JP4528692B2 - Double glazing - Google Patents

Description

  The present invention relates to a multi-layer glass, and more particularly to a multi-layer glass used in the field of architecture such as housing and non-housing, and in the field of transportation such as automobiles, vehicles, ships and aircraft.

  Conventionally, as shown in FIG. 6, the multilayer glass 60 mainly has a pair of plate glasses 61 and 62 having a thickness of 5 mm opposed to each other with a predetermined interval and a predetermined interval between the plate glasses 61 and 62 being constant, for example, 6 mm. A spacer 64 fitted between the peripheral portions of the plate glasses 61 and 62 to be defined, and an outer peripheral edge portion defined by the spacer 64 and the plate glasses 61 and 62, and the curability for sealing the spacer 64 from the outside. And a resin sealing material 65. The spacer 64 is composed of a substantially U-shaped rigid separating member 66 made of metal such as aluminum, iron, or stainless steel, and a bonding material 67 that joins the rigid separating member 66 and the plate glasses 61 and 62 together.

  In the manufacturing process of the multilayer glass 60 configured as described above, a tape is attached to the peripheral edge of the multilayer glass 60. Thereby, the damage of the peripheral part which may arise at the time of conveyance of the multilayer glass 60 or the assembly | attachment to a sash is prevented, and the quality of multilayer glass is improved.

  Here, when the tape is attached to the entire peripheral edge of the multilayer glass 60, when moisture enters the inside of the multilayer glass 60, the entered moisture cannot be discharged to the outside of the multilayer glass 60. There is a problem.

In order to solve such a problem, a multi-layer glass including a protective material provided with a moisture discharge hole at the lower edge of the multi-layer glass has been proposed (for example, see Patent Document 1). Thereby, the drainage property of the water | moisture content which entered the inside of multilayer glass is securable.
JP-A-8-208279

  However, in the double-glazed glass of Patent Document 1, a moisture discharge hole is provided in the protective material provided at the lower edge of the double-glazed glass. However, there is a problem in that moisture cannot be discharged sufficiently and satisfactory drainage cannot be ensured.

  An object of the present invention is to provide a multilayer glass capable of improving quality while ensuring good drainage.

In order to achieve the above object, the multilayer glass according to claim 1 is a multilayer glass comprising a plurality of glass sheets facing each other in a substantially upright state at a predetermined interval, and one of the plurality of glass sheets is a thermal glass. A pair of sheet glass made of heat strengthened sheet glass subjected to tempering treatment, a spacer interposed between the pair of sheet glass , and a space between the pair of sheet glass outside the spacer, and sealing the spacer from the outside A secondary sealing material, and a tape material adhered to a peripheral edge of only the heat strengthened plate glass , and the tape material is adhered so that an outer surface of the secondary sealing material is exposed. It is characterized by.

The double-glazed glass according to claim 2 is the double-glazed glass according to claim 1 , wherein the outer peripheral surface of the peripheral edge portion of the heat-strengthened plate glass is a curved surface protruding in the outer direction of the heat-strengthened plate glass. To do.

According to the multi-layer glass of claim 1, one of the plurality of plate glasses is a pair of plate glasses made of heat strengthened plate glass subjected to heat strengthening treatment , and a spacer interposed between the pair of plate glasses; A secondary sealing material that is filled between a pair of glass plates on the outside of the spacer and seals the spacer from the outside, and a tape material that is attached to the peripheral edge of only the heat-strengthened glass plate. The tape material is a secondary seal. Since it is stuck so that the outer surface of the material is exposed, it is possible to prevent damage to the heat-strengthened plate glass, which is likely to be damaged mainly during transportation, and to sufficiently drain water that has entered the inside of the multi-layer glass. Therefore, quality can be improved while ensuring good drainage.

