Cold vent multilayer glass and cold vent method

Abstract

To provide double glazing for cold vent capable of having high durability even when cold vent is performed, and a cold vent construction method using the double glazing for cold vent.SOLUTION: The double glazing for cold vent includes a plurality of sheets of glass 30 and a warm edge spacer arranged between the plurality of sheets of glass 30. The double glazing for cold vent is attached to a unit frame 10 having an upper frame 11, a lower frame 12 and a pair of vertical frames 13, 14 and constituting a glass unit for a curtain wall by supporting glass 30 to form a three dimensional curved surface facade constituted of the curtain wall.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a double glazing for cold venting and a cold venting method. [Background technology]

[0002] A cold bent glass unit in which the periphery of a sheet of glass is supported by a frame is known (see, for example, Patent Document 1). The cold bent glass unit described in Patent Document 1 constitutes a unit-type curtain wall that is assembled to a building frame at a construction site. Each of the multiple cold bent glass units has the frame and glass that constitute the cold bent glass unit twisted as a whole, and is attached to the building frame in this state to form a three-dimensional curved facade made up of a curtain wall. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-155975 Summary of the Invention [Problem to be solved by the invention]

[0004] As described above, the cold bent glass unit described in Patent Document 1 has the frame and glass in a twisted state as a whole. For this reason, the glass is required to have high strength. While laminated glass is used as glass with high strength, it is preferable to use double-glazed glass to meet the demand for high thermal insulation performance.

[0005] In double-glazed glass, a metal spacer is placed between the multiple panes of glass, and a primary sealant (butyl rubber) is placed between the spacer and the glass. However, when cold venting is performed on double-glazed glass, a large load is placed on the sealant at the periphery, causing stress concentration and the primary sealant protruding beyond the spacer position, posing a risk to durability.

[0006] An object of the present disclosure is to provide a double-glazed glass for cold venting that can maintain high durability even when cold venting is performed, and a cold venting method using the double-glazed glass for cold venting. [Means for solving the problem]

[0007] The present disclosure relates to a double-glazed glass for cold vents that includes multiple panes of glass and a warm edge spacer disposed between the multiple panes of glass. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a glass unit according to an embodiment. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the glass unit of the embodiment. [Figure 3] FIG. 2 is a cross-sectional view showing a glass unit according to an embodiment. [Figure 4] FIG. 2 is an enlarged cross-sectional view showing a glass unit according to an embodiment. [Figure 5] FIG. 2 is an enlarged cross-sectional view showing a state in which a cold vent is provided in the glass 30 of the glass unit of one embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] A first embodiment of the present disclosure will be described in detail below with reference to the drawings. In this specification, the term "visible direction" refers to the surface direction of the glass 30 in the glass unit 1 installed in the wall of a building, and the term "prospective direction" refers to the thickness direction of the glass 30 in the glass unit 1. The term "prospective direction" also refers to the indoor / outdoor direction. The term "prospective surface" refers to the surface of the glass unit 1 facing the outdoor side and the indoor side, respectively, and the term "prospective surface" refers to the surface of the glass unit 1 extending in the indoor / outdoor direction. In the drawings, the outdoor side of the glass unit 1 is referred to as the outdoor side X1, and the side of the glass unit 1 closer to the room is referred to as the indoor side X2.

[0010] The glass unit 1 is assembled by the cold bent method, in which the glass 30 that constitutes the glass unit 1 is twisted or bent and attached to a frame 10 as a unit frame, to form the glass unit 1. The assembled glass units 1 are then attached to the frame without being twisted or bent, and are lined up in multiple rows one above the other, forming a curtain wall facade that forms the exterior wall of the building.

[0011] As shown in Figure 1, the glass unit 1 has a frame body 10 and glass 30. The frame body 10 is made of an aluminum frame and has an upper frame 11, a lower frame 12, a pair of vertical frames 13, 14, and a center remainder 16, all of which are made of extruded aluminum. The upper frame 11 and the lower frame 12 form the short sides of the frame body 10, and the pair of vertical frames 13, 14 form the long sides.

[0012] In the initial state of frame 10, where no force is acting on frame 10 and frame 10 is not deformed, upper frame 11 and lower frame 12 have a twisted positional relationship in spatial geometry. Specifically, as shown in Fig. 1, imaginary lines L1 and L2 have a parallel positional relationship, and the extension direction of lower frame 12 has a parallel positional relationship with imaginary line L2, but the extension direction of upper frame 11 does not have a parallel positional relationship with imaginary line L1. Therefore, the extension directions of upper frame 11 and lower frame 12 do not have a parallel positional relationship and do not intersect.

