CN115550479A - Glass cover plate with starry sky AG effect and preparation method thereof - Google Patents

Abstract

The invention provides a glass cover plate with a starry sky AG effect and a preparation method thereof, wherein the preparation method of the glass cover plate with the starry sky AG effect comprises the following steps: carrying out sand blasting on the surface of the glass cover plate to form a micro pit structure on the surface of the glass cover plate; and performing AG etching on the surface of the glass cover plate with the fine pit structure to form a starry sky texture structure on the surface of the glass cover plate, thereby obtaining the glass cover plate with the starry sky AG effect. According to the glass cover plate with the starry sky AG effect and the preparation method thereof, sand blasting and AG etching treatment are sequentially carried out on the surface of the glass cover plate, so that a starry sky texture structure is formed on the surface of the glass cover plate, and the effect similar to that of a dark night starry sky is presented.

Description

Glass cover plate with starry sky AG effect and preparation method thereof

Technical Field

The invention relates to the technical field of material surface treatment, in particular to a glass cover plate with a starry sky AG effect and a preparation method thereof.

Background

With the advent of the 5G era, the application of glass cover plates in the mobile phone industry has become mainstream, but the disadvantages brought by common smooth glass are reflected, for example: fingerprint printing, scratch resistance, poor hand feeling and the like; in order to solve the defects of common glass, an AG treatment process is carried out as follows: plating AG, spraying AG and chemically etching AG. The coating AG is called as dizzy coating, which is an atomization coating technology, the purpose of reducing reflected light is achieved by carrying out fine concave-convex processing on the surface of a polaroid, the coating AG has higher reflectivity to visible light and higher reflectivity to infrared rays, but the coating AG has low hardness, is good in writing hand feeling and has very limited application range. The AG is sprayed by a layer of coating attached to the surface of glass through spraying equipment (a spray gun or a butterfly type atomizer), although the processing technology is convenient and fast, the production efficiency is high, AG glass with various specifications can be processed very conveniently, the AG layer is easy to fall off due to the influence of environment and use factors, and the surface of the AG glass has poor abrasion resistance. The general chemical etching AG adopts a strong acid corrosion mode to generate a fine groove on the glass surface, thereby greatly reducing the light reflection on the glass surface, and although the treated glass surface has high hardness, long scratch resistance service life, good hand touch feeling and a certain degree of anti-fingerprint performance, the texture effect which can only be realized is limited.

Considering that the homogenization phenomenon of the electronic product in the current market is particularly serious, that is, the appearance structure of the cover plate of the electronic product in the prior art is not greatly different, so that the aesthetic fatigue of users is caused. In order to break through the stiff of single appearance and serious homogenization of the product and endow the glass cover plate with an AG effect, the complicated process actually required is obviously far from being insufficient as a supporting technology.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a glass cover plate with a starry sky AG effect and a preparation method thereof.

The invention provides a preparation method of a glass cover plate with a starry sky AG effect, which comprises the following steps:

s1, sand blasting is carried out on the surface of a glass cover plate so as to form a fine pit structure on the surface of the glass cover plate;

s2, performing AG etching on the surface of the glass cover plate with the fine pit structure to form a starry sky texture structure on the surface of the glass cover plate, and obtaining the glass cover plate with the starry sky AG effect.

Preferably, the sand blasting sand material is a sand material mixed by different grain diameters, and the sand material is preferably green silicon carbide with the grain diameter ranging from 10 to 300 mu m;

preferably, the blasting pressure is 0.2-1.0Mpa, the conveyor belt speed is 5-50 MM/sec, and the spray gun swing speed is 5-50 MM/sec.

Preferably, the sandblasting of the surface of the glass cover plate further comprises:

and spraying photosensitive ink on the surface of the glass cover plate to form a photosensitive protective layer, and exposing and developing the photosensitive protective layer to form a photosensitive protective layer with a star-shaped pattern.

Preferably, the sand blasting is performed on the surface of the glass cover plate, and specifically comprises the following steps:

the surface of the glass cover plate of the photosensitive protective layer with the star-shaped pattern is subjected to sand blasting to form a fine pit structure on the surface of the glass cover plate in an area except for the star-shaped pattern.

Preferably, the AG etching of the surface of the glass cover plate having the fine pit structure further includes: and removing the photosensitive protective layer with the star-shaped patterns on the surface of the glass cover plate.

Preferably, the AG etching of the surface of the glass cover plate having the fine pit structure specifically includes: and (4) immersing the glass cover plate into the AG etching liquid for a preset time to carry out AG etching.

