JP2005206387A - Glass laminate and its production method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass laminate which suppresses the nonuniformity of pores generated during the formation of a foamed layer, has high heat insulation properties and strength necessary for the use as a wall covering material, a flooring material, or the like of a building, and has good designability; and a production method of the same. <P>SOLUTION: A beadlike foamable glass raw material containing a foaming agent is deposited in a layered state to form a laminar deposit 1A; then plate glass 2 is placed on the upper side of the laminar deposit 1A of the beadlike foamable glass raw material; and the beadlike foamable glass raw material of the laminar deposit 1 and the plate glass 2 are simultaneously heated. Thus, the beadlike foamable glass raw material of the laminar deposit 1A is foamed and baked to form a foamed glass layer 1, and the lower surface of a plate glass layer 2 composed of the plate glass and the upper surface of the foamed glass layer 1 are melt bonded and integrated to each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a laminated glass body formed by laminating a plurality of glass layers such as a foamed glass layer and a method for producing such a laminated glass body.

Conventionally, as this type of technology, for example, there is a technology described in Patent Document 1.
JP-A-8-231243

  In the technique described in Patent Document 1, a glassy multi-foamed layer is prepared by firing a glassy particle crushed as a raw material, a foaming agent typified by calcium carbonate, and a binder. ing.

  However, with the technique described in Patent Document 1, the foaming agent is not uniformly dispersed in the manufacturing process. As a result, there has been a problem that the heat insulation characteristics of the foamed layer are biased or the strength is lowered due to non-uniformity of pores. In addition, as a conventional technique, it is known to suppress delamination by sandwiching an intermediate foam glass layer between layers having a significant difference in thermophysical properties, but a wall covering material of a building by sandwiching an intermediate layer, When used as flooring, etc., it requires careful handling during maintenance and maintenance management after enforcement, leaving the problem that it is not particularly suitable as an exterior material.

  Therefore, the present invention suppresses the non-uniformity of pores generated during the formation of the foamed layer, has high heat insulation and strength necessary for use as a building wall covering, floor covering, etc., and has a design property. It is an object of the present invention to provide a laminated glass body having both of the above and a method for producing such a laminated glass body.

  The laminated glass body according to claim 1 is formed by laminating a bead-shaped foam glass raw material containing a foaming agent into a layered deposit, and placing a plate glass on the upper surface of the layered deposit of the bead-shaped foam glass raw material. The beaded foam glass raw material of the layered deposit and the plate glass are simultaneously heated to foam and fire the beaded foam glass raw material of the layered deposit to form a foamed glass layer, and a plate glass made of the plate glass The lower surface of the layer and the upper surface of the foam glass layer were welded together to be integrated.

  The laminated glass body according to claim 2 is the structure according to claim 1, further comprising a bead-shaped foamed glass raw material having a particle diameter of 200 to 800 μm, which is formed by integrating the vitreous and the foaming agent, in a layered form. The beaded foam glass raw material is foamed by placing the plate glass on the upper surface of the layered deposit of the beaded foam glass raw material and simultaneously heating the beaded foam glass raw material and the plate glass. The foamed glass layer was formed by firing, and the lower surface of the plate glass layer made of the plate glass and the upper surface of the foamed glass layer were welded together to be integrated.

  The laminated glass body according to claim 3 is the structure of claim 1 or 2, wherein the plate glass is made of a transparent plate glass, a pigment is applied to the lower surface of the transparent plate glass to form a colored portion, and then the layered deposit By placing the plate glass on the upper surface and simultaneously heating the beaded foam glass raw material and the plate glass, the beaded foam glass raw material is foamed and fired to form a foam glass layer, and the foam glass layer The upper surface of the glass plate and the lower surface of the plate glass layer are welded and integrated with each other, and a colored portion is disposed between the upper surface of the foam glass layer and the lower surface of the plate glass layer.

  The laminated glass body according to claim 4 is the structure of claim 1 or 2, wherein the plate glass is made of transparent plate glass, and a pigment is applied to the upper surface of the layered deposit of the beaded foam glass raw material to form a colored portion. Then, the bead-like foaming is performed by placing the plate glass on the upper surface of the layered deposit on which the colored portion is formed so as to shield the colored portion and simultaneously heating the bead-like foamed glass raw material and the plate glass. The glass raw material is foamed and fired to form a foam glass layer, and the lower surface of the plate glass layer and the upper surface of the foam glass layer are welded together to form an upper surface of the foam glass layer and the lower surface of the plate glass layer. A colored portion was arranged between the two.

  The laminated glass body according to claim 5 is the structure according to claim 4, wherein the plate glass is further made of a transparent plate glass, and before the colored portion is formed on the upper surface of the layered deposit of the bead-like foamed glass raw material or the At any stage after forming the colored portion, the upper surface of the layered deposit of the beaded foam glass raw material is embossed to form an uneven pattern on the colored portion, and then the plate glass is placed on the upper surface of the layered deposit. The beaded foam glass raw material and the plate glass are heated simultaneously to form and foam the beaded foam glass raw material to form a foamed glass layer, and the lower surface of the plate glass layer and the foamed glass layer. The upper surface of each was welded and integrated.

  The laminated glass body according to claim 6 is the configuration according to claim 1 or 2, wherein the plate glass is made of a transparent plate glass, and the upper surface of the layered deposit of the bead-like foamed glass raw material is embossed to provide an uneven pattern, The plate glass is placed on the upper surface of the layered deposit on which the colored portion is formed so as to cover the uneven pattern, and the beaded foam glass raw material is foamed by simultaneously heating the beaded foam glass raw material and the plate glass. In addition, a foamed glass layer was formed by firing, and the lower surface of the plate glass layer and the upper surface of the foamed glass layer were welded together to be integrated.

  The laminated glass body according to claim 7 deposits the first bead-shaped foamed glass raw material having a substantially spherical shape, in which the first vitreous material and the first foaming agent are integrated, into a layered deposit, A second bead-shaped foamed glass raw material having a substantially spherical shape in which a glassy material having a composition substantially equivalent to the first glassy material and a second foaming agent having a composition different from that of the first foaming agent are integrated is formed by wet molding. A plate-like body formed into a substantially flat plate shape is placed on the upper surface of the layered deposit of the first bead-shaped foamed glass material, and the first bead-shaped foamed glass material of the layered deposit and the plate The first bead-like foamed glass raw material of the layered deposit is foamed and fired to form a first foamed glass layer by simultaneously heating the sheet-like body, and the second bead-like shape of the plate-like body When the foam glass raw material is foamed and fired to form the second foam glass layer, Was an upper surface of the lower surface and the first foam glass layer of the second foam glass layer so as to integrally welded to each other.

  In the method for producing a laminated glass body according to claim 8, a bead-shaped foamed glass raw material having a particle diameter of 200 to 800 μm and having a vitreous particle and a foaming agent integrated is continuously deposited in a layered manner on a belt conveyor. A layered deposit, a placing step of continuously placing plate glass on the upper surface of the beaded foam glass raw material at a predetermined interval, a beaded foam glass raw material of the layered deposit, and By heating the plate glass simultaneously, the bead-shaped foam glass raw material of the layered deposit is foamed and fired to form a foam glass layer, and a lower surface of the plate glass layer made of the plate glass and an upper surface of the foam glass layer are formed. A heating step of welding and integrating each other.

  The manufacturing method of the laminated glass body which concerns on Claim 9 integrates the preparatory process which prepares transparent plate glass, the vitreous material which consists of a composition substantially equivalent to the said plate glass, and a foaming agent, and is substantially spherical with a particle size of 200-800 micrometers. A preparation step for preparing the bead-shaped foam glass raw material, a deposition step for continuously depositing the bead-shaped foam glass raw material on a belt conveyor to form a layered deposit, a lower surface of the plate glass, and the layered deposit A step of forming a colored portion by applying a pigment to at least one of the upper surfaces of the glass plate, and the plate glass continuously on the upper surface of the layered deposit of the beaded foam glass raw material so as to cover the colored portion The beaded foam glass raw material of the layered deposit is heated by simultaneously placing the beaded foamed glass raw material of the layered deposit and the plate glass. With foam and baked to form a foam glass layer, and a heating step of integrating the upper surface of the lower surface and the foam glass layer of the sheet glass layer made of the plate glass welded to each other.