[0013] Furthermore, in the initial state of frame body 10, where frame body 10 is not deformed because no force is acting on it, vertical frames 13 and 14 have a twisted positional relationship in spatial geometry. Specifically, as shown in Figure 1, virtual lines L3 and L4 have a parallel positional relationship, and the extension direction of vertical frame 13 is parallel to virtual line L3, but the extension direction of vertical frame 14 is not parallel to virtual line L4. Therefore, the extension directions of vertical frames 13 and 14 are not parallel to each other and do not intersect.

[0014] As a result, the frame 10 has a shape that imitates the state in which the glass 30 is twisted or bent by the cold bent method in its initial state, so when the glass unit 1 is attached to the skeleton to form a curtain wall that constitutes the exterior wall of a building, the frame 10 is attached to the skeleton without being twisted or bent by cold bent. This reduces stress on the frame 10 that would otherwise be caused by being twisted or bent over a long period of time.

[0015] As a result, it is possible to prevent excessive stress from being applied to screws (not shown) that are supported and guided in tapping holes H11, H12, H13, H14, H31, H32, H33, H36, H37, H38, and H39 (see FIG. 2) described below to secure the upper frame 11 and lower frame 12 to the vertical frames 13 and 14 in the frame body 10. It is also possible to prevent excessive stress from being applied to the interlocking portions and back panels that connect the frame bodies 10 together, thereby ensuring watertightness, airtightness, fire resistance, temperature difference resistance, and inter-story displacement tracking performance.

[0016] The glass 30 has a flat rectangular shape in its initial state, where it is not deformed because no force is acting on the glass 30. As shown in Fig. 5, the corner of the glass 30, which is the angle between the top side 31 and the vertical side 34 of the glass 30, is pressed in the direction indicated by the arrow by the cold bend method, whereby the glass 30 is twisted or bent and attached to and supported by the frame 10.

[0017] Screws (not shown) supported and guided by tapping holes H11, H12, H13, H14, H31, H32, H33, H36, H37, H38, and H39 (see FIG. 2) formed in the upper frame 11 and the lower frame 12 are threaded into screw holes on the sides of the vertical frames 13 and 14, thereby fixing the upper frame 11 and the lower frame 12 to the vertical frames 13 and 14 and forming a single unit, thereby forming a rectangular frame body 10. The upper frame 11, the lower frame 12, and the pair of vertical frames 13 and 14 are each formed in the shape of a rectangular plate.

[0018] In detail, as shown in Figure 2, the upper frame 11 has a flat upper wall portion 111, an outer lower extending wall 112 and an inner lower extending wall 114 each extending downward from the upper wall portion 111, and an intermediate upper extending wall 115 and an intermediate upper extending wall 116 each extending upward from the upper wall portion 111, and has a hollow structure (or solid structure).

[0019] The outer lower extension wall 112 is provided at a position where a step is formed in the vertical direction, a predetermined distance toward the interior side from the exterior end of the upper wall portion 111. At the exterior end of the upper wall portion 111, a hook-shaped portion 1172 of an upper portion 1171 of a ledge 117 that is L-shaped in cross section as shown in Figure 2 engages with a hook-shaped portion 1112 provided on the upper surface of the upper wall portion 111, thereby fixing the ledge 117 to the upper wall portion 111. A C-shaped space 1101 that opens downward is formed by the outer lower extension wall 112, the exterior end of the upper wall portion 111, and a side portion 1173 of the ledge 117.

[0020] The upper end of the glass 30 (30-2) is inserted into the space 1101. A seal made up of a silicone sealant (structural silicone sealant) 311 and a spacer gasket (not shown) is disposed between the upper end of the glass 30-2 and the outer lower extension wall 112. An outer glazing gasket material 315 is disposed between the upper end of the glass 30-2 and the side portion 1173 of the ledge 117.

[0021] As a result, the upper end of the glass 30-2 is supported in a state sandwiched between the outer lower extension wall 112 and the ledge 117 via the silicone sealant 311, a spacer gasket (not shown), and the outer glazing gasket material 315. As shown in Figure 2, the glass 30-2 (see Figure 1) is a laminated glass or single-pane glass constructed by bonding together two identical rectangular glass sheets 31 with an interlayer film 32 sandwiched therebetween.

