Structure, double-glazed window, and laminate

Abstract

A multilayer glass window 1 comprising: a laminate 6 comprising a resin plate 12 and glass film 14 that are laminated with an adhesive layer 13 interposed therebetween; and a sash 4 that holds an end section 6a of the laminate 6. The multilayer glass window 1 is configured such that an exposed section X of the adhesive layer 13, exposed to an outer surface of the laminate in the end section 6a of the laminate 6, is covered by a metal tape 11.

Description

[Technical Field]

[0001] The present disclosure relates to structures, double-pane windows, and laminates. [Background technology]

[0002] BACKGROUND ART As is well known, one type of window used in buildings such as houses and offices is a double-glazed window that uses double-glazed glass with excellent heat insulating properties (see, for example, Patent Document 1).

[0003] Double glazing consists of two glass panes facing each other with a hollow layer between them, a spacer placed between the two panes along their edges to maintain the distance between them, and a sealant that bonds and secures the edges of the two panes together on the outer periphery of the spacer. The edges of the double glazing are held in place by the sash, which serves as the window frame, via a glazing channel or the like.

[0004] In highly insulating double-glazed glass, a gas-impermeable polysulfide sealant is generally used to seal an insulating gas such as argon in the cavity. Polysulfide sealants contain a plasticizer to give the sealant flexibility. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2014-202055 Summary of the Invention [Problem to be solved by the invention]

[0006] In recent years, laminates have been used in place of glass sheets constituting double-glazing glass in order to reduce the weight of double-glazing glass and improve its impact resistance. One example of a laminate structure is a structure in which a resin sheet serving as a core material is laminated on a thin glass sheet via an adhesive layer. By using such a laminate, it becomes possible to effectively utilize the advantages of resin sheets, such as their lower specific gravity and resistance to physical impact compared to glass sheets, in double-glazing glass.

[0007] However, when the laminate is used as described above, the following problems have arisen that must be solved: the adhesive layer of the laminate absorbs moisture from the atmosphere, causing it to become cloudy and lose transparency, or the adhesive strength is reduced, causing peeling.

[0008] The above-mentioned problems do not only occur with double-glazed windows, but also occur when laminates are used instead of glass sheets in structures other than double-glazed windows (for example, platform doors at railway stations, digital signage covers, etc.).

[0009] In view of the above circumstances, a technical problem to be solved is to prevent the adhesive layer of a laminate from absorbing moisture from the atmosphere in a structure having a laminate as a component part. [Means for solving the problem]

[0010] The structure for solving the above problem is a structure comprising a laminate having a plate-shaped core material and a glass plate laminated on the core material via an adhesive layer, and a frame body that holds the end of the laminate, and is characterized in that the exposed portion of the adhesive layer exposed on the outer surface of the laminate at the end of the laminate is covered with metal foil.

[0011] In this structure, the exposed portions of the adhesive layer at the outer surface of the laminate at the edge of the laminate are covered with metal foil, which makes it possible to prevent the adhesive layer of the laminate from absorbing moisture from the atmosphere.

[0012] In the above configuration, a covering member containing a plasticizer may be provided and disposed between the end of the laminate and the frame, and a metal foil may be interposed at the interface between the exposed portion of the adhesive layer and the covering member.

[0013] When the covering member contains a plasticizer, the plasticizer may seep into the adhesive layer at the interface between the covering member and the exposed portion of the adhesive layer exposed on the outer surface of the laminate, causing problems such as discoloration or peeling of the adhesive layer. However, by interposing a metal foil at the interface between the exposed portion of the adhesive layer and the covering member, it is possible to accurately eliminate such risks.

[0014] In the above configuration, the covering member is preferably a sealing material containing a plasticizer.

[0015] In this way, the sealing material can make it difficult for gases and the like to pass through, and the laminate can be firmly fixed in the structure.

[0016] In the above configuration, it is preferable that the core material includes a resin plate, and the exposed portion of the resin plate exposed on the outer surface of the laminate is covered with metal foil.

