JP2008222529A - Laminated glass and method of manufacturing laminated glass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laminated glass which can exhibit a satisfactory mechanical strength, can be produced stably and can provide good visual design effect. <P>SOLUTION: An intermediate film of the laminated glass 12 is constituted of a first intermediate film 22 and a second intermediate film 24, and a plurality of glass balls 26 and annular glass beads 28 having grain sizes of 0.5-2.5 mm are sealed between the first intermediate film 22 and the second intermediate film 24. Since this laminated glass 12 is hard to be broken even if a considerable degree of impact is applied, its mechanical strength is satisfactorily high, it is suitable for windows and external wall building materials. Also, it can be stably produced as laminated glass since it makes a bubble- or foam-containing glass sheet unnecessary and a glass sheet superior in flatness and smoothness can be used. Furthermore, a granular feeling can be satisfactorily expressed and good visual design effect can be achieved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a laminated glass and a method for producing the laminated glass, and more particularly, to a laminated glass for building materials used for windows and outer wall surfaces of buildings and the like, and a method for producing laminated glass having a design property. .

  As a glass plate for building materials, a glass plate having a design property is conventionally known. For example, Patent Document 1 proposes a glass plate with pores that gives a depth feeling to the glass plate. This porous glass plate is manufactured by filling flaky, small or granular glass into a refractory container such as cordierite and heat-treating it at a high temperature (700 to 1200 ° C.). It is manufactured using pores formed by gaps between pieces and grains, and additionally, pores generated inside the glass plate by reboil. Patent Document 1 also describes adjusting the visible light transmittance of a glass plate by adjusting the heat treatment temperature to control the number and size of pores.

  On the other hand, in Patent Document 2, in a laminated glass obtained by bonding two glass plates through a resin intermediate film, at least one glass plate is made a light-opaque glass plate, There is disclosed a laminated glass so as to obtain daylighting and privacy.

Patent Document 3 discloses a light-diffusing laminated glass in which translucent fine particles are uniformly dispersed in at least one layer other than the outermost layer of an interlayer film of laminated glass composed of at least three layers. Further, as the light-transmitting fine particles, it is disclosed that inorganic beads such as glass beads and silica gel beads are used. The average particle diameter of the light-transmitting fine particles is set to 100 μm or less so as not to reduce the strength of the intermediate film, It is described that the thickness is 1 μm or more so as not to lower the photorefractive function.
JP 2001-180953 A Japanese Patent Laying-Open No. 2005-8425 JP-A-7-330391

  However, since the glass plate with pores disclosed in Patent Document 1 contains pores in the glass itself, it is difficult to obtain sufficient mechanical strength, and it is used as a building material for windows and external walls that receive wind pressure. Had the disadvantage of being difficult. In addition, since it is difficult to adjust the number and size of pores in a single glass plate, there is also a problem that a visual design effect cannot be obtained sufficiently by changing the number and size of pores. there were.

  On the other hand, the laminated glass of Patent Document 2 uses, as at least one glass plate constituting the laminated glass, a bubble-containing glass that is a non-translucent glass plate, but the bubble-containing glass and the float glass plate are used. Due to the difference in thermal expansion coefficient and irregularities on the surface of the bubble-containing glass, cracks frequently occurred in the laminated glass manufacturing process, making it extremely difficult to manufacture.

  Moreover, since the particle size of the glass bead inherent in the intermediate adhesive layer of the laminated glass is as small as 1 to 100 μm, the laminated glass of Patent Document 3 cannot sufficiently express the granular feeling and obtains a good visual design effect. There was a drawback that it was not possible.

  The present invention has been made in view of such circumstances, laminated glass that can sufficiently obtain mechanical strength, can be stably produced, and can achieve a good visual design effect, and its An object is to provide a manufacturing method.

  In order to achieve the above object, the laminated glass according to claim 1 is a laminated glass constituted by interposing an intermediate film between at least two glass plates, wherein the intermediate film is at least a first intermediate film. And a second intermediate film, and a glass ball and / or glass bead having a particle size of 0.5 to 2.5 mm is enclosed between the first intermediate film and the second intermediate film. It is characterized by that.

  The laminated glass according to claim 1, wherein the intermediate film of the laminated glass is constituted by the first intermediate film and the second intermediate film, and the particle size is between the first intermediate film and the second intermediate film. Is configured by enclosing glass balls and / or glass beads of 0.5 to 2.5 mm.

