JPH0442825A - Production of glass having pattern - Google Patents

Abstract

PURPOSE:To make it possible to form natural pattern by laminating two or more kinds of glass grain bodies having different colors in a mold by layered form and integrating the glass grain bodies by heating. CONSTITUTION:A mold 1 consisting of a flame resistant frame 10 and a transparent upper mold 6 and having an opening 1b on the side part is vertically or slantingly put so as to turn the opening 1b upward. Two or more kinds of glass grain bodies 2 to 4 having different colors are successively dropped from the upper part and deposited in a mold to form a laminate 5 having a layer pattern corresponding to the dropping order. Then, an end mold 7 is arranged to close the opening 1b and the mold is pushed down so as to turn the upper mold 6 upward to remove the upper mold 6 and the glass grain bodies are fused or fused and crystallized by heating to integrate glass grain bodies.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a patterned glass suitable for architectural and decorative purposes, furniture materials, etc., and particularly to a method for producing patterned crystallized glass.

[Conventional technology]

Conventionally, as a manufacturing method of this type, glass granules obtained by crushing crystalline glass that does not contain a nucleating agent are placed in a mold and heat treated to fuse and crystallize.
JP-A-48-78217, JP-A-50-1165
No. 17, etc., and there is also a manufacturing method in which the sheet is formed into a plate shape by a roll-out method and crystallized by heat treatment, a manufacturing method by bonding a crystallized glass plate and a crystalline glass granule, or a method in which a partition plate is formed during accumulation. There is a manufacturing method in which the partition plate is pulled out after placing the crystalline glass particles, and heat treatment is performed to fuse and crystallize the partition plate.

[Problems to be Solved by the Invention] The above-mentioned method using crystalline glass granules that do not contain a nucleating agent is a method that makes the pattern of the granules appear by utilizing the fact that crystals occur only from the grain surfaces. It is difficult to create striped patterns with large variations (large patterns), and when using partition plates, the pattern collapses when the partition plates are pulled out after stacking. In the method of forming the material into a shape and crystallizing it, the material contains a nucleating agent, which results in homogeneous crystallization, making it difficult to create large patterns.

Furthermore, in order to pattern crystallized glass only by bonding, a cutting process of the crystallized glass plate is required in order to make the desired pattern appear, and the manufacturing process is labor-intensive.

The purpose of the present invention has been made to eliminate the drawbacks of the prior art as described above, and by devising a method of accumulating two or more types of glass particles and/or powders of different colors. The object of the present invention is to provide a method for easily producing glass having a natural pattern such as a striped pattern.

[Means to solve the problem]

The present invention is described in (+) and (2) below, and thereby can achieve the above object.

(1) A mold is installed vertically or inclined with the opening provided on the side facing upward, and two or more types of glass granules and/or powder of different colors are inserted into the mold from the opening. After forming a laminate having an N pattern corresponding to the falling order by sequentially falling and depositing the laminate within the laminate, the laminate is heated and fused or fused/crystallized to be integrated. Method of manufacturing attached glass.

(2) The method for manufacturing patterned glass according to claim 1, characterized in that at least a part of the top mold or the bottom mold is made of a transparent material so that the laminated state of the layers can be seen.

The material of the glass granules and/or powder (hereinafter abbreviated as glass granules/powder) used in the present invention may be any glass material such as crystallized glass, crystalline glass, ordinary glass. Included. Here, crystallized glass refers to glass in which crystals have already been precipitated, crystalline glass refers to glass in which crystals can precipitate but have not yet precipitated, and ordinary glass refers to plate glass, Refers to common glass such as colored glass.

In the present invention, a laminate is created using the above-mentioned glass particles/powder, but the constituent material of the laminate is not limited to only glass particles/powder. For example, block-shaped glass (The material is the same as glass grains and powder) etc. may also be used. Here, these can be made into a laminate appropriately arranged in a deposited layer consisting of glass grains and powder.

In addition, the fused body obtained by heat-treating the laminate consisting of these glass grains and powders, and ultimately the final product, may be crystallized glass or ordinary glass, but it is desirable for aesthetic reasons to include at least crystallized glass. and favorable in terms of performance.

In the present invention, these glass grains and powders having different colors are used. Here, the term "different colors" includes not only ordinary colored colors such as red and orange, but also differences in shading or transparency of the same color, or a combination thereof.