[0022] The intermediate upper extending wall 115 and the intermediate upper extending wall 116 each extend upward on the upper surface closer to the outside room X1 in the projection direction, which is the longitudinal direction of the upper wall portion 111. The upper ends of the intermediate upper extending wall 115 and the intermediate upper extending wall 116 are formed in a C-shape that opens toward each other in the projection direction, and each abuts, via a spacer, against a side surface of a central lower protrusion 1214 (described later) of the lower frame 12. The inner lower extending wall 114 is provided at the end of the upper wall portion 111 on the indoor side.

[0023] As shown in Fig. 2, the lower frame 12 has a hollow structure (or a solid structure) and includes a plate-shaped upper wall portion 121 that bends in the vertical direction and an outer upper extending wall 122 that extends downward from the upper wall portion 121. As shown in Fig. 2, the upper wall portion 121 has a central lower convex portion 1214. The central lower convex portion 1214 extends downward from a portion of the upper wall portion 121 closer to the indoor side X, bends toward the indoor side, and then bends upward to connect to the upper wall portion 121.

[0024] The outer upper extending wall 122 is provided at a position toward the indoor side a predetermined distance from the outdoor side X1 end of the upper wall portion 121. At the outdoor side X1 end of the upper wall portion 121, a hook-shaped portion 1272 of a lower portion 1271 of a ledge 127 that is L-shaped in cross section as shown in Fig. 2 engages with a hook-shaped portion 1216 provided on the underside of the upper wall portion 121, thereby fixing the ledge 127 to the upper wall portion 121. A C-shaped space 1201 that opens upward is formed by the outer upper extending wall 122, the outdoor side end of the upper wall portion 121, and a side portion 1273 of the ledge 127.

[0025] The lower end of the glass 30 (30-1) is inserted into the space 1201. A seal made up of a silicone sealant 311 and a spacer gasket 312 is disposed between the lower end of the glass 30 and the outer upper extension wall 122. An outer glazing gasket material 315 is disposed between the lower end of the glass 30 and the side portion 1273 of the ledge 127.

[0026] As a result, the lower end of the glass 30 is supported between the outer upper extension wall 122 and the ledge 127 via the silicone sealant 311, spacer gasket 312, and outer glazing gasket material 315. A glass setting block 1202 is provided between the lower end of the glass 30 and the outside edge of the upper wall portion 121.

[0027] As shown in Figures 2 to 4, the glass 30-1 (see Figure 1) is a double-glazed glass in which two laminated glasses (or single glass sheets) each made of two identical rectangular glass sheets 31 bonded together with an interlayer film 32 sandwiched therebetween are joined together via a primary sealant 41 acting as a warm edge spacer and a secondary sealant 42 made of a silicone-based silicone sealant. Details of the primary sealant 41 will be described later.

[0028] As shown in Figures 3 and 4, the vertical frame 14 has a hollow structure (or solid structure) having a flat side wall portion 141, and an outer extending wall 142 and an inner extending wall 143 that extend from the side wall portion 141 in the viewing direction and outward from the glass unit 1 (to the left in Figure 3).

[0029] The outer extending wall 142 is provided at a position where a step is formed in the vertical direction, a predetermined distance toward the indoor side from the outdoor end of the side wall portion 141. An L-shaped thermal break insulating joint member support portion 1423 extending toward the outdoor side X1 is integrally formed with and connected to the outer extending wall 142 at a midpoint in the extension direction of the outer extending wall 142.

[0030] The thermal break insulating joint member 148 is fixed by resin crimping. The thermal break insulating joint member 148 is inserted between two aluminum extrusions, the tip of the groove of the aluminum extrusion is knurled to form a jagged edge, and the aluminum extrusion is crimped to the thermal break insulating joint member 148 to form a single unit.

[0031] The indoor side X2 portion of a connecting fitting 146 that extends toward the outdoor side X1 is fixed with a screw to the thermal break insulation joint member support part 1423, which is one of the two aluminum profiles. The connecting fitting 146 is a part that is resistant to side lightning. The other of the two aluminum profiles is the U-shaped thermal break insulation joint member clamping part 145 that opens toward the outdoor side X1, and is fixed with a screw to the outdoor side X1 portion of the connecting fitting 146.

[0032] A thermal break insulating joint member 148 as a solid heat insulating material is attached along the longitudinal direction of the vertical frame 14 so as to be sandwiched between the end face on the outside surface X1 of the thermal break insulating joint member support portion 1423 and the end face on the inside surface X2 of the thermal break insulating joint member clamping portion 145. The thermal break insulating joint member 148 is made of glass fiber reinforced 66 nylon and is effective as a heat insulating material.