According to the double-glazed glass of claim 2, the outer peripheral surface at the peripheral edge of the heat-strengthened plate glass is a curved surface protruding in the outer direction of the heat-strengthened plate glass, so that damage to the lower edge of the heat-strengthened plate glass is reduced. be able to.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a partial cross-sectional perspective view schematically showing a configuration of a multilayer glass body including a multilayer glass according to an embodiment of the present invention.

  In FIG. 1, a multilayer glass body 1 is composed of a multilayer glass 10 and a vinyl chloride multilayer glass holding member 20 fitted into the outer peripheral edge of the multilayer glass 10. It is held on the sash 30 via the glass holding member 20.

  FIG. 2 is a partial cross-sectional view of the multilayer glass 10 in FIG.

  In FIG. 2, the double-glazed glass 10 includes a pair of plate glasses 11 and 12 that face each other in a substantially upright state at a predetermined interval, and a primary sealant 15 between the pair of plate glasses 11 and 12 in the double-glazed glass 10. The interposed spacer 13, the secondary sealing material 16 that is filled between the glass plates 11 and 12 on the outer side of the spacer 13 (on the outer peripheral edge side of the multilayer glass 10), and seals the spacer 13 from the outside, and the peripheral edge of the plate glass 11 It is made of a tape material 17 having a substantially L-shaped cross section attached to a part of the tape. Dry air is sealed in the hollow layer 14 formed in the multilayer glass 10.

  The plate glass 12 is made of, for example, float plate glass, and the outer peripheral surface at the lower edge thereof is substantially perpendicular to the main surface of the plate glass 12.

  The plate glass 11 is made of a heat strengthened plate glass mainly used as fireproof glass, and the outer peripheral surface of the lower edge portion 11 b of the plate glass 11 is a curved surface protruding in the outer direction of the plate glass 11. Thereby, the breakage of the lower edge portion 11b of the plate glass 11 that occurs during conveyance or assembly to the sash 30 can be prevented. In addition, the lower edge part 11b of the plate glass 11 is not limited to the site | part located in the lower side at the time of the assembly | attachment to a sash, The site | part located in the lower side at the time of conveyance and handling of the multilayer glass 10 is included. For example, when conveying vertically long multilayer glass, the long-side outer periphery (side-side outer periphery) of the multilayer glass may be positioned on the lower side. In this case, the outer peripheral part on the long side of the multilayer glass is defined as the lower edge of the multilayer glass.

  Specifically, the plate glass 11 is formed by subjecting soda-lime-based plate glass to a peripheral edge finishing process and a heat strengthening process described later.

  The first polishing for polishing the outer peripheral surface of the plate glass 11 into a curved shape that protrudes toward the outer side of the plate glass 11 toward the intermediate portion in the thickness direction of the plate glass 11 (the maximum unevenness of the polished surface is 0.05 mm or less). The boundary between the curved edge formed on the end surface of the plate glass 11 by the first polishing step and the main surface of the plate glass 11 is smoother than the first polishing step (the maximum unevenness of the finished surface is 0.007 mm or less) A peripheral edge finishing step including a second polishing step to be processed is performed.

  The first polishing step is performed by a polishing method of a flat cylindrical wheel type polishing method in which the outer peripheral surface of the cylindrical wheel that rotates around the axial center is polished. The outer glass is formed so that the outer diameter of the intermediate portion becomes smaller, and the plate glass to be polished is polished into a curved shape protruding outward. Moreover, the outer peripheral surface of the cylindrical wheel is formed in a finer polished part than # 200. The peripheral portion of the plate glass 11 polished in the first polishing step has a surface irregularity of about 0.03 mm and is very fine, so that the internal stress of the plate glass 11 acts intensively. It becomes easy to avoid doing. Furthermore, since the polishing direction in the first polishing step is set along the longitudinal direction of the plate glass 11, the scratches associated with polishing are similarly formed along the longitudinal direction of the plate glass 11. It becomes easy to avoid concentration of thermal destruction force acting along the main surface of the plate glass 11.