Preferably, the AG etching of the surface of the glass cover plate having the fine pit structure further includes: spraying acid-resistant protective ink on the surface of the glass cover plate except the glass cover plate with the micro pit structure to form an acid-resistant protective layer;

preferably, the acid-resistant protective layer has a thickness of 20 to 25 μm.

The invention also provides a glass cover plate with a starry sky AG effect, which is prepared by the preparation method.

The invention provides a preparation method of a glass cover plate with a starry sky AG effect, which comprises the steps of processing the glass cover plate by sand blasting to form micro pit structures with different sizes on the surface of the glass cover plate, then carrying out AG etching treatment on the glass surface with the micro pit structures with different sizes, and utilizing AG etching liquid to carry out different etching degrees on the glass surface with the micro pit structures with different sizes, so that a plurality of AG areas respectively presenting a starry spot effect and a night sky effect are formed on the surface of the glass cover plate, and the starry sky AG treatment effect on the surface of the glass cover plate is obtained.

According to the preparation method of the glass cover plate with the starry sky AG effect, the starry sky AG treatment effect of the other glass cover plate surface can be obtained. Specifically, a photosensitive protective layer is formed on the surface of the glass cover plate, a photosensitive protective layer with a star-shaped pattern is formed through exposure and development, then sand blasting is performed, the photosensitive protective layer with the star-shaped pattern is resistant to sand material spraying, the surface of the glass cover plate covered by the photosensitive protective layer with the star-shaped pattern is protected, fine pits are formed on the surface of the glass cover plate which is not covered by the photosensitive protective layer with the star-shaped pattern, and then the photosensitive protective layer is removed and subjected to AG etching treatment. Therefore, the special area on the surface of the glass cover plate is protected by the photosensitive protective layer simulating the star shape, the area is only subjected to etching treatment, and compared with the area on the surface of the glass cover plate which is not protected by the photosensitive protective layer, the area is subjected to sand blasting and etching treatment at the same time, and finally the two areas form a sharp contrast effect and present a unique star AG effect.

Drawings

FIG. 1 is a glass cover plate with a starry sky AG effect;

fig. 2 shows another glass cover plate with a starry sky AG effect.

Detailed Description

The technical solutions of the present invention are described in detail below by specific examples, but it should be clear that these examples are presented for illustration, but are not to be construed as limiting the scope of the present invention.

The invention provides a glass cover plate with a starry sky AG effect, and a preparation method of the glass cover plate comprises the following steps:

(1) Providing a glass cover plate, spraying acid-resistant protective ink on the back surface of the glass cover plate, and forming an acid-resistant protective layer on the back surface of the glass cover plate after baking and curing;

in the embodiment, the acid-resistant protection layer is formed on the back surface of the glass cover plate, so that the acid-resistant protection on the back surface of the glass cover plate is realized, and the influence on the back surface of the glass cover plate during subsequent acid etching is avoided;

in this embodiment, in order to make bonding more firm between acid-resistant protective layer and the glass apron, the toast curing process can include prebaking and final baking, prebaking: 85 +/-5 ℃/7 +/-1 min, final baking: 150-180 ℃/30min, so that the acid-resistant protective ink can be effectively attached to the glass cover plate; meanwhile, in order to ensure that the back surface of the glass cover plate can bear subsequent sand blasting and corrosion liquid erosion, the thickness of the acid-resistant protective layer is selected to be 20-25 mu m;

(2) Sand blasting is carried out on the front surface of the glass cover plate with the acid-resistant protective layer on the back surface, so that the front surface of the glass cover plate is coarsened, and a fine pit structure is formed on the front surface of the glass cover plate;

in the embodiment, the sand used for sand blasting is a sand mixed with different particle sizes, the sand with different particle sizes is used for impacting the surface of the glass cover plate with different sizes, when sand blasting is carried out on the sand mixed with different particle sizes, pits with different sizes and different roughness are formed on the front surface of the glass cover plate, and thus when AG etching is further carried out on the front surface of the glass cover plate subsequently, different AG etching effects are formed in pit areas with different sizes on the front surface of the glass cover plate;

in the embodiment, in order to ensure that a pit structure with certain roughness can be formed on the front surface of the glass cover plate, green silicon carbide with the particle size range of 10-300 mu m is adopted for sand blasting, the sand blasting pressure is 0.2-1.0Mpa, the speed of a conveyor belt is 5-50 MM/s, and the swing speed of a spray gun is 5-50 MM/s;