  The method for manufacturing a laminated glass body according to claim 10 is the manufacturing method according to claim 8 or 9, wherein the heating step is performed in a first temperature range in which a surface portion including a lower surface portion of the plate glass is melted. 1 and a temperature range higher than the first temperature range, the vitreous material of the beaded foam glass material of the layered deposit is melted, and the beaded foamed glass material of the layered deposit is welded to each other. A second heating step in which heating is performed in a second temperature range; and a third temperature range in which the foaming agent of the bead-like foamed glass raw material of the layered deposit is foamed in a temperature range higher than the second temperature range. A third heating step for heating, and the bead-shaped foam glass raw material of the layered deposit and the plate glass are transferred to the first heating step, the second heating step, and the third heating step by the belt conveyor. And in order.

  Since the laminated glass body according to claim 1 and claim 2 is configured as described above, it is possible to suppress non-uniformity of pores generated when the foamed layer is formed and to have high heat insulation. Moreover, since an intermediate | middle layer is not included between the said plate glass layer and the said foam glass layer, it has the specific effect of having high intensity | strength and having designability.

  Since the laminated glass body according to claim 3 is configured as described above, in addition to the operations and effects similar to those of claims 1 and 2, the design properties are further improved by applying a pigment to the lower surface of the transparent plate glass and coloring it. In particular, the sheet glass layer has a profound feeling and high-class feeling, so that it has an effect that it is rich in beauty. In addition, since the colored portion is disposed between the foam glass layer and the plate glass layer and is effectively protected from the outside, in a product patterned on the surface of a conventional plate glass, the pattern is easily scratched, and the like. It eliminates the disadvantage of being weak in chemical resistance, abrasion resistance, stain resistance, etc., and exhibits the effect that the original characteristics of the pigment can be maintained.

  Since the laminated glass body according to claim 4 is configured as described above, in addition to the same effects as in claims 1 and 2, the laminated glass body is further colored by applying a pigment to the upper surface of the layered deposit of the bead-shaped foamed glass material. By placing the plate glass so as to shield the colored portion, the same effect as described in claim 3 is exhibited.

  Since the laminated glass body according to the fifth aspect is configured as described above, in addition to the same effects as the first and second aspects, before the colored portion is formed on the upper surface of the layered deposit of the beaded foam glass raw material, Alternatively, at any stage after forming the colored portion, the upper surface of the layered deposit of the bead-shaped foamed glass raw material is embossed to provide an uneven pattern on the colored portion, and then the plate glass is formed on the upper surface of the layered deposit. In addition to having the same effect as described in claim 4, the variation of the pattern due to the combination of the concavo-convex pattern and the colored portion is drastically increased, and the design can be further improved. .

  Since the laminated glass body according to the sixth aspect is configured as described above, in addition to the same effects as the first and second aspects, the upper surface of the layered deposit of the bead-like foamed glass raw material is embossed to provide an uneven pattern. Thereafter, by placing the plate glass so as to cover the concavo-convex pattern on the upper surface of the layered deposit on which the colored portion is formed, the same effect as described in claim 3 is obtained, and the colored concavo-convex pattern of claim 5 Vivid uneven patterns with different taste can be obtained.

  Since the laminated glass body according to the seventh aspect is configured as described above, the laminated glass body has a specific effect of combining heat insulating properties and strength by superposing foam glass layers having different compositions. In addition, when the second beaded foam glass raw material is placed on the upper surface of the first beaded foam glass raw material, the second beaded foam glass raw material is formed into a substantially flat plate shape by wet molding, Workability can be improved by using the body.

  Since the manufacturing method of the laminated glass body according to claim 8 is configured as described above, the distribution of pores generated at the time of forming the foamed glass layer is made uniform, particularly by the deposition process, and it has high heat insulation and strength, and It has a unique effect of improving productivity. In addition, by placing the plate glass in accordance with the cutting interval of the continuous fired body (consisting of the foam glass layer and the plate glass layer) corresponding to the width or length of the final product (laminated glass body), particularly in the placing step. The fired body can be efficiently cut (cut) between adjacent plate glasses, and the working efficiency of cutting the laminated glass body can be improved. Further, particularly in the heating step, the bead-like foam glass raw material of the layered deposit and the plate glass are simultaneously heated, whereby the adhesion between the plate glass layer and the foam glass layer can be improved.

  Since the manufacturing method of the laminated glass body which concerns on Claim 9 was comprised as mentioned above, in addition to the effect similar to Claim 8, by preparing a transparent plate glass beforehand by a preparatory process, the transparency of a plate glass layer is also after manufacture. It can be maintained, has a good appearance, and reduces the number of manufacturing steps, thereby improving work efficiency and reducing costs. In addition, the preparation process allows the glassy material and the foaming agent to be uniformly distributed during the preparation of the raw materials. In addition, since the pigment is applied and colored on at least one of the lower surface of the plate glass and the upper surface of the layered deposit, particularly in the coloring step, the design is improved. In addition, since the plate glass is placed on the upper surface of the layered deposit so as to cover the colored portion in the placing step, the colored portion is arranged between the layered deposit and the plate glass in the subsequent heating step, and the effect from the outside. Protected. As a result, it is possible to improve characteristics such as chemical resistance, abrasion resistance, and stain resistance of the pigment in the colored portion.

  Since the manufacturing method of the laminated glass body which concerns on Claim 10 was comprised as mentioned above, since the lower surface of the said plate glass fuse | melts in the said 1st heating process, since the plate glass has a high viscosity, the fusion | melting part is physical. Therefore, it does not penetrate into the bead-shaped foamed glass raw material of the layered laminate. Further, in the second heating step, the bead-shaped foamed glass raw materials of the layered deposit are welded and integrated with each other, and the lower surface of the plate glass layer is welded to the upper surface of the integrated layered deposit. At this time, although the foaming agent of the bead-shaped foamed glass raw material may start to foam, the second temperature range is not high enough to promote sufficient foaming, so foaming is insufficient. In the third heating step, foaming of the bead-shaped foamed glass raw material of the layered deposit is sufficiently advanced and firing is completed to form the foamed glass layer. Thereby, the laminated glass body which the lower surface of the said plate glass layer and the upper surface of the said foamed glass layer welded together and can be obtained can be obtained. At this time, a laminated glass body having a two-layer structure of the plate glass layer and the foam glass layer is formed substantially without forming a layered intermediate layer having a thickness at the melted portion on the lower surface of the plate glass layer and the upper surface of the foam glass layer. can do.

  The best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described below. Throughout each embodiment, the same members, elements, or parts are denoted by the same reference numerals, and the description thereof is omitted.

Embodiment 1
1 is a cross-sectional view showing a laminated glass body according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the laminated glass body according to Embodiment 1 has a layered deposit formed by laminating a bead-shaped foam glass raw material containing a foaming agent to form a layered deposit of the bead-shaped foam glass raw material. By placing a plate glass on the upper surface and simultaneously heating the beaded foam glass raw material of the layered deposit and the plate glass, the beaded foam glass raw material of the layered deposit is foamed and fired to form the foamed glass layer 1. While forming, the lower surface of the plate glass layer 2 which consists of the said plate glass, and the upper surface of the said foam glass layer 1 are mutually welded and integrated. That is, the laminated glass body according to Embodiment 1 has a predetermined plate shape such as a substantially rectangular flat plate shape including the foam glass layer 1 and the plate glass layer 2. The foam glass layer 1 has a large number of pores (closed pores) 1a inside. In addition, as long as it is set as the laminated body shape which laminated | stacked the foam glass layer 1 and the plate glass layer 2, the shape of a laminated glass body can be made into a desired shape. For example, when the laminated glass body of Embodiment 1 is used as a tile application, the laminated glass body is usually a rectangular flat plate having a predetermined size.

