhered to the new glass plate with the non-moisture permeable first butyl rubber at the factory, and the non-moisture permeable second butyl rubber is pre-adhered to the spacer. A glass sheet with a spacer is produced by detachably attaching a protective sheet to the butyl rubber. When assembling the multi-layer glass window by bringing this glass plate with a spacer from the factory to the construction site, it is only necessary to remove the protective sheet from the second butyl rubber and bond the second butyl rubber to the existing glass window. . Therefore, by using the glass plate with a spacer of the present invention, it is possible to improve the adhesion quality problem due to butyl rubber and improve the assembly workability at the construction site. Can be easily assembled. The protective sheet may be large enough to cover the second butyl rubber, but may be large enough to cover the entire new glass plate.

  In the glass plate with a spacer of the present invention, it is preferable that a heat ray shielding film is formed on the one surface of the glass plate.

  According to the present invention, a glass plate having a heat ray shielding film (Low Emissivity: Low-E film) formed on the surface thereof can be used to improve the heat insulation and heat shielding properties of the multi-layer glass window. By introducing a new glass plate with a spacer with a heat-shielding film to the existing glass window installed at the site and attaching it to the existing glass window at the site, the exterior remains intact. It is possible to assemble multi-layer glass windows with excellent heat insulation and heat insulation. As the heat ray shielding film, in addition to the heat ray shielding film in which the first oxide film, the Ag film, and the second oxide film are laminated in this order, the heat ray shielding film itself is an oxide or nitride type heat ray shielding film. A membrane can be applied.

  The heat ray shielding film of the present invention is a heat ray shielding film in which a first oxide film, an Ag film, and a second oxide film are laminated in this order, and the protective sheet is formed on one surface of the glass plate. It is preferable that the second butyl rubber is detachably bonded so as to cover substantially the entire surface.

  The heat ray shielding film in which the first oxide film, the Ag film, and the second oxide film are laminated in this order is formed on one surface of the glass plate by a sputtering method. This laminated type heat ray shielding film has the advantage that the heat ray shielding film itself is superior to the heat ray shielding film of the type in which the heat ray shielding film itself is an oxide or nitride, but the heat ray shielding film itself is an oxide or nitride. It has a characteristic that it is more easily damaged than a certain type of heat ray shielding film. For this reason, the protective sheet is attached to the glass plate with the spacers attached in advance at the factory so as to cover the entire surface of one side of the glass plate on which the laminated type heat ray shielding film is formed before the shipment. Adhesively attach to butyl rubber. According to the glass plate with a spacer of the present invention, the protective sheet is removed immediately before the glass plate with a spacer is assembled at the construction site. Thereby, a glass plate with a spacer can be carried from the factory to the construction site without damaging the laminated heat ray shielding film.

  In the glass plate with a spacer of the present invention, it is preferable that a desiccant is sealed in a space sealed by one surface of the glass plate, the protective sheet, and the spacer. More preferably, the desiccant is adhered to the protective sheet so as not to contact the heat ray shielding film.

  A laminated heat ray shielding film of an oxide film, an Ag film, and a second oxide film has an Ag film that is weak against moisture (humidity), and thus deteriorates when exposed to the atmosphere. Therefore, in the present invention, since the desiccant is sealed in the space sealed by one surface of the glass plate, the protective sheet, and the spacer, the heat ray shielding film can be protected from moisture, and the multilayer glass window with the heat ray shielding film is provided. Performance and quality can be maintained.

  By the way, generally glass is stored in a container called a pallet with a small mouth down, stored and transported in an upright state, so even if the protective sheet is only the butyl surface, the glass loaded first Thus, a sealed space is formed between the spacer and the spacer. Even when the protective sheet in which the desiccant is not sealed in the sealed space is only the butyl surface, the oxide sheet, the Ag film, and the second oxide film are stacked in order to be stored on the pallet. Less time to expose the type of heat ray shielding film to the atmosphere.

  The said spacer of the glass plate with a spacer of this invention is comprised by the hollow type | mold material, and desiccant is enclosed in the interior space, The surface where the said spacers arrange | positioned along the four sides of the said glass plate oppose each other It is preferable that a moisture absorption window is formed on the substrate, and the moisture absorption window is sealed with a tape.

