Fine recessed etched glass and method of making

Abstract

The application provides a fine concave etching glass and a preparation method thereof, and belongs to the technical field of concave etching glass preparation. The preparation method comprises computerized texturing, film development, screen plate manufacturing, printing ink on the glass surface by using a silk screen oblique stretching process, polishing the printed glass by using a polishing liquid, ink removal, frosting, cleaning and drying, so that the fine concave etching glass is obtained. The application overcomes the problem that the ink is easily blocked when the silk screen printing etching protective ink is performed on the surface of the existing glass, so that the ink is not smooth and continuous, and the ink is easily broken. The application ensures that the ink is smooth and continuous when passing through the screen cloth, and cooperates with a specific polishing liquid etching to obtain a texture with a small surface printing line diameter, so that the fine concave etching glass is realized, and a glass product with high pattern fineness and low light pollution is obtained.

Description

Technical Field

[0001] This invention relates to the field of concave-dark glass preparation technology, and in particular to a refined concave-dark etched glass and its preparation method. Background Technology

[0002] Concave-etched glass refers to glass products with etched and three-dimensional patterns. The general manufacturing process involves screen printing frosted or glossy glass, or engraving etched patterns onto a glass protective film, then immersing the glass in a concave-etching solution for a period of time. After cleaning, the finished glass product is obtained. Concave-etched glass products produce bright, full, three-dimensional ice-crystal lines, achieving a unique artistic effect that cannot be achieved by ordinary engraving methods. The patterns can also be designed according to the user's purpose, thus giving it a wider range of applications compared to ordinary glass.

[0003] A certain invention patent discloses a frosted etching printing process for glass, including a first printing step (printing anti-corrosion ink onto a flat transparent glass), a first cleaning step (cleaning the surface of the glass after the first printing with a cleaning solution using ultrasound), a frosted etching step (etching away unwanted anti-corrosion ink on the glass to form a pattern layer), a smoothing step (smoothing the edge with a polishing machine), a deinking step (removing residual anti-corrosion ink from the glass with a strong alkaline solution), a second cleaning step, a second printing step (printing protective ink using a pre-designed patterned screen), and a third printing step (printing protective ink using a pre-designed patterned screen). Although this method combines multiple printing steps with frosted etching to give the glass surface pattern a raised, three-dimensional, and layered feel, the preparation process is complex, the etching precision is low, resulting in low industrial application value. Furthermore, the multiple printing steps affect the physical and chemical properties of the glass, thus affecting the practicality of the prepared product.

[0004] In view of this, it is necessary to design an improved fine-grained etched glass and its preparation method to solve the above problems. Summary of the Invention

[0005] In view of the technical problems existing in the background art, this application provides a refined concave-montmorillonite etched glass and its preparation method, aiming to solve the technical problems of low refinement and complex process steps of existing concave-montmorillonite etched glass.

[0006] The purpose of this invention is to provide a finely textured concave-convex etched glass and its preparation method. By using a screen printing process with oblique tension, the ink is ensured to flow smoothly and continuously through the screen. Combined with etching with a specific polishing liquid, a texture with a small printed line diameter is obtained on the surface, thus achieving finely textured concave-convex etched glass and obtaining glass products with a high degree of pattern refinement.

[0007] In a first aspect, embodiments of this application provide a method for preparing refined concave-convex etched glass, comprising the following steps: S1. Computerized texturing and film output: Drawing according to the required graphics and producing film; S2. Screen printing: The graphic from step S1 is transferred from film to the screen printing stencil for printing. S3. Clean the glass sheet thoroughly and print ink on the glass surface using a screen printing process. S4. Polish the glass printed in step S3 using a polishing solution for 1 to 3 minutes. The solute in the polishing solution includes hydrofluoric acid. S5. Remove ink: Immerse the glass polished in step S4 in alkaline solution for 3-5 minutes. S6. Frosting: Frost the glass after ink removal in step S5. S7. Clean and dry the glass after frosting in step S6 to obtain finely frosted glass.