The second polishing step is performed by a buffing polishing method in which polishing is performed using the outer peripheral surface of a polishing belt that is stretched around a biaxial rotating shaft. This buffing is also called superb finishing, and is generally polished with a belt made of sheepskin. When polishing, an aqueous solution of cerium oxide (a very fine particle size polishing powder) is used for the part to be polished. The surface roughness is reduced to 3 to 7 μm (almost equal to the surface roughness of the front and back surfaces of the plate glass), and it is possible to give a gloss and concentration of internal stress on the boundary occurs. Can be difficult. When this is converted into strength, it is about 39 MPa (4 kgf / mm ² ).

By the first polishing step and the second polishing step, it is possible to make it difficult to concentrate internal stress on the lower edge portion 11b of the plate glass 11, and in particular, avoid concentration of internal stress acting along the main surface of the plate glass 11. It becomes easy. As a result, it is possible to make it difficult to break even if it receives heat from a fire, and it is possible to reduce the stress by about 39 MPa (4 kgf / mm ² ) in terms of the stress applied by the heat strengthening treatment.

Further, after the peripheral edge finishing step, the glass sheet 11 is subjected to a heat strengthening treatment at a heating temperature of the glass softening point (720 to 730 ° C.) or lower and a cooling air blowing back pressure of 4.9 kPa (about 500 mmAq). The surface compression stress of the plate glass 11 by this heat strengthening process is about 167 MPa (17 kgf / mm ² ). Therefore, the edge strength of the plate glass 11 can be set to 206 MPa (about 21 kgf / mm ² ) by performing the heat strengthening process and the peripheral edge finishing step, and thus sufficient edge strength of the peripheral edge of the plate glass 11 is ensured. be able to.

  The spacer 13 is an aluminum long hollow body having a substantially rectangular cross section that accommodates a desiccant (not shown) therein, and has a thickness of, for example, 0.35 mm.

  The primary sealing material 15 is made of, for example, butyl rubber, in order to make it particularly difficult for water to pass through, and the thickness thereof is, for example, 0.25 mm.

  The secondary sealing material 16 is made of a silicon-based or polysulfide-based sealing material having a high adhesive force.

  The tape material 17 is made of metal and has a thickness of, for example, 50 μm. Further, the tape material 17 has a width larger than the thickness of the plate glass 11, and is attached to a lower edge portion 11 b of the plate glass 11 described later and a part of the outer surface side main surface of the plate glass 11. Further, the tape material 17 is stuck so that at least a part of the outer surface of the secondary sealing material 16 is exposed.

  Moreover, it is preferable that the adhesive material of the tape material 17 consists of an acrylic type, a silicon type, or a butyl type material. Thereby, adhesiveness with the plate glass 11 can be improved.

  FIG. 3 is a cross-sectional perspective view of the multilayer glass 10 in FIG. 2 as viewed from the plate glass 11 side.

  As shown in FIG. 3, in the multi-layer glass 10 held on the glass holding frame in a state of being raised from the horizontal, the peripheral edge portion is composed of an upper edge portion 10 a, a lower edge portion 10 b, and side edge portions 10 c and 10 d. And the peripheral part of the plate glass 11 is comprised by the upper edge part 11a, the lower edge part 11b, and the side edge parts 11c and 11d. The tape material 17 is attached to the lower edge portion 11 b of the peripheral edge portion of the multilayer glass 10.

  As shown in FIG. 1, the multilayer glass 10 is held on the sash 30 via the multilayer glass holding member 20. At this time, a part of the tape material 17 is interposed between the secondary sealing material 16 and the multilayer glass holding member 20, and the tape material 17 is interposed between the lower edge portion 11 b and the multilayer glass holding member 20. .

  As described above, according to the present embodiment, the multi-layer glass 10 has the tape material 17 adhered to a part of the peripheral portion of the plate glass 11, so that the peripheral portion of the plate glass 11 is likely to be damaged mainly during transportation. Is protected by the tape material 17, and the moisture that has entered the inside of the multi-layer glass 10 can be sufficiently drained, so that the quality can be improved while ensuring good drainage.