[0033] As a result, when the glass unit 1 is attached to the skeleton to form the curtain wall that constitutes the exterior wall of the building, the glass unit 1 is attached to the skeleton without being twisted or bent, and the thermal break insulating joint members 148 attached along the longitudinal direction of the vertical frames 14 also remain in an untwisted or bent state in the curtain wall after construction. This significantly reduces stress on the thermal break insulating joint members 148 that would otherwise be caused by being twisted or bent over a long period of time. As a result, it is possible to increase the durability of the thermal insulation performance provided by the thermal break insulating joint members 148.

[0034] At the exterior end of the side wall portion 141, a hook-shaped portion 1472 constituting one short side extending from a long side portion 1471 of an F-shaped flange 147 in the cross section shown in Fig. 3 engages with one end of a U-shaped thermal break insulating joint member clamping portion 145, thereby fixing the flange 147 to the thermal break insulating joint member clamping portion 145. As shown in Fig. 3, a C-shaped space 1401 opening toward the inside of the glass unit 1 (to the right in Fig. 3) is formed by the outer extending wall 142, the thermal break insulating joint member support portion 1423, and the long side portion 1471 of the flange 147.

[0035] The side edge of the glass 30 (30-1) is inserted into the space 1401. A seal made up of a silicone sealant (structural silicone sealant) 311 and a spacer gasket 312 is disposed between the side edge of the glass 30-1 and the outer extending wall 142. An outer glazing gasket material 315 is disposed between the side edge of the glass 30-1 and a long side portion 1471 of the ledge 147. As a result, the side edge of the glass 30-1 is supported between the outer extending wall 142 and the ledge 147 via the silicone sealant 311, the spacer gasket 312, and the outer glazing gasket material 315.

[0036] As shown in Fig. 3, an L-shaped wheel guide 1421 that protrudes toward the indoor side X2 is provided at the extending end of the outer extending wall 142. In addition, a convex portion that serves as a wheel guide that protrudes toward the outdoor side X1 is provided at a portion of the inner extending wall 143 on the indoor side X2 in the projection direction of the wheel guide 1421. In addition, an L-shaped wheel guide 1411 for an outer wall gondola that protrudes in the projection direction and outward from the glass unit 1 (to the left in Fig. 3) is provided at a portion of the side wall portion 141 between the outer extending wall 142 and the inner extending wall 143.

[0037] This allows one of the pair of wheels 51 (the right wheel 51 in Figure 3) and the axle 52 to be guided within the U-shaped space surrounded by the side wall portion 141, the outer extension wall 142, and the inner extension wall 143, thereby allowing a gondola (not shown) connected to the axle 52 to be guided so that it can move up and down on the outside side X1 of the glass 30.

[0038] As shown in Figure 3, the vertical frame 13 has a hollow structure (or solid structure) having a flat side wall portion 131 and an outer extending wall 132 and an inner extending wall 133 that extend from the side wall portion 131 in the viewing direction and outward from the glass unit 1 (to the right in Figure 3).

[0039] The outer extension wall 132 is provided at a position where a step is formed in the vertical direction, a predetermined distance toward the indoor side from the outdoor end of the side wall portion 131. An L-shaped thermal break insulating joint member support portion 1323 extending toward the outdoor side X1 is integrally formed with and connected to a part of the outer extension wall 132 in the extension direction. The indoor side X2 portion of the connecting fitting 136 extending toward the outdoor side X1 is fixed to the thermal break insulating joint member support portion 1323 with a screw.

[0040] A U-shaped thermal break insulating joint member clamping portion 135 that opens toward the outside surface X1 is fixed with screws to the outside surface X1 of the connecting fitting 136. A thermal break insulating joint member 148 that functions as a heat insulator is attached along the longitudinal direction of the vertical frame 13 so as to be sandwiched between the outside surface X1 end face of the thermal break insulating joint member support portion 1323 and the inside surface X2 end face of the thermal break insulating joint member clamping portion 135.

[0041] As a result, just like in the case of the vertical frame 14, when the glass unit 1 is attached to the skeleton to form the curtain wall that constitutes the exterior wall of the building, the glass unit 1 is attached to the skeleton without being twisted or bent, and the thermal break insulating joint member 148 attached along the longitudinal direction of the vertical frame 13 also remains in an untwisted or bent state in the curtain wall after construction. This significantly reduces stress on the thermal break insulating joint member 148 that would otherwise be caused by being twisted or bent over a long period of time. As a result, it is possible to increase the durability of the thermal insulation performance provided by the thermal break insulating joint member 148.