  When the desiccant enclosed in the spacer is exposed to the outside air during the conveyance of the glass plate with the spacer, the desiccant absorbs moisture, and the durability of the desiccant is deteriorated. Therefore, in the present invention, the moisture absorption window of the spacer is sealed with a tape, and the tape is peeled off from the spacer immediately before the glass plate with the spacer is attached to the existing glass window. Thereby, a desiccant can be kept fresh and durability of a multilayer glass window can be improved.

  According to this invention, it is preferable that the plate | board thickness of the said glass plate is 75% or more with respect to the plate | board thickness of the existing glass window to which this glass plate is attached.

  In order to achieve the above object, the present invention provides a process for preparing the glass plate with spacers of the present invention on site, and the glass plate with spacers from which the protective sheet and / or tape have been removed at the site. A bonding step of bonding to an existing glass window via a second butyl rubber, and a sealing step of sealing the periphery of the glass plate with the spacer and the glass window with a sealing material, A method for assembling a multi-layer glass window is provided.

  According to the present invention, a high-quality multilayer glass window can be easily assembled at a construction site.

  According to the method of assembling the glass plate with spacer and the multi-layer glass window of the present invention, the multi-layer glass window can be easily assembled at the construction site.

The perspective view of the glass plate with a spacer of 1st Embodiment The principal part enlarged side view which showed the manufacturing process of the glass plate with a spacer shown in FIG. The perspective view which showed the state just before attaching a glass plate with a spacer to a glass window The perspective view which showed the corner key which connects a spacer in a corner The perspective view of the glass plate with a spacer of 2nd Embodiment The principal part expanded sectional view of the glass plate with a spacer shown in FIG. Explanatory drawing with sponge rubber and setting block attached to bag Side view just before attaching a glass plate with a spacer to an existing glass window Explanatory drawing of pressing glass plate with spacer against glass window using roller Front view of double-glazed glass window seen from the indoor side Lower vertical section of multi-layer glass window Upper vertical section of double-glazed glass window Longitudinal sectional view of a multi-layer glass window showing the position of a conventional secondary seal Cross-sectional view of a multi-layer glass window with a modified secondary sealing material

  Hereinafter, preferred embodiments of a method of assembling a glass plate with a spacer and a multi-layer glass window according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is an overall perspective view of a glass plate 10 with a spacer according to the first embodiment. FIG. 2 is an enlarged side view of an essential part showing the manufacturing process of the glass plate 10 with a spacer in the order of (A) to (D).

  The glass plate 10 with the spacer is attached on the indoor side opening side of the existing glass window 14 fixed by being fitted into the glass window ridge 12 of the building as shown in the perspective view of FIG. It is a novel glass plate that forms a multi-layer glass window together with the window 14. A method for assembling the multi-layer glass window will be described later. Moreover, the glass plate 10 with a spacer may be attached to the outdoor opening side of the glass window 14.

  As shown in FIG. 2D, the glass plate 10 with a spacer is a rectangular glass plate 16, a non-breathable butyl rubber (first butyl rubber) 18, a spacer 20, a non-breathable butyl rubber (second butyl rubber) 22, And a release paper tape (protective sheet) 24. The glass plate 16 is smaller than the glass plate of the glass window 14 shown in FIG.

  First, as shown in FIGS. 2A and 2B, the manufacturing method of the glass plate with spacers 10 is formed inside the peripheral portion of one surface 16A of the glass plate 16 and along the outer periphery of the glass plate 16. One side surface 20 </ b> A of the spacer 20 assembled in FIG. Next, as shown in FIGS. 2C and 2D, butyl rubber 22 is bonded to the other side surface 20B of the spacer 20, and the release paper tape is attached to the surface where the butyl rubber 22 and the glass of the glass window 14 are in contact with each other. 24 is adhered. The release paper tape 24 is removed from the butyl rubber 22 immediately before the glass plate 10 with the spacer is attached to the glass window 14 (see FIG. 5). Thereby, the adhesive force of butyl rubber 22 is maintained until just before attaching glass plate 10 with a spacer to glass window 14.

