Frosted glass and preparation process thereof
By setting a roughened surface and light-transmitting layer on both sides of the frosted glass, the light propagation path is optimized, and the problem of inconsistent color when observed at different angles is solved, achieving uniformity of observation effects and decorative uniformity.
Patent Information
- Application Number
- CN202510501373.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2025-08-01
AI Technical Summary
The existing frosted glass has inconsistent colors when observed at different angles, resulting in uneven observation effects.
Roughened surfaces are provided on both sides of the glass layer, and a matte effect is formed by sandblasting and liquid-polishing treatment. Combining the light-transmissive layer and the impermeable layer, the propagation path of light in the glass is optimized.
By setting roughened surfaces and light-transmitting layers on both sides of the glass layer, the scattering effect of light in the glass is improved, the transmitted light intensity is enhanced, and the specular reflection is reduced, and the consistency of color observations is achieved at each angle.
Smart Images
Figure CN120398433A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of glass manufacturing, in particular to frosted glass and a preparation process thereof. Background Art
[0002] Existing technologies often use a glass layer, an anti-reflection layer, and a coating layer, which is sandblasted on one side or printed on plain glass, or printed on after physical vapor deposition (PVD). When such frosted glass receives light at different angles, the color shows inconsistent reflection effects at different angles, resulting in poor color uniformity at all angles. Summary of the Invention
[0003] In view of this, an object of the present invention is to provide a frosted glass and a preparation process thereof, which can improve the consistency of color observed at various angles.
[0004] In one aspect, the present invention provides a frosted glass comprising: a color coating, a glass layer disposed on the color coating, and an anti-reflection layer disposed on the glass layer;
[0005] The side of the glass layer that is in contact with the color coating layer and the side that is in contact with the anti-reflection layer are both provided with a roughened surface.
[0006] Optionally, the frosted glass further includes a light-transmitting layer disposed between the color coating and the glass layer.
[0007] Optionally, the color coating has a thickness ranging from 2um to 100um.
[0008] Optionally, the thickness of the light-transmitting layer ranges from 0.1um to 5um.
[0009] Optionally, the glass layer has a thickness ranging from 0.03 mm to 10 mm.
[0010] Optionally, the thickness of the anti-reflection layer ranges from 5 nm to 2000 nm.
[0011] Optionally, the light-transmitting layer includes a silicon oxide layer and a silicon carbide layer.
[0012] In another aspect, the present invention provides a process for preparing frosted glass, comprising the following steps:
[0013] performing sandblasting or frosting on the upper and lower surfaces of the glass substrate to obtain sandblasted glass;
[0014] performing liquid polishing on the upper and lower surfaces of the sandblasted glass to obtain a glass layer;
[0015] Deposit a light-transmitting layer on the lower surface of the glass layer, and coat a color coating on the light-transmitting layer;
[0016] Sputter an anti-reflection layer on the upper surface of the glass layer to obtain frosted glass.
[0017] Optionally, polish the upper and lower surfaces of the sandblasted glass with an aqueous sodium hydroxide solution for 40 minutes to 5 hours; or
[0018] Polish the upper and lower surfaces of the sandblasted glass with an aqueous hydrofluoric acid solution for 10 seconds to 20 minutes; to obtain the glass layer.
[0019] Optionally, sandblast or frost the upper and lower surfaces of the glass substrate to obtain sandblasted glass, specifically including:
[0020] Sandblast or frost the upper surface of the glass substrate, and clean the glass substrate, and stick a protective film on the sandblasted upper surface;
[0021] Sandblast or frost the lower surface of the glass substrate with the protective film attached to obtain the sandblasted glass.
[0022] Implementing the present invention includes the following beneficial effects: By providing roughened surfaces on both the upper and lower surfaces of the glass layer, when light is incident on the lower surface close to the color coating, the uneven surface on the roughened surface can reflect light at various angles, improving the light propagation trajectory in the glass, reducing specular reflection, and double-sided frosting causes the incident light to scatter multiple times in the glass layer, reducing the angle sensitivity; the anti-reflection layer reduces the surface reflection loss and enhances the transmitted light intensity; the transmitted light after multiple scattering is superimposed with the reflected light of the color coating to form a uniform color performance at different viewing angles, making the color effects felt by the observer more consistent at various angles. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In the figure, 1-color coating, 2-glass layer, 3-anti-reflection layer, 4-light-transmitting layer, 5-reflected light, 6-incident light, 21-upper roughened surface, 22-lower roughened surface.
