JPH04224122A - Crystallized glass material having patterned light-transmissive part and its manufacture - Google Patents

Abstract

PURPOSE:To easily obtain crystallized glass material having light-transmissive parts with spherical patterned part, etc., on a surface and inside part thereof. CONSTITUTION:This crystallized glass material 1 forms patterns by the presence of crystallized spherical parts 4 and circular parts 5 in a light transmissive part 3 integrally fused with base 2 formed by crystallized glass. This glass material is produced by melting the crystallized glass and arranging a transparent body formed by a metallic mold at a forming mold and adding powdery and granular material such as crystallized glass, then executing heat treatment to it.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crystallized glass material having a transparent portion having a spherical or circular pattern and used as an interior/exterior material, flooring material, interior material, etc., and a method for manufacturing the same.

0002

2. Description of the Related Art Articles made of crystallized glass have a beautiful appearance and are therefore used as building materials such as interior and exterior decoration materials and flooring materials. Conventional crystallized glass materials are entirely opaque or translucent, lacking transparency and lacking the glitter characteristic of glass. Therefore, when it is desired to give glitter, it is necessary to combine it with a translucent glass material. Recently, as an improvement, a transparent part made of translucent glass is attached to a base made of crystallized glass from the front side of the base to the back side of the base. A crystallized glass material having a transparent part and having an integrated structure has been proposed (Japanese Patent Laid-Open No. 2-129044).
Publication No.).

[0003] As a method for producing crystallized glass having a light-transmitting portion, two methods are shown in the above-mentioned publication.
The first method involves pressure-molding a mixed powder consisting of glass powders with low softening points and high softening points to obtain a plate-shaped glass powder molded body, and the molded body has through-holes for forming transparent parts. In this method, a transparent glass member with a low softening point is fitted into the hole, and the molded body is subjected to heat treatment for densification and crystallization.

In the second method, a transparent low softening point glass powder is partially placed in a plate-shaped mold, and a mixed powder consisting of a low softening point glass powder and a high softening point glass powder is placed around it. In this method, these glass powders are pressure-molded to obtain a plate-shaped glass powder molded body, and the molded body is subjected to densification and crystallization heat treatment.

[0005]

[Problems to be Solved by the Invention] However, in order to form a transparent portion in the crystallized glass material, a transparent glass with a low melting point is used and heat treated at a temperature higher than the melting point of the low melting point glass. As a result, during the crystallization heat treatment of the part forming the base, the low melting point glass becomes a solution, and after slow cooling, this low melting point glass part becomes a transparent part, but the base Unless the melting point temperature of the glass in the forming part is different from the melting point temperature of the glass in the transparent part to a certain extent, it is difficult to form a transparent part.

[0006] Furthermore, in the first method described above, when holes are made in the glass powder compact, since the powder compact is a powder compact, the bonding force between the powders is weak, and the powder around the hole easily falls off. When the glass member is attached to the hole and fired, the powder tends to fall into pores, and the carbon in the pores (CO2 from the binder or C in the air)
(O2 produced by reduction) reacts with the glass, and the boundary between the light-transmitting part and the base part tends to become black, resulting in poor aesthetic appearance. Further, it is difficult and time-consuming to make a curved hole or a hole with a complicated shape in the powder compact, and to fit a transparent glass member with a low softening point into the hole. For this reason, the designs of shapes that can be manufactured are limited.

In the second method described above, a frame is placed in a mold, transparent low softening point glass powder is filled in the frame,
After filling the mixed powder to form a base outside the frame, the mold must be removed, but the shape tends to collapse when the mold is removed. In addition, in the crystallized glass materials obtained by these methods, if the light-transmitting portion is simply transparent and has a light-transmitting function, it feels monotonous and unsatisfactory.

The present invention has been made to address these problems, and provides a crystallized glass material having a pattern on the transparent portion, and also eliminates the need to make holes in the glass powder compact. No need to use formwork, easy to install,
It is an object of the present invention to provide a method for manufacturing a crystallized glass material having a patterned light-transmitting part with good design.