  Further, since the tape material 17 is adhered to the lower edge portion 11b of the plate glass 11, the lower edge portion 11b of the plate glass 11 that is easily damaged is protected by the tape material 17 and further formed in the multilayer glass 10. Moisture that has entered the hollow layer 14 can be sufficiently drained, so that the quality of the multilayer glass 40 can be improved while ensuring good drainage.

  Furthermore, since the tape material 17 is stuck so that at least a part of the outer surface of the secondary sealing material 16 is exposed, the water drainage that has entered the inside of the multilayer glass 10 is reliably secured. be able to.

  FIG. 4 is a view showing a modified example of the tape material 17 in FIG. 3, and (a) to (d) show first to fourth modified examples, respectively.

  4A to 4D, the tape material 51 is attached to the lower edge part 11b of the plate glass 11, a part of the side edge part 11c, and a part of the side edge part 11d (FIG. 4A). )). At this time, the tape material 51 is stuck over the predetermined length from each lower end of the plate glass 11 in the side edge part 11c and the side edge part 11d. Thereby, the manufacturing cost of the multilayer glass 10 can be reduced, protecting the side edge part 11c and the side edge part 11d of the plate glass 11. FIG.

  The tape material 52 is attached to the lower edge portion 11b and the side edge portions 11c and 11d of the plate glass 11 (FIG. 4B). Thereby, the side edge parts 11c and 11d can be reliably protected.

  Moreover, the tape material 53 is affixed on the lower edge part 11b of the plate glass 11, the side edge parts 11c and 11d, and a part of upper edge part 11a (FIG.4 (c)). At this time, the tape material 53 is stuck over the predetermined length from each upper end of the plate glass 11 in the upper edge part 11a. Thereby, the manufacturing cost of the multilayer glass 10 can be reduced, protecting the upper edge part 11a of the plate glass 11. FIG.

  Further, the tape material 54 is adhered to the lower edge portion 11b, the side edge portions 11c and 11d, and the upper edge portion 11a of the plate glass 11, that is, the entire peripheral edge portion of the plate glass 11 (FIG. 5D). Thereby, the upper edge part 11d of the plate glass 11 can be reliably protected.

  FIG. 5 is a partial cross-sectional view showing a modification of the multilayer glass 10 in FIG.

  In FIG. 5, a multi-layer glass 40 includes a laminated glass having a pair of plate glasses 41 and 42 to be described later, and a plate glass 43 arranged on the opposite side of the plate glass 41 with respect to the plate glass 42 and facing the plate glass 42 with a predetermined interval. Have.

  The multi-layer glass 40 includes a spacer 44 interposed between the plate glass 42 and the plate glass 43 via a primary sealing material 46, and plate glasses 42 and 43 outside the spacer 44 (outer peripheral edge side of the multi-layer glass 40). It has a secondary sealing material 47 that is filled in between and seals the spacer 44 from the outside, and a tape material 57 having a substantially L-shaped cross section that is attached to a part of the peripheral edge of the laminated glass. Dry air is sealed in the hollow layer 45 formed between the plate glass 42 and the plate glass 43.

  The laminated glass includes a pair of plate glasses 41 and 42 facing each other in a substantially upright state at a predetermined interval, a pair of intermediate films 48 and 49 interposed between the pair of plate glasses 41 and 42, and a pair of intermediate films. And a polycarbonate layer 50 interposed between 48 and 49.

  The plate glasses 41, 42, and 43 are made of, for example, float plate glass, and the outer peripheral surfaces at the respective lower edges are substantially perpendicular to the main surfaces of the plate glasses 41, 42, and 43. The intermediate films 48 and 49 are made of a polyvinyl butyral resin (PVB) film having a thickness of 0.3 to 4.0 mm, preferably 0.38 to 3.04 mm.