  The method for producing a laminated glass according to claim 6, wherein the laminated glass comprises at least a first glass plate as the glass plate, wherein the intermediate film is interposed between at least two glass plates. A second glass plate, a first intermediate film and a second intermediate film as the intermediate film, the first intermediate film being placed on the upper surface of the first glass plate, A predetermined amount of glass balls and / or glass beads having a particle diameter of 0.5 to 2.5 mm is sprayed on the intermediate film 1 and the second intermediate film is placed on the glass balls and / or glass beads. The second glass plate is placed on the second intermediate film to form a glass laminate, and the glass laminate is heated at a predetermined temperature and pressed at a predetermined pressure to produce a laminated glass. It is characterized by .

  Laminated glass in which an intermediate film is interposed between at least two glass plates and the glass plates are bonded to each other has sufficient mechanical strength because it is difficult to break even when an impact is applied, and is suitable as a building material for windows and outer walls. It is. Further, even if the glass plate is broken by an impact, the broken pieces are adhered to the intermediate film, so that they are prevented from being scattered, and further, through holes are hardly formed, so that there is an advantage that safety and crime prevention are excellent. Furthermore, since this laminated glass has a glass ball and / or a glass bead between the first intermediate film and the second intermediate film in order to give a visual sense of depth, pores (bubbles) are present. Sufficient strength can be ensured for the glass sheet. Furthermore, since the particle size of the glass balls and / or glass beads is set to 0.5 to 2.5 mm, a granular feeling can be sufficiently expressed, and a visual design effect can be obtained satisfactorily. When the particle size is less than 0.5 mm, it is not possible to obtain a visual design because the granular feeling cannot be sufficiently expressed, and when the particle size exceeds 2.5 mm, due to the size of the particle size, It is not preferable because internal stress is generated in the glass plate during heating and pressure production of the laminated glass, and the glass plate may be damaged. In addition, the bubbles entrained around the glass balls and / or glass beads are not preferable because they cannot be removed during heating and pressure production of the laminated glass and remain in the product. In view of enhancing the design and reliably preventing breakage of the glass plate, the particle size is more preferably 1.4 to 1.9 mm. Further, by spraying glass balls and / or glass beads having different particle diameters in the range of 0.5 to 2.5 mm, laminated glass with higher visual design can be provided.

  As a glass plate of laminated glass, it is preferable to use soda lime glass produced by a float process. Since this glass plate is superior in strength and has a smooth surface as compared with the glass plate with pores disclosed in Patent Document 1, it can be stably produced without frequent cracks in the laminated glass production process. In addition, as a glass plate which comprises laminated glass, it can also be used combining the glass plate of a different composition, However, It is preferable to use combining the glass plate with a substantially equivalent thermal expansion coefficient, and the glass plate of the same composition is used. More preferably it is used.

  As the intermediate film, a thermoplastic resin film such as a well-known polyvinyl butyral resin having an adhesive function or a synthetic resin made of an ethylene vinyl acetate copolymer is used. The thickness of an intermediate film used for ordinary laminated glass (thickness before being made into laminated glass; the same shall apply hereinafter) is generally 0.4 mm. Between two intermediate films of this thickness, for example, When a glass ball and / or glass bead having a particle size of 2.5 mm is encapsulated, the glass ball and / or glass bead may break through the intermediate film and damage the glass plate during heating and pressure production of the laminated glass. In order to prevent this problem, the first intermediate film and the second intermediate film are each formed by superimposing a plurality of 0.4 mm thick intermediate films, respectively. It is preferable to enclose glass balls and / or glass beads between the membrane. The total thickness of the first intermediate film and the second intermediate film is preferably at least about 1.2 times the particle size of the glass balls and / or glass beads to be encapsulated. When the particle size is 1.4 to 1.9 mm, it is preferable to use three intermediate films each having a thickness of 0.4 mm as the first intermediate film and the second intermediate film. . Similarly, when the particle diameter is 0.5 to 2.5 mm, the first intermediate film and the second intermediate film are each formed by superposing four intermediate films having a thickness of 0.4 mm. Is preferred.

  A second aspect of the present invention is characterized in that, in the first aspect, the glass ball and / or the glass beads are sealed only in a part of the area of the laminated glass.