[0017] This reliably eliminates the risk that the plasticizer contained in the covering member will seep into the resin plate due to the presence of the metal foil, causing discoloration or peeling of the resin plate.

[0018] In the above configuration, the metal foil is preferably an aluminum foil.

[0019] In this way, aluminum foil, which is easily available and inexpensive, is used as the metal foil, making it possible to reduce the cost required to manufacture the structure.

[0020] In the above configuration, it is preferable that the metal foil is attached to the end portion of the laminate with an adhesive.

[0021] In this way, the metal foil can be tightly attached to the end of the laminate, which makes it possible to more reliably prevent the plasticizer from seeping out into the adhesive layer or resin plate.

[0022] In the above-mentioned configuration, it is preferable that a glass plate be superimposed on each of the front and back sides of the core material via an adhesive layer.

[0023] In this way, the front and back sides of the laminate have a symmetrical structure with respect to the core material, which can minimize the risk of warping of the laminate.

[0024] Furthermore, with a double-glazed window made of the above structure, it is possible to obtain the same effects as those described above.

[0025] In addition, a laminate for solving the above problem is a laminate comprising a plate-shaped core material and a glass plate laminated on the core material via an adhesive layer, and is characterized in that the exposed portion of the adhesive layer exposed on the outer surface of the laminate at the end of the laminate is covered with metal foil.

[0026] In this laminate, the exposed portion of the adhesive layer at the edge of the laminate that is exposed on the outer surface of the laminate is covered with metal foil, so when this laminate is used in a structure (such as a double-glazed window) that uses the laminate as a component, the same effects as described above can be obtained. [Effects of the Invention]

[0027] The structure, double-glazed window, and laminate according to the present disclosure can prevent the adhesive layer of the laminate from absorbing moisture from the atmosphere. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 1 is a cross-sectional view showing a double-glazed window. [Figure 2] FIG. 1 is a cross-sectional view showing a laminate and metal tape in a double-glazed window. [Figure 3]FIG. [Figure 4] FIG. [Figure 5] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0029] Hereinafter, a structure, a double-glazed window, and a laminate according to an embodiment will be described with reference to the accompanying drawings.

[0030] Figure 1 shows a double-glazed window 1 as an example of a structure. As shown in the figure, the double-glazed window 1 comprises double glass 2, a glazing channel 3 attached to the end of the double-glazed glass 2, and a sash 4 as a frame that holds the end of the double-glazed glass 2 via the glazing channel 3.

[0031] The double-glazed glass 2 comprises a laminate 6 and a glass plate 7 facing each other with a hollow layer 5 in between, a spacer 8 interposed between the laminate 6 and the glass plate 7 along their ends 6a, 7a to maintain a gap between them, a primary sealant 9 for bonding the spacer 8 to the laminate 6 and the glass plate 7, a secondary sealant 10 as a covering member for bonding and fixing the ends 6a, 7a of the laminate 6 and the glass plate 7 together on the outer periphery of the spacer 8, and a metal tape 11 for covering the end 6a of the laminate 6.

[0032] The hollow layer 5 is filled with a heat insulating gas (for example, argon, air, etc.).

[0033] The laminate 6 includes a resin plate 12 serving as a core material, and glass films 14, 14 laminated on the front and back sides of the resin plate 12 via adhesive layers 13. In this embodiment, the core material is made of a single resin plate 12, but the present invention is not limited to this. As a variation of this embodiment, the core material may be made of a plurality of resin plates laminated together.

[0034] A polycarbonate plate, for example, can be used as the resin plate 12. The glass film 14 has an area slightly smaller than that of the resin plate 12, and the entire periphery of the end of the resin plate 12 protrudes beyond the end of the glass film 14. This makes it possible to suitably protect the end of the glass film 14 from impacts and the like. Note that, as a variation of this embodiment, the resin plate 12 and the glass film 14 may have approximately the same area.

