Production and processing technology of dark blue glass bottle

Abstract

The invention provides a production and processing technology of a dark blue glass bottle, which comprises the following steps: S1, preparing a composition for glass production, and crushing and mixing glass raw materials to obtain the composition; the glass raw materials comprise the following components in percentage by mass: 12%-15% of yellow sand, 5%-6.5% of calcite, 15%-17% of potassium albite, 6%-7% of sodium carbonate, 0.02%-0.1% of cobalt oxide, 0.02%-0.05% of carbon powder, 0.5%-0.9% of anhydrous sodium sulphate and 54%-61% of cullet. S2, the composition is fed into a smelting furnace to be melted into molten glass, the molten glass is injected into a determinant bottle making machine to be subjected to blowing forming, and a glass bottle is obtained; and S3, the glass bottle is subjected to heat treatment after being subjected to annealing treatment. According to the invention, the problem of structural strength of a colored glass bottle can be solved, the manufactured blue glass bottle has excellent light transmission performance and good aesthetic property, meanwhile, the problems of overlarge and non-uniform internal stress of a bottle body in a glass bottle production process are avoided, and the requirement on the aesthetic property of the bottle body of the glass bottle is met while the strength of the glass bottle is maintained.

Description

Technical Field

[0001] The invention belongs to a production method of colored glass bottles, and specifically relates to a production and processing technology of dark blue glass bottles. Background Art

[0002] Glass bottles are widely used in the existing packaging field. Today, 71% of the world's beer is bottled in glass beer bottles. China accounts for 55% of the global glass beer bottles, exceeding 50 billion bottles per year. Because glass bottles have excellent properties such as good light transmittance, chemical stability and hardness, they are not easy to react with the internal contents. Even when many kinds of packaging materials are flooding the market, glass containers still occupy an important position in the packaging field. As a commonly used packaging material, in actual use, glass bottles of different shapes, sizes and colors will be manufactured according to the needs of users to highlight the uniqueness of the packaged products. Blue is a cool color, which is more prominent at the visual level and can attract the user's attention. It is a more popular color among the public, so blue glass bottles are also a more popular glass container.

[0003] The blue glass bottle is made by adding colorants to the glass raw materials and then firing them through melting, molding and other steps. Depending on the added colorants, the blue color of the glass bottle will also show different effects. However, since the production raw materials are different from those of ordinary glass bottles, the light transmittance of the blue glass bottle tends to decrease, resulting in a decrease in the visual perception of the glass bottle. The change in raw materials also causes changes in the internal structure of the glass bottle. During the production process, the change in the internal stress structure of the glass bottle will cause the yield rate of the glass bottle to decrease. The mechanical properties of the glass bottle such as drop resistance and wear resistance during use will also decrease. Therefore, the present invention is aimed at the research and development of the production process of the blue glass bottle to improve the light transmittance and mechanical properties of the blue glass bottle. Summary of the invention

[0004] The present invention provides a production and processing technology of a dark blue glass bottle, comprising the following steps: S1: According to the raw material formula of glass bottles, a composition for glass production is prepared, and the glass raw materials are crushed and mixed to obtain a composition for melting. The glass raw materials include, by mass fraction, 12% to 15% yellow sand, 5% to 6.5% calcite, 15% to 17% potassium and sodium feldspar, 6% to 7% soda ash, 0.02% to 0.1% cobalt oxide, 0.02% to 0.05% carbon powder, 0.5% to 0.9% alum and 54% to 61% cullet.

[0005] S2: sending the treated composition into a glass melting furnace for high-temperature melting, wherein the glass raw materials are melted at high temperature inside the melting furnace to obtain glass liquid, and then the glass liquid is injected into a determinant bottle making machine through a flow channel, and after two processes of primary molding and final molding, a glass bottle is obtained after being blown into shape; S3: The formed glass bottle is sent to an annealing furnace for annealing treatment to reduce the internal stress of the glass bottle and improve the body strength of the glass bottle. The strength of the glass bottle is further improved by heat treatment to obtain a glass bottle with excellent physical properties.

[0006] In order to further improve the light transmission performance and strength of glass bottles, the glass raw materials increase zirconium dioxide 0.6% to 0.9%, yttrium trioxide 0.9% to 1.5%, boron oxide 0.3% to 0.8% and manganese dioxide 0.03% to 0.05%. Zirconium dioxide can be used as a nucleating agent to allow the glass to crystallize evenly, and the light transmission performance of the glass can be controlled by controlling the size of the crystal. Yttrium trioxide can increase the network density in the glass and improve the structural strength of the glass. Boric oxide can form triangular and tetrahedral structures in the glass, effectively improving the structural strength of the glass while reducing the expansion coefficient of the glass. Manganese dioxide can improve the coloring effect of the glass and improve the color of the glass.