  The invention according to claim 7 is characterized in that, in claim 6, the glass balls and / or glass beads are dispersed only in a part of the area within the surface of the laminated glass.

  According to the second and seventh aspects of the present invention, the area where the glass balls and / or the glass beads are enclosed and the other area are formed in the plane of one laminated glass. This is preferable because a laminated glass with high design properties can be provided. When this laminated glass is used as a building material for windows and outer walls, the area where glass balls and / or glass beads are enclosed functions as a glass plate with high visual design, and the other areas are transparent. Since it functions as a high glass plate, a window and an outer wall surface with high design as a whole can be configured by appropriately setting the shape and size of each area within the surface of one glass plate.

  According to a third aspect of the present invention, in the second aspect of the present invention, the first intermediate film and the second intermediate layer may be provided in other areas except the partial area in which the glass balls and / or glass beads are enclosed. Between the membranes, a resin membrane for interposing gaps between the glass plates by enclosing the glass balls and / or glass beads is interposed.

  The invention according to claim 8 is the first intermediate film and the second intermediate film in other areas except for the partial area in which the glass balls and / or glass beads are encapsulated. The glass balls and / or glass beads are dispersed by interposing a resin film for aligning the gap between the glass plates by enclosing the glass balls and / or glass beads.

  According to the third and eighth aspects of the present invention, it is preferable to interpose a resin film having an adhesive function equivalent to that of the intermediate film in another area. Without this resin film, during heating and pressure production of laminated glass, internal stress may occur in the glass plate due to the difference in the gap, and the glass plate may be damaged. By interposing the resin film, generation of the internal stress can be suppressed, and breakage of the glass plate can be prevented.

  According to a fourth aspect of the present invention, in the second or third aspect, one of the two glass plates includes the partial area in which the glass balls and / or glass beads are enclosed. The other area excluding the part of the area is divided into two.

  The invention according to claim 9 is the invention according to claim 7 or 8, wherein one of the two glass plates is replaced with the partial area in which the glass balls and / or glass beads are enclosed. It is characterized by being divided into two areas other than the part of the area.

  According to the invention of Claims 4 and 9, by dividing the glass plate into two parts into some areas and other areas, no internal stress is generated in the glass plate during heating and pressure production of the laminated glass. Therefore, it is preferable. Thereby, damage to the glass plate can be prevented. Moreover, it is preferable to interpose a buffer material made of polycarbonate resin, for example, at the boundary between the two divided glass plates. Thereby, it is suppressed that the boundary part of the divided | segmented two glass plates contacts directly, and a chip | tip generate | occur | produces in the end surface of a glass plate.

  The invention according to claim 5 is the laminated glass having a three-layer structure according to any one of claims 1 to 4, wherein the laminated glass has an intermediate film interposed between each of the three glass plates. Each intermediate film is composed of at least the first intermediate film and the second intermediate film, and the glass balls and / or glass beads are interposed between the first intermediate film and the second intermediate film. It is characterized by being enclosed.

  According to the fifth aspect of the present invention, there is provided a laminated glass having a three-layer structure in which an intermediate film is interposed between each of three glass plates, and the first glass constituting each intermediate film. Since the glass balls and / or glass beads are enclosed between the intermediate film and the second intermediate film, a visual design effect can be obtained satisfactorily, and a window subjected to wind pressure, A strong laminated glass more suitable as a building material for an outer wall can be provided.

  In addition, it is preferable to frost-process the surface of at least 1 glass plate among laminated glasses to give a frost feeling. Thereby, the effect which adds light diffusibility and designability can be given. Moreover, even if a frost-like film is attached to the surface of the glass plate, light diffusibility and design can be imparted to the laminated glass.

  Furthermore, it is preferable that at least one glass plate of the laminated glass is colored glass such as milk white glass. Thereby, in addition to a feeling of depth, a color sensation can be given.

  At least one glass plate of the laminated glass may be glass whose surface has been surface-treated, heat ray reflective glass, or heat ray absorbing glass. Moreover, the surface of at least one glass plate of laminated glass may be coated with a heat ray reflective film or a heat ray absorption film. Further, a colored intermediate film or a PET film may be interposed between the adhesive layers of the two intermediate films. Furthermore, the glass balls and / or glass beads may be colored. By combining these glass plates, intermediate films, PET films, glass balls, and / or glass beads, laminated glass with high designability can be provided as a window and outer wall building material.