[0042] At the exterior end of the side wall portion 131, a hook-shaped portion 1372 constituting one short side extending from a long side portion 1371 of an F-shaped flange 137 in the cross section shown in Fig. 3 engages with one end of a U-shaped thermal break insulating joint member clamping portion 135, thereby fixing the flange 137 to the thermal break insulating joint member clamping portion 135. As shown in Fig. 3, a C-shaped space 1301 opening toward the inside of the glass unit 1 (left side in Fig. 3) is formed by the outer extending wall 132, the thermal break insulating joint member support portion 1323, and the long side portion 1371 of the flange 137.

[0043] The side edge of the glass 30 (30-1) is inserted into the space 1301. A seal made up of a silicone sealant (structural silicone sealant) 311 and a spacer gasket 312 is disposed between the side edge of the glass 30-1 and the outer extending wall 132. An outer glazing gasket material 315 is disposed between the side edge of the glass 30-1 and the long side portion 1371 of the ledge 137. As a result, the side edge of the glass 30-1 is supported between the outer extending wall 132 and the ledge 137 via the silicone sealant 311, the spacer gasket 312, and the outer glazing gasket material 315.

[0044] An L-shaped wheel guide 1321 that protrudes toward the indoor side X2 is provided at the extending end of the outer extending wall 132. A convex portion that serves as a wheel guide that protrudes toward the outdoor side X1 is provided at a portion of the inner extending wall 133 on the indoor side X2 in the prospective direction of the wheel guide 1321. An L-shaped wheel guide 1311 for an outer wall gondola that protrudes outward from the glass unit 1 in the prospective direction (to the right in FIG. 3) is provided at a portion of the side wall portion 131 between the outer extending wall 132 and the inner extending wall 133.

[0045] As a result, the other wheel 51 of the pair of wheels 51 (the left wheel 51 in Figure 3) and the axle 52 are guided within the U-shaped space surrounded by the side wall portion 131, the outer extension wall 132, and the inner extension wall 133, which is not twisted or bent by the cold vent, and as a result, a gondola (not shown) connected to the axle 52 is guided so that it can move up and down on the outside X1 of the glass 30.

[0046] Next, the primary sealant 41 will be described. Due to the shared reactive groups bonded to a portion of the polymer composition that constitutes the primary sealant 41, the sealing compound that constitutes the primary sealant 41 adheres remarkably well to other materials, particularly glass, metal, and plastic. The primary sealant 41 forms a chemical bond with glass or the like through a hydrolysis-condensation reaction between the modified polymer component and the chemically active group (-Z-OH) on the substrate surface.

[0047] During curing, the secondary sealant 42, which is made of a silicone sealant, and the primary sealant 41 are further bonded by cross-linking across the interface between them. The primary sealant 41 is a thermoplastic spacer (TPS), and the primary sealant 41 and secondary sealant 42 produce a seal that is substantially more stable against external influences (e.g., migration of plasticizers from incompatible materials) at high temperatures and under exposure to changing temperatures, so that the formation of "Girlande" is completely eliminated.

[0048] In the primary sealant 41, the olefin-based polymer used is selected from the group including polyisobutylene, polybutene, butyl rubber (polyisobutylene-isoprene), styrene block copolymers, particularly SBS, SIS, SEBS, SEPS, SIBS, SBIBS (including modified forms), and amorphous copolymers and / or terpolymers of α-olefins (APAO).

[0049] In addition, in the primary sealant 41, the modified polymer is selected from the group including polyisobutylene, polybutene, butyl rubber (polyisobutylene-isoprene), styrene block copolymers, especially SBS, SIS, SEBS, SEPS, SIBS, SBIBS (including those in modified form), and amorphous copolymers and / or terpolymers of α-olefins (APAO), and this polymer contains at least one group of formula (1) at the end or statistically distributed in the chain. [ka] (In the formula, -A- is -(CH2)m- (2), -S-(CH2)m- (3), or [ka] and R1 and R 2 are the same or different and are an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an aralkyl group having 7 to 20 carbon atoms, X is a hydroxyl group or a hydrolyzable group; a is 0, 1, 2, or 3, b is 0, 1, or 2, the sum of a and b is 1 or more, n is an integer of 0 to 18, and m is an integer of 0 to 4, R 3 teeth [ka] is) and having the following overall composition: a) 30 to 60% by weight, preferably 40 to 50% by weight, of an olefin-based polymer, Mn 400 to 600,000 D, preferably 5,000 to 300,000 D; b) 2 to 35% by weight, preferably 5 to 25% by weight, of the modified polymer; c) 5 to 40% by weight, preferably 10 to 30% by weight, of a finely divided inert filler; d) 5 to 25% by weight, preferably 10 to 15% by weight, of a water-retaining substance; e) 0 to 3% by weight of antiaging agents, in particular antioxidants or UV stabilizers, It has.