(3) Performing AG etching on the front surface of the glass cover plate with the micro pit structure, specifically, immersing the glass cover plate into an etching solution (acid solution) for a preset time to form a starry sky texture structure on the front surface of the glass cover plate;

in this embodiment, a chemical reaction occurs on the front surface of the glass cover plate in the etching solution, the front surface of the glass cover plate subjected to sand blasting is further eroded, and since pit structures with different sizes are formed at different positions on the front surface of the glass cover plate subjected to sand blasting, etching effects of the etching solution at the pits with different sizes are different from each other, after etching treatment is performed for a period of time, AG areas with different sizes and respectively showing a star point effect and a night sky effect are formed in each area on the front surface of the glass cover plate, so that a star sky AG effect is obtained;

(4) And finally, ink removing treatment is carried out on the back surface of the glass cover plate, and the acid-resistant protective layer on the back surface of the glass cover plate is removed, so that the glass cover plate with the starry sky AG effect shown in figure 1 is obtained.

Referring to fig. 1, in the glass cover plate obtained in the present embodiment, the front surface is a starry sky texture structure, and a starry sky flickering effect with a plurality of white stars dotted on a dark bottom surface is presented. Compare and need complicated technology to handle the glass apron among the prior art, for example handle glass apron AG many times, just can obtain this kind of starry sky texture, directly through the sandblast in this embodiment, AG etching two steps can be obtained, simple process and light and shade contrast effect are obvious.

Example 2

The invention also provides a glass cover plate with a starry sky AG effect, and the preparation method specifically comprises the following steps:

(1) Providing a glass cover plate, spraying acid-resistant protective ink on the back surface of the glass cover plate, and forming an acid-resistant protective layer on the back surface of the glass cover plate after baking and curing;

in the embodiment, the acid-resistant protection layer is formed on the back surface of the glass cover plate, so that the acid-resistant protection on the surface of the glass cover plate is realized, and the influence on the back surface of the glass cover plate during subsequent acid etching is avoided; meanwhile, in order to make the bonding between the acid-resistant protective layer and the base material firmer, the baking and curing process comprises prebaking and final baking, wherein the prebaking comprises the following steps: 85 +/-5 ℃/7 +/-1 min, final baking: 150-180 deg.C/30 min; moreover, in order to ensure that the back surface of the glass cover plate can bear the subsequent sand blasting and corrosion liquid erosion, the thickness of the acid-resistant protective layer can be selected to be 20-25 μm;

(2) Spraying photosensitive ink on the front surface of the glass cover plate with the acid-resistant protective layer on the back surface, and forming a photosensitive protective layer on the front surface of the glass cover plate after curing;

in the embodiment, in order to avoid the point dropping and falling off of the photosensitive protective layer in the subsequent sand blasting treatment, the photosensitive ink can be selected from the photosensitive ink doped with the toughening agent, so that the obtained photosensitive protective layer has high toughness; meanwhile, in order to ensure that the bonding between the photosensitive protective layer and the glass cover plate is firmer, the curing temperature is 110-120 ℃, and the time is 1-2min; in order to enhance the bearing performance of the photosensitive protective layer in the subsequent sand blasting treatment, the thickness of the photosensitive protective layer is 2-5 μm;

(3) A mask plate is additionally arranged on the front surface of the glass cover plate with the photosensitive protective layer on the front surface, exposure and development are carried out, and the photosensitive protective layer with star-shaped patterns is formed on the front surface of the glass cover plate;

in the embodiment, the mask covers partial areas on the photosensitive protective layer, the photosensitive protective film corresponding to the partial areas is a star-shaped pattern, and the photosensitive protective layer which is not covered by the mask is removed through exposure and development, namely the photosensitive protective layer with the star-shaped pattern is formed;

(4) Sand blasting is carried out on the front surface of the glass cover plate with the star-shaped pattern photosensitive protection layer, so that a fine pit structure is formed in an area, which is not protected by the photosensitive protection layer, of the front surface of the glass cover plate, and the area, which is protected by the photosensitive protection layer, is not affected;

in the embodiment, the sand blasting is to physically erode the surface of the glass cover plate by using the impact effect of high-speed sand flow, so that the surface of the glass cover plate forms an uneven structure; in this embodiment, the sand used for sand blasting may be a sand with the same particle size, preferably green silicon carbide with a particle size of 10-300 μm, the sand blasting pressure is 0.2-1.0Mpa, the conveyor belt speed is 5-50 MM/s, and the spray gun swinging speed is 5-50 MM/s;

