JPH0710570A - Preparation of glass marble using waste glass - Google Patents

Abstract

PURPOSE: To obtain glass marble which is beautiful, has excellent heat resistance, water resistance and chemical resistance and with which semipermanently beautiful patterns are maintained by laminating glass particles classified to ≥2 grain size ranges successively from the smaller particles within a mold injected with aluminum oxide on its inside base, then slowly heating the mold up to a temp. near the m. p. of the used glass, then cooling the mold.

CONSTITUTION: Aluminum oxide is injected to the internal base of the rectangular mold at a thickness of about 5 mm and the glass powder of 10 to 120 meshes contg. aluminum oxide, antimony trioxide, sodium nitrate and common salt is laminated thereon at a thickness of about 1 cm. The glass powder of 1 to 5 meshes contg. the four compds. described above is laminated thereon at a thickness of about 0.4 to 0.5 cm and the glass powder having a grain size of 3 to 12 mm is laminated thereon. This mold is heated in a firing furnace and is taken out when the mold is heated up to 1000 to 1100°C. The mold is rapidly cooled down to 500°C and 15 allowed to cool down to ordinary temp. by spending about 10 hours in a slow cooling chamber. Fig. illustrates the deformation process by the thermal change of the laminated glass described above, where the temp. rises successively toward the right side from the left side.

COPYRIGHT: (C)1995,JPO

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention uses waste glass such as Ringer bottles for hospitals, pesticide bottles, and various bottles that are discarded after being used in daily life. It relates to the method of manufacturing glass marble,
In particular, a method for producing a beautiful glass marble having an aesthetic appearance similar to natural stone, in which the irregularity and natural pattern are formed on the upper surface by utilizing the specific gravity together with the change in heating temperature due to the difference in softening point according to the particle diameter of glass particles It is about.

[0002]

2. Description of the Related Art The natural pattern of natural marble is so beautiful that it is used as a building material, but its production is limited and it is expensive. Therefore, recently, artificial marble molded from FRP, synthetic resin or the like, which can be produced at low cost, is produced.

[0003]

However, artificial marble has a problem that it lacks in natural beauty and lacks precious products, and has low durability and short life. The present invention has been made in view of the above conventional problems, using various bottles discarded in daily life or injectable medicine bottles of hospitals, etc., excellent in durability, heat resistance and cold resistance, and has a melting point of glass. It is an object of the present invention to provide a method for producing a glass marble which has a very beautiful surface having an irregular pattern exposed on the upper surface and which can be bonded with ordinary cement and is easy to construct.

[0004]

In order to achieve the above object, according to the present invention, glass particles belonging to at least two particle size ranges are provided inside a mold in which aluminum oxide is sprayed on the inner bottom surface. Provided is a method for producing glass marble, which comprises laminating glass particles belonging to a small particle size range in order, slowly heating to a temperature near the melting point of the glass used in a firing furnace, and then stopping heating and cooling. . Moreover, according to this invention, the glass marble manufactured by the said manufacturing method is provided.

The main component of the glass marble of the present invention is glass particles obtained by crushing various kinds of waste glass such as injection medicine bottles, medicine bottles, drinking water bottles, etc. Then, as an accessory component to the glass particles, antimony trioxide for decolorizing the hue of waste glass, sodium nitrate as a defoaming agent, aluminum oxide for appropriately controlling the melting point of glass, and gloss. Add a small amount of sodium chloride and pigments for discharging. Hereinafter, the method for producing glass marble of the present invention will be described in detail for each step.

First Step (Pulverization) First, waste glass is pulverized with a pulverizer in a predetermined particle size range of 2 or more, preferably 10 to 120 mesh particles 1, 1 to 5 mesh particles 2 and 5 to 15 mm. The particles are roughly classified into three and crushed. However, the present invention is not limited to classification in such a particle size range, and it is within the scope of the present invention if the particle sizes are classified to such an extent that they have a difference in melting point.