[0050] The primary sealant 41 also contains fillers selected from the group consisting of finely divided and precipitated chalk, silicates, silicon oxide and carbon black. The chalk may or may not be surface-treated.

[0051] In addition, in the primary sealant 41, the silicate is selected from the group including talc, kaolin, mica, silicon oxide, silica, and calcium silicate or magnesium silicate.

[0052] Furthermore, a water-retaining substance selected from 3A to 10A molecular sieves (zeolites) is used in the primary sealant 41. Other substances that chemically or physically bind water may also be used.

[0053] The sealing compound in the primary sealant 41 can be formulated as either a one-component or two-component sealing compound. In the case of a one-component sealing compound, all components are mixed together during the manufacturing process. In the case of a two-component sealing compound, the olefin-based polymer (a) is mixed into one part, e.g., part A, together with the particulate inert filler (c) and some of the water-retaining filler (d); the second part, part B, is made from a portion of the olefin-based polymer (a) and / or the entire amount of the modified polymer (b) and a portion of the particulate inert filler together with the antioxidant (e). The two parts of the compound are then mixed together just before application.

[0054] In the primary sealing compound 41, the antioxidant is selected from the group including hindered phenols, thioethers, mercapto compounds, phosphorus esters, benzotriazoles, benzophenones, HALS, and antiozonants.

[0055] Examples of the embodiment include the following Example 1 and Example 2.

[0056] Example 1 composition: a) 42 wt% PIB b) 12 wt% silane-modified APAO c) 10% by weight of CaCO3 d) 20% by weight of carbon black e) 15% by weight of A3 type molecular sieve f) 1 wt. % phenolic antioxidant.

[0057] Example 2 composition: a) 40% by weight of PIB b) 10 wt% silane-modified APAO c) 20% by weight of CaCO3 d) 17% by weight of specialty carbon black e) 12% by weight of A3 type molecular sieve f) 1 wt. % phenolic antioxidant.

[0058] This allows the sealing compound that makes up the primary sealant 41 to adhere significantly better to the glass 30 due to the shared reactive groups bonded to part of the polymer composition that makes up the primary sealant 41. In the primary sealant 41, a hydrolysis-condensation reaction between the modified polymer component and the chemically active groups (-Z-OH) on the substrate surface allows chemical bonds to be formed with the glass or the like.

[0059] Additionally, during curing, the secondary sealant 42, which is comprised of a silicone sealant, and the primary sealant 41 can be further bonded by cross-linking across the interface therebetween. The primary sealant 41 is a thermoplastic spacer (TPS), which allows the primary sealant 41 and secondary sealant 42 to produce a seal that is substantially more stable against external influences (e.g., migration of plasticizers from incompatible materials) at elevated temperatures and under exposure to varying temperatures.

[0060] As a result, the glass 30-1 and the primary sealant 41 are firmly bonded, and the secondary sealant 42 and the primary sealant 41 are also firmly bonded, so the glass 30-1 can be made into double-glazed glass that is resistant to bending and twisting. This makes it possible to use double-glazed glass as the glass 30-1 in the cold vent method, and reduces damage to the primary sealant 41 caused by stress in the cold vent method. This makes it possible to improve the thermal insulation performance of the curtain wall.

[0061] Furthermore, when cold venting is performed on double-glazed glass, a large load is placed on the sealing portion, which in the past has particularly affected the primary sealant (butyl), posing a risk to durability. However, in this embodiment, instead of the conventional butyl primary sealant, primary sealant 41 is used, which makes it possible to create a configuration with high durability and also makes it flexible and able to be bent.

[0062] Next, a description will be given of a method for assembling the glass unit 1. In the method for assembling the glass unit 1, first, a step of laying flat the frame body 10 as a unit frame is performed. In the step of laying flat the frame body 10, an unassembled frame body 10 having an upper frame 11, a lower frame 12, and a pair of vertical frames 13, 14 is prepared, and the prepared upper frame 11, lower frame 12, and pair of vertical frames 13, 14 are laid flat.