  As the material of the plate glass constituting the plate glass layer 2, there are usually used soda lime glass, aluminosilicate glass, borosilicate alkali glass, etc., among which soda lime glass is particularly preferably used. be able to. Moreover, as a raw material of the foam glass layer 1, the bead-shaped foam glass raw material containing foaming agents, such as a calcium carbonate and a dolomite, can be used. As a raw material of the foam glass layer 1, a bead-shaped foam glass material having a substantially spherical shape with a particle size of 200 to 800 [mu] m, in which vitreous and a foaming agent are integrated, is preferably used. Further, as the glassy material of the bead-shaped foamed glass raw material, soda-lime-based glassy, aluminosilicate-based glassy, borosilicate alkali-based glassy, etc. can be adopted. It is preferable to use a beaded soda-lime-based glass raw material containing calcium carbonate. When such a bead-like soda-lime glass material is used as the material for the foam glass layer 1, the nonuniformity of the pores 1a generated when the foam glass layer 1 is formed is suppressed, and the size of the closed pores 1a in the foam glass layer 1 is suppressed. Can be obtained stably. Further, it is preferable that the plate glass is formed from soda-lime glass and the vitreous material of the bead-like foamed glass is formed from a glass material having a composition substantially equivalent to the plate glass (soda lime glass). In this way, effects such as better welding and joining of the foam glass layer 1 and the plate glass layer 2 can be obtained.

  Here, the “bead shape” is not a powdery or irregular shape like a conventional glass raw material, but a regular shape having a certain substantially spherical shape (substantially spherical, substantially elliptical, etc.). Means things. Thus, when the raw material of the foamed glass layer 1 is in the form of beads, when the beaded foamed glass raw material is deposited in layers on a belt conveyor or the like at the time of manufacture to form a layered deposit, A large number of constant gaps are formed according to the spherical shape and particle size of the bead-shaped glass raw material, and heat is efficiently and evenly transmitted to the inside of the layered deposit at the time of heating and firing, so that the foamed glass layer 1 is uniformly foamed and Firing can be promoted, the size of the closed pores 1a in the foamed glass layer 1 can be made uniform, and the dimensional stability of the foamed glass layer 1 can be improved. In addition, a large number of constant gaps corresponding to the spherical shape and particle size are formed between the surface of the belt conveyor and the lower surface of the layered deposit of the bead-like foamed glass raw material. Heat efficiently enters between the surface and the bottom surface of the layered deposit, can promote uniform firing and foaming of the bottom surface of the foam glass layer 1, and improve the smoothness of the bottom surface of the foam glass layer 1 and the like. Can do. Similarly, a large number of constant gaps corresponding to the spherical shape and the particle diameter are formed between the upper surface of the layered deposit of the bead-shaped foam glass raw material and the lower surface (boundary surface) of the plate glass to be the plate glass layer 2, At the time of firing, heat efficiently enters between the upper surface of the layered deposit and the lower surface of the plate glass, which can promote uniform firing and foaming of the foam glass layer 1 at the boundary surface, and the boundary surface (welded surface). It is possible to improve the weldability.

  Such beaded soda-lime glass raw material is, for example, a soda-lime glass raw material obtained by finely pulverizing waste glass or bottle glass, and a foaming agent composed of calcium carbonate is mixed, and a device such as a granulator or a spray dryer is used. And it can manufacture by integrating this mixture and making it the said spherical shape with the said particle size of 200-800 micrometers. Thereby, the bead-shaped foam glass raw material which contains the calcium carbonate type foaming agent substantially uniformly in the inside and the outer periphery of the soda-lime type glassy material in each of the substantially spherical granular materials can be obtained. In addition to the above composition, a pigment (colorant), bentonite, or the like can be further mixed and integrated.

As described above, when using a bead-shaped foamed glass raw material having a substantially spherical particle diameter of 200 to 800 μm and produced under the conditions described later, the porosity in the foamed glass layer 1 is in the range of about 70 to 80%. Preferably, an optimum value of 0.76 (about 76%) (bulk density of foam layer 0.6 (g / cm ³ ) / density of sheet glass 2.5 (g / cm ³ ) = ratio of glassy material in foam layer 0.24, 1 -It is possible to stably produce a laminated glass body in which the glassy ratio in the foamed layer is 0.24 = porosity 0.76). Moreover, as shown in FIG. 1, since the laminated glass body of Embodiment 1 does not contain an intermediate | middle layer between the said plate glass layer 2 and the said foamed glass layer 1, it has high intensity | strength and has designability. It has a unique effect.

  The laminated glass body according to the first embodiment configured as described above can suppress nonuniformity of the pores 1a generated when the foamed layer is formed, and can have high heat insulating properties. Moreover, since an intermediate | middle layer is not included between the said plate glass layer and the said foam glass layer, it has the specific effect of having high intensity | strength and having designability.

Manufacturing method Next, the manufacturing method of the laminated glass body which concerns on Embodiment 1 is demonstrated.
FIG. 2 is an explanatory diagram showing an outline of the laminated glass body manufacturing apparatus and manufacturing method according to Embodiment 1 of the present invention.
As shown in FIG. 2, the laminated glass body manufacturing apparatus according to Embodiment 1 is a continuous manufacturing apparatus 11 that continuously manufactures a laminated glass body. The manufacturing apparatus 11 moves a steel endless belt 13 in a length direction at a predetermined speed by conveyor drive rollers 12a and 12b arranged at both ends, and transfers a manufacturing raw material placed on the upper surface of the endless belt 13 in a transfer direction (see FIG. 2 to the left). In addition, as the endless belt 13, the metal fiber material which consists of stainless steel etc. which has sufficient heat resistance is made into mesh shape, and what was formed in the conveyor belt shape which has flexibility can be used conveniently. . A discharger 14 for discharging liquid alumina (Al ₂ O ₃ ) A is disposed above the conveyor drive roller 12 a at one end, that is, above the most downstream position of the endless belt 13. The discharger 14 discharges liquid alumina (Al ₂ O ₃ ) A onto the upper surface (raw material mounting surface) of the endless belt 13 and applies it to the entire surface so as to form a thin layer with a uniform thickness. This prevents the bead-like foamed glass raw material from dropping from the gap between the mesh-like endless belt 13. A recovery container 15 is disposed below the discharger 14 and recovers liquid alumina (Al ₂ O ₃ ) A that has fallen from the endless belt 13. A hopper 16 for supplying the bead-shaped foamed glass raw material B of the foamed glass layer 1 is disposed above the endless belt 13 downstream of the conveyor drive roller 12a at one end. The hopper 16 continuously drops and supplies the bead-shaped foamed glass raw material B onto the upper surface of the endless belt 13.

  A gate 17 is disposed above the endless belt 13 downstream of the hopper 16. The gate 17 has a rectangular thin plate shape with a predetermined length extending in the width direction of the endless belt 13, and is moved up and down by a driving device (not shown) so that its lower end position can be adjusted. That is, the gate 17 is smaller than the first position where the first gap corresponding to the thickness of the foam glass layer 1 is held between the lower end and the upper surface of the endless belt 13 and the first gap ( The position can be adjusted between the second position and the second gap. At the first position of the gate 17, a predetermined amount of the bead glass material B supplied from the hopper 16 to the endless belt 13 stays on the downstream side of the gate 17, and the bead glass is transferred along with the transfer of the endless belt 13. The raw material B is made into a layered deposit 1B having the same thickness as the first gap, and transferred to the downstream side of the gate 17. The first gap is set so that the foamed glass layer 1 of the laminated glass body as the final product has a desired thickness in consideration of the foaming rate of the bead-like foamed glass raw material of the layered deposit 1B. To do.