[0007] As the most preferred embodiment of the present invention, the glass raw materials are composed of 13% yellow sand, 6% calcite, 16% potassium-sodium feldspar, 6% soda ash, 0.05% cobalt oxide, 0.03% carbon powder, 0.8% glauber salt, 0.9% zirconium dioxide, 1.2% yttrium trioxide, 0.5% boron oxide, 0.03% manganese dioxide, and broken glass of the remaining components.

[0008] Since cobalt oxide, carbon powder and manganese dioxide account for a small proportion of the raw materials, if cobalt oxide, carbon powder and manganese dioxide are directly mixed with other raw materials, the cobalt oxide, carbon powder and manganese dioxide will be unevenly distributed in the composition, resulting in unsatisfactory glass melting effect and uneven structural strength of the finished glass. To this end, the mixing process of cobalt oxide, carbon powder and manganese dioxide is divided into four steps. The first step is to mix cobalt oxide, carbon powder and manganese dioxide to obtain a first mixture, and let the cobalt oxide, carbon powder and manganese dioxide be evenly mixed with each other first. The second step is to mix the first mixture with broken glass in a ratio of 1:30~35 to obtain a second mixture, and preliminarily mix the cobalt oxide, carbon powder and manganese dioxide in the broken glass. The third step is to mix the second mixture with the broken glass in a ratio of 1:10 to obtain a third mixture, and further mix the cobalt oxide, carbon powder and manganese dioxide in the broken glass. The fourth step is to mix the third mixture with the remaining glass raw materials, and completely mix the cobalt oxide, carbon powder and manganese dioxide with other raw materials to avoid that the glass has been prepared before the cobalt oxide, carbon powder and manganese dioxide have not had time to be mixed evenly, which ultimately results in the glass not only failing to form a uniform blue color, but also affecting the optical and physical properties of the glass.

[0009] Annealing treatment is to keep the glass bottle at 575~580℃ for 20~25min, then cool it to 185~195℃ at a cooling rate of 2℃ / min, and finally cool it to room temperature at a cooling rate of 10℃ / min. Heating to the annealing temperature can adjust the mass point of the glass bottle and relax the stress. After keeping the temperature for a period of time, the temperature is evenly lowered, which is conducive to eliminating the temperature difference generated in the glass bottle and eliminating the inherent internal stress.

[0010] As a preferred embodiment of the present invention, in step S2, the pressure inside the furnace is maintained at 6-8 Pa during melting, and the melting temperature is controlled at 1550-1650°C.

[0011] The production and processing technology of the dark blue glass bottle provided by the present invention can solve the structural strength problem of colored glass bottles. The manufactured blue glass bottle has excellent light transmission performance. While maintaining the dark blue color of the bottle body, it presents a blue transparent effect, the blue color is evenly distributed, and has good aesthetic performance. At the same time, the structural strength of the blue glass bottle produced is greatly improved, avoiding the problem of excessive and uneven internal stress of the bottle body during the production process of the glass bottle, preventing the glass bottle from bursting during the production process, and improving the drop resistance of the glass bottle during use. Wear resistance, while maintaining the strength of the glass bottle, meets the requirements for the aesthetic performance of the glass bottle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described in detail below with reference to the accompanying drawings.

[0013] Figure 1Schematic diagram of the appearance structure of the manufactured dark blue glass bottle. DETAILED DESCRIPTION

[0014] To further illustrate the concept of the present invention, the specific implementation of the present invention will be further described below in conjunction with the accompanying drawings: Embodiment 1

[0015] A production and processing technology for a dark blue glass bottle comprises the following steps: S1: preparing a composition for glass production, wherein the glass raw materials include, by mass fraction, 12% yellow sand, 6.5% calcite, 15% potassium-sodium feldspar, 6% soda ash, 0.02% cobalt oxide, 0.02% carbon powder, 0.5% glauber salt, 0.9% zirconium dioxide, 0.9% yttrium trioxide, 0.3% boron oxide, 0.05% manganese dioxide and cullet of the remaining components, and all the glass raw materials are crushed and mixed to obtain the composition; S2: The composition is fed into a melting furnace to be melted into glass liquid, the pressure during melting is 6 Pa, and the melting temperature is 1650°C. The glass liquid is injected into a determinant bottle making machine for blow molding to obtain a glass bottle; S3: After the glass bottle is annealed, the glass bottle is kept at a temperature of 575°C for 25 minutes, then cooled to 195°C at a cooling rate of 2°C / min, and finally cooled to room temperature at a cooling rate of 10°C / min, and then heat treated again. Embodiment 2