[0008] In the technical solution of this application embodiment, by using a screen printing skew stretching process for fine printing, the problem that the ink is easily blocked when screen printing and etching protective ink on the glass surface, resulting in poor ink flow and easy ink breakage, is overcome; it ensures that the ink flows smoothly and continuously through the screen, and with the help of a specific polishing liquid for etching, a texture with a small printed line diameter is obtained, realizing fine concave etching glass and obtaining glass products with a high degree of pattern refinement.

[0009] In some embodiments, in step S3, the screen printing process involves using a diagonally stretched screen for ink printing, with the screen rotation angle being 15°~90°. The screen is 400~500 mesh, the ink curing temperature is 170~190℃, and the curing time is 25~35 minutes. The ink is a UV-protective ink, and the printing is performed using a slanted arm reciprocating printing press. The process involves fixing the diagonally stretched screen on the printing press, placing the UV-protective ink on the screen, scraping the ink into the mesh using a squeegee, and simultaneously applying pressure to scrape the ink onto the glass surface.

[0010] In this embodiment, an oblique mesh is used for ink printing. By limiting the turning angle of the mesh, the ink can be more easily leaked down, ensuring that the ink flows smoothly and continuously through the mesh. UV-protected ink is used, and after being copied onto the glass surface through a UV transfer process, its fine line diameter is above 0.001mm, which makes the pattern have a light-blocking effect. Subsequent etching with a concave etching process allows for the creation of a finer light-blocking pattern.

[0011] In some embodiments, in step S4, when the polishing solution is a hydrofluoric acid solution, the mass percentage concentration of hydrofluoric acid is 50% to 53%. The solute in the polishing solution also includes either hydrochloric acid or sulfuric acid. When the polishing solution is a mixed solution of hydrofluoric acid and hydrochloric acid, the mass percentage of hydrofluoric acid in the polishing solution is 20% to 40%, and the mass percentage of hydrochloric acid in the polishing solution is 5% to 10%; when the polishing solution is a mixed solution of hydrofluoric acid and sulfuric acid, the mass percentage of hydrofluoric acid in the polishing solution is 30% to 50%, and the mass percentage of hydrochloric acid in the polishing solution is 6% to 11%.

[0012] In this embodiment, by limiting the composition and content of the polishing liquid and coordinating with the polishing time, the depth of the etched texture can be adjusted within a suitable range, which is beneficial to the frosting effect of the subsequent frosting process, increases the matte effect of the glass, and reduces light reflection or light pollution of the glass products.

[0013] In some embodiments, in step S5, the alkaline solution is a sodium hydroxide solution with a mass percentage concentration of 8% to 12%; in step S6, the frosting process involves placing the glass after ink removal in step S5 into a frosting solution for frosting. The frosting solution comprises, by mass percentage, 35% hydrofluoric acid, 10% nitric acid, 15% hydrochloric acid, 5% sulfuric acid, and the balance being water. The material is one of AG, crystal, or rhinestone, and the particle size of the frosting material is 1.8 to 2.7 μm. In step S7, the cleaning process involves first rinsing with a high-pressure water gun, then placing the glass in a film washer for a second cleaning, and drying at a temperature of 140 to 160°C for 1 to 3 minutes.

[0014] Secondly, this application also provides a refined concave-convex etched glass, which is prepared by the above-mentioned method for preparing refined concave-convex etched glass. The refined concave-convex etched glass has a high degree of etching refinement and a good matte effect after frosting, which effectively solves the problem of light pollution in glass products.

[0015] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0017] Figure 1 This is a schematic flowchart illustrating the preparation method of refined concave-dark etched glass according to an embodiment of this application.