[0035] Suitable materials for the adhesive layer 13 include, for example, ethylene vinyl acetate copolymer resin (EVA), polyvinyl butyral resin (PVB), and UV-curable resin, but other materials that can be used include acrylic adhesives, silicone adhesives, rubber adhesives, UV-curable acrylic adhesives, urethane adhesives, silicone adhesives, rubber adhesives, UV-curable epoxy adhesives, thermosetting epoxy adhesives, thermosetting melamine adhesives, and thermosetting phenolic adhesives.

[0036] A portion of the adhesive layer 13 is exposed on the outer surface of the laminate 6, and this portion constitutes an exposed portion X (the portion indicated by a thick line in FIG. 1). Similarly, a portion of the resin plate 12 is also exposed on the outer surface of the laminate 6, and this portion constitutes an exposed portion Y (the portion indicated by a thick line in FIG. 1). In a modified example in which the resin plate 12 and the glass film 14 have approximately the same area, the adhesive layer 13 may be configured to be exposed only on the edge surfaces of the laminate 6, without being exposed on the main surfaces of the laminate 6.

[0037] The glass plate 7 has approximately the same area as the laminate 6 and is arranged approximately parallel to the laminate 6. As a variation of this embodiment, the laminate 6 may be used instead of the glass plate 7. That is, two laminates 6 may be arranged opposite each other with the hollow layer 5 sandwiched between them. However, from the perspective of ensuring the rigidity of the double glazing 2, it is preferable to sandwich the hollow layer 5 between the laminate 6 on one side and the glass plate 7 on the other side.

[0038] The spacer 8 is hollow and filled with a desiccant 15. The spacer 8 also has through-holes 16, which form a continuous space from the hollow layer 5 to the inside of the spacer 8. Therefore, the insulating gas in the hollow layer 5 is dried by the desiccant 15 through the through-holes 16.

[0039] The primary sealant 9 is interposed between the side surface of the spacer 8 and the main surface of the laminate 6, and between the side surface of the spacer 8 and the main surface of the glass plate .

[0040] The secondary sealant 10 is a sealant. This secondary sealant 10 contains a polysulfide-based plasticizer. The secondary sealant 10 is filled into a recess formed by the main surface of the laminate 6, the outer peripheral surface of the spacer 8, and the main surface of the glass plate 7. Furthermore, the secondary sealant 10 covers the end surfaces of the laminate 6 and the glass plate 7 from the outer periphery. As a variation of this embodiment, a sealant containing a plasticizer other than a polysulfide-based plasticizer may be used.

[0041] The metal tape 11 is attached along the entire periphery of the end 6a of the laminate 6. At the end 6a of the laminate 6, the metal tape 11 continuously covers the laminate 6 from the inner main surface (the edge of the inner glass film 14) to the outer main surface (the edge of the outer glass film 14), including the end face of the laminate 6. This allows the metal tape 11 to be interposed at the interface between the exposed portion X of the adhesive layer 13 and the secondary sealant 10, and at the interface between the exposed portion Y of the resin plate 12 and the secondary sealant 10. In other words, the exposed portion X and the secondary sealant 10, and the exposed portion Y and the secondary sealant 10, are isolated and not in contact with each other by the metal tape 11. The portion of the metal tape 11 covering the outer main surface of the laminate 6 may be omitted; it is sufficient that the metal tape 11 is at least interposed at the interface between the exposed portion X and the secondary sealant 10.

[0042] Of the components of the double-glazed window 1, Figure 2 shows only the laminate 6 and the metal tape 11. As shown in the figure, the metal tape 11 is formed by overlapping a metal foil 11a and an adhesive 11b. The type of metal constituting the metal foil is not particularly limited, but aluminum foil is used in this embodiment. Furthermore, an adhesive that does not react with the adhesive layer 13 is used as the adhesive 11b, and an acrylic adhesive is used in this embodiment.

[0043] As shown in Figure 1, the glazing channel 3 is interposed between the double glazing glass 2 and the sash 4 to fix the two together. The glazing channel 3 is made of, for example, polyvinyl chloride. The sash 4 is made of, for example, aluminum.