0010

[Means for Solving the Problems] The present invention was able to achieve the above object by the following means. 1. A transparent part made of crystalline glass is attached to a base made of crystallized glass from the front side to the back side of the base, and is fused and integrated. 1. A crystallized glass material having a patterned light-transmitting part, characterized by having a pattern consisting of a rounded spherical part and a circular part. 2. A crystalline glass raw material is melted and a transparent body formed by a mold is placed in the mold, and crystallized glass or crystalline glass powder and/or granules are placed around it and fused. and a crystallized glass material having a patterned transparent part, characterized in that a pattern consisting of crystallized spherical parts and circular parts is formed on the transparent body by performing crystallization heat treatment and polishing the surface. Production method.

[0011] "Crystallized glass" used in the present invention refers to glass in which crystals have already been precipitated, and "crystalline glass"
refers to glass that can produce crystals through crystallization heat treatment. In the crystallized glass material of the present invention, the light-transmitting part is attached from the front surface side to the back surface side of the base and is fused and integrated, so that light can be transmitted through the crystallized glass material. The shape of this transparent part can be any shape, and its size and number can be freely selected, but the size of the crystallized spherical part and circular part that form the pattern in the transparent part is The diameter is approximately 2-6m
m, so when forming a pattern consisting of a combination of several spherical parts, etc., it is necessary to have a size sufficiently larger than these.

To explain the crystallized glass material of the present invention with reference to the drawings, as shown in FIG. It is integrated. This transparent part 3 extends from the front side to the back side of the crystallized glass material 1, and inside this transparent part there are a number of spherical parts 4 that are crystallized and become crystallized glass, In addition, there are a number of similarly crystallized circular parts 5 on the surface, and these spherical parts 4 and circular parts 5 can be seen from the outside because the light-transmitting part 3 is transparent, and a pattern is formed. It becomes something.

[0013] The light-transmitting part is formed of crystalline glass, and has a crystallized spherical part and a circular part (a part made of crystallized glass) inside. Since it grows from a crystal nucleus, the inner part is usually spherical, but the part on the surface of the light-transmitting part is polished and has a circular shape in appearance.

[0014] As the crystallized glass for forming the base, any of the already known crystallized glasses can be used. For example, the following crystallized glasses are crystallized by adding a nucleating agent if necessary. can be used. In addition, examples of crystalline glass used in the transparent part include β-wollastonite (CaO・SiO2), forsterite (2MgO・SiO2), and β-spodumene (L
i2O・Al2O3・4SiO2), ureimite (2ZnO・SiO2), gahnite (ZnO・
It can precipitate crystals such as Al2O3). There are a large number of basic glass systems for such crystalline glasses, but among them, the main one that is used in practical use is Li2O-Al2O.
3-SiO2, Na2O-Al2O3-Si
O2, MgO-Al2 O3-SiO2, Na2
O-CaO-MgO-SiO2, PbO-ZnO-
B2O3, ZnO-B2O3-SiO2, etc., among which a suitable one is selected.

[0015] These crystallized glasses and crystallizable glasses can be colored. When these glasses are colored other than colorless, it is common to add a coloring agent during the preparation of the glass. As coloring agents, in addition to metal colloids such as gold, silver, and copper, Ni
O (brown, beige), MnO2 (green, reddish brown), C
oO (dark blue), Fe2 O3 (blue, blue-green, yellowish brown)
, Cr2O3 (orange/yellow/green/dark green), CuO (green/red), etc., ZnO・Cr2O3 (light yellow), ZnO・Cr2O3・TiO2 (brown-orange/light brown), ZnO・SnO2 ・Cr2 O3 (loess/light brown yellow), (MnSO4 ・4H2 O)・Cr2O3
(cream color), MnO2.Al2O3 (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.

In producing the crystallized glass material of the present invention, a transparent body, which is a pre-shaped transparent glass body, is prepared by melting the crystalline glass raw material as described above and injecting it into a mold. to make. At this time, transparent bodies with various shapes can be made by selecting the mold. For example, it can be a human shape or other designed shape. Examples of the shape of the transparent body 6 are shown in FIGS. 2 to 5. At this time, since the crystalline glass is only melted and shaped, no crystallization occurs and its transparency is not lost.