  By passing through such a manufacturing process, the glass plate 10 with a spacer shown in FIG. 1 is manufactured in a factory. An example of the release paper tape 24 is a PET film. The spacer 20 is preferably black from the viewpoint of design.

  On the other hand, the Low-E film 26 is formed in the region inside the spacer 20 assembled in a frame shape on the one surface 16A of the glass plate 16 in order to improve the heat insulating property and heat shielding property of the multi-layer glass window. Is formed. As the Low-E film 26, a film in which the first oxide film, the Ag film, and the second oxide film are laminated in this order, and the type in which the heat ray shielding film itself is an oxide or a nitride are also applied. it can. In order to protect the Low-E film 26, a rectangular protective sheet that covers and protects the entire Low-E film 26 may be bonded to the butyl rubber 22 instead of the release paper tape 24.

  The spacer 20 is made of an aluminum hollow mold, and granular silica gel (desiccant) 28 is sealed in the internal space. Further, a moisture absorption window 30 is opened on the opposing surfaces of the four spacers 20, 20... Arranged along the four sides of the glass plate 16. Further, the moisture absorption window 30 is sealed with an adhesive tape 32. This adhesive tape 32 is removed from the spacer 20 immediately before assembling the glass plate 10 with a spacer to the glass window 14 at the construction site. Thereby, the silica gel 28 is maintained in a fresh state without being exposed to the atmosphere until the glass plate 10 with the spacer is assembled to the glass window 14.

  In FIG. 2A, the butyl rubber 18 is bonded to the glass plate 16 side. However, the spacer 20 may be bonded to the glass plate 16 by bonding the butyl rubber 18 to one side surface 20A of the spacer 20. Further, the butyl rubbers 18 and 22 may be bonded to both sides of the spacer 20 from the beginning. Moreover, in embodiment, although the normal plate glass of a single plate structure is illustrated as the glass plate 16, laminated glass, tempered glass, double strength glass, netted glass, heat ray absorption glass, heat ray reflective glass, etc. may be sufficient. . Furthermore, in order not to damage the glass plate 16 during handling of the glass plate 16, it is preferable to chamfer the corners of the glass plate 16 (for example, C chamfering etc.) and also chamfer the edge of the small edge surface.

  The spacers 20 are connected at respective corners by L-shaped corner keys (spacer joining members) 34 shown in FIG. The corner key 34 includes a main body block 34A and fitting portions 34B and 34B extending in a direction perpendicular to the main body block 34A. The two spacers 20 adjacent to the sawtooth portions of the fitting portions 34B and 34B, The two adjacent spacers 20 and 20 are connected to each other at right angles through the corner key 34 by being inserted into the internal space 20.

  Further, a through hole 34C is opened in the main body block 34A. The through hole 34C is formed from the outer end surface 34D to the inner end surface 34E of the main body block 34A, and is used as an air vent hole when the glass plate 10 with a spacer is bonded to the glass window 14 shown in FIG. That is, an air layer exists between the glass window 14 and the glass plate 10 with a spacer, but excess air generated in the process of adhering the glass plate 10 with a spacer to the glass window 14 passes through the through hole from the air layer. It is exhausted to the outside through 34C. Thereby, the internal pressure of the air layer becomes atmospheric pressure, and the butyl rubber can be sufficiently adhered to the glass surface during construction.

  As shown in FIG. 4, the through hole 34 </ b> C is closed by fitting the cap 36 after the glass plate 10 with the spacer is bonded to the glass window 14. The cap 36 includes a conical body portion 36A and a knob portion 36B. An operator grips the knob portion 36B and inserts the body portion 36A into the through hole 34C. At this time, from the viewpoint of increasing the moisture permeability of the air layer, it is preferable that the main body portion 36A is made of a non-moisture permeable resin and the butyl rubber 38 is applied to the peripheral portion of the main body portion 36A. In addition, after inserting the main body portion 36A into the through-hole 34C, it is preferable to cut the knob portion 36B from the main body portion 36A before placing a secondary seal described later on the peripheral portion of the multilayer glass window. . Furthermore, the through hole 34 </ b> C does not have to be provided for all of the four corner keys 34 arranged at the corners of the spacer 20, and may be provided only for one or two corner keys 34.