[0044] The main actions and effects of the above-described double-glazed window 1 (structure) will be described below.

[0045] In the above-mentioned double-glazed window 1, the exposed portion X of the adhesive layer 13 exposed on the outer surface of the laminate 6 at the end portion 6a of the laminate 6 is covered with a metal tape 11 (metal foil 11a). This makes it possible to prevent the adhesive layer 13 of the laminate 6 from absorbing moisture from the atmosphere. Furthermore, in the above-mentioned double-glazed window 1, the metal tape 11 (metal foil 11a) is interposed at the interface between the exposed portion X of the adhesive layer 13 exposed on the outer surface of the laminate 6 and the secondary sealant 10. The presence of this metal tape 11 makes it possible to prevent problems such as the plasticizer contained in the secondary sealant 10 seeping into the adhesive layer 13 and causing discoloration or peeling of the adhesive layer 13.

[0046] In the above embodiment, a double-glazed window has been described as an example of the structure, but this is not limiting. For example, the structure may be a door such as a platform door at a railway station, or a digital signage cover. When these structures have a laminate as a component, and an exposed portion of the adhesive layer exposed on the outer surface of the laminate is adjacent to a covering member containing a plasticizer (for example, a sealant disposed between an end of the laminate and a frame that holds the end), a metal foil may be interposed at the interface between the exposed portion and the covering member.

[0047] Below, examples of structures will be given other than the above-mentioned double-glazed window 1. In the following description of the sliding doors 17, 18 and vehicle window 19, elements that are substantially the same as elements already described in the above-mentioned double-glazed window 1 will be assigned the same reference numerals in the drawings referred to in the description of the sliding doors 17, 18 and vehicle window 19, and redundant description will be omitted.

[0048] 3 shows a sliding door 17 as an example of a structure. This sliding door 17 is used, for example, as a platform door and can slide in a direction perpendicular to the plane of the paper. This sliding door 17 includes a laminate 6, a metal tape 11 covering an end 6a of the laminate 6, a frame 20 as a frame body for holding the end 6a, and a sealing material 21 as a covering member interposed between the end 6a and the frame 20.

[0049] An opening 20a is formed at the upper end of the frame 20, and the end 6a of the laminate 6 is accommodated in the frame 20 through the opening 20a. The sealant 21 is made of, for example, a rubber packing, and covers the metal tape 11 while filling the gap formed between the end 6a of the laminate 6 and the frame 20. The sealant 21 may or may not contain a plasticizer, like the secondary sealant 10 in the above-mentioned double-glazed window 1.

[0050] 4 shows a sliding door 18 as an example of a structure. The sliding door 18 differs from the sliding door 17 in that the sealing material 21 does not cover the metal tape 11 but closes the opening 20a of the frame 20 above the metal tape 11, and that a spacer 22 is interposed between the end face of the laminate 6 and the frame 20.

[0051] The sealing material 21 is filled in the gap formed between the periphery of the laminate 6 and the opening 20 a of the frame 20 .

[0052] Fig. 5 shows a vehicle window 19 as an example of a structure. The vehicle window 19 is a window in which the glass panes that are components of glass windows are replaced with a laminate. The vehicle window 19 includes a laminate 6, a metal tape 11 that covers an end 6a of the laminate 6, a frame 23 that serves as a frame for holding the end 6a, and a pressing member 24 that serves as a covering member interposed between the end 6a and the frame 23.

[0053] An opening 23a is formed at the upper end of the frame 23, and the end 6a of the laminate 6 is housed in the frame 23 through the opening 23a. The pressing member 24 is made of, for example, rubber, and is filled in the gap formed between the end 6a of the laminate 6 and the frame 20. The pressing member 24 holds down the laminate 6. The pressing member 24 may or may not contain a plasticizer, like the secondary sealing material 10 in the above-mentioned double-glazed window 1. [Example]

[0054] Six laminates measuring 300 mm x 300 mm were prepared, and the edges of three of the six laminates were covered with a metal tape made of aluminum foil and adhesive to form an example, while the edges of the remaining three laminates were left exposed without being covered with the metal tape to form a comparative example.

