Coated glass, preparation method thereof, laminated glass and vehicle

Abstract

The invention provides coated glass and a preparation method thereof, laminated glass and a vehicle, the preparation method comprises the following steps: S1, providing a glass substrate which comprises a coating area and a film removing area connected with the coating area; s2, coating layers are formed on the surfaces of the coating area and the film removing area, and a to-be-treated part is obtained; and S3, removing the coating layer on the surface of the film removal area of the to-be-treated piece by adopting water jet to prepare the coated glass. According to the invention, an abrasive water jet method is adopted, so that not only can a coating layer on the surface of a film removal area be removed, but also the glass surface corresponding to the film removal area can be polished; therefore, the purpose of removing the film of the coated glass is achieved, and the problem of optical deformation in the film removing area of the coated glass and at the junction of the film removing area and the ink printing area is solved.

Description

Technical Field

[0001] The invention relates to the field of glass products and their production, in particular to window glass installed on a vehicle and its production, and specifically provides a coated glass and a preparation method thereof, laminated glass and a vehicle. Background Art

[0002] The use of coating technology to coat functional films on the surface of automotive glass, such as silver-based coatings or transparent conductive films with low reflection functions, to achieve the effects of heat insulation, low reflection, electric heating, etc., has been increasingly widely used.

[0003] The processing steps of windshield are: pretreatment, bending, lamination, etc.; the processing steps of windshield coated with functional film are: pretreatment, coating, bending, lamination, etc.; among them, bending includes self-weight baking bending and pressing.

[0004] With the gradual promotion and application of assisted driving and autonomous driving, the role of windshield as a functional integrated component is becoming increasingly prominent. Windshield will integrate functional electronic components such as ETC, RFID, rain sensor, camera, LiDAR, etc. However, the above functional film has a shielding effect on electromagnetic waves. When the above functional film is coated on the surface of automobile glass, especially the surface of windshield, it will affect the normal use of these electronic components.

[0005] In order to ensure the normal use of these electronic components, it is usually necessary to remove the film in the functional window area corresponding to the inner surface of the windshield, thereby forming a non-functional film area. The existing film removal methods generally include pre-coating film removal and post-coating film removal. Among them, pre-coating film removal includes the pre-coating cover plate masking method and the printing protective coating method (see CN112456811A for details); and post-coating film removal generally uses mechanical stripping, chemical etching or laser means to remove the film. Taking laser film removal as an example, combined with the processing procedures of the windshield, post-coating film removal is divided into two types, one is laser film removal before molding, and the other is laser film removal after molding. Specifically, the pre-coating cover plate masking method can effectively form a film removal area and connect production, but there are disadvantages such as the coating boundary line width, the cover plate needs regular maintenance, and the light distortion of the film removal area after molding is poor. Laser film removal technology before molding has the advantages of being able to effectively form the film removal area, continuous production, good boundaries and thorough film removal. However, it also has disadvantages such as poor optical distortion in the film removal area after molding. In addition, since the functional window area and the coating area have different degrees of absorption of the furnace wire heat radiation in the furnace, the coating area reflects a large amount of the furnace wire heat radiation in the furnace, while the functional window area normally absorbs the furnace wire heat radiation in the furnace (similar to uncoated glass), forming a huge contrast between the two.

[0006] The post-molding laser film removal technology is an upgraded version of the above-mentioned film removal technologies. It can effectively solve the defects of the above-mentioned technologies, especially the optical distortion defect. However, it still has problems such as inability to connect, slow beat, residual film layer or color difference at the joint, which affects the normal use or appearance of electronic components. In addition, due to the large area of ​​the film removal window, the laser beam needs to divide the area into several small areas and complete them step by step when scanning, which makes it difficult to accurately splice the small areas. In addition, the glass surface around the film removal window area is generally a black block area, that is, the concentrated area of ​​the printed black edge. Due to the large difference in the absorption of the heat radiation of the furnace wire by the black edge and the glass when forming in the furnace, it will still cause optical differences and large optical distortion at the junction of the black edge.