[0018] Figure 2 This is a physical image of the refined concave-montmorillonite etched glass prepared in Example 1 of the present invention. Detailed Implementation

[0019] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0024] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0025] Concave-etched glass products feature bright, full, three-dimensional ice-like lines on their surface, achieving a unique artistic effect that cannot be achieved through ordinary engraving methods. Their patterns can also be designed according to the user's intended use, thus offering a wider range of applications compared to ordinary glass. Current methods for preparing concave-etched glass generally combine multiple printing processes with frosting etching to create a raised, three-dimensional, and layered effect on the glass surface. However, the manufacturing process is complex, and the etching precision is low, resulting in limited industrial application value. Furthermore, the multiple printing processes can affect the physical and chemical properties of the glass, thereby impacting the practicality of the finished product.

[0026] To address the technical problems of low precision and complex process steps in existing concave-engraved glass, this application provides a refined concave-engraved glass and its preparation method. The preparation method of this application utilizes a screen printing skewer process for refined printing, overcoming the problems of ink blockage and ink leakage issues that occur when screen printing protective ink on the glass surface. This ensures smooth and uninterrupted ink flow through the screen, and combined with etching using a specific polishing solution, results in a texture with a smaller printed line diameter, achieving refined concave-engraved glass and obtaining glass products with a high degree of pattern precision.

[0027] For ease of explanation, the following embodiments use a refined concave-convex etched glass and its preparation method as an example.

[0028] Please refer to Figure 1 As shown, in a first aspect, embodiments of this application provide a method for preparing refined concave-convex etched glass, comprising the following steps: S1. Computerized texturing and film output: Drawing according to the required graphics and producing film; S2. Screen printing: The graphic from step S1 is transferred from film to the screen printing stencil for printing. S3. Clean the glass sheet thoroughly and print ink on the glass surface using a screen printing process. S4. Polish the glass printed in step S3 using a polishing solution for 1-3 minutes. The solute in the polishing solution includes hydrofluoric acid. S5. Remove ink: Immerse the glass polished in step S4 in alkaline solution for 3-5 minutes. S6. Frosting: Frost the glass after ink removal in step S5. S7. Clean and dry the glass after frosting in step S6 to obtain finely frosted glass.

[0029] This application overcomes the problem of ink being easily blocked and causing ink leakage and breakage when using screen printing etching protective ink on the glass surface in the existing process of screen printing etching. It ensures that the ink passes through the screen smoothly and without interruption. With the help of a specific polishing liquid etching, a texture with a small printing line diameter is obtained on the surface, realizing fine concave etching glass and obtaining glass products with a high degree of pattern fineness.

[0030] Further, in some embodiments, in step S3, the screen printing process involves using a diagonally stretched screen for ink printing, with the screen rotation angle being 15°~90°. The screen mesh is 400~500 mesh, the ink curing temperature is 170~190°C, and the curing time is 25~35 minutes. The ink is a UV-protective ink, and the printing is performed using a slanted arm reciprocating printing press. The process is as follows: the diagonally stretched screen is fixed on the printing press, the UV-protective ink is placed on the diagonally stretched screen, and a squeegee scrapes the UV-protective ink into the mesh openings while simultaneously applying pressure to scrape the UV-protective ink onto the glass surface.

[0031] In the technical solution of this application embodiment, oblique mesh printing is used. By limiting the turning angle of the mesh, the ink can more easily leak down, ensuring smooth and continuous ink flow as it passes through the mesh. UV-protected ink is used, and after being replicated on the glass surface through a UV transfer process, its fine line diameter is greater than 0.001mm, giving the resulting pattern a light-blocking effect. Subsequent etching using a debossing process results in an even finer light-blocking pattern. It should be noted that the turning angle of the mesh is between 15° and 90°; in some more specific embodiments, the actual turning angle used is 22.5°.