Second Step (Lamination) As shown in FIG. 1, after the aluminum oxide 5 is evenly sprayed on the inner bottom surface of the refractory mold 4 of a predetermined size, for example, 97% of glass particles crushed to about 80 to 100 mesh. 1% of aluminum oxide, 0.5% of antimony trioxide, about 1% of sodium nitrate, and 0.5% of sodium chloride are mixed to a suitable thickness, preferably 0.3 to 0.5.
Stacked in cm, glass particles of about 1-5 mesh on top of it 9
7% to aluminum oxide 1%, antimony trioxide about 0.
Glass particles 2 mixed with 5%, sodium nitrate 1%, and sodium chloride 0.5% have an appropriate thickness, preferably 1.0 to
The particles are laminated with a thickness of 2.0 cm, and further glass particles 3 of about 5 to 15 mm are densely laminated on the upper surface thereof.

Third Step (Heating and Cooling) The laminated mold 4 is placed in a firing furnace to start heating, and the temperature is slowly raised to about 1070 ° C. near the melting point of glass used for plate glass or bottle glass. When the temperature is raised and then heating is stopped, and cold air is injected to cool the laminated glass, the laminated glass rises or descends while melting to complete a glass marble exhibiting a unique aesthetic sense.

The melting temperature of glass is usually 1350 ° C.
However, the powdery glass particles 1 laminated on the bottom surface of the mold 4 are all extremely melted at a temperature of about 920 ° C., which is lower than the above melting temperature, because the particle size is very small, and the 5 mesh glass laminated on the upper surface thereof. The particles 2 have a high melting point because they are mixed with a large amount of aluminum oxide, and at 920 ° C., they reach a dull state where they are not completely melted, that is, the softening point, and the pea-sized glass particles 3 on the uppermost surface are Melts and reaches the softening point where the lower part is sloppy.

From this point, the glass mixture in each part moves upward or downward while moving to form an irregular handle, that is, the powdery glass particles 1 in the lower part melt and rise upward, but on the upper surface thereof. Laminated glass particles of appropriate size 2
Partly and irregularly rises by the weight of, and the upper particulate glass particles 3 partly slowly descend and move relative to each other by the lower glass mixture.

Such vertical movement is actively performed from a temperature near the melting point of the glass, that is, a temperature of 1000 ° C. or higher. When a beautiful pattern is formed by this vertical movement, heating is stopped, the mold is taken out of the firing furnace and cooled with cold air, for example, at 20 ° C./min. As a result, the laminated glass mixture is cured while being vertically moved to complete a glass marble exhibiting a beautiful pattern.

FIG. 2 shows a state in which the glass mixture moves up and down due to a change in heat. The left side of this drawing shows the first laminated state, and the heating temperature is increased in order toward the right side. It shows the state. As the heating temperature rises, the lower glass mixture is melted and rises upward, while the upper glass particles move downward and move downward while reaching the softening point of the lower glass mixture. Therefore,
When heated continuously, the upper and lower positions are completely replaced and the beautiful pattern disappears. As shown in Fig. 3, when the glass particles on the upper side are heated and cooled until they appear on the upper surface, the pattern looks like a stone wall. appear.

FIG. 4 is a photograph showing a state in which the glass particles are moved by heat, and the right side shows a state in which the glass particles are deformed by heat from a side surface. The inner two show the state of being heated more and actively moving up and down, and the leftmost shows the complete state of moving up and down to show a beautiful and natural pattern. Figure 5 is a photo of this seen on a plane.
It shows the state of being deformed by heat from the left side to the right side. FIG. 6 is a photograph showing specific examples of the present invention showing various patterns, and it can be seen that glass marbles having various patterns are formed depending on the hue and the heating temperature.

The antimony trioxide mixed with the glass particles used in the production process of the present invention is a decolorizing agent, sodium nitrate and sodium chloride are used as defoaming agents to remove bubbles, and aluminum oxide is used as a catalyst for melting point. It has a function of lowering and adjusting the melting point of glass particles. Then, by spraying aluminum oxide on the inner bottom surface of the mold before laminating the glass mixture, the glass mixture is laminated and heated on the inner surface of the mold to complete the glass marble and release it from the mold. Not only is it easy, but aluminum oxide adheres to the bottom surface of the glass marble in a rough state, so that excellent adhesion can be obtained when the glass marble is adhered to the wall surface.

[0015]

The present invention will be described in more detail based on the following examples, but the invention is not intended to be limited to these examples. In addition, "%" shown below means% by weight.