[0024] Figure 1 is a schematic structural diagram of a frosted glass provided by the present invention;
[0025] Figure 2 is a schematic structural diagram of another frosted glass provided by the present invention;
[0026] Figure 3 is a process flow diagram of the preparation of a frosted glass provided by the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For the step numbers in the following embodiments, they are only set for the convenience of description and explanation, and no limitation is imposed on the order between steps. The execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.
[0028] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms "a" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0029] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.
[0030] In addition, in the description of the present application, unless otherwise specified, "a plurality of" means two or more. It can be understood that within the numerical protection scope disclosed in the present invention, due to the errors existing in the numerical values and the gap of 10 times the errors, they should also fall within the protection scope of the present invention.
[0031] In some embodiments, as Figure 1 shown, Figure 1 is a schematic structural diagram of a frosted glass provided by the present invention. The present invention provides a frosted glass, including: a color coating, a glass layer provided on the color coating, and an antireflection layer provided on the glass layer; both the side of the glass layer in contact with the color coating and the side in contact with the antireflection layer are provided with roughened surfaces.
[0032] Specifically, the thickness range of the color coating can be but is not limited to 2 um - 100 um. For example, 10 um, 15 um, 20 um, 50 um, 60 um, 65 um, 70 um, 75 um, 80 um, 85 um, 90 um. The material of the color coating can be but is not limited to ink or other paints with pigments.
[0033] The thickness range of the glass layer can be but is not limited to 0.03 mm - 10 mm. For example, 0.5 mm, 1 mm, 2 mm, 3 mm, 5 mm, 5.5 mm, 6 mm, 7 mm, 8 mm, 9 mm.
[0034] The thickness range of the anti-reflection layer can be, but is not limited to, 5 nm - 2000 nm, such as 100 nm, 150 nm, 200 nm, 300 nm, 1000 nm, 1500 nm. The anti-reflection layer can increase the light transmittance of the glass from 93% to over 97%.
[0035] The roughened surface can be, but is not limited to, a rough surface formed on the upper and lower surfaces of the glass layer by sandblasting technology, chemical etching, laser etching, etc. The roughness Ra of the roughened surface can be, but is not limited to, 0.5 μm - 5 μm, for example, 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, 4 μm.
[0036] The sand grain size of the roughened surface can be, but is not limited to, sand grains controlled by D10, D50 or D90, where by controlling D10 > 15 μm, D50 is 29 μm - 33 μm, and D90 < 52 μm. D10 > 15 μm means that 10% of the grit diameters are greater than 15 μm.
[0037] In some embodiments, as Figure 2 shown, Figure 2 is a schematic structural diagram of another frosted glass. Different from the aforementioned frosted glass, another frosted glass further includes a light-transmitting layer disposed between the color coating and the glass layer.
[0038] Specifically, the thickness range of the light-transmitting layer can be, but is not limited to, 0.1 μm - 5 μm, such as 0.5 μm, 1 μm, 2 μm, 3 μm, 4 μm. The light-transmitting layer includes a silicon oxide layer and a silicon carbide layer. The material of the silicon oxide layer includes SiO2, and the material of the silicon carbide layer includes Si3N4.
[0039] The number of the silicon oxide layer and the silicon carbide layer is not limited. When there are multiple silicon oxide layers and silicon carbide layers, the silicon oxide layer and the silicon carbide layer can be stacked with each other to obtain the light-transmitting layer. For example, silicon oxide layer - silicon carbide layer - silicon oxide layer or silicon oxide layer - silicon oxide layer - silicon carbide layer.
[0040] In some embodiments, the present invention, as Figure 3 shown, Figure 3 is a process flow chart of the preparation of a frosted glass. The present invention provides a preparation process for a frosted glass, including the following steps:
[0041] S1. Perform sandblasting or frosting treatment on the upper and lower surfaces of the glass substrate to obtain the glass after sandblasting.
[0042] Specifically, before step S1, the glass can also be cut to form several small pieces of glass, and several means more than two.
[0043] The upper surface of the glass substrate is subjected to sandblasting or frosting treatment, and the glass substrate is cleaned. A protective film is attached to the sandblasted upper surface; the lower surface of the glass substrate with the protective film attached is subjected to sandblasting or frosting treatment to obtain sandblasted glass. The frosting treatment includes chemical etching or laser etching.
[0044] Among them, the sand particle size of the sandblasting is the same as the previous explanation, and the sandblasting pressure range of the sandblasting treatment includes 50 Kpa - 5 Mpa, such as 1 Mpa, 2 Mpa, 3 Mpa, 4 Mpa. The sandblasting time can be but is not limited to 10 seconds - 500 seconds, such as 20 seconds, 50 seconds, 100 seconds, 200 seconds, 250 seconds, 350 seconds, 400 seconds.