The color of the present invention means the color when the product is made, and does not necessarily match the color of the glass grains/powder.

In the present invention, the layered pattern can be created by setting a mold so that the pattern appears at least on the surface where the pattern was originally desired in the laminate and ultimately the final product, and dropping and depositing the glass grains/powder.

Moreover, there is no particular restriction on the shape of the nuclear layer. The core layer may be a regular linear layer, an irregular curvilinear layer, a continuous or discontinuous layer, or a combination of these layers. In this case, the types of glass grains/powder forming each layer may be one type or a mixture of two or more types, as long as there is a difference in color between the layers.

There are no particular limitations on the method of dropping the glass grains/powder to produce the laminate, and examples include manual dropping and mechanical dropping from a hopper or the like in which the moving speed and falling amount are controlled.

The structure of the mold used in the present invention is not particularly limited, as long as it can be installed vertically or inclined with the opening provided on the side facing upward. It may be constructed of separate members that can be assembled, and the arrangement of the openings with respect to the stack can be changed by appropriately changing the arrangement of the members.

Furthermore, by constructing at least a part of the top mold or the bottom mold on the side having the pattern from a transparent material, it is possible to form the laminate while observing the laminated state of the pattern layers, making it easy to create the desired pattern. It is advantageous.

In this case, the material of the transparent material may be fire-resistant or non-fire-resistant. In particular, by using a transparent glass material, preferably transparent plate glass, as the transparent material, it is also possible to create a product having a transparent glass layer on the surface by checking the pattern surface and directly heat-treating.

Furthermore, when the glass grains/powder is dropped to form a laminate, the inclination of the mold into which the receiver is placed may be changed as appropriate without changing the opening of the mold.

In addition, by depositing glass grains and powder to form a transparent glass layer on a patterned surface to form a laminate and heat-treating it, it is possible to obtain a product with a transparent glass layer on the surface. can.

Further, in order to increase the packing density of the laminate, pressing or the like may be performed as appropriate after forming the laminate.

The heat treatment conditions for the laminate in the present invention can be set as appropriate depending on the type of glass grain/powder material used, but
The temperature of the crystalline glass is increased at a rate of 50 to 200°C/hr, held at a constant temperature selected from the crystal nucleus formation temperature range of 700 to 800°C for 0.5 to 5 hours, and further heated at a rate of 50 to 200°C/hr.
Raise the temperature at a rate of 200°C/hr to 950-1100°
Examples include a process of holding at a constant temperature selected from the range C for 0.5 to 4 hours, and then slowly cooling.

Specifically, the crystals generated in the heat treatment of the present invention include β-wollastonite (CaO・5i(h)), forsterite (2MgO・SiO□), β-subodumene (
Li20・ALz (h・4SiO□), ureimite (
2ZnO・Sing), Garnite (ZnO・AIt0
3) etc.

There are many composition systems for crystalline glass that can precipitate such crystals, but among them, the main one that is in practical use is Li20-
Alz (h-3i02, Na 20-81203-5
i02, Mg0-Ah(h-SiOz, NazO-Ca
O-MgO-3iOz, PbO-Zn0-BzO3, Z
nO-B2O, -5i02, etc., among which a suitable one is selected. A nucleating agent for crystallization may be added to these glasses, in which case the nucleating agents include TiO2, ZrOZ, Fe2O3, ν205, Ni
Many materials can be used, such as oxides such as O and Crz(h), fluorides and sulfides such as CaF2, and noble metals such as pt and Au.

In addition, the composition systems of ordinary glasses include NazO-CaO-5iOz, NazO-BzO,...
-3iOz, Ca0-Alz03-SiOz, K2O-
Examples include CaO-5iOz, KzO-PbO-5iO□ systems, and the like.

To make these glasses colored, colorants are added. In addition to metal colloids such as gold, silver, and copper, N
1p (brown, beige), Mn0z (green, reddish brown)
, Cod (dark blue), FezO, (blue, blue-green, brown), Cr203 (orange, yellow, green, dark green), Cub (green, red), etc., Zn (lcrz03 (light yellow)
, Zn(LCr20z Ti(lz(row type/four strip colors)
, ZnO・5nOz・Crz(h (loess/Shijo yellow)
, (MnSOa' 48zO)・CrzOs (cream color), MnO□・A1203 (light yellowish white), and other spinel type pigments can be used. The amount of the colorant added is preferably 0.1 to 5% by weight.