The transparent body thus obtained is placed in a mold 8 as shown in FIG. 6, and a powder or granular body (hereinafter referred to as "powder/ A spherical part crystallized into the transparent body is formed by arranging the powder/granular body (referred to as "granular body") 7 and performing fusion and crystallization heat treatment to fuse the powder/granular body, crystallize it, and polish it. and a pattern consisting of circular portions is formed.

[0018] Various sizes can be used for the powder/granular material, and in the case of powder, the size is 0.5 m.
m or less is used, and the granular material is 0.5 to 2.
A size in the range of 0 mm is preferably used, but the size is not limited to this range and may be larger, and the shape of the granular material is not limited to granular.

[0019] When crystalline glass is used for powder or granules, a nucleating agent for crystallization may be added to the crystalline glass in order to promote crystallization. As a nucleating agent, TiO2, ZrO2, Fe2
Oxides such as O3, V2 O5, NiO, Cr2 O3, fluorides such as CaF2, sulfides, Pt and A
Many precious metals such as u are known.

By carrying out the heat treatment and polishing described above, the powder/granular material is fused and integrated with each other, and is also fused and integrated with the transparent body. A spherical part and a circular part are formed, and a pattern is formed by them. The diameter of the spherical portion and the circular portion generally ranges from 2 to 10 mm, but can be up to 15 mm. A preferred range is 2 to 5 mm. This diameter increases as the crystallization time increases, so
It can be controlled by setting the crystallization time. In addition, the number of spherical parts and circular parts to be generated can be adjusted by adjusting the material of the crystalline glass and the conditions for generating crystal nuclei.
It can be adjusted as appropriate.

[0021]

[Function] In the crystallized glass material of the present invention, the light-transmitting part is formed of crystalline glass, and this exists from the surface to the back side, so it has good light-transmitting properties, similar to the conventional technology. However, it has many crystallized spherical and circular parts inside and on its surface, and because these are crystallized glass, they have a unique color tone, and together with their naturally occurring arrangement, they are beautiful. form a pattern. Therefore, this crystallized glass material has rich decorative properties and is suitable for use in architectural exterior materials, interior materials, and the like.

Furthermore, in the manufacturing method of the present invention, the transparent body for forming the light-transmitting portion is formed by molding the molten crystalline glass using a mold, so that the light-transmitting portion can be formed in any shape. When this transparent body is placed in a mold, crystallized glass or crystalline glass powder/granules are placed around it, and heat treatment is performed for fusion and crystallization, the powder/granules have a shape. Because they are small, they easily fuse, and in the case of crystallized glass, they easily form the base of crystallized glass, and in the case of crystallized glass, they fuse together, and because they are in the form of powder or granules. During heat treatment, an extremely large number of crystal nuclei are formed from the grain boundaries of the powder, and since the volume of the powder/granular material is small, the entire base transforms into crystallized glass relatively quickly.

However, since the transparent body is integrated as a whole, volumetric nucleation occurs in the heat treatment, so nuclei are simultaneously generated inside and on the surface of the transparent body, resulting in crystal growth. However, since the volume of a transparent body is much larger than that of a powder or granule, it is not possible to crystallize all of the crystalline glass in a transparent body. and,
Due to heat treatment, crystals grow from the surface to the inside of the transparent body, e.g. 2 to 3 mm, and the inside has a diameter of 2 to 6 m.
m crystallized spheres grow. At this stage, the entire base is already made of crystallized glass.

[0024] Therefore, if the heat treatment for crystal growth is stopped at this stage and the material is slowly cooled, a material having a pattern consisting of crystallized spherical parts and circular parts in the transparent part can be obtained. If the heat treatment described above is continued as it is, the crystallized portion will cover the entire transparent portion and the entire portion will become crystallized glass, so such a situation must be avoided.

[0025] The formation mechanism of the crystallized spherical parts and circular parts in the above-mentioned transparent body is based on speculation and is not necessarily scientifically accurate, but the formation situation by heat treatment is as explained above. It is.