  On the other hand, the gate 17 is positioned at the second position intermittently for a short time at regular time intervals, so that the cutout grooves G are formed at regular intervals in the layered deposit 1A transferred by the endless belt 13. It has become. The fixed distance interval between the break grooves G is set corresponding to the width or length of the foam glass layer 1 of the laminated glass body as the final product. Thereby, the foamed glass layer 1B after baking and cooling the layered deposit 1A can be easily broken at the break groove G portion. It is also possible to adjust the second position of the gate 17 so that the second gap is zero, that is, the layered deposit 1A is completely separated at the breaking groove G. However, in this case, there is a possibility that the lower end of the gate 17 comes into contact with the alumina layer applied to the upper surface of the endless belt 13 and scrapes off the alumina layer. Therefore, as described above, a slight gap is provided as the second gap. It is preferable. The length of the gate 17 can be changed and adjusted within the range of the width of the endless belt 13, and the width of the layered deposit 1A can be adjusted accordingly.

  A spray device 18 is disposed downstream of the gate 17 and above the endless belt 13 so that a colored liquid made of a pigment can be applied to the upper surface of the layered deposit 1A. The spray device 18 sprays the colored liquid at a predetermined timing corresponding to the transfer speed of the layered deposit 1A, and can freely apply a pattern or a colored portion of a desired form to a desired position on the upper surface of the layered deposit 1A. . The spray device 18 is provided so as to face the entire width of the layered deposit 1A, and a desired pattern or colored portion can be applied to the entire width of the layered deposit 1A. Thus, when a plurality of laminated glass bodies as a final product are obtained by cutting the layered deposit 1A in the width direction, a desired pattern or colored portion is formed in each laminated glass body by a single coloring process. be able to. On the downstream side of the spray device 18, above the endless belt 13, an embossing roller 19 having a predetermined uneven portion formed on the outer peripheral surface is disposed so as to extend in the width direction of the endless belt 13. The embossing roller 19 is movable up and down between a retreat position spaced upward from the upper surface of the layered deposit 1A and a embossing position whose outer peripheral surface is in contact with the upper surface of the layered deposit 1A. The embossing roller 19 descends from the retracted position to the embossing position at a predetermined timing corresponding to the transfer speed of the layered deposit 1A, rolls on the upper surface of the layered deposit 1A, and corresponds to the uneven portion of the outer peripheral surface. The concavo-convex pattern to be formed can be formed at a desired position of the layered deposit 1A. The spray device 18 may be provided on the upstream side of the embossing roller 19 as described above, but may be provided on the downstream side of the embossing roller 19.

  Although not shown, in the vicinity of the endless belt 13 on the downstream side of the spray device 18 and the embossing roller 19, there is disposed a placement device that can place and place the plate glass 2A in the center of the upper surface of the layered deposit 1A. ing. In addition, a heating furnace including a first heating furnace 20a, a second heating furnace 20b, and a third heating furnace 20c is transferred on the endless belt 13 and the endless belt 13 on the downstream side of the mounting device. It arrange | positions continuously so that the layered deposit 1A and the plate glass 2A may be accommodated. The heating furnace heats and sinters the layered deposit 1 </ b> A and the sheet glass 2 </ b> A transferred by the endless belt 13. Specifically, each of the first heating furnace 20a, the second heating furnace 20b, and the third heating furnace 20c can set separate heating conditions or firing conditions (temperature, atmosphere, atmospheric pressure, etc.), The layered deposit 1A and the plate glass 2A on the endless belt 13 are sequentially heated and fired under separately set heating conditions. Further, a slow cooling chamber 21 is continuously provided on the downstream side of the third heating furnace 20c, and the fired layered deposit 1A and the plate glass 2A are accommodated and gradually cooled. In FIG. 2, for convenience of explanation, the slow cooling chamber 21 is shown shorter than the first to third heating furnaces 20a, 20b, and 20c, but in actuality, the slow cooling is performed so that a necessary slow cooling time can be secured. The chamber 21 is about several times as long as the first to third heating furnaces 20a, 20b, and 20c.

Next, a method for manufacturing the laminated glass body according to Embodiment 1 using the continuous manufacturing apparatus 11 will be described.
The manufacturing method of the laminated glass body which concerns on Embodiment 1 first prepares plate glass of predetermined dimensions, such as transparent plate glass, at a preparatory process. And this plate glass is loaded and arrange | positioned etc. for a plate glass mounting apparatus. Next, a bead-shaped foamed glass raw material is prepared in the preparation step. For example, by virtue of the method described in the production of the bead-like soda-lime-based glass raw material, the vitreous material having a composition substantially equivalent to that of the plate glass and the foaming agent are integrated into a substantially spherical shape having a particle diameter of 200 to 800 μm. To prepare a bead-shaped foamed glass raw material. And this bead-shaped glass raw material B is thrown into the hopper 15 and stored. Next, liquid alumina (Al ₂ O ₃ ) is discharged from the discharger 14 onto the upper surface of the endless belt 13 while being applied to the upper surface of the endless belt 13 while the endless belt 13 is running at a constant speed by the conveyor driving rollers 12a and 12b. The beaded foam glass raw material B is dropped and supplied from the hopper 16 onto the upper surface of the endless belt 13. Then, the bead-shaped foam glass raw material B on the endless belt 13 is deposited on the downstream side of the gate 17. Here, in the deposition process, when the gate 17 is driven and adjusted to the first position and the endless belt 13 is further run, the beaded foam glass raw material B on the endless belt 13 keeps the lower end of the gate 17 at a certain height. It passes by a certain thickness (constant thickness), and is continuously deposited in layers on the endless belt 13 of the belt conveyor to form a layered deposit.

  Next, in the placing step, the plate glass 2A is continuously placed at predetermined intervals on the upper surface of the layered deposit 1A transferred by the endless belt 13 at a constant speed by the placing device. Next, when the laminar deposit 1A and the plate glass 2A on the endless belt 13 enter the heating furnace at the constant speed, the beaded foam glass raw material and the plate glass of the laminar deposit are simultaneously heated in the heating step, thereby laminating the layered deposit. A foamed glass layer 1 is formed by foaming and firing a bead-shaped foamed glass raw material of the product 1A, and the lower surface of the plate glass layer 2 made of the plate glass 2A and the upper surface of the foamed glass layer 1 are welded together to be integrated. Specifically, the heating step includes first, second, and third heating steps, and the bead-shaped foamed glass raw material and the sheet glass 2A of the layered deposit 1A are transferred to the belt conveyor drinking endless belt 13 by the first conveyor 13. It transfers to a heating process, a 2nd heating process, and a 3rd heating process in order. That is, in the first heating step, heating is performed in a first temperature range in which the surface portion including the lower surface portion of the plate glass 2A is melted. Next, the second heating step is performed at a temperature higher than the first temperature range, and the vitreous material of the beaded foam glass raw material of the layered deposit 1A is melted, so that the beaded foamed glass raw material of the layered deposit 1A is melted. Heating is performed in a second temperature range where they are welded together. Finally, in the third heating step, heating is performed in a third temperature range in which the foaming agent of the bead-shaped foamed glass raw material of the layered deposit 1A is foamed in a temperature range higher than the second temperature range.