[0016] A production and processing technology for a dark blue glass bottle comprises the following steps: S1: Prepare a composition for glass production, wherein the glass raw materials include 15% yellow sand, 5% calcite, 15% potassium-sodium feldspar, 7% soda ash, 0.1% cobalt oxide, 0.05% carbon powder, 0.9% glauber salt, 0.6% zirconium dioxide, 1.5% yttrium trioxide, 0.8% boron oxide, 0.03% manganese dioxide and remaining components of broken glass in mass fractions; after the glass raw materials are crushed into powders respectively, the cobalt oxide, carbon powder and manganese dioxide are first mixed to obtain a first mixture; the first mixture is then mixed with broken glass in a ratio of 1:35 to obtain a second mixture; the second mixture is then mixed with broken glass in a ratio of 1:10 to obtain a third mixture; and finally the third mixture is mixed with the remaining glass raw materials.

[0017] S2: The composition is fed into a melting furnace to be melted into glass liquid, the pressure during melting is 8 Pa, and the melting temperature is 1550°C. The glass liquid is injected into a determinant bottle making machine for blow molding to obtain a glass bottle; S3: After the glass bottle is annealed, the glass bottle is kept at a temperature of 80°C for 20 minutes, then cooled to 185°C at a cooling rate of 2°C / min, and finally cooled to room temperature at a cooling rate of 10°C / min, and then heat treated again. Embodiment 3

[0018] A production and processing technology for a dark blue glass bottle comprises the following steps: S1: Prepare a composition for glass production, wherein the glass raw materials include 14% yellow sand, 6% calcite, 15% potassium-sodium feldspar, 6.5% soda ash, 0.05% cobalt oxide, 0.04% carbon powder, 0.6% glauber salt, 0.7% zirconium dioxide, 1.2% yttrium trioxide, 0.5% boron oxide, 0.03% manganese dioxide and remaining components of broken glass in mass fractions; after the glass raw materials are crushed into powders respectively, the cobalt oxide, carbon powder and manganese dioxide are first mixed to obtain a first mixture, and then the first mixture is mixed with broken glass in a ratio of 1:30 to obtain a second mixture, and then the second mixture is mixed with broken glass in a ratio of 1:10 to obtain a third mixture, and finally the third mixture is mixed with the remaining glass raw materials.

[0019] S2: The composition is sent into a melting furnace to be melted into glass liquid, the pressure during melting is 7 Pa, and the melting temperature is 1600°C. The glass liquid is injected into a determinant bottle making machine for blow molding to obtain a glass bottle; S3: After the glass bottle is annealed, the glass bottle is kept at a temperature of 580°C for 20 minutes, then cooled to 190°C at a cooling rate of 2°C / min, and finally cooled to room temperature at a cooling rate of 10°C / min, and then heat treated again. Embodiment 4

[0020] A production and processing technology for a dark blue glass bottle comprises the following steps: S1: Prepare a composition for glass production, wherein the glass raw materials include 12% yellow sand, 5% calcite, 15% potassium-sodium feldspar, 7% soda ash, 0.03% cobalt oxide, 0.04% carbon powder, 0.7% glauber salt, 0.8% zirconium dioxide, 1.3% yttrium trioxide, 0.7% boron oxide, 0.04% manganese dioxide and remaining components of broken glass in mass fractions; after the glass raw materials are crushed into powders respectively, the cobalt oxide, carbon powder and manganese dioxide are first mixed to obtain a first mixture; the first mixture is then mixed with broken glass in a ratio of 1:30 to obtain a second mixture; the second mixture is then mixed with broken glass in a ratio of 1:10 to obtain a third mixture; and finally the third mixture is mixed with the remaining glass raw materials.