(Example 1) Aluminum oxide (A-1) having a thickness of about 5 mm was sprayed on the inner bottom surface of a rectangular mold (horizontal 440 mm x length 600 mm x thickness 300 mm) having an open top surface, and the top surface thereof was sprayed. Aluminum oxide (A-2) 1%, antimony trioxide (B) 0.5%, sodium nitrate (C) 1
%, Sodium chloride (D) 0.5% mixed with 97% of 100-mesh glass powder, a glass mixture (first glass mixture) is laminated to a thickness of about 1 cm, and aluminum oxide 4% and trioxide are further provided on the upper surface thereof. A glass mixture (second glass mixture) in which 0.5% of antimony, 1% of sodium nitrate and 0.5% of sodium chloride are mixed with 94% of 5 mesh glass particles is laminated in a thickness of about 0.4 to 0.5 cm. Further, glass particles of about 5 mm (third glass particles) were densely laminated on the upper surface thereof.

The mold in which the glass mixture was laminated in this manner was put in a baking furnace and heated at 25 ° C./min to about 1
When the temperature was raised to 070 ° C, the heating was stopped, and it was taken out of the firing furnace and rapidly cooled to 500 ° C at 20 ° C / min, and further cooled to room temperature for 10 hours in the slow cooling chamber. As a result, a peculiar stone wall-shaped handle was formed in which the powdery glass mixture was sandwiched between the upper pea-sized glass particles and the like. When this was released from the mold, a beautiful glass marble was obtained in which aluminum oxide was rough and adhered to the bottom surface ((a) of FIG. 6).

Examples 2 to 6 In the same manner as in Example 1 except that the components and conditions shown in Table 1 below were used,
A glass marble was produced. The obtained glass marbles are shown in FIGS. 6 (b), (c), (d), (e) and (f), respectively.
It was shown to. However, in Examples (3) and (4),
Fe ₃ O ₄ was added as a pigment in an amount of 0.01% and 0.03% with respect to the total glass components.

[0019]

[Table 1]

[0020]

As described above, according to the present invention,
Not only is it very beautiful with its unique and natural pattern,
Since the whole is made of glass, it has excellent heat resistance, water resistance, and chemical resistance, maintains a beautiful pattern semipermanently, is inexpensive, and can be used as a construction material, and is highly useful as glass marble.

[Brief description of drawings]

FIG. 1 is a state diagram in which glass particles are stacked in order of size on a mold having an appropriate size.

FIG. 2 is an explanatory view sequentially showing a process in which the laminated glass of FIG. 1 is deformed according to a change in heat to be heated.

FIG. 3 is a sectional view showing a state where the glass is completely heated and completed.

FIG. 4 is a photograph sequentially showing the sides of the product that have been changed in response to changes in heat.

5 is a photograph showing the top surface of the product of FIG. 4. FIG.

FIG. 6 is a plan view photograph of various products manufactured according to the present invention.

[Explanation of symbols]

 1, 2, 3 Glass particles 4 Mold 5 Aluminum oxide (alumina)

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[Procedure amendment]

[Submission date] September 1, 1993

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] (Figure 4) to (Figure 6)

[Correction method] Change

[Correction content]

FIG. 4 is a photograph showing a particle structure sequentially showing the side portions of a product changed according to a change in heat.

5 is a photograph showing a grain structure showing an upper surface of the product of FIG. 4. FIG.

FIG. 6 is a plane photograph showing the grain structure of various products manufactured according to the present invention.

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Claims (5)

[Claims] 1. Inside a mold in which aluminum oxide is sprayed on the inner bottom surface, glass particles classified into at least two or more particle size ranges are sequentially laminated from a glass particle belonging to a small particle size range, and the mixture is heated in a firing furnace. A method for producing glass marble, which comprises slowly heating to a temperature near the melting point of the glass used, then stopping the heating and cooling. 2. The method for producing glass marble according to claim 1, wherein the particle size ranges are three: 10 to 120 mesh, 1 to 5 mesh, and 3 to 12 mm. 3. The melting point temperature is 1000 to 1100.
The method for producing a glass marble according to claim 1 or 2, wherein the temperature is 0 ° C. 4. When laminating glass particles, a small amount of aluminum oxide or antimony trioxide is laminated when laminating glass particles other than the glass particles belonging to the relatively largest particle size range which is finally laminated. The method for producing a glass marble according to any one of claims 1 to 3, wherein the glass marble is mixed with sodium nitrate and / or sodium chloride. 5. A glass marble produced by the method according to any one of claims 1 to 4.