  The spacer 44 is an aluminum long hollow body having a substantially rectangular cross section that accommodates a desiccant (not shown) therein, and has a thickness of, for example, 0.35 mm.

  The primary sealing material 46 is made of, for example, butyl rubber, in order to make it particularly difficult for moisture to pass through, and the thickness thereof is, for example, 0.25 mm.

  The secondary sealing material 47 is made of a silicon-based or polysulfide-based sealing material having a high adhesive force.

  The tape material 57 is made of metal, and the thickness thereof is, for example, 50 μm. Further, the tape material 57 has a width larger than the thickness of the laminated glass having the plate glasses 41 and 42 and is attached to the lower edge portion of the laminated glass including the lower edge portion 41b of the plate glass 41 and the lower edge portion 42b of the plate glass 42. The Further, the tape material 57 is stuck so that at least a part of the outer surface of the secondary seal material 47 is exposed.

  According to this modification, the double-glazed glass 40 has the tape material 57 adhered to a part of the peripheral edge of the laminated glass, so that the peripheral edge of the laminated glass that is likely to be damaged during transportation is mainly protected by the tape material 57. Furthermore, the moisture that has entered the inside of the double-glazed glass 40 can be sufficiently drained, so that the quality can be improved while ensuring good drainage. Further, when a plasticizer such as oil or fat is added to the resin plate glass holding member 20, the plasticizer leaked to the inner surface of the plate glass holding member 20 due to secular change is the interface between the plate glass 41 and the intermediate film 48. It is possible to prevent entry into the interface between the plate glass 42 and the intermediate film 49, thereby improving the quality of the multilayer glass 40.

  Further, since the tape material 57 is adhered to the lower edge portions 41b and 42b of the laminated glass having the plate glasses 41 and 42, the lower edge portion of the laminated glass which is easily damaged is protected by the tape material 57, and further, the multilayer Moisture that has entered the hollow layer 45 formed in the glass 40 can be sufficiently drained, so that the quality of the multilayer glass 40 can be improved while ensuring good drainage.

  Furthermore, since the tape material 57 is stuck so that at least a part of the outer surface of the secondary seal material 47 is exposed, the water drainage that has entered the inside of the multilayer glass 40 is reliably secured. be able to.

  In the present embodiment, the tape material 17 is attached to the lower edge portion of the plate glass 11 and a part of the outer surface of the secondary sealing material 16, but is not limited thereto, and only the lower edge portion of the plate glass 11. It may be affixed to. The tape material 57 is attached to the lower edge portion of the laminated glass having the plate glasses 41 and 42 and a part of the outer surface of the secondary sealing material 47, but is not limited to this, and the lower edge of the laminated glass It may be attached only to the part.

  Further, the tape material 17 is attached to a part of the lower edge portion of the plate glass 11, but may be attached to a part of the lower edge portion of at least one of the pair of plate glasses 11 and 12. Moreover, although the tape material 57 is affixed on the lower edge part of the laminated glass which has a pair of plate glass 41 and 42, it is affixed on a part of lower edge part in at least 1 of the plate glass 41,42,43. Also good.

  Furthermore, although the tape material 17 is attached to a part or all of the side edge portions 11c and 11d of the plate glass 11, it may be attached to the side edge portion of at least one of the plate glasses 11 and 12. In addition, the tape material 17 is attached to a part or the whole of the upper edge portion 11 a of the plate glass 11, but may be attached to a side edge portion of at least one of the plate glasses 11 and 12.

  Moreover, although the thickness of the tape materials 17 and 57 is 50 micrometers, it is not restricted to this, It changes suitably according to the internal dimension of the multilayer glass holding member 20 in which the multilayer glass 10 is engage | inserted.

  Further, the tape members 17 and 57 are made of metal, but may be made of resin, and may be made of any material as long as the peripheral portion of the plate glass 11 or the plate glasses 41 and 42 can be protected.