(5) Removing the photosensitive protective layer on the front surface of the glass cover plate, and performing AG etching on the front surface of the glass cover plate, namely immersing the glass cover plate into an etching solution (acid solution) for a preset time to form a starry sky texture structure on the front surface of the glass cover plate;

in the embodiment, the photosensitive protective layer on the front surface of the glass cover plate can be removed by adopting a general photoresist stripping process, the photoresist stripping liquid can adopt a 5% NaOH solution, and the photoresist stripping temperature is 50 +/-2 ℃;

in the embodiment, the front surface of the glass cover plate is subjected to chemical reaction in the etching solution, so that the rugged AG treatment effect is formed; during the sand blasting treatment, the area of the front surface of the glass cover plate protected by the photosensitive protective layer is not eroded by sand blasting, and the area of the front surface of the glass cover plate not protected by the photosensitive protective layer is roughened by sand blasting erosion in advance, so that after the glass cover plate with the photosensitive protective layer removed is subjected to etching treatment, the AG treatment effects corresponding to the protected area and the unprotected area on the front surface of the glass cover plate are different; and the protection area is correspondingly in the shape of a star pattern, so that the obtained glass cover plate finally shows a starry sky AG effect.

(6) And finally, performing ink removing treatment on the back surface of the glass cover plate, and removing the acid-resistant protective layer on the back surface of the glass cover plate to obtain the glass cover plate with the starry sky AG effect shown in the figure 2.

Referring to fig. 2, in the present embodiment, the front surface of the glass cover plate exhibits a contrast effect of light and dark by decorating a plurality of stars in the night sky. Compare in through carrying out different AG at the positive different areas of glass apron and handling to obtain the glass apron that has starry sky AG effect, this embodiment is direct through the sandblast, and AG etching can be obtained, and simple process just has more clear distinguishable pattern line between corresponding star point and the AG effect area in night sky.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims (8)

1. A preparation method of a glass cover plate with a starry sky AG effect is characterized by comprising the following steps:

s1, carrying out sand blasting on the surface of a glass cover plate to form a micro pit structure on the surface of the glass cover plate;

s2, performing AG etching on the surface of the glass cover plate with the fine pit structure to form a starry sky texture structure on the surface of the glass cover plate, and obtaining the glass cover plate with the starry sky AG effect.

2. The method for preparing a glass cover plate with starry sky AG effect as claimed in claim 1, wherein the sandblasting sand material is a mixture of sand materials with different particle sizes, preferably green silicon carbide, and the particle size range is 10-300 μm;

preferably, the blasting pressure is 0.2-1.0Mpa, the conveyor belt speed is 5-50 MM/sec, and the spray gun swing speed is 5-50 MM/sec.

3. The method for preparing a glass cover plate with starry sky AG effect as claimed in claim 1 or 2, wherein the sand blasting the surface of the glass cover plate further comprises:

and spraying photosensitive ink on the surface of the glass cover plate to form a photosensitive protective layer, and exposing and developing the photosensitive protective layer to form a photosensitive protective layer with a star-shaped pattern.

4. The method for preparing a glass cover plate with a starry sky AG effect as claimed in claim 3, wherein the step of sand blasting the surface of the glass cover plate specifically comprises the following steps:

and sandblasting the surface of the glass cover plate of the photosensitive protective layer with the star-shaped patterns to form a fine pit structure on the surface of the glass cover plate except for the star-shaped patterns.

5. The method for preparing a glass cover plate with starry sky AG effect as claimed in claim 3 or 4, wherein the AG etching is performed on the surface of the glass cover plate with the fine pit structure, and the method further comprises the following steps: and removing the photosensitive protective layer with the star-shaped patterns on the surface of the glass cover plate.

6. The method for preparing a glass cover plate with a starry sky AG effect according to any one of claims 1 to 5, wherein the AG etching is performed on the surface of the glass cover plate with a fine pit structure, and specifically comprises the following steps: and immersing the glass cover plate into the AG etching liquid for a preset time to perform AG etching.

7. The method for preparing a glass cover plate with a starry sky AG effect as claimed in any one of claims 1 to 6, wherein the AG etching is performed on the surface of the glass cover plate with a fine pit structure, and the method further comprises the following steps: spraying acid-resistant protective ink on the surfaces of other glass cover plates except the glass cover plates with the micro pit structures to form an acid-resistant protective layer;

preferably, the acid-resistant protective layer has a thickness of 20 to 25 μm.

8. A glass cover plate with starry sky AG effect, which is prepared by the preparation method of any one of claims 1 to 7.

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