The particle size of the glass particles/powder used in the present invention is as follows:
In the case of granular materials, the range is preferably from 0.5 to 10 mm, and in the case of powdered materials, 0.5 mm or less is used.

Examples of preferred embodiments of the present invention include the following methods. This will be explained below with reference to the drawings.

Glass components are melted and pulverized to prepare several types of crystalline glass granules with different colors. Next, a mold I consisting of a refractory frame la and an upper mold (preferably transparent) 6 and having an opening 1b on the side is placed vertically so that the opening 1b faces upward as shown in FIG. The crystalline glass granules 3 exhibiting a white color, the crystalline glass granules 4 exhibiting a black color, and the crystalline glass granules exhibiting a beige color are sequentially dropped from the top and deposited in the mold as shown in FIG. A plate-shaped laminate 5 having a striped pattern as shown in FIG. 2 is produced. In this case, if necessary,
You may press from the top. Next, the end mold 7 is placed and the opening 1b is closed to eliminate the flow of glass grains and powder inside, and the mold is laid down so that the upper mold 6 is on top, the upper mold 6 is removed, and heat treatment is performed. Then, it fuses and crystallizes. The patterned crystallized glass thus obtained has a white crystallized glass layer, a black crystallized glass layer, and a beige crystallized glass layer corresponding to FIG. 2.

Incidentally, if the upper mold 6 is made of a transparent glass material, the upper mold may be heat-treated to be fused and integrated to form a transparent glass layer on the surface without removing it.

Using the above manufacturing method, when glass grains/powder of several colors are filled, there is no need for frames or partitions depending on the color difference, and filling can be done quickly.If a transparent upper mold is used, the internal Since filling can be performed while checking the laminated state, it is possible to easily create the desired aesthetically pleasing pattern.

[Effect]

According to the present invention, a laminate having a desired pattern can be easily formed by simply dropping and depositing glass grains/powders of different colors into a mold, and by heat-treating this, the laminate can be formed into a laminate. is fused or fused/crystallized to form patterned glass.

〔Example〕

Hereinafter, specific examples of the present invention will be described, but the present invention is not limited thereto.

Examples Crystalline glass granules 2 having a beige color, crystalline glass granules 3 having a white color, and crystalline glass granules 4 having a black color having the compositions shown in Table 1 above were used.

Next, a mold 1 is made by combining a refractory frame 1a and a transparent glass plate upper mold 6 as shown in FIG. 1, and a laminate 5 as shown in FIGS. Granular material 2.
3 and 4 are formed by repeatedly falling and then pressed to increase the packing density of the laminate 5. Next, the end mold 7 is placed, the mold 1 is turned over so that the transparent glass cover plate 6 faces upward, the transparent glass plate is removed, and the mold is placed in an electric furnace. 100'C/h
Raise the temperature at a rate of 100°C/hr, hold at 750'C for 2 hours, further raise the temperature at a rate of 100°C/hr, and hold at 1070'C for 2 hours.
Heat treatment was carried out for a period of time.

The obtained crystallized glass had a striped pattern as shown in FIG. 2.

[Effects of the Invention] As described above, according to the present invention, when filling glass grains/powder with various colors, the method for manufacturing a patterned glass product can be quickly filled, and heat treatment can create striped patterns etc. Crystallized glass with natural patterns can be easily made using simple equipment.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are diagrams for explaining the embodiment,
FIG. 1 is a longitudinal sectional view, and FIG. 2 is a front view seen from direction A in FIG. 1. Explanation of symbols 1: Mold 1a: Refractory frame 1b Two-opening bottom part 2: Beige crystalline glass granules 3: White crystalline glass granules 4: Black crystalline glass granules 5: Laminated body 6: Upper mold 7: End mold Figure 4: Crystalline glass granules exhibiting black color Figure

Claims (2)

[Claims] (1) A mold is installed vertically or inclined with the opening provided on the side facing upward, and two or more types of glass granules and/or powder of different colors are inserted into the mold from the opening. A pattern characterized by forming a laminate having a layer pattern corresponding to the falling order by sequentially falling and depositing the laminate within the layer, and then heating the laminate to fuse or fuse/crystallize to integrate. Method of manufacturing attached glass. (2) The method for manufacturing patterned glass according to claim 1, characterized in that at least a part of the top mold or the bottom mold is made of a transparent material so that the laminated state of the layers can be seen.