  According to the laminated glass according to the present invention, since an intermediate film is interposed between two glass plates, it is difficult to break even when an impact is applied, has sufficient mechanical strength, and is suitable as a building material for windows and outer walls. is there. Further, even if the glass plate is broken by an impact, the broken pieces are adhered to the intermediate film, so that they are prevented from being scattered, and furthermore, through holes are hardly formed, so that safety and crime prevention are excellent. Further, in order to give a visual sense of depth, glass balls and / or glass beads are included between the first intermediate film and the second intermediate film. Sufficient strength can be ensured, and a glass plate with pores (bubbles) is not required, and a glass plate with excellent smoothness can be used, so that it can be stably produced as a laminated glass. Furthermore, since the particle size of the glass balls and / or glass beads is 0.5 to 2.5 mm, the graininess can be sufficiently expressed, and the visual design effect can be obtained satisfactorily.

  Hereinafter, preferred embodiments of a laminated glass according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is an external view of a building 10 whose outer wall surface is made of laminated glass. The outer wall surface of the building 10 is configured by combining two types of laminated glass 12 and 14 according to the embodiment and a general transparent laminated glass 16. Each laminated glass 12, 14, 16 is attached to the housing side by being fitted into a frame material (not shown) constituting the housing of the building 10 or fixed to the housing via a bonding material (not shown). In addition, a sealing material (not shown) is placed on the joint portion of the adjacent laminated glass, and the adjacent laminated glasses are bonded and fixed to each other, thereby forming a flat outer wall surface.

  FIG. 2A is a plan view of the laminated glass 12 of the first embodiment, and FIG. 2B is a cross-sectional view of the laminated glass 12 taken along line BB in FIG. This laminated glass 12 is a laminated glass constituted by interposing an intermediate film between two glass plates 18 and 20, and the intermediate film is constituted by a first intermediate film 22 and a second intermediate film 24. Between the first intermediate film 22 and the second intermediate film 24, a large number of glass balls 26, 26... Having a particle diameter of 0.5 to 2.5 mm and ring-shaped glass beads 28, 28. It is configured to be enclosed. It is also possible to enclose only the glass balls 26, 26... Or to enclose only the glass beads 28, 28.

  The manufacturing method of the laminated glass 12 will be described. First, the first intermediate film 22 is placed on the upper surface of the glass plate (first glass plate) 18, and then the particle diameter is formed on the first intermediate film 22. ... And glass beads 28, 28... Having a thickness of 0.5 to 2.5 mm are evenly dispersed as shown in FIG. Next, the second intermediate film 24 is placed on the glass balls 26, 26... And the glass beads 28, 28, and the glass plate (second glass plate) 20 is placed on the second intermediate film 24. To constitute a glass laminate. Thereafter, the glass laminate is manufactured by heating at a predetermined temperature and pressurizing at a predetermined pressure with a known autoclave pressure bonding apparatus (not shown).

  The laminated glass 12 produced in this way is not easily broken even when an impact is applied, and therefore has sufficient mechanical strength, and is suitable as a building material for windows and outer walls as shown in FIG. Further, even if the glass plate 18 or the glass plate 20 is broken by an impact, the broken pieces are bonded to the first intermediate film 22 or the second intermediate film 24, so that scattering is prevented. It is excellent in safety and crime prevention. Further, the laminated glass 12 includes glass balls 26, 26... And glass beads 28, 28... Between the first intermediate film 22 and the second intermediate film 24 in order to give a visual sense of depth. Therefore, sufficient strength can be ensured for the glass plate containing pores (bubbles). Furthermore, since the glass balls 26, 26... And the glass beads 28, 28... Have a particle size of 0.5 to 2.5 mm, the graininess can be sufficiently expressed, and the visual design effect is excellent. Obtainable.

  If the particle size of the glass balls 26, 26... And the glass beads 28, 28... Is less than 0.5 mm, the graininess cannot be expressed sufficiently, so that the visual design cannot be obtained, and the particle size is 2.5 mm. Exceeds the above, due to the size of the particle size, internal stress is generated in the glass plates 18 and 20 during the heating and pressurizing manufacturing of the laminated glass (glass laminate) by the autoclave pressure bonding device, and the glass plates 18 and 20 This is not preferable because it may be damaged. Further, the bubbles entrained around the glass balls 26 and / or the glass beads 28 are not preferable because they cannot be removed during the heating and pressure production of the laminated glass and remain in the product. In view of enhancing the design and reliably preventing the glass plates 18 and 20 from being damaged, the particle size is more preferably 1.4 to 1.9 mm. Further, by spraying glass balls 26, 26... And glass beads 28, 28... Having different particle diameters in the range of 0.5 to 2.5 mm, laminated glass with higher visual design can be provided. .