[0045] The protective film includes but is not limited to a plastic film, a paint film layer, a glue film, etc., and is used to protect the sandblasted surface from being scratched.
[0046] S2. The upper and lower surfaces of the sandblasted glass are subjected to liquid polishing treatment to obtain a glass layer.
[0047] Specifically, the liquid polishing treatment includes polishing the upper and lower surfaces of the sandblasted glass with an aqueous sodium hydroxide solution for 40 minutes - 5 hours; or polishing the upper and lower surfaces of the sandblasted glass with an aqueous hydrofluoric acid solution for 10 seconds - 20 minutes; to obtain the glass layer.
[0048] Among them, the aqueous sodium hydroxide solution includes 30% - 50% NaOH + 50% - 70% water, and the total of water and NaOH is 1. The liquid polishing temperature can be but is not limited to 100 - 120 degrees Celsius, such as 115 degrees Celsius.
[0049] The aqueous hydrofluoric acid solution includes 3% - 20% HF + 80% - 97% water, and the total of water and HF is 1. The liquid polishing temperature: room temperature.
[0050] S3. A light-transmitting layer is deposited on the lower surface of the glass layer, and a color coating is applied on the light-transmitting layer.
[0051] Specifically, the explanations of the light-transmitting layer and the color coating are the same as those described above.
[0052] S4. An antireflection layer is sputtered on the upper surface of the glass layer to obtain frosted glass.
[0053] Specifically, the explanation of the antireflection layer is the same as those described above.
[0054] The present invention also has the following beneficial effects:
[0055] By providing roughened surfaces on both the upper and lower surfaces of the glass layer, when light is incident on the lower surface close to the color coating, the uneven surfaces on the roughened surfaces can reflect light at various angles, improving the light's running trajectory in the glass, making the color effects felt by the observer more consistent at various angles, achieving better decorative unity, and enhancing the product's user experience.
[0056] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A frosted glass, characterized in that, It includes: a color coating, a glass layer disposed on the color coating, and an anti-reflection layer disposed on the glass layer; Both the side of the glass layer that adheres to the color coating and the side that adheres to the anti-reflection layer are provided with roughened surfaces.
2. The frosted glass according to claim 1, wherein The frosted glass further includes a light-transmitting layer disposed between the color coating and the glass layer.
3. The frosted glass according to claim 1, characterized in that, The thickness range of the color coating is 2 μm - 100 μm.
4. The frosted glass according to claim 2, characterized in that, The thickness range of the light-transmitting layer is 0.1 μm - 5 μm.
5. According to claim 1, characterized in that, The thickness range of the glass layer is 0.03 mm - 10 mm.
6. According to claim 1, characterized in that, The thickness range of the anti-reflection layer is 5 nm - 2000 nm.
7. According to claim 2, wherein The light-transmitting layer includes a silicon oxide layer and a silicon carbide layer.
8. A preparation process of frosted glass, characterized in that, It includes the following steps: Perform sandblasting treatment or frosting treatment on the upper surface and the lower surface of the glass substrate to obtain sandblasted glass; Perform liquid polishing treatment on the upper surface and the lower surface of the sandblasted glass to obtain a glass layer; Deposit a light-transmitting layer on the lower surface of the glass layer, and coat a color coating on the light-transmitting layer; Sputter an anti-reflection layer on the upper surface of the glass layer to obtain frosted glass.
9. The preparation process according to claim 9, characterized in that, The performing liquid polishing treatment on the upper surface and the lower surface of the sandblasted glass to obtain a glass layer specifically includes: Perform a polishing treatment on the upper surface and the lower surface of the sandblasted glass with an aqueous sodium hydroxide solution for 40 minutes - 5 hours; Or Perform a polishing treatment on the upper surface and the lower surface of the sandblasted glass with an aqueous hydrofluoric acid solution for 10 seconds - 20 minutes; to obtain the glass layer.
10. The preparation process according to claim 9, characterized in that, The performing sandblasting treatment or frosting treatment on the upper surface and the lower surface of the glass substrate to obtain sandblasted glass specifically includes: Perform sandblasting treatment or frosting treatment on the upper surface of the glass substrate, and clean the glass substrate, and stick a protective film on the sandblasted upper surface; Perform sandblasting treatment or frosting treatment on the lower surface of the glass substrate with the protective film attached to obtain the sandblasted glass.