[0063] Next, the glass 30 is twisted or bent by the cold bend method. In this process, as shown in Figure 5, the glass 30 is laid flat and the bottom edge 32 and vertical edge 33 are supported, while the corner between the top edge 31 and vertical edge 34 of the glass 30, which has been curved due to its own weight, is additionally pressed in the direction indicated by the arrow using the cold bend method. This twists or bends the glass 30 into a shape that can be attached to the frame 10.

[0064] Next, the process of assembling the glass unit is carried out. In the process of assembling the glass unit, the glass 30 in the twisted or bent state in the twisting or bending process is attached to the upper frame 11, lower frame 12, and pair of vertical frames 13, 14 that make up the frame body 10 in its initial state while being supported, thereby assembling the glass unit 1 for the curtain wall.

[0065] As a result, in the process of twisting or bending the glass 30, cold venting is performed with the glass 30 laid flat, while in the process of assembling the glass unit, the glass 30 in a twisted or bent state by the cold venting method can be attached to the upper frame 11, the lower frame 12, and the pair of vertical frames 13, 14, which are laid flat. Therefore, when cold venting is performed with the glass 30 laid flat, it is possible to perform cold venting using the glass 30's own weight. As a result, cold venting can be performed with a small load. In addition, while the glass 30 is temporarily fixed, the frame 10 and the glass 30 can be integrated with a silicone sealant 311 made of a two-component silicone sealant.

[0066] Furthermore, due to the difference in curvature, cold-vented glass 30 will have a "misalignment" near the center of vertical sides 33, 34 of glass 30. After this "misalignment" occurs in the process of twisting or bending the glass, a two-component silicone sealant that will become silicone sealant 311 in the process of assembling the glass unit is applied. This makes it possible to prevent excessive stress from being applied to silicone sealant 311, allowing it to function as silicone sealant 311 with long-term reliability.

[0067] The silicone sealant 311 made from this two-component silicone sealant gives the glass unit 1 integrated with the glass 30 high rigidity, making it possible to absorb shaking during rocking of the unit curtain wall during an earthquake, resulting in a curtain wall with excellent performance in tracking inter-story displacement during an earthquake.In addition, movement of the glass 30 within the glass unit 1 during an earthquake is prevented, making it possible to create a glass unit 1 that is safe and has high performance.

[0068] Furthermore, since cold venting work does not need to be performed at the construction site of a super-high rise building, it will be possible to easily construct curtain walls using the cold venting method with double-glazed glass on super-high rise buildings.

[0069] Although a preferred embodiment of the present disclosure has been described above, the present disclosure is not limited to the above-described embodiment and can be modified as appropriate.

[0070] For example, the glass 30-1 is made of double-glazed glass, and the glass 30-2 is made of laminated glass (or single-pane glass), but this is not limiting. For example, the glass 30-1 may be replaced with laminated glass (or single-pane glass), and the glass 30-2 may be replaced with double-glazed glass. [Explanation of symbols]

[0071] 1 glass unit, 10 frame body (unit frame), 11 upper frame, 12 lower frame, 13, 14 vertical frame, 30 glass, 41 primary sealant, 42 secondary sealant, 51 wheels, 148 thermal break insulating joint member (insulating material)

Claims

1. Multiple panes of glass and and a warm edge spacer disposed between the plurality of glass panes.

2. the warm edge spacer constitutes a primary sealant of the edge seal; the primary sealant comprises a silane-modified polymer; The silane-modified polymer is selected from the group consisting of polyisobutylene, polybutene, butyl rubber (polyisobutylene-isoprene), styrene block copolymers, and amorphous copolymers and / or terpolymers of α-olefins (APAO), and the polymer contains at least one group of formula (1) either at the end or statistically distributed in its chain. 【Chemistry 1】 (In the formula, -A- is -(CH2)m- (2), -S-(CH2)m- (3), or 【Chemistry 2】 and R １ and R ２ are the same or different and are an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an aralkyl group having 7 to 20 carbon atoms, X is a hydroxyl group or a hydrolyzable group; a is 0, 1, 2, or 3; b is 0, 1, or 2; the sum of a and b is 1 or more; n is an integer of 0 to 18; m is an integer of 0 to 4; and R3 is 【Transformation 3】 is) It is modified by and an overall composition of: a) 30 to 60 wt. % of an olefin-based polymer, Mn 400 to 600,000 D; b) 2 to 35 wt. % of a silane-modified polymer; c) 5 to 40% by weight of a particulate inert filler; d) 5 to 25% by weight of a water-retaining substance; e) 0 to 3 wt. % of an antioxidant; The double glazing for cold vent according to claim 1, wherein

3. 3. The double-glazed glass for cold venting according to claim 2, wherein the olefin-based polymer is selected from the group consisting of polyisobutylene, polybutene, butyl rubber (polyisobutylene-isoprene), styrene block copolymers, and amorphous copolymers and / or terpolymers of α-olefins (APAO).