[0007] Therefore, providing a new type of coated glass and a preparation method thereof, laminated glass and a vehicle has become a technical problem that urgently needs to be solved in the field. Summary of the invention

[0008] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to reduce the optical performance of the film removal area of ​​the coated glass.

[0009] In order to solve the above technical problems, a technical solution adopted by the present invention is: a method for preparing coated glass, the preparation method comprising the following steps:

[0010] S1. providing a glass substrate, wherein the glass substrate comprises a coating area and a film removal area connected to the coating area;

[0011] S2, forming a coating layer on the surfaces of the coating area and the film removal area to obtain a workpiece to be processed;

[0012] S3. Using a water jet to remove the coating layer on the surface of the coating removal area of ​​the workpiece to be processed to obtain coated glass.

[0013] As a specific implementation of the above method of the present invention, in step S1, the method for preparing coated glass further includes step S01:

[0014] S01. Providing an original glass sheet, wherein the original glass sheet has an ink printing area, and forming an ink printing layer on the surface of the ink printing area to obtain the glass substrate;

[0015] In step S1 , the ink printing area at least partially surrounds the film removal area.

[0016] As a specific implementation of the above method of the present invention, in step S2, the method for preparing coated glass further includes step S02:

[0017] S02, after forming the coating layer on the surfaces of the coating area and the film removal area, performing hot bending forming to obtain a formed glass;

[0018] In step S02, the shaped glass is the piece to be processed.

[0019] As a specific implementation of the above method of the present invention, in step S3, the coating layer on the surface of the film removal area is removed by the water jet, and at the same time, the water jet polishes the glass surface corresponding to the film removal area.

[0020] In the above-described method of the present invention, the present invention uses a water jet to act on the coating layer on the surface of the film removal area to achieve the purpose of film removal. In addition, after the coating layer is formed on the surface of the coating area and the film removal area of ​​the glass substrate, a hot bending process is performed. Since the glass substrate also has an ink printing area that at least partially surrounds the film removal area, a temperature gradient is generated between the ink printing area and the film removal area during the hot bending process, which leads to optical deformation problems at the junction of the ink printing area and the film removal area, as well as in the film removal area. The present invention uses a water jet to polish the glass surface of the film removal area, which can improve the optical deformation problem in the film removal area of ​​the coated glass and at the junction of the film removal area and the ink printing area.

[0021] As a specific implementation of the above method of the present invention, abrasive is mixed in the water jet.

[0022] As a specific implementation of the above method of the present invention, the mass ratio of abrasive to water in the water jet is 1:5-1:30.

[0023] As a specific implementation of the above method of the present invention, the abrasive includes one or a combination of aluminum oxide, cerium oxide, garnet and corundum.

[0024] As a specific implementation of the above method of the present invention, the particle size of the abrasive is 50-150 μm.

[0025] As a specific implementation of the above method of the present invention, the water temperature in the water jet is 20-30°C.

[0026] In the above method of the present invention, abrasive is mixed in the water jet, that is, the present invention adopts an abrasive water jet method to form coated glass. The abrasive water jet method uses a water jet mixed with fine abrasive particles sprayed out at high speed from a nozzle orifice to act on the coating layer on the surface of the film removal area and the glass surface corresponding to the film removal area. Through the high-speed collision and shearing action of the abrasive particles, the synergistic effect of film removal and polishing is achieved, and the production cycle of the abrasive water jet method is relatively fast.

[0027] As a specific implementation of the above method of the present invention, the distance between the nozzle of the water jet and the workpiece to be treated is 2-60 mm.

[0028] As a specific implementation of the above method of the present invention, the moving speed of the water jet nozzle is 3-30 mm / s.

[0029] As a specific implementation of the above method of the present invention, the angle between the nozzle of the water jet gun and the workpiece to be processed is 0-8°.