[0021] S2: The composition is sent into a melting furnace to be melted into glass liquid, the pressure during melting is 7 Pa, and the melting temperature is 1600°C. The glass liquid is injected into a determinant bottle making machine for blow molding to obtain a glass bottle; S3: After the glass bottle is annealed, the glass bottle is kept at a temperature of 580°C for 20 minutes, then cooled to 190°C at a cooling rate of 2°C / min, and finally cooled to room temperature at a cooling rate of 10°C / min, and then heat treated again. Embodiment 5

[0022] A production and processing technology for a dark blue glass bottle comprises the following steps: S1: Prepare a composition for glass production, wherein the glass raw materials include 13% yellow sand, 6% calcite, 16% potassium-sodium feldspar, 6% soda ash, 0.05% cobalt oxide, 0.03% carbon powder, 0.8% glauber salt, 0.9% zirconium dioxide, 1.2% yttrium trioxide, 0.5% boron oxide, 0.03% manganese dioxide and remaining components of broken glass in mass fractions; after the glass raw materials are crushed into powders respectively, the cobalt oxide, carbon powder and manganese dioxide are first mixed to obtain a first mixture; the first mixture is then mixed with broken glass in a ratio of 1:30 to obtain a second mixture; the second mixture is then mixed with broken glass in a ratio of 1:10 to obtain a third mixture; and finally the third mixture is mixed with the remaining glass raw materials.

[0023] S2: The composition is fed into a melting furnace to be melted into glass liquid, the pressure during melting is 7 Pa, and the melting temperature is 1650°C. The glass liquid is injected into a determinant bottle making machine for blow molding to obtain a glass bottle; S3: After the glass bottle is annealed, the glass bottle is kept at a temperature of 580°C for 25 minutes, then cooled to 195°C at a cooling rate of 2°C / min, and finally cooled to room temperature at a cooling rate of 10°C / min, and then heat treated again.

[0024] The glass bottle manufactured by the process provided by the present invention is as follows Figure 1 As shown, it has a dark blue color and good light transmittance, has good light transmittance, and has good drop resistance and wear resistance, which effectively solves the problem of substandard structural strength of colored glass bottles.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various changes and variations may occur. Any modifications, equivalent substitutions, improvements, etc. made using the present invention should be included in the scope of protection of the present invention.

Claims

1. A production and processing technology for dark blue glass bottles, characterized in that: The following steps are involved: S1: preparing a composition for glass production, crushing and mixing glass raw materials to obtain the composition; The glass raw materials include yellow sand 12% to 15%, calcite 5% to 6.5%, feldspar 15% to 17%, soda ash 6% to 7%, cobalt oxide 0.02% to 0.1%, carbon powder 0.02% to 0.05%, sodium sulfate 0.5% to 0.9% and broken glass 54% to 61% by mass fraction; S2: sending the composition into a melting furnace to melt into glass liquid, injecting the glass liquid into a determinant bottle making machine for blow molding to obtain a glass bottle; S3: After the glass bottle is annealed, it is heat treated.

2. The production and processing technology of the dark blue glass bottle according to claim 1 is characterized by: The glass raw materials also include zirconium dioxide 0.6% to 0.9%, yttrium trioxide 0.9% to 1.5%, boron oxide 0.3% to 0.8% and manganese dioxide 0.03% to 0.05% by mass fraction.

3. The production and processing technology of the dark blue glass bottle according to claim 1 is characterized by: The glass raw materials include, by mass fraction, 13% yellow sand, 6% calcite, 16% potassium-sodium feldspar, 6% soda ash, 0.05% cobalt oxide, 0.03% carbon powder, 0.8% glauber salt, 0.9% zirconium dioxide, 1.2% yttrium trioxide, 0.5% boron oxide, 0.03% manganese dioxide, and cullet of the remaining components.

4. The production and processing technology of the dark blue glass bottle according to claim 3 is characterized by: The mixing process in step S1 is to crush the glass raw materials into powders respectively, first mix cobalt oxide, carbon powder and manganese dioxide to obtain a first mixture, then mix the first mixture with cullet in a ratio of 1:30-35 to obtain a second mixture, then mix the second mixture with cullet in a ratio of 1:10 to obtain a third mixture, and finally mix the third mixture with the remaining glass raw materials.

5. The production and processing technology of the dark blue glass bottle according to claim 4 is characterized by: The annealing treatment is to keep the glass bottle at a temperature of 575-580° C. for 20-25 minutes, then cool it to 185-195° C. at a cooling rate of 2° C. / min, and finally cool it to room temperature at a cooling rate of 10° C. / min.

6. The production and processing technology of the dark blue glass bottle according to claim 5 is characterized by: In the step S2, the pressure during melting is 6-8 Pa, and the melting temperature is 1550-1650°C.

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