  As the glass plates 18 and 20 of the laminated glass 12, it is preferable to use soda lime glass produced by a float method. Since the glass plates 18 and 20 are superior in strength and have a smooth surface compared to the glass plate with pores disclosed in Patent Document 1 whose surface is uneven, there is no frequent cracking in the laminated glass manufacturing process. Can be produced stably. In addition, soda lime glass produced by the float process is industrially manufactured in large quantities at low cost, and can be easily adapted to various sizes by cutting out from large sizes. Can be preferably used. The plate thickness of the glass plates 18 and 20 is preferably 6 mm to 12 mm. If the nominal thickness is 19 mm or more, the total thickness of the laminated glass becomes too thick, which is not preferable. A nominal thickness of 4 mm or less is not preferable because a problem in strength may occur depending on use conditions.

  As the intermediate films 22 and 24, a thermoplastic resin film such as a well-known polyvinyl butyral resin having an adhesive function or a synthetic resin made of an ethylene vinyl acetate copolymer is used. The thickness of an intermediate film used for ordinary laminated glass is generally 0.4 mm, and glass balls 26, 26... Having a particle diameter of 2.5 mm and glass beads 28 are interposed between two intermediate films having this thickness. , 28... Are encapsulated, the glass balls 26, 26... And the glass beads 28, 28. is there. In order to prevent this problem, as shown in FIG. 2B, a glass ball is interposed between the intermediate films 22 and 24 having a thickness of 1.6 mm in which four intermediate films a, b, c and d having a thickness of 0.4 mm are overlapped. 26, 26... And glass beads 28, 28. That is, the total thickness of the first intermediate film 22 and the second intermediate film 24 is at least about 1.2 times the particle size of the glass balls 26, 26... And / or glass beads 28, 28. Is preferred. When the particle diameter is 1.4 to 1.9 mm, three intermediate films each having a thickness of 0.4 mm are used as the first intermediate film 22 and the second intermediate film 24, respectively. Is preferred.

  FIG. 3A is a plan view of the laminated glass 14 of the second embodiment, and FIG. 3B is a cross-sectional view of the laminated glass 14 taken along the line BB in FIG. In the laminated glass 14 shown in the figure, glass balls 26, 26... And glass beads 28, 28... Are enclosed only in a part of the trapezoidal area 14A in the plane of the laminated glass 14, as shown in FIG. Configured. In this way, if the area 14A in which the glass balls 26, 26... And the glass beads 28, 28. Is preferable because a laminated glass 14 having a high thickness can be provided. When this laminated glass 14 is used as a building material for windows and outer walls, an area 14A in which glass balls 26, 26... And glass beads 28, 28. Since the other area 14B functions as a highly transparent glass plate, by appropriately setting the shape and size of each area 14A, 14B within the surface of one laminated glass 14, as a whole High design windows and outer wall surfaces can be configured.

  Further, as shown in FIG. 3 (B), this laminated glass 14 has a first intermediate area in the other area 14B except for the area 14A in which the glass balls 26, 26... And the glass beads 28, 28. Between the film 22 and the second intermediate film 24, a resin film 30 for interposing a gap between the glass plates 18 and 20 by enclosing the glass balls 26, 26... And the glass beads 28, 28. Yes. After the resin film 30 is placed on the first intermediate film 22, glass balls 26, 26... And glass beads 28, 28.

  Without this resin film 30, during the heating and pressurizing manufacturing of the laminated glass 14, internal stress is generated in the glass plates 18 and 20 due to the difference in the gap, and the glass plates 18 and 20 may be damaged. However, by interposing the resin film 30 for aligning the gap, the generation of internal stress can be suppressed, and the glass plates 18 and 20 can be prevented from being damaged. The resin film 30 is preferably made of a material having the same adhesion function as the intermediate films 22 and 24. In addition to the gap adjustment, the visual effect can be enhanced by the resin film 30.