4. 3. The cold vent double glazing according to claim 2, wherein the filler is selected from the group comprising finely divided and precipitated chalk, silicates, silicon oxide and carbon black.

5. 5. The cold vent double glazing according to claim 4, wherein the chalk is surface-treated.

6. 5. The cold vent double glazing according to claim 4, wherein the silicate is selected from the group comprising talc, kaolin, mica, silicon oxide, silica, and calcium or magnesium silicate.

7. 3. The double glazing for cold vents according to claim 2, wherein the water-retaining substance is selected from 3A to 10A type molecular sieves (zeolites).

8. 3. The double glazing for cold vent according to claim 2, wherein the anti-aging agent is selected from the group consisting of hindered phenols, thioethers, mercapto compounds, phosphorus esters, benzotriazoles, benzophenones, HALS and antiozonants.

9. 3. The double glazing for cold venting according to claim 2, wherein the edge seal has a secondary sealant that is a silicone-based sealant that bonds with the warm edge spacer and bonds with the secondary sealant by crosslinking.

10. A cold vent construction method in which a double glazing for cold venting, which comprises a plurality of glass sheets and a warm edge spacer disposed between the plurality of glass sheets, is twisted or bent.

11. the warm edge spacer constitutes a primary sealant of the edge seal; the primary sealant comprises a silane-modified polymer; The silane-modified polymer is selected from the group consisting of polyisobutylene, polybutene, butyl rubber (polyisobutylene-isoprene), styrene block copolymers, and amorphous copolymers and / or terpolymers of α-olefins (APAO), and the polymer contains at least one group of formula (1) either at the end or statistically distributed in its chain. 【Chemistry 1】 (In the formula, -A- is -(CH2)m- (2), -S-(CH2)m- (3), or 【Chemistry 2】 and R １ and R ２ are the same or different and are an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an aralkyl group having 7 to 20 carbon atoms, X is a hydroxyl group or a hydrolyzable group; a is 0, 1, 2, or 3; b is 0, 1, or 2; the sum of a and b is 1 or more; n is an integer of 0 to 18; m is an integer of 0 to 4; and R3 is 【Transformation 3】 is) It is modified by and an overall composition of: a) 30 to 60 wt. % of an olefin-based polymer, Mn 400 to 600,000 D; b) 2 to 35 wt. % of a silane-modified polymer; c) 5 to 40% by weight of a particulate inert filler; d) 5 to 25% by weight of a water-retaining substance; e) 0 to 3 wt. % of an antioxidant; The cold venting method according to claim 10, comprising:

12. 12. The cold venting method of claim 11, wherein the olefin-based polymer is selected from the group consisting of polyisobutylene, polybutene, butyl rubber (polyisobutylene-isoprene), styrene block copolymers, and amorphous copolymers and / or terpolymers of α-olefins (APAO).

13. 12. The cold venting method of claim 11, wherein the filler is selected from the group comprising finely divided and precipitated chalk, silicates, silicon oxide and carbon black.

14. 14. The cold venting method of claim 13, wherein the chalk is surface treated.

15. 14. The cold venting method of claim 13, wherein the silicate is selected from the group comprising talc, kaolin, mica, silicon oxide, silica, and calcium or magnesium silicate.

16. 12. The cold venting method according to claim 11, wherein the water-retentive material is selected from 3A to 10A type molecular sieves (zeolites).

17. 12. The cold venting method of claim 11, wherein the antioxidant is selected from the group consisting of hindered phenols, thioethers, mercapto compounds, phosphorus esters, benzotriazoles, benzophenones, HALS, and antiozonants.

18. 12. The cold venting method of claim 11, wherein the edge seal has the secondary sealant, which is a silicone-based sealant, bonded to the warm edge spacer and bonded to the secondary sealant by crosslinking.

19. 12. The cold venting method of claim 11, wherein the edge seal has a secondary sealant that is a silicone-based sealant that bonds with the warm edge spacer and bonds with the secondary sealant by crosslinking.

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