  In the present embodiment, the outer peripheral surface of the lower edge portion 11b of the plate glass 11 is a curved surface protruding in the outer direction of the plate glass 11. However, the present invention is not limited to this, and at the lower edge portion of at least one of the plate glasses 11, 12. The curved surface which the outer peripheral surface protrudes in the outer side direction of the plate glass 11 and 12 may be sufficient. Moreover, the outer peripheral surface in each lower edge part of the plate glass 11 and 12 may be substantially perpendicular to the main surface of the plate glass 11 and 12.

  Moreover, although the plate glass 12 is a float plate glass, it is not restricted to this, For example, according to the above uses, for example, a plate glass, a ground glass provided with a light diffusing function by surface treatment, a glass with a mesh, a wire-inserted plate glass Various glass such as double tempered glass, low reflection glass, high transmission plate glass, ceramic plate glass, special glass having a heat ray or ultraviolet ray absorbing function, or a combination thereof can be appropriately selected and used.

  Furthermore, also about the composition of the plate glass 11, soda silicate glass, soda lime glass, borosilicate glass, aluminosilicate glass, various crystallized glass, etc. can be used. Further, the thickness of the pair of glass plates 11 and 12 can be selected as appropriate.

  In the present embodiment, the intermediate films 48 and 49 are composed of a film made of polyvinyl butyral resin (PVB). However, the present invention is not limited to this, and polyvinyl alcohol resin (PVA), polyvinyl acetal resin, polyvinyl chloride, and chloride. Vinyl / ethylene copolymer, vinyl chloride / ethylene / glycidyl (meth) acrylate copolymer, vinyl chloride / glycidyl (meth) acrylate copolymer, polyvinylidene chloride, vinylidene chloride / acrylonitrile copolymer, partially saponified It may be composed of ethylene / vinyl acetate copolymer, ethylene / (meth) acrylate copolymer, polyurethane resin, plastisol film made of vinyl chloride resin and alkylbenzyl phthalate, etc., and adhesion to glass, transparent From the viewpoints of safety and impact energy absorption Particularly in the automobile field, a film made of polyvinyl acetal resin having a thickness of about 0.1 to 1.5 mm made of a polyvinyl acetal resin typified by polyvinyl butyral resin and a plasticizer is most preferable. May be composed of a resin film such as partially saponified ethylene / vinyl acetate copolymer, vinyl chloride / ethylene / glycidyl (meth) acrylate copolymer.

  In addition, the intermediate films 48 and 49 may be functional films in which the intermediate film itself is provided with an ultraviolet cut property, an electromagnetic wave shielding property, or the like.

It is a partial section perspective view showing roughly composition of a double glazing body provided with double glazing concerning an embodiment of the invention. It is a fragmentary sectional view of the multilayer glass in FIG. It is the cross-sectional perspective view which looked at the multilayer glass in FIG. 2 from the plate glass side. It is a figure which shows the modification of the tape material in FIG. 3, (a)-(d) shows the 1st-4th modification, respectively. It is a fragmentary sectional view which shows the modification of the multilayer glass in FIG. It is a fragmentary sectional view of the conventional multilayer glass.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Multi-layer glass 11 Plate glass 11b Lower edge part 17 Tape material

Claims (2)

In the multilayer glass comprising a plurality of plate glasses facing each other in a substantially upright state at a predetermined interval from each other, the plurality of plate glasses is a pair of plate glasses made of heat strengthened plate glass subjected to heat strengthening treatment ,
A spacer interposed between the pair of plate glasses, a secondary sealing material that is filled between the pair of plate glasses outside the spacer and seals the spacer from the outside, and is attached to a peripheral portion of only the heat strengthened plate glass. With the tape material worn ,
The tape material, insulating glass, wherein the outer surface of the secondary seal member is adhered to expose. The outer peripheral surface at the peripheral portion of the heat reinforced plate glass according to claim 1 Symbol placement insulating glass, characterized in that a curved surface that protrudes outwardly of the heat reinforced plate glass.

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