[0032] Furthermore, in some embodiments, in step S4, when the polishing solution is a hydrofluoric acid solution, the mass percentage concentration of hydrofluoric acid is 50%~53%. The solute in the polishing solution also includes either hydrochloric acid or sulfuric acid. When the polishing solution is a mixed solution of hydrofluoric acid and hydrochloric acid, the mass percentage of hydrofluoric acid in the polishing solution is 20%~40%, and the mass percentage of hydrochloric acid in the polishing solution is 5%~10%; when the polishing solution is a mixed solution of hydrofluoric acid and sulfuric acid, the mass percentage of hydrofluoric acid in the polishing solution is 30%~50%, and the mass percentage of hydrochloric acid in the polishing solution is 6%~11%.

[0033] In the technical solution of this application embodiment, by limiting the composition and content of the polishing liquid and coordinating with the polishing time, the depth of the etched texture can be adjusted within a suitable range, which is beneficial to the frosting effect of the subsequent frosting process, increases the matte effect of the glass, and reduces light reflection or light pollution of the glass product.

[0034] Further, in some embodiments, in step S5, the alkaline solution is a sodium hydroxide solution with a mass percentage concentration of 8% to 12%; in step S6, the frosting process involves placing the glass after ink removal in step S5 into a frosting solution for frosting. The frosting solution comprises, by mass percentage, 35% hydrofluoric acid, 10% nitric acid, 15% hydrochloric acid, 5% sulfuric acid, and the balance being water. The material is one of AG, crystal diamond, or rhinestone, and the particle size of the frosting material is 1.8 to 2.7 μm. In step S7, the cleaning process involves first rinsing with a high-pressure water gun, then placing the glass in a film washer for a second cleaning, and drying at a temperature of 140 to 160°C for 1 to 3 minutes.

[0035] Secondly, this application also provides a refined concave-convex etched glass, which is prepared by the above-mentioned method for preparing refined concave-convex etched glass. The refined concave-convex etched glass has a high degree of etching refinement and a good matte effect after frosting, which effectively solves the problem of light pollution in glass products.

[0036] The following are some specific embodiments. It should be noted that the embodiments described below are exemplary and are only used to explain this application, and should not be construed as limiting this application. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in this field or according to the product instructions. Reagents or instruments whose manufacturers are not specified are all conventional products that can be obtained commercially.

[0037] Example 1 This embodiment provides a method for preparing refined concave-convex etched glass, including the following steps: S1. Computerized texturing and film output: Drawing according to the required graphics and producing film; S2. Screen printing: The graphic from step S1 is transferred from film to the screen printing stencil for printing. S3. Clean the glass sheet thoroughly and print ink on the glass surface using a screen printing process with an oblique tension. The oblique tension screen printing process involves using an oblique tension screen for ink printing, with a tension angle of 45° and a screen mesh of 400. The ink is UV protective ink. The specific printing process involves using an oblique arm reciprocating printing machine, fixing the oblique tension screen on the printing machine, placing the UV protective ink on the oblique tension screen, and scraping the UV protective ink into the mesh through a squeegee while applying pressure to scrape the UV protective ink onto the glass surface. S4. Polish the glass printed in step S3 using a polishing solution for 1.5 min. The polishing solution is a mixture of hydrofluoric acid and hydrochloric acid, with hydrofluoric acid accounting for 30% of the mass and hydrochloric acid accounting for 5% of the mass. S5. Remove ink: Immerse the glass polished in step S4 in a 10% sodium hydroxide solution for 4 minutes. S6. Frosting: The glass after ink removal in step S5 is placed in AG solution for frosting. The particle size of AG is 1.8~2.7 μm. The components of AG solution include 35% hydrofluoric acid, 10% nitric acid, 15% hydrochloric acid, 5% sulfuric acid and the balance water by mass percentage. S7. The glass after frosting in step S6 is first rinsed with a high-pressure water gun to remove the residual reagent on the glass surface, then placed in a washing machine for a second cleaning, and finally dried at 150°C for 2 minutes to obtain finely frosted glass.