  Here, plate glass is generally formed from soda-lime glass, and its softening temperature (softening point) is about 720 to 730 ° C. Further, the glassy softening temperature of the bead-shaped foamed glass raw material in which the glassy material made of soda-lime glass and the foaming agent made of calcium carbonate are integrated is the softening temperature of the plate glass by containing the foaming agent in the glassy material. The higher temperature is about 750-760 ° C. Further, it is considered that calcium carbonate as a foaming agent starts to foam at about 750 to 760 ° C. and completes foaming at about 900 ° C. Therefore, for example, the first temperature range of the first heating step is set to a temperature range of 720 to 730 ° C. which is a general softening temperature of plate glass, and the second temperature range of the second heating step is as described above. It is set as the temperature range of 750-760 degreeC which is the softening temperature of a bead-form foam glass raw material. On the other hand, the third temperature range of the third heating step includes a temperature range of 750 to 760 ° C. which is the foaming start temperature of the beaded foam glass raw material as described above, and a temperature in the vicinity of about 900 ° C. which is the foaming completion temperature. The temperature is in the middle of the range, preferably in the temperature range of 810 to 820 ° C. Here, if the third temperature range is a temperature range lower than the completion of foaming, preferably the temperature range near the middle of the foaming start temperature and the foaming completion temperature as described above, the inside of the foam glass layer 1 of the finished product The size and porosity of the closed pores 1a can be set to optimum values for exhibiting the heat insulating property, strength, shape stability, and the like of the foam glass layer 1. That is, when the third temperature range is close to the foaming completion temperature, the porosity inside the foamed glass layer 1 becomes too high, and the ratio of the glass structure constituting the foamed glass layer 1 is reduced. There is a possibility that the reduction and the shape stability of the product are reduced. In addition, the size of the closed pores 1a of the foam glass layer 1 becomes too large and communicates with the adjacent pores 1a, increasing the probability of forming huge pores. As a result, there is a possibility of inhibiting uniform heat insulation. On the other hand, when the third temperature range is close to the foaming start temperature, the porosity is too low, the heat insulation inside the foam glass layer 1 is lowered, and the performance as a heat insulating tile may not be sufficiently exhibited. . In addition, since the foaming agent is not sufficiently foamed when the foamed glass raw material is fired, the pore size varies, and as a result, the uniform heat insulating property of the foamed glass layer 1 may be hindered.

  Thereby, in the first heating step, the lower surface of the plate glass 2A is melted, and the plate glass 2A has a high viscosity, so that the melted portion physically enters the gap between the bead-shaped foamed glass raw materials of the layered laminate 1A. There is no penetration. In the second heating step, the bead-shaped foam glass raw materials of the layered deposit 1A are welded and integrated with each other, and the lower surface of the plate glass 2A serving as the plate glass layer is welded to the upper surface of the integrated layered deposit 1A. To do. At this time, although the foaming agent of the bead-shaped foamed glass raw material may start to foam, the second temperature range is not high enough to promote sufficient foaming, so that foaming is insufficient. In the third heating step, foaming of the bead-shaped foam glass raw material of the layered deposit 1A proceeds sufficiently and firing is completed to form the foam glass layer 1B. Thereby, the lower surface of the plate glass layer 2B and the upper surface of the foam glass layer 1B are welded and integrated with each other. Thereafter, the layered deposit 1A and the plate glass 2A baked in the heating step are gradually cooled in the slow cooling chamber 21 in the next stage in the slow cooling step to become the foam glass layer 1B and the plate glass layer 2B. At this time, a laminated glass body having a two-layer structure of the plate glass layer and the foam glass layer is formed substantially without forming a layered intermediate layer having a thickness at the melted portion on the lower surface of the plate glass layer and the upper surface of the foam glass layer. can do. And, in the cutting step, the foam glass layer 1B continuous through the break groove G is cut at each break groove G, and the sheet glass layer B is bonded to each of the cut glass layers, and further divided into pieces. In the cutting step, a laminated glass body having a predetermined size can be manufactured by cutting the strip-shaped foamed glass layer 1B and the plate glass layer 2B on the foamed glass layer 1B with a glass cutter with a predetermined width.

  In order to perform the second heating process in the second heating furnace 20b, the set temperature of the second heating furnace 20b is set to the first temperature range (750 to 760 ° C.), and the third heating process is performed in the first heating process. The set temperature of the third heating furnace 20c can be set to the third temperature range (810 to 820 ° C.) as in the third heating furnace 20c. On the other hand, the set temperature of the first heating furnace 20a can be a first temperature range (720 to 730 ° C.), but a temperature range lower than the first temperature range, for example, a temperature around 700 ° C. It is preferable to be in the range. In this way, before entering the first heating furnace 20a, the beaded foam glass raw material and the sheet glass 2A of the layered deposit 1A at room temperature are heated at a temperature equal to or lower than the softening temperature in the first heating furnace 20a. By performing the first heating step as the first temperature range in the second heating furnace 20b, the welded glass layer 1B and the sheet glass layer 2A are smoothly welded as described above, and the welded portion has a thickness. An effect such as prevention of becoming an intermediate layer can be achieved. In addition, it is preferable that the total time of the said 1st-3rd heating process shall be the range for 25-30 minutes, for example, the traveling speed of the endless belt 13, the 1st-3rd so that it may become this time range. The total length of the heating furnaces 20a, 20b, and 20c is set. The heating time is set by increasing / decreasing according to the thickness of the foam glass layer 1 and the sheet glass layer 2 of the laminated glass body to be manufactured.

  According to the said manufacturing method, by preparing a transparent plate glass beforehand as plate glass 2A at a preparatory process, the transparency of the plate glass layer 2 can be maintained even after manufacture, it is rich in aesthetics, and reduces the number of manufacturing steps. This makes it possible to improve work efficiency and reduce costs. In addition, the preparation process allows the glassy material and the foaming agent to be uniformly distributed during the preparation of the raw materials. Further, particularly by the deposition process, the distribution of the pores 1a generated at the time of forming the foam glass layer is made uniform, high heat insulating properties and strength are provided, and there is a specific effect of improving productivity. Further, particularly in the placing step, the plate glass 2A is arranged in accordance with the cutting interval of the continuous fired body (consisting of the foam glass layer 1 and the plate glass layer 2) corresponding to the width or length of the final product (laminated glass body). By doing this, the fired body can be efficiently cut (cut) between the adjacent plate glasses 2A, and the work efficiency of cutting the laminated glass body can be improved. Further, particularly in the heating step, the bead-shaped foam glass raw material of the layered deposit 1A and the plate glass 2A can be heated at the same time, whereby the adhesion between the plate glass layer 2 and the foam glass layer 1 can be improved.

Embodiment 2
FIG. 3 is a cross-sectional view showing a laminated glass body according to Embodiment 2 of the present invention.
As shown in FIG. 3, the laminated glass body according to the second embodiment is the same as that of the first embodiment, in which the plate glass is made of the transparent plate glass 2A, and a pigment is applied to the lower surface of the transparent plate glass 2A to form a colored portion. Thereafter, the plate glass 2A is placed on the upper surface of the layered deposit 1A, and the beaded foam glass raw material B is foamed and fired by simultaneously heating the beaded foam glass raw material B and the plate glass 2A. The foamed glass layer 1 is formed and the upper surface of the foamed glass layer 1 and the lower surface of the plate glass layer 2 are welded and integrated with each other, and between the upper surface of the foamed glass layer 1 and the lower surface of the plate glass layer 2 A colored layer 3 composed of colored portions is arranged.

  That is, the laminated glass body according to Embodiment 2 includes a plate glass layer 2, a foamed glass layer 1, and a colored layer 3, as shown in FIG. The plate glass layer 2 and the foam glass layer 1 are the same materials as in the first embodiment. In addition, in FIG. 3, although the colored layer 3 is formed in the whole surface of the interface of the foam glass layer 1 and the plate glass layer 2, it can also be formed in the part. Alternatively, the colored layer 3 can be a single color, but can also be formed to form a predetermined pattern with a plurality of colors (including black and white). The colored layer 3 is a layer coated with a pigment, and it is preferable to employ a composite oxide ceramic pigment among inorganic pigments. The reason is that the composite oxide ceramic pigment is stable up to a relatively high temperature and is inexpensive. Although the coloring method of the colored layer 3 can be performed by spray coating (spray coating), the method is not particularly limited, and can be performed by, for example, silk screen printing, letterpress printing, transfer printing, or handwriting. Can also be performed. As shown in FIG. 3, by providing the colored layer 3 made of a colored pattern or the like between the plate glass layer 2 and the foamed glass layer 1, the design of the laminated glass body is improved. In particular, since the plate glass layer 2 has a profound feeling and a high-class feeling, it has an effect of being rich in beauty. Conventionally, a product patterned on a glass surface has a problem that the patterned layer on the surface of the product is easily scratched, and is vulnerable to chemical resistance, abrasion resistance, contamination resistance, and the like. However, Embodiment 2 solves such a problem, exhibits the effect of retaining the original characteristics of the pigment, and has the effect of expanding the use as a building material or the like.