  FIG. 5 is a perspective view of the glass plate 40 with a spacer according to the second embodiment. FIG. 6 is an enlarged cross-sectional view of a main part of the glass plate 40 with a spacer. In addition, about the glass plate 40 with a spacer, the same code | symbol is attached | subjected about the same or similar member as the glass plate 10 with a spacer shown in FIG. 1, FIG. 2, and description is abbreviate | omitted.

  The Low-E film 42 formed on one surface 16A of the glass plate 16 of the glass plate with spacer 40 is a heat ray in which a first oxide film, an Ag film, and a second oxide film are laminated in this order. It is a shielding laminated film. Further, in the glass plate with spacers 40, the protective sheet 44 is detachably bonded to the butyl rubber 22 so as to cover one surface 16A of the glass plate 16, that is, to cover the entire surface of the Low-E film 42. .

  The Low-E film 42 is formed on the entire surface of the one surface 16A of the glass plate 16 by sputtering, but the portion formed on the outer peripheral portion of the glass plate 16 to which the butyl rubber 18 is bonded is trimmed and removed. . In addition, the laminated type Low-E film 42 has an advantage that the heat ray shielding film itself is superior to the Low-E film type in which the heat ray shielding film itself is an oxide or nitride, but the heat ray shielding film itself is an oxide. Further, it has a characteristic that it is more easily damaged than a Low-E film of a nitride type.

  Therefore, in order to prevent the Low-E film 42 from being scratched, the entire surface of the Low-E film 42 is covered with the spacer-attached glass plate 40 to which the spacer 20 has been attached in advance at the factory before shipping. A rectangular protective sheet 44 is detachably bonded to the butyl rubber 22 (see FIG. 5). This protective sheet 44 is removed from the butyl rubber 22 immediately before assembling the glass plate 40 with a spacer to the glass window 14 at the construction site. Thereby, the glass plate 40 with a spacer can be conveyed from a factory to a construction site without damaging the Low-E film 42.

  By the way, in the glass plate 40 with a spacer, the desiccant 48 may be enclosed in the space 46 sealed by the one surface 16 </ b> A of the glass plate 16, the protective sheet 44 and the spacer 20.

  The stacked type Low-E film 42 has an Ag film that is weak against moisture (humidity). For this reason, when the Low-E film 42 is exposed to the atmosphere, the film deteriorates. For this reason, since the desiccant 48 is enclosed in the space 46, the Low-E film 42 can be protected from moisture, and the durability of the multilayer glass window in which the Low-E film 42 is formed can be improved. it can. The desiccant 48 is more preferably bonded to the protective sheet 44 so as not to contact the Low-E film 42.

  In addition, after manufacturing the glass plate 40 with a spacer in a factory, when the glass plate 40 with a spacer is stored in a factory for a long period of time, the encapsulating amount of the desiccant 48 is increased. That is, what is necessary is just to adjust the enclosure amount of the desiccant 48 according to the delivery date of the glass plate 40 with a spacer.

  The glass plates 10 and 40 with spacers described above are pre-bonded to the new glass plate 16 with the butyl rubber 18 at the factory, and the butyl rubber 22 is pre-bonded to the spacer 20 and the butyl rubber 22 is released from the mold. It is manufactured by adhering the paper tape 24 and the protective sheet 44 detachably.

  When the glass plates 10 and 40 with spacers are carried from the factory to the construction site shown in FIG. 3 to assemble the multi-layer glass window, the release paper tape 24 and the protective sheet 44 are removed from the butyl rubber 22, and the butyl rubber 22 is removed. It is only necessary to adhere to the existing glass window 14. Therefore, by using the glass plates 10 and 40 with spacers of the embodiment, the problem of adhesion quality, that is, the construction quality can be improved and the trouble at the construction site can be reduced. Windows can be easily assembled at the construction site.