  In FIG. 3B, a single intermediate film is shown as the first intermediate film 22 and the second intermediate film 24. However, as in FIG. 2B, a plurality of intermediate films are stacked. Thus, the first intermediate film 22 and the second intermediate film 24 may be configured.

  Furthermore, the glass plate 20 is divided into an area 14A in which glass balls 26, 26... And glass beads 28, 28... Are enclosed and another area 14B, which are divided into a glass plate 20A and a glass plate 20B.

  Thus, the glass plate 18 of the laminated glass 14 is divided into the glass plate 20A and the glass plate 20B. Since internal stress does not generate | occur | produce in the glass plates 18 and 20 at the time of a heating and pressurization manufacture, it is preferable. Thereby, damage to the glass plates 18 and 20 can be prevented. Moreover, it is preferable to interpose the buffer material 32 made of, for example, polycarbonate resin at the boundary between the two divided glass plates 20A and 20B. Thereby, it is suppressed that the boundary part of the divided | segmented two glass plate 20A and glass plate 20B contacts directly, and a chip | tip generate | occur | produces in the end surface of a glass plate.

  In order to prevent the buffer material 32 from protruding from the surfaces of the glass plates 20A and 20B after the production of the laminated glass, it is preferable to use a buffer material that is thinner than the thickness of the two glass plates 20A and 20B. In this case, since the recessed part along the buffer material 32 is formed in the surface of the glass plate 20, it is preferable to cast the sealing material 33 so that this recessed part may be plugged up. When this laminated glass 14 is used as an outer wall material in order to prevent water from entering from the boundary portion between the buffer material 32 and the two glass plates 20A and 20B, the boundary portion faces the indoor side. It is preferable to arrange in the above. Moreover, it is also preferable to use for the indoor side glass plate (internal skin) of the building of the double skin structure by which a glass plate is arrange | positioned double inside and outside at the housing opening part of a building.

  FIG. 4 is a cross-sectional view of a laminated glass 34 according to the third embodiment. This laminated glass 34 has three layers in which an intermediate film is interposed between each of three glass plates 18, 20, 36. A laminated glass having a structure in which each intermediate film is composed of a first intermediate film 22 and a second intermediate film 24, and the glass is interposed between each of the first intermediate film 22 and the second intermediate film 24. A laminated glass having a three-layer structure in which balls 26, 26,... And glass beads 28, 28,.

  Since the laminated glass 34 is a laminated glass having a three-layer structure as described above, the laminated glass 34 becomes a strong laminated glass 34 that is more suitable as a building material for windows and outer walls that receive wind pressure.

  FIG. 5A is a plan view of a laminated glass 38 according to the fourth embodiment, and FIG. 5B is a sectional view thereof. A laminated glass 38 shown in FIG. 3 is obtained by applying the laminated glass 14 shown in FIG. 3 to a laminated glass having a three-layer structure. As shown in FIG. 5B, two glass plates of an intermediate layer and an outermost layer are used. Reference numerals 20 and 20 respectively include two divided glass plates 20A and 20B. Each glass plate 20 </ b> A, 20 </ b> B is also partitioned by the buffer material 32, and a sealing material 33 is placed in a recess formed by the buffer material 32 on the outermost glass plate 20. In addition, although the two glass plates 20 and 20 were made into the division structure, it is not limited to this, Only the outermost glass plate 20 is good also as a division structure.

  The preferred embodiments of the present invention have been described in detail with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and various design changes and the like can be made without departing from the scope of the present invention. It is. For example, it is preferable that the surface of at least one glass plate 18 (or the glass plate 20 or the glass plate 36) of the laminated glasses 12, 14, 34, and 38 is frosted to have a frost feeling. Thereby, the effect which adds light diffusibility and designability can be given to the laminated glass 12,14,34. Moreover, even if a frost-like film is attached to the surface of the glass plate 18 (or the glass plate 20 or the glass plate 36), the light diffusibility and the design can be imparted to the laminated glasses 12, 14, 34, and 38. .

  Furthermore, it is preferable that at least one glass plate 18 (or the glass plate 20 or the glass plate 36) of the laminated glasses 12, 14, 34, and 38 is colored glass such as milk white glass. Thereby, in addition to a feeling of depth, color sense can be given to the laminated glass 12, 14, 34, 38.