Manufacturing method Next, the manufacturing method of the laminated glass body which concerns on Embodiment 2 is demonstrated.
The laminated glass body according to the second embodiment can be manufactured in the same manner as in the first embodiment using the manufacturing apparatus shown in FIG. That is, in the laminated glass body according to the second embodiment, first, after the colored layer 3 is formed on the lower surface (back surface) of the transparent plate glass 2A in the preparation step or the coloring step, the deposition step described in the first embodiment and the mounting step are performed. It can be baked through a placing process, a heating process, and a slow cooling process, and can be manufactured through a cutting process and a cutting process. In addition, although it is normal to perform a coloring process at a preparation process, it can also be performed before a mounting process.

  According to the method for producing a laminated glass body according to the second embodiment, in addition to the effects of the first embodiment, the transparency of the plate glass layer can be maintained even after production by preparing the transparent plate glass in advance in the preparation step. It is rich in aesthetics and can improve work efficiency and reduce costs by reducing the number of manufacturing processes. Further, in particular, in the coloring step, a pigment is applied to the lower surface of the plate glass 2A for coloring, and in the placing step, the plate glass 2A is placed on the upper surface of the layered deposit 1A so as to cover the colored portion. Thus, the colored portion is disposed between the layered deposit 1A and the plate glass 2A, and is effectively protected from the outside. As a result, it is possible to improve the properties such as chemical resistance, abrasion resistance, and stain resistance of the pigment in the colored layer 3 composed of colored portions.

Embodiment 3
The laminated glass body according to Embodiment 3 has a colored layer between the foam glass layer and the plate glass layer. That is, as shown in FIG. 3, the laminated glass body according to the third embodiment forms the colored layer 3 between the foam glass layer 1 and the plate glass layer 2 as in the second embodiment. The colored layer 3 is not applied to the lower surface of the plate glass 2A as in the second embodiment, but is applied to the upper surface of the layered deposit 1A in the manufacturing process. As described in the second embodiment, the colored layer 3 may be provided on a part of the boundary surface between the foam glass layer 1 and the plate glass layer 2, and may be a single color or a plurality of colors (pattern portions). You can also. Specifically, in the laminated glass body according to the third embodiment, the plate glass is constituted by the transparent plate glass 2A, and a pigment is applied to the upper surface of the layered deposit 1A of the bead-like foamed glass raw material B to form a colored portion (single color). In addition, the plate glass 2A is placed on the upper surface of the layered deposit 1A on which the colored portion is formed, so as to shield the colored portion, and the bead-like foamed glass raw material B and the plate glass are formed. By simultaneously heating 2A, the bead-shaped foamed glass raw material B is foamed and fired to form the foamed glass layer 1, and the lower surface of the plate glass layer 2 and the upper surface of the foamed glass layer 1 are welded together. The colored layer 3 which consists of a colored part is arrange | positioned between the upper surface of the said foam glass layer 1, and the lower surface of the said plate glass layer 2 by integrating. The laminated glass body according to Embodiment 3 has the same functions and effects as those of Embodiment 2.

Manufacturing method Next, the manufacturing method of the laminated glass body which concerns on Embodiment 3 is demonstrated.
The laminated glass body according to the third embodiment can be manufactured in substantially the same manner as in the first embodiment using the manufacturing apparatus shown in FIG. That is, first, the transparent plate glass 2A is prepared in the preparation step, the bead-shaped foam glass raw material B is prepared in the preparation step, and the bead-shaped foam glass raw material B is deposited on the endless belt 13 in the deposition step. Then, in the coloring step, a pigment is applied to the upper surface of the layered deposit 1A to form a colored portion. Specifically, using the spray device 18 shown in FIG. 2, a monochromatic colored portion or a pattern portion of a plurality of colors is formed on the upper surface of the layered deposit 1 </ b> A by spray coating. In addition, as a pigment, what was described in Embodiment 2 can be used. Then, the laminated glass body which concerns on Embodiment 3 can be manufactured through the mounting process demonstrated in Embodiment 1, a heating process, a slow cooling process, a cutting process, and a cutting process.

  According to the manufacturing method of the laminated glass body which concerns on Embodiment 3, the effect similar to Embodiment 2 can be anticipated. In other words, by preparing transparent sheet glass in advance in the preparation process, it is possible to maintain the transparency of the sheet glass layer even after production, it is rich in aesthetics, and it improves work efficiency and reduces costs by reducing the number of production processes. And make it possible. Further, in particular in the coloring step, a pigment is applied to the upper surface of the layered deposit 1A to color it, and in the mounting step, the plate glass 2A is placed on the upper surface of the layered deposit 1A so as to cover the colored portion. In the heating step, the colored portion is disposed between the layered deposit 1A and the plate glass 2A, and is effectively protected from the outside. As a result, it is possible to improve the properties such as chemical resistance, abrasion resistance, and stain resistance of the pigment in the colored layer 3 composed of colored portions.

Embodiment 4
FIG. 4 is a sectional view showing a laminated glass body according to Embodiment 4 of the present invention.
As shown in FIG. 4, the laminated glass body according to the fourth embodiment is provided with uneven patterns 1b and 2b on the boundary surface between the foam glass layer 1 and the sheet glass layer 2 in the configuration of the third embodiment. A colored layer 3 composed of colored portions is formed on 1b and 2b. As described in the second embodiment, the colored layer 3 may be provided on a part of the concavo-convex patterns 1b and 2b on the boundary surface between the foam glass layer 1 and the plate glass layer 2, and may be a single color or a plurality of colors ( (Pattern part). Specifically, in the laminated glass body according to the fourth embodiment, the plate glass is constituted by the transparent plate glass 2A, and before the colored portion is formed on the upper surface of the layered deposit 1A of the bead-like foamed glass raw material B or the coloration. At any stage after forming the portion, the upper surface of the layered deposit 1A of the beaded foam glass raw material B is embossed to form the uneven portions 1b and 2b on the colored portion, and then the upper surface of the layered deposit 1A. The plate glass 2A is placed so as to cover the concavo-convex patterns 1b and 2b, and the beaded foam glass raw material B is foamed and fired by simultaneously heating the beaded foam glass raw material B and the plate glass 2A. While forming the glass layer 1, the lower surface of the said plate glass layer 2 and the upper surface of the said foamed glass layer 1 are mutually welded and integrated. In addition, the uneven | corrugated pattern 1b, 2b may be formed in the substantially whole surface of the interface of the foam glass layer 1 and the plate glass layer 2, and may be formed in a part. The laminated glass body according to the third embodiment has the same functions and effects as those of the second embodiment, and the pattern variation due to the combination of the concavo-convex pattern and the colored portion is dramatically increased. Can be improved.