  Next, an example of a method for assembling a multi-layer glass window using the glass plates 10 and 40 with spacers will be described. Here, the glass plate with spacers 10 will be described as an example, and the glass plate with spacers 40 is substantially the same as the method for assembling a multi-layer glass window with the glass plate with spacers 10, and the description thereof will be omitted.

  First, as shown in FIGS. 3 and 7, prismatic sponge rubbers 50, 50... Are attached along the vertical and horizontal ridges 12 and the weight of the glass plate 10 with the spacer is received by the horizontal ridges 12 on the bottom side. The setting blocks 52 and 52 are attached. One or more setting blocks 52 may be provided. Further, a groove 56 is cut and formed in the sealant material 54 placed on the top side ridge 12, and an upper piece 58 </ b> A of the fall-preventing plate 58 is fitted and fixed in the groove 56 as necessary.

  Next, the release paper tape 24 is peeled off from the glass plate 10 with spacer as shown in FIG. 3 to expose the butyl rubber 22 as shown in the side view of FIG. 8, and the adhesive tape 32 shown in FIG. And the bottom part of this glass plate 10 with a spacer is mounted on the setting blocks 52 and 52, and the upper part of the glass plate 10 with a spacer is engaged with the engagement piece 58B of the fall prevention plate 58 shown in FIG. Then, the glass plate 10 with a spacer is pressed toward the glass window 14, and the glass plate 10 with the spacer is bonded to the glass window 14 with butyl rubber 22.

  Next, in order to ensure adhesion of the butyl rubber 22 to the glass surface, the glass plate 16 is pressed against the glass window 14 by a roller 60 as shown in FIG.

  At the time of the crimping, conventionally, the air in the air layer between the existing glass window and the new glass plate is in a completely sealed state. Thus, after the new glass plate is attached, in order to compress (compress) the butyl rubber by a predetermined amount of crushing, it is necessary to compress the air confined in the air layer, and this is required for the compression. The power was great. Also, when working at the construction site, it is difficult to use equipment such as a press machine, so it is not possible to apply sufficient crimping force at the construction site, and the moisture resistance of butyl rubber cannot be fully demonstrated. There was concern. Furthermore, even if sufficient crimping is possible at the initial stage, deformation (expansion) of an existing glass window or a new glass plate due to pressurization at the time of crimping, and peeling of the sealed part and moisture-proof part due to it There was concern.

  Therefore, in the glass plate 10 with a spacer according to the embodiment, as shown in FIG. 4, the corner key 34 which is a part of the spacer 20 is provided with a through hole 34 </ b> C for air venting (which may be an air valve). Thereby, when attaching the glass plate 10 with a spacer to the glass window 14, even if the glass plate 10 with a spacer is pressure-bonded to the glass window 14, the air in the air layer is exhausted to the outside through the through hole 34 </ b> C. Therefore, the pressure in the air layer can be made equal to the external pressure with respect to the pressurization at the time of pressure bonding. Accordingly, the butyl rubber 22 can be pressure-bonded with a sufficient crushing margin even in the field construction, and at the same time, the glass window 14 and the glass plate 10 with the spacer can be satisfactorily constructed without being deformed, and the sealing portion The concern about peeling of the moisture-proof part can be solved.

  In addition, by providing the through holes 34C (air valves) at a plurality of locations in the spacer 20, the air layer after the glass plate 10 with spacers is attached to the glass window 14 is dried through the through holes 34C (air valves). Air or gas can be sealed. Furthermore, when internal condensation occurs later in the multi-layer glass window, the dry air can be replaced via the through hole 34C (air valve).

  In addition, as disclosed in Japanese Patent No. 1627298, a hole may be formed in a glass plate of double-layer glass, and the hole may be sealed with a cap. However, from the processing cost and design point of view of the glass plate, a through hole 34C is formed in a part of the spacer 20, particularly the corner key 34 as in the embodiment, and the through hole 34C is sealed with the cap 36. Is preferred.

  When the pressure bonding of the butyl rubber 22 by the roller 60 is completed, the through hole 34C is sealed by the main body portion 36A of the cap 36, and the knob portion 36B is cut from the main body portion 36A.