[0055] Each of the laminates of the examples and comparative examples was subjected to repeated cycles of immersion in water at 55°C and drying at 40°C. The immersion time in water per cycle was 7 to 10 days, and the clouding of the edges of the laminate due to immersion was confirmed. The drying time per cycle was 2 to 3 days, and the disappearance of the clouding due to drying was confirmed.

[0056] The above treatment was repeated, and in the comparative example, peeling occurred at the edges of all three laminates when the total immersion time reached 17 days, whereas in the example, peeling finally occurred at the edges of one of the three laminates when the total immersion time reached 34 days.

[0057] It is presumed that the above results were obtained because in the examples, the exposed portion of the adhesive layer exposed on the outer surface of the laminate was covered with metal tape, thereby preventing the adhesive layer from absorbing moisture as much as possible. [Example]

[0058] Three laminates serving as an example and three laminates serving as a comparative example were prepared in the same manner as in Example 1 above.

[0059] Each laminate of the Examples and Comparative Examples was left in an atmosphere of 55°C and 95% humidity for a specified number of days, then cooled to a temperature of approximately 30°C over 5 hours or more, and the edges of each laminate were checked for cloudiness and peeling.

[0060] After 16 days in the above atmosphere, no clouding or peeling occurred in any of the three Examples and three Comparative Examples. However, after 32 days in the above atmosphere, clouding and peeling occurred in all three Comparative Examples, while clouding and peeling did not occur in any of the three Examples. Furthermore, after 56 days in the above atmosphere, no clouding or peeling occurred in the three Examples.

[0061] It is presumed that the above results were obtained because in the examples, the exposed portion of the adhesive layer exposed on the outer surface of the laminate was covered with metal tape, thereby preventing the adhesive layer from absorbing moisture from the atmosphere as much as possible. [Explanation of symbols]

[0062] 1. Double-glazed windows 2. Double-glazed windows 4 Sash 6 Laminate 6a End of laminate 10 Secondary sealant 11 Metal Tape 11a Metal foil 11b Adhesive 12 Resin board 13 Adhesive layer 14 Glass film 17 Sliding Door 18 Sliding Door 19 Train window 20 frames 21 Sealant 23 frames 24 Presser member X Exposed part of adhesive layer Y Exposed part of resin plate

Claims

1. a laminate including a plate-shaped core material and a glass plate laminated on the core material via an adhesive layer; a frame that holds an end portion of the stack; A structure comprising: an exposed portion of the adhesive layer exposed on the outer surface of the laminate at an end of the laminate is covered with a metal foil; the glass plates are superimposed on the front and back sides of the core material via the adhesive layer, The structure is characterized in that the glass plate has an area smaller than that of the core material.

2. a covering member containing a plasticizer and disposed between the end of the laminate and the frame; 2. The structure according to claim 1, wherein the metal foil is interposed at the interface between the exposed portion of the adhesive layer and the covering member.

3. 3. The structure according to claim 2, wherein the covering member is a sealing material containing a plasticizer.

4. the core material includes a resin plate, 4. The structure according to claim 1, wherein the exposed portion of the resin plate exposed on the outer surface of the laminate is covered with the metal foil.

5. 5. The structure according to claim 1, wherein the metal foil is an aluminum foil.

6. 6. The structure according to claim 1, wherein the metal foil is attached to the end of the laminate with an adhesive.

7. A double-glazed window comprising the structure according to any one of claims 1 to 6.

8. A laminate comprising a plate-shaped core material and a glass plate laminated on the core material via an adhesive layer, an exposed portion of the adhesive layer exposed on the outer surface of the laminate at an end of the laminate is covered with a metal foil; the glass plates are superimposed on the front and back sides of the core material via the adhesive layer, The laminate is characterized in that the glass plate has an area smaller than that of the core material.

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