[0026]

[Examples] The present invention will be specifically explained below with reference to Examples. However, the present invention is not limited only to these examples.

[Table 1] 1. Crystallized glass and crystalline glass powder (0.5 mm or less) and granules (0.5 to 2 mm) synthesized with the compositions shown in Table 1.
0mm) was prepared. 2. The white raw materials and beige raw materials having the compositions shown in Table 1 were each melted at 1450°C and poured into molds to produce transparent bodies 6 each having the shape of a rectangular parallelepiped (thickness: approximately 15 mm) as shown in FIG. 2. .

Example 1 Two molds 8 shown in FIG. 6 are prepared, and a transparent body 6 having a white or beige rectangular parallelepiped shape manufactured in advance is placed in each of them. The above-mentioned beige or white crystalline glass powder was filled and placed between 6 and 6. This was fired by the following process. Room temperature → 900°C Increase over 4 hours (fusion/nucleation period) 900°C → 1070°C Over 2 hours (nucleation and growth period) Hold at 1070°C 2 hours (crystal growth period) 1070°C → 800°C 2 hours times 80
0℃→500℃ 500℃→300 for 2 hours
℃ 3 hours 300℃→room temperature Furnace cooling (natural cooling)

0
[028] The surface of the material obtained by the above process is
When polished by about 3 mm, a crystallized glass plate having patterned light-transmitting portions 3 as shown in FIG. 1 was obtained.

Example 2 Two molds 8 shown in FIG. 6 are prepared, and a transparent body 6 having a white or beige rectangular parallelepiped shape manufactured in advance is placed in each of them. The beige or white crystalline glass granules described above were filled and disposed between the substrate and the substrate. This was fired in the same process as Example 1,
And by polishing, the patterned transparent part 3 as shown in Fig. 1 is formed.
A crystallized glass plate having the following properties was obtained.

[0030]

[Effects of the Invention] The crystallized glass material of the present invention is beautiful because it has a pattern consisting of crystallized spherical portions and circular portions in the transparent portion. Since the pattern appears based on various factors, it is possible to obtain a natural and varied pattern.
Moreover, since these spherical parts are made of crystallized glass, they are rich in flavor, and can be colored in various tones.

Furthermore, according to the manufacturing method of the present invention, since molten crystalline glass is used that has been pre-molded using a mold, it is possible to easily create a transparent portion of any shape with rich design. Furthermore, a clear boundary between the light-transmitting part and the base made of crystallized glass is created, and the area does not become black. In the transparent portion, a pattern consisting of crystallized spherical portions and circular portions can be formed, and a beautiful pattern rich in variety can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an example of the crystallized glass material of the present invention.

FIG. 2 is a perspective view of an example of a transparent body used to form a light-transmitting part in manufacturing the crystallized glass material of the present invention.

FIG. 3 is a perspective view of another example of the transparent body.

FIG. 4 is a perspective view of another example of the transparent body.

FIG. 5 is a perspective view of another example of the transparent body.

FIG. 6 is a layout diagram showing an outline of the layout inside a mold in the method for manufacturing a crystallized glass material of the present invention.

[Explanation of symbols]

1 Crystallized glass material 2 Base 3 Transparent part 4 Crystallized spherical part 5 Crystallized circular part 6 Transparent body 7 Crystallized glass or crystalline glass powder/granule 8
mold

Claims (2)

[Claims] Claim 1: A transparent part made of crystalline glass is attached to a base made of crystallized glass from the front side to the back side of the base, and is fused and integrated. A crystallized glass material having a patterned transparent part, characterized in that the transparent part has a pattern consisting of crystallized spherical parts and circular parts. 2. A transparent body formed by melting a crystalline glass raw material and molded using a mold is placed in the mold, and crystallized glass or powdered and/or granular bodies of crystalline glass are placed around it. The transparent body has a patterned transparent part, characterized in that a pattern consisting of crystallized spherical parts and circular parts is formed on the transparent body by subjecting the transparent body to fusion and crystallization heat treatment and polishing the surface. Method for producing crystallized glass material.