  Next, a secondary sealing material 62 is placed around the four sides of the glass window 14 and the glass plate 10 with a spacer as shown in the plan view of FIG. To seal the gap. Thereby, the multi-layer glass window 64 is assembled. As the secondary sealant 62, a polysulfide sealant or a silicone sealant having high adhesion to glass is used.

  As shown in FIGS. 11 and 12, the secondary sealing material 62 is placed in a space between the outer peripheral surface of the spacer 20 and the sponge rubber 50 without filling the space with the secondary sealing material 62. In addition, the secondary sealing material 62 is also filled in the space between the small edge of the glass plate 10 with the spacer and the sponge rubber 50. As a result, the secondary sealing material 62 adheres to the inner surface of the existing glass window 14, the inner surface and the facet of the new glass plate 16, and the outer peripheral surface of the spacer 20. Durability is improved.

  As shown in FIG. 13, the conventional assembly method in which the spacer 2 and the new glass plate 3 are attached to the existing glass window 1 having a single plate structure to form the multilayer glass window 4 is the new glass plate 3. Is bonded to the existing glass window 1 with the butyl rubber 5 through the spacer 2, and then a secondary sealing material 7 is placed in the gap between the edge of the new glass plate 3 and the flange 6.

  In the conventional assembly method, the moisture resistance performance of the secondary seal material 7 is simply the thickness of the secondary seal material 7. For this reason, the moisture resistance effect by the secondary sealing material 7 is insufficient, and at the same time, the shape retention performance as the multilayer glass window 4 is insufficient.

  Therefore, in the method for assembling the multi-layer glass window 64 of the embodiment, as shown in FIGS. The secondary sealing material 62 was filled, and the secondary sealing material 62 was also filled in the space between the small edge of the glass plate 10 with the spacer and the sponge rubber 50. As a result, the secondary sealing material 62 adheres to the inner side surface of the existing glass window 14, the inner side surface and the edge surface of the new glass plate 16, and the outer peripheral surface of the spacer 20, so that the quality with excellent durability is achieved. A good multi-layer glass window 64 can be assembled at the construction site.

  Further, the form of the double glazing window 64 shown in FIG. 14 is different from the form of the double glazing window 64 shown in FIG. 11 in the way of placing the secondary sealing material 62. It is. According to FIG. 14, a secondary sealing material 62 is placed between the space sandwiched between the inner side surface of the existing glass window 14 and the new glass plate 16 and the outer peripheral surface of the spacer 20. A portion 63 of the placed secondary sealing material 62 is placed in a thin piece along the inner surface of the existing glass window 14. By placing the secondary seal material 62 in this way, the secondary seal material 62 exists from the lower surface of the spacer 20 to the sealant material 54 placed on the flange 12 under the existing glass window 14. Therefore, the design property of the multilayer glass window 64 when the multilayer glass window 64 is viewed from the outdoor side is improved. That is, in the multilayer glass window 64 of FIG. 11, the boundary line between the secondary sealing material 62 and the sponge rubber 50 is visible when the multilayer glass window 64 is viewed from the outdoor side, but the multilayer glass window of FIG. In 64, since the boundary line is not visible, the design is improved.

  In the double-glazed window 64 of FIG. 14, in order to improve workability at the time of disassembly, the secondary seal material 62 and the sealant material 54 of the existing glass window 14 are not in direct contact with each other. It is preferable to install a bond breaker 65 between the sealant material 54 and the sealant material 54. The material of the bond breaker 65 is preferably a polyethylene tape. The presence of the bond breaker 65 eliminates the need for stripping the secondary sealing material 62 from the sealant material 54 of the existing glass window 14 during disassembly.

  Further, according to FIGS. 11, 12, and 14, since the butyl rubbers 18 and 22 as the primary sealing material and the secondary sealing material 62 are in contact with each other, the deformation of the glass window 14 and the glass plate 16 is suppressed, and Since the next sealing material 62 protects the butyl rubber 18 and 22, the durability of the multilayer glass is further enhanced.

  Further, the multilayer glass window 64 of the embodiment is around the secondary sealing material 62, and an elastic member such as sponge rubber 50 is disposed between the glass plate with spacer 10 and the flange 12. For this reason, even when an interlayer deformation occurs in the multi-layer glass window during an earthquake, the elastic member can absorb the movement caused by the locking of the glass plate 10 with the spacer, which is a desirable configuration in terms of the inter-layer deformation tracking performance.