  Furthermore, at least one glass plate 18 (or glass plate 20 or glass plate 36) of laminated glass 12, 14, 34, 38 is a glass whose surface has been surface-treated, heat ray reflective glass, or heat ray absorbing glass. It may be. Further, at least one glass plate 18 (or glass plate 20 or glass plate 36) of the laminated glasses 12, 14, 34, 38 may be coated with a heat ray reflective film or a heat ray absorbing film on the surface thereof. Further, tempered glass may be used. Further, a colored intermediate film or a PET film may be interposed between the adhesive layers of the intermediate films 22 and 24. Further, the glass balls 26, 26... And the glass beads 28, 28. By combining these glass plates, intermediate films, PET films, glass balls 26, 26,... And glass beads 28, 28, etc., laminated glasses 12, 14, 34 having high design properties can be provided as windows and outer wall building materials.

Exterior perspective view of a building whose outer wall surface is constituted by the laminated glass of the embodiment (A) is a top view of the laminated glass of 1st Embodiment, (B) is the sectional drawing. (A) is a top view of the laminated glass of 2nd Embodiment, (B) is the sectional drawing. Sectional drawing of the laminated glass of 3rd Embodiment (A) is a top view of the laminated glass of 4th Embodiment, (B) is the sectional drawing.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Building, 12 ... Laminated glass of 1st Embodiment, 14 ... Laminated glass of 2nd Embodiment, 14A ... Area where glass ball and glass bead were enclosed, 14B ... Glass ball and glass bead Unencapsulated area, 16 ... laminated glass, 18 ... first glass plate, 20 ... second glass plate, 20A ... divided glass plate, 20B ... divided glass plate, 22 ... first intermediate film , 24 ... second intermediate film, 26 ... glass balls, 28 ... glass beads, 30 ... resin film, 32 ... buffer material, 34 ... laminated glass of the third embodiment, 36 ... glass plate, 38 ... first Laminated glass of 4 embodiment

Claims (9)

In a laminated glass configured by interposing an intermediate film between at least two glass plates,
The intermediate film is composed of at least a first intermediate film and a second intermediate film, and a glass ball having a particle size of 0.5 to 2.5 mm between the first intermediate film and the second intermediate film And / or a laminated glass comprising glass beads enclosed therein.   The laminated glass according to claim 1, wherein the glass balls and / or glass beads are sealed only in a partial area in the plane of the laminated glass.   In other areas except the part of the area where the glass balls and / or glass beads are enclosed, the glass balls and / or glass beads are provided between the first intermediate film and the second intermediate film. The laminated glass according to claim 2, wherein a resin film for aligning a gap between the glass plates by sealing is interposed.   Of the two glass plates, one glass plate is divided into two parts: the part of the area in which the glass balls and / or glass beads are enclosed and the other area excluding the part of the area. The laminated glass according to claim 2 or 3.   The laminated glass is a laminated glass having a three-layer structure in which an intermediate film is interposed between each of three glass plates, and each intermediate film includes at least the first intermediate film and the second intermediate film. The laminated glass according to any one of claims 1 to 4, wherein the glass balls and / or glass beads are enclosed between each of the first intermediate film and the second intermediate film. In the method for producing a laminated glass constituted by interposing an intermediate film between at least two glass plates,
While comprising at least a first glass plate and a second glass plate as the glass plate, comprising a first intermediate film and a second intermediate film as the intermediate film,
The first intermediate film is placed on the upper surface of the first glass plate, and a predetermined amount of glass balls and / or glass beads having a particle diameter of 0.5 to 2.5 mm is sprayed on the first intermediate film. The second intermediate film is placed on the glass balls and / or glass beads, the second glass plate is placed on the second intermediate film to form a glass laminate, and the glass laminate A method for producing a laminated glass, characterized in that a laminated glass is produced by heating a body at a predetermined temperature and pressurizing at a predetermined pressure.   The method for producing a laminated glass according to claim 6, wherein the glass balls and / or glass beads are dispersed only in a partial area within the surface of the laminated glass.   Encapsulation of glass balls and / or glass beads between the first intermediate film and the second intermediate film in other areas excluding the partial area where the glass balls and / or glass beads are enclosed The method for producing a laminated glass according to claim 7, wherein the glass balls and / or glass beads are dispersed through a resin film for aligning the gaps between the glass plates.   One of the two glass plates is divided into two parts: the part of the area in which the glass balls and / or glass beads are encapsulated and the other area excluding the part of the area. The manufacturing method of the laminated glass of Claim 7 or 8.

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