[0030] As a specific implementation of the method described above, the shape of the water jet nozzle includes circular, elliptical or slit-shaped. The present invention does not make specific requirements on the size of the nozzle, and it can be reasonably selected according to the actual situation on site. For example, in some embodiments of the present invention, when the shape of the nozzle is circular, its diameter is ≤0.5mm; when the shape of the nozzle is slit-shaped, its width is ≤0.3mm, and the length is not limited, such as 30-50mm.

[0031] As a specific implementation of the above method of the present invention, the air source pressure used by the water jet is greater than or equal to 0.3 MPa.

[0032] As a specific implementation of the above method of the present invention, the treatment depth of the water jet is greater than the thickness of the coating layer and is less than or equal to 100 μm.

[0033] As a specific implementation of the above method of the present invention, the treatment depth of the water jet is greater than 3 times the thickness of the coating layer and is less than or equal to 50 μm.

[0034] In the above method of the present invention, the treatment depth of the water jet is greater than the thickness of the coating layer to ensure thorough and clean film removal, and the treatment depth of the water jet is less than or equal to 100 μm to ensure polishing of the glass surface in the film removal area.

[0035] As a specific embodiment of the method described above, the coating layer is one or a combination of two or more of a thermal insulation film, a low-emissivity film, an anti-reflection film, a heating film, an optical cutoff film or a decorative film.

[0036] On the other hand, the present invention also provides a coated glass, which is made by the above-mentioned coated glass preparation method, and the coated glass includes a glass substrate and a coating layer, the glass substrate includes a coating area and a film removal area connected to the coating area, and the coating layer is arranged in the coating area.

[0037] As a specific embodiment of the above-mentioned coated glass of the present invention, the glass substrate further includes an ink printing area, the ink printing area at least partially surrounds the film removal area, and the ink printing layer is arranged in the ink printing area.

[0038] As a specific embodiment of the above-mentioned coated glass of the present invention, the glass substrate is a hot-bent glass plate.

[0039] On the other hand, the present invention further provides a vehicle, comprising a vehicle body and the above-mentioned coated glass, wherein the coated glass is mounted on the vehicle body.

[0040] On the other hand, the present invention also provides a laminated glass, comprising a first glass plate, an intermediate layer and a second glass plate, the first glass plate and the second glass plate are connected via the intermediate layer, and the first glass plate and / or the second glass plate are the above-mentioned coated glass.

[0041] In a final aspect, the present invention further provides a vehicle, comprising a vehicle body and the above-mentioned laminated glass, wherein the laminated glass is mounted on the vehicle body.

[0042] Compared with the prior art, the beneficial technical effects that can be achieved by the present invention include at least:

[0043] On the one hand, the present invention uses a water jet to act on the coating layer on the surface of the film removal area to achieve the purpose of film removal. On the other hand, after the coating layer is formed on the surface of the coating area and the film removal area of ​​the glass substrate, a heat bending process is performed. Since the glass substrate also has an ink printing area that at least partially surrounds the film removal area, a temperature gradient is generated between the ink printing area and the film removal area during the heat bending process, resulting in the problem of optical deformation at the junction of the ink printing area and the film removal area, as well as in the film removal area. The present invention uses an abrasive water jet method to not only remove the coating layer on the surface of the film removal area, but also to polish the glass surface corresponding to the film removal area, thereby achieving the purpose of film removal of the coated glass and improving the optical deformation problem in the film removal area of ​​the coated glass and at the junction of the film removal area and the ink printing area. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 A schematic diagram of the structure of a vehicle 100 provided in an embodiment of the present application.

[0046] Figure 2 yes Figure 1 A schematic structural diagram of the coated glass 120 in the vehicle 100 is shown.

[0047] Description of main figures:

[0048] Figure 1 middle:

[0049] 100. Vehicle; 110. Vehicle body; 120. Coated