  In the conventional configuration, the new glass plate has its own weight supported only by the secondary sealing material. Therefore, a long-term load is applied to the secondary sealing material, which is not a desirable configuration in consideration of the durability of the secondary sealing material.

  In order to solve this problem, in the multi-layer glass window 64 of the embodiment, the setting blocks 52 and 52 are installed at the lower edge of the lower glass plate 10 with the spacer, so that the secondary sealing material 62 has the spacer. The long-term load due to the weight of the glass plate 10 is not applied. Since the setting block 52 does not require the secondary sealant 62 to support the own weight of the glass plate 10 with the spacer, it is possible to deal with thick glass and large glass.

  Furthermore, the glass plate 10 with a spacer is securely attached until the secondary sealant 62 is cured by providing a tilt-preventing plate 58 that prevents the glass plate 10 with a spacer from falling over the glass plate 10 with a spacer. It can be fixed at a desired position.

  On the other hand, the plate thickness of the glass plate 16 is preferably 75% or more with respect to the plate thickness of the existing glass window 14.

  In order to give the wind pressure strength equivalent to that of the glass window 14 before adding the glass plates 10 and 40 with spacers, the thickness of the glass plate 16 is set to 75% or more of the glass thickness of the glass window 14. do it. However, this is not the case when the strength design with a margin is made at the time of designing the wind pressure resistance of the glass window 14.

  DESCRIPTION OF SYMBOLS 10 ... Glass plate with spacer, 12 ... Glass, 14 ... Glass window, 16 ... Glass plate, 18 ... Butyl rubber, 20 ... Spacer, 22 ... Butyl rubber, 24 ... Release paper tape, 26 ... Low-E membrane, 28 ... Silica gel, 30 ... Hygroscopic window, 32 ... Adhesive tape, 34 ... Corner key, 36 ... Cap, 38 ... Butyl rubber, 40 ... Glass plate with spacer, 42 ... Low-E film, 44 ... Protective sheet, 46 ... Space, 48 ... Desiccant 50 ... sponge rubber, 52 ... setting block, 54 ... sealant material, 56 ... groove, 58 ... anti-falling plate, 60 ... roller, 62 ... secondary sealant, 64 ... multi-layer glass window, 65 ... bond breaker

Claims (7)

  One side surface of the spacer is bonded to the inner side of the peripheral portion of one surface of the glass plate via the first butyl rubber, and the second butyl rubber is bonded to the other side surface of the spacer. A glass plate with a spacer, wherein a protective sheet is detachably bonded to butyl rubber.   The glass plate with a spacer according to claim 1, wherein a heat ray shielding film is formed on the one surface of the glass plate.   The heat ray shielding film is a heat ray shielding film in which a first oxide film, an Ag film, and a second oxide film are laminated in this order, and the protective sheet covers substantially the entire surface of one side of the glass plate. The glass plate with a spacer according to claim 2, which is detachably bonded to the second butyl rubber so as to cover.   The glass plate with a spacer according to claim 3, wherein a desiccant is sealed in a space sealed by one surface of the glass plate, the protective sheet, and the spacer.   The spacer is constituted by a hollow mold material, and a desiccant is sealed in the internal space, and a moisture absorption window is formed on the opposing surfaces of the spacers arranged along the four sides of the glass plate. The glass plate with a spacer according to any one of claims 1 to 4, wherein the window is sealed with a tape.   The glass plate with a spacer according to any one of claims 1 to 5, wherein a plate thickness of the glass plate is 75% or more with respect to a plate thickness of an existing glass window to which the glass plate is attached. Preparing the glass plate with a spacer according to any one of claims 1 to 6 on site;
A bonding step of bonding the glass sheet with a spacer from which the protective sheet and / or the tape has been removed at the site, to the existing glass window at the site via the second butyl rubber,
A sealing step of sealing the periphery of the glass plate with the spacer and the glass window with a sealing material;
A method for assembling a multi-layer glass window.

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