[0038] Please see Figure 2 The image shown is a physical picture of the refined concave-etched glass prepared in Example 1. As can be seen from the picture, the surface of the refined concave-etched glass prepared in Example 1 has a high degree of pattern refinement in its fine texture.

[0039] Example 2 This embodiment provides a method for preparing refined concave-convex etched glass. Compared with Embodiment 1, the difference is that in step S3, the mesh stretching angle is 80°, and the rest is roughly the same as in Embodiment 1, which will not be repeated here.

[0040] Example 3 This embodiment provides a method for preparing refined concave-convex etched glass. Compared with Embodiment 1, the difference is that in step S3, the ink is a common etching protective ink (components and contents include: 65%~75% phenolic epoxy modified resin, 1%~2% mixed additives, 10%~25% lipid mixture, 0.2%~1% silicon dioxide, 0.2%~1% blue powder, and 15%~25% talc), and its baking temperature is 180℃ for 30 min. The rest is roughly the same as in Embodiment 1 and will not be repeated here.

[0041] Comparative Example 1 Comparative Example 1 provides a method for preparing concave-montmorillonite etched glass. The difference from Example 1 is that in step S3, the screen stretching process is not used, and the stretching screen has no turning angle. The rest is roughly the same as Example 1, and will not be repeated here.

[0042] Comparative Example 2 Comparative Example 2 provides a method for preparing concave-montmorillonite etched glass. The difference from Example 1 is that in step S3, the mesh turning angle is 10°. The rest is roughly the same as in Example 1 and will not be described again here.

[0043] The concave-montmorillonite etched glass prepared in Examples 1-3 and Comparative Examples 1-2 was tested for relevant properties, including the surface line diameter after etching, light reflectance coefficient and light blocking rate. The results are shown in the table below.

[0044] Table 1. Performance characterization of the etched glass in Examples 1-3 and Comparative Examples 1-2 As shown in Table 1, when the screen printing process is used for fine printing in the examples, the surface printed with a small wire diameter has a high density, low light reflection and light blocking rate, and good light transmission effect. However, when the screen printing process is not used in Comparative Example 1 and the screen turning angle is only 10° in Comparative Example 2, the resulting glass texture is large and low in density, with strong light reflection, resulting in a high degree of light pollution in the product.

[0045] Example 4 This embodiment provides a method for preparing refined concave-convex etched glass. Compared with Embodiment 1, the difference is that in step S4, the polishing liquid is a hydrofluoric acid solution with a mass percentage concentration of 50%. The rest is roughly the same as in Embodiment 1 and will not be repeated here.

[0046] Example 5 This embodiment provides a method for preparing refined concave-convex etched glass. Compared with Embodiment 1, the difference is that in step S4, the polishing solution is a mixed solution of hydrofluoric acid and sulfuric acid. The mass ratio of hydrofluoric acid in the polishing solution is 40%, and the mass ratio of sulfuric acid in the polishing solution is 7%. The rest is roughly the same as in Embodiment 1, and will not be repeated here.

[0047] Comparative Example 3 Comparative Example 3 provides a method for preparing concave-montmorillonite etched glass. The difference from Example 1 is that in step S4, the polishing solution is a hydrofluoric acid solution with a mass percentage concentration of 60% in the polishing solution. The rest is roughly the same as in Example 1 and will not be repeated here.

[0048] Comparative Example 4 Comparative Example 4 provides a method for preparing concave-montmorillonite etched glass. The difference from Example 1 is that in step S4, the polishing solution is a mixed solution of hydrofluoric acid and hydrochloric acid. The mass percentage of hydrofluoric acid in the polishing solution is 60%, and the mass percentage of hydrochloric acid in the polishing solution is 5%. The rest is roughly the same as in Example 1, and will not be repeated here.

[0049] The concave-montmorillonite etched glasses prepared in Examples 4-5 and Comparative Examples 3-4 were tested for relevant properties, including the surface line diameter and etching depth after etching. The results are shown in the table below.