Manufacturing Method Next, a manufacturing method of the laminated glass body according to Embodiment 4 will be described.
The laminated glass body according to the fourth embodiment can be manufactured in substantially the same manner as in the first embodiment using the manufacturing apparatus shown in FIG. That is, first, the transparent plate glass 2A is prepared in the preparation step, the bead-shaped foam glass raw material B is prepared in the preparation step, and the bead-shaped foam glass raw material B is deposited on the endless belt 13 in the deposition step. After that, as described in the third embodiment, in the coloring step, the spray device 18 is used to apply a pigment to the upper surface of the layered deposit 1A to form a colored portion. Next, in the embossing step, the embossing roller 19 is brought into contact with the upper surface of the layered deposit 1A on which the colored portion is formed and rolled to form a predetermined uneven pattern 1B on the upper surface of the layered deposit 1A. At this time, due to a slight pressing force when the pressing roller 19 is pressed, a part of the pigment in the colored portion enters the gap between the particles of the beaded foam glass raw material B of the layered deposit 1A. In this case, the concavo-convex pattern may be formed on the entire colored portion or a part thereof. Next, in the placing step, the plate glass 2A is continuously placed at a predetermined interval on the upper surface of the layered deposit 1A of the beaded foam glass raw material B so as to cover the colored portion. Thereafter, the laminated glass body according to the fourth embodiment can be manufactured through the heating process, the slow cooling process, the cutting process, and the cutting process described in the first embodiment. At this time, in the heating process, the lower surface of the plate glass 2A is melted and deformed to fill the uneven pattern of the layered deposit 1A. That is, an uneven pattern corresponding to the uneven pattern of the layered deposit 1A is formed on the lower surface of the plate glass 2A. And finally, the uneven | corrugated pattern 1b, 2b of both is formed in the interface of the foam glass layer 1 and the plate glass layer 2. FIG. Note that, as described above, since the colored portion is formed in a state of slightly penetrating into the inside from the upper surface of the layered deposit 1A in the embossing step, the laminated glass body according to the fourth embodiment has a deeper depth. A colored layer (pattern layer) 3 can be obtained.

  Or the manufacturing method of the laminated glass body which concerns on Embodiment 4 can also perform an embossing process before a coloring process. That is, first, in the embossing step, a predetermined uneven pattern is formed on the upper surface of the layered deposit 1A by the embossing roller 19, and then in the coloring step, a colored portion is formed on the upper surface of the layered deposit 1A by the spray device 18. To do. In this case, the concavo-convex pattern may be formed on substantially the entire upper surface of the layered deposition portion 1A or may be formed on a part thereof. Moreover, a coloring part may be formed in the whole uneven | corrugated pattern, and may be formed in a part. In this way, unlike the above, the pigment in the colored portion does not penetrate from the upper surface of the layered deposition portion 1A into the interior, and a colored layer 3 having a slightly different appearance from the above can be obtained.

  By the way, the manufacturing method of the laminated glass body which concerns on Embodiment 4 can also omit the said coloring process, can perform only an embossing process, and can also form a laminated glass body. That is, in this case, the plate glass is made of a transparent plate glass, and after the upper surface of the layered deposit of the beaded foam glass raw material is embossed to provide an uneven pattern, the unevenness is formed on the upper surface of the layered deposit on which the colored portion is formed The plate glass is placed so as to cover a pattern, and the beaded foam glass raw material and the plate glass are heated at the same time, thereby foaming and firing the beaded foam glass raw material to form a foam glass layer, and the plate glass The lower surface of the layer and the upper surface of the foam glass layer are welded together to be integrated. In this case as well, the effects and effects similar to those of the fourth embodiment can be obtained, and the effect that a bright concavo-convex pattern different from the colored concavo-convex pattern of the fourth embodiment can be obtained.

Embodiment 5
FIG. 5 is a sectional view showing a laminated glass body according to Embodiment 5 of the present invention.
As shown in FIG. 5, the laminated glass body according to the fifth embodiment is not the plate glass layer 2 on the first foamed glass layer 1 made of the same material as the foamed glass layer 1 of the first embodiment, The second foamed glass layer 51 is laminated. Further, between the first foamed glass layer 1 and the second foamed glass layer 51, a net-like or mesh-like thin plate material such as a metal is interposed as a reinforcing material 55, and is integrally joined and fixed. ing. Specifically, the laminated glass body according to the fifth embodiment is formed in the same manner as in the first embodiment, in the form of a first bead having a substantially spherical shape in which the first vitreous material and the first foaming agent are integrated. A foamed glass raw material (same composition as the beaded foamed glass raw material B) is deposited in layers to form a layered deposit 1A. Further, a plate-like body that is a raw material of the second foamed glass layer 51 is placed on the layered deposit 1A in the same manner as the plate glass 2A of the first embodiment. Here, the plate-like body has a substantially spherical shape in which a glassy material having a composition substantially equivalent to the first glassy material and a second foaming agent having a composition different from the first foaming agent are integrated. This bead-shaped foamed glass raw material is formed into a substantially flat plate shape by wet molding. Then, the plate-like body is placed at a predetermined position on the upper surface of the layered deposit of the first bead-like foamed glass material, and the first bead-like foamed glass material of the layered deposit and the plate-like body The first bead-like foamed glass raw material of the layered deposit is foamed and fired to form the first foamed glass layer 1, and the second bead-like foam of the plate-like body is heated. The glass raw material is foamed and fired to form the second foamed glass layer 55, and the lower surface of the second foamed glass layer 51 and the upper surface of the first foamed glass layer 1 are welded together to be integrated. .

  Note that a large number of closed pores 51 a are uniformly formed inside the second foamed glass layer 51. The surface of the second foamed glass layer 51 forms a predetermined uneven pattern 51a. Here, the second foamed glass layer 51 has a lower porosity than that of the first foamed glass layer 1 to increase the ratio of the glass structure (glassy), so that the strength is increased. It is preferable to select the composition of the second bead-shaped foamed glass raw material. As described above, the fifth embodiment has a combination of different physical properties (heat insulation properties, strength, etc.) by appropriately combining the composition of the bead-shaped foam glass raw materials of the first foam glass layer 1 and the second foam glass layer 51. A laminated glass body having a layer structure can be obtained. That is, the laminated glass body according to the embodiment 5 has both a heat insulating property and strength by stacking foam glass layers having different compositions, and further has a specific effect of improving strength by sandwiching a mesh-like net plate or the like. Have. Moreover, since the unevenness | corrugation of a foam glass layer is exposed on the surface of a laminated glass body, the texture peculiar to a foam tile can be given.

  By the way, the laminated glass body according to the present invention uses a plate glass of plate glass layer 1 in which a colored portion or a pattern portion is previously printed on the upper surface (front surface) or the lower surface (back surface) by screen printing or the like, and this plate glass is deposited in a layered manner. It may be placed on an object, fired at the same time, welded and integrated. Moreover, you may use what made the glass surface by sandblasting etc. on the upper surface or lower surface of plate glass.

  The laminated glass body according to the present invention has the same firing time and pressure as in Example 1 in the first to third heating furnaces 21a, 21b, and 21c in the second to fourth embodiments. The atmospheres of the first to third heating furnaces 21a, 21b, and 21c can be reduced atmospheres to prevent the color pigments from being modified. As pigments, cobalt, aluminum and zinc composite oxide (blue), zircon and praseodymium composite oxide (yellow), titanium, antimony, tungsten and chromium composite oxide (brown) may be used. it can.

Next, the composition example of the plate glass material according to Example 1 which is carried out by limiting the composition of Embodiment 1 to a specific composition is shown below.

  Example 1 having the above composition will be described below. In the present embodiment, a transparent plate-shaped soda-lime glass having a thickness of 1 to 10 mm having the composition of the above composition example is used as a material of the plate glass constituting the plate glass layer 2, and the average particle diameter is used as the material of the foam glass layer 1. A 600 μm bead-shaped soda-lime glass was used. As the beaded foam glass raw material, calcium carbonate is mixed with soda lime glass having the same composition as the plate glass having the above composition, and the mixture is integrated by using a spray dryer apparatus, and is substantially spherical with a particle size of 200 to 800 μm. By doing so, beaded soda-lime glass was produced. Moreover, the laminated glass body of Example 1 was manufactured as described in each of the above embodiments using a continuous manufacturing apparatus 11 as shown in FIG. As temperature conditions in this case, the set temperature of the first heating furnace 21a is about 700 ° C., the set temperature of the second heating furnace 21b is 750 ° C., and the set temperature of the third heating furnace 21c is the temperature. The temperature was 810 ° C. And the layered deposit and plate glass of bead-like soda-lime glass were baked by the said heating process, and what was shape | molded in the continuous strip | belt shape was annealed suitably after slow cooling, and the laminated glass body of thickness 10-20mm was completed. . The firing time in the first, second, and third heating furnaces 21a, 21b, and 21c was about 28 minutes, the atmosphere was air, and the pressure was atmospheric pressure.