[0050] Table 2. Performance characterization of the etched glass from Examples 4-5 and Comparative Examples 3-4 As shown in Table 2, Examples 1 and 4-5 of this application, by adjusting the composition and content of the polishing slurry and coordinating with the polishing time, allow the depth of the etched texture to be adjusted within a suitable range. This is beneficial to the frosting effect of the subsequent frosting process, increases the matte effect of the glass, and reduces light reflection or light pollution of the glass products. In contrast, the polishing slurry concentration in Comparative Examples 3-4 is higher. Although a deeper etched glass texture is obtained, its line diameter is larger and the degree of refinement is lower.

[0051] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A method for preparing refined concave-convex etched glass, characterized in that, Includes the following steps: S1. Computerized texturing and film output: Drawing according to the required graphics and producing film; S2. Screen printing: The graphic from step S1 is transferred from film to the screen printing stencil for printing. S3. Clean the glass sheet thoroughly and print ink on the glass surface using a screen printing process with an angled tension. S4. Polish the glass printed in step S3 using a polishing solution for 1 to 3 minutes. The solute in the polishing solution includes hydrofluoric acid. S5. Remove ink by soaking the glass polished in step S4 in alkaline solution for 3-5 minutes. S6. Frosting: Frost the glass after ink removal in step S5. S7. Clean and dry the glass after frosting in step S6 to obtain finely frosted glass.

2. The method for preparing refined concave-convex etched glass according to claim 1, characterized in that, In step S3, the screen printing process involves using a diagonally stretched screen for ink printing, with the screen rotation angle being 15°~90°.

3. The method for preparing refined concave-convex etched glass according to claim 1, characterized in that, In step S4, the solute in the polishing solution also includes either hydrochloric acid or sulfuric acid.

4. The method for preparing refined concave-convex etched glass according to claim 2, characterized in that, The screen is 400-500 mesh, and the ink curing temperature is 170-190℃ for 25-35 minutes.

5. The method for preparing refined concave-convex etched glass according to claim 4, characterized in that, In step S3, the ink is a UV-protective ink, which has the characteristics of rapid curing and shaping.

6. The method for preparing refined concave-convex etched glass according to claim 1, characterized in that, In step S4, the polishing liquid is a hydrofluoric acid solution with a mass percentage concentration of 50% to 53%.

7. The method for preparing refined concave-convex etched glass according to claim 3, characterized in that, When the polishing solution is a mixed solution of hydrofluoric acid and hydrochloric acid, the mass percentage of hydrofluoric acid in the polishing solution is 20% to 40%, and the mass percentage of hydrochloric acid in the polishing solution is 5% to 10%; when the polishing solution is a mixed solution of hydrofluoric acid and sulfuric acid, the mass percentage of hydrofluoric acid in the polishing solution is 30% to 50%, and the mass percentage of hydrochloric acid in the polishing solution is 6% to 11%.

8. The method for preparing refined concave-convex etched glass according to claim 1, characterized in that, In step S5, the alkaline solution is a sodium hydroxide solution with a mass percentage concentration of 8% to 12%; in step S6, the frosting process involves placing the glass after ink removal in step S5 into a frosting solution for frosting. The frosting solution comprises, by mass percentage, 35% hydrofluoric acid, 10% nitric acid, 15% hydrochloric acid, 5% sulfuric acid, and the balance being water. The material is one of AG, crystal, or rhinestone, and the particle size of the frosting material is 1.8 to 2.7 μm.

9. The method for preparing refined concave-convex etched glass according to claim 1, characterized in that, In step S7, the cleaning process involves first rinsing with a high-pressure water gun, then placing the film in a film washer for a second cleaning, and drying at a temperature of 140~160℃ for 1~3 minutes.

10. A refined concave-convex etched glass, characterized in that, The refined concave-montmorillonite etched glass is prepared by the method for preparing refined concave-montmorillonite etched glass according to any one of claims 1 to 9.

Images