Next, physical property examples regarding the physical properties of the laminated glass body according to Example 1 are shown below.

  The laminated glass body according to the present invention has high heat insulating properties and strength by suppressing the nonuniformity of the pores 1a generated at the time of forming the foamed layer, and the surface glass plate layer serves as a protective film, such as scratches. Not only is it difficult to stick, but it also improves properties such as chemical resistance, abrasion resistance, and contamination resistance, and improves design by patterning, so it can be used for building wall coverings, floor coverings, and planters. It is widely used for color blocks and the like, and is extremely useful for recycling and recycling commercial waste glass.

1 is a cross-sectional view showing a laminated glass body according to Embodiment 1 of the present invention. FIG. 2 is an explanatory diagram showing an outline of the laminated glass body manufacturing apparatus and manufacturing method according to Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view showing a laminated glass body according to Embodiment 2 of the present invention. FIG. 4 is a sectional view showing a laminated glass body according to Embodiment 3 of the present invention. FIG. 5 is a sectional view showing a laminated glass body according to Embodiment 4 of the present invention.

Explanation of symbols

1 Foamed glass layer (first foamed glass layer)
1A layered deposit 2 plate glass layer 2A plate glass 3 colored layer 51 second foamed glass layer B beaded foam glass raw material

Claims (10)

  A beaded foam glass material containing a foaming agent is deposited in layers to form a layered deposit, and a plate glass is placed on the upper surface of the layered deposit of the beaded foamed glass material, and the beaded foamed glass of the layered deposit is formed. By simultaneously heating the raw material and the plate glass, the beaded foam glass raw material of the layered deposit is foamed and fired to form a foam glass layer, and the lower surface of the plate glass layer made of the plate glass and the upper surface of the foam glass layer A laminated glass body characterized by welding and integrating each other.   A bead-shaped foamed glass raw material having an approximately spherical particle diameter of 200 to 800 μm, in which glassy material and a foaming agent are integrated, is layered to form a layered deposit, and a plate glass is formed on the upper surface of the layered deposit of the beaded foamed glass raw material. The bead-shaped foamed glass raw material and the plate glass are simultaneously heated to foam and fire the bead-shaped foamed glass raw material to form a foamed glass layer, and the lower surface of the plate glass layer made of the plate glass A laminated glass body, wherein the foamed glass layer and the upper surface of the foamed glass layer are integrated by welding together. The plate glass is composed of transparent plate glass,
After the pigment is applied to the lower surface of the transparent plate glass to form a colored portion, the plate glass is placed on the upper surface of the layered deposit, and the beaded foam glass raw material and the plate glass are heated at the same time, whereby the beads The foamed glass raw material is foamed and fired to form a foamed glass layer, and the upper surface of the foamed glass layer and the lower surface of the plate glass layer are welded together to form an upper surface of the foamed glass layer and the plate glass layer. The laminated glass body according to claim 1 or 2, wherein a colored portion is disposed between the lower surface and the lower surface. The plate glass is composed of transparent plate glass,
After applying a pigment on the upper surface of the layered deposit of the beaded foam glass raw material to form a colored portion, the plate glass is placed on the upper surface of the layered deposit on which the colored portion is formed so as to shield the colored portion. The bead-shaped foam glass raw material and the plate glass are simultaneously heated to foam and fire the bead-shaped foam glass raw material to form a foam glass layer, and the lower surface of the plate glass layer and the upper surface of the foam glass layer The laminated glass body according to claim 1 or 2, wherein a colored portion is disposed between an upper surface of the foam glass layer and a lower surface of the plate glass layer. The plate glass is composed of transparent plate glass,
Either before forming the colored portion on the upper surface of the layered deposit of the beaded foam glass raw material or after forming the colored portion, the upper surface of the layered deposit of the beaded foam glass raw material is embossed. After providing an uneven pattern on the colored portion, the plate glass is placed on the upper surface of the layered deposit, and the beaded foam glass raw material is foamed by simultaneously heating the beaded foam glass raw material and the plate glass. 5. The laminated glass body according to claim 4, wherein a foamed glass layer is formed by firing, and a lower surface of the plate glass layer and an upper surface of the foamed glass layer are welded and integrated with each other. The plate glass is composed of transparent plate glass,
The upper surface of the layered deposit of the beaded foam glass raw material is embossed to provide an uneven pattern, and then the plate glass is placed on the upper surface of the layered deposit on which the colored portion is formed so as to cover the uneven pattern, and the beads The bead-shaped foam glass raw material is foamed and fired to form a foam glass layer by simultaneously heating the glass foam glass raw material and the plate glass, and the lower surface of the plate glass layer and the upper surface of the foam glass layer are welded together. The laminated glass body according to claim 1, wherein the laminated glass body is integrated.   A first bead-shaped foamed glass raw material having a substantially spherical shape in which the first glassy material and the first foaming agent are integrated is layered to form a layered deposit, which is substantially the same composition as the first glassy material. A plate-like shape formed by wet-molding a second bead-shaped foamed glass raw material having a substantially spherical shape obtained by integrating the glassy material and the second foaming agent having a composition different from that of the first foaming agent. By placing the body on the upper surface of the layered deposit of the first beaded foam glass raw material, and simultaneously heating the first beaded foam glass raw material of the layered deposit and the plate-like body, The first beaded foam glass raw material of the layered deposit is foamed and fired to form a first foamed glass layer, and the second beaded foam glass raw material of the plate-like body is foamed and fired to form a first foamed glass raw material. 2 foam glass layers and under the second foam glass layer Laminated glass body, characterized in that the upper surface of the first foam glass layer and integrated by welding to each other and. A deposition step in which a bead-shaped foamed glass raw material having an approximately spherical particle diameter of 200 to 800 μm, in which glassy material and a foaming agent are integrated, is continuously deposited in a layered manner on a belt conveyor to form a layered deposit;
A placing step of continuously placing plate glass at a predetermined interval on the upper surface of the layered deposit of the bead-like foamed glass raw material;
The beaded foam glass raw material of the layered deposit and the plate glass are simultaneously heated to foam and fire the beaded foam glass raw material of the layered deposit to form a foamed glass layer, and a plate glass layer made of the plate glass And a heating step in which the upper surface of the foamed glass layer and the upper surface of the foamed glass layer are welded and integrated with each other. A preparation step of preparing transparent plate glass;
A preparation step of preparing a bead-shaped foamed glass raw material having a spherical shape with a particle size of 200 to 800 μm by integrating a glassy material having a composition substantially equivalent to the plate glass and a foaming agent;
A deposition step in which the bead-shaped foamed glass raw material is continuously deposited in layers on a belt conveyor to form a layered deposit;
A coloring step of forming a colored portion by applying a pigment to at least one of the lower surface of the plate glass and the upper surface of the layered deposit;
A placing step of continuously placing the plate glass at a predetermined interval on the upper surface of the layered deposit of the bead-like foamed glass raw material so as to cover the colored portion;
The beaded foam glass raw material of the layered deposit and the plate glass are simultaneously heated to foam and fire the beaded foam glass raw material of the layered deposit to form a foamed glass layer, and a plate glass layer made of the plate glass And a heating step in which the upper surface of the foamed glass layer and the upper surface of the foamed glass layer are welded and integrated with each other. The heating step includes a first heating step in which heating is performed in a first temperature range in which a surface portion including a lower surface portion of the plate glass is melted, and a temperature range higher than the first temperature range. A second heating step in which heating is performed in a second temperature range in which the glassy material of the bead-shaped foam glass material melts and the bead-shaped foam glass material of the layered deposit is welded to each other; And a third heating step in which heating is performed in a third temperature range in which the foaming agent of the bead-shaped foam glass raw material of the layered deposit is foamed.
The bead-like foamed glass raw material and the plate glass of the layered deposit are sequentially transferred to the first heating step, the second heating step, and the third heating step by the belt conveyor. 9. A method for producing a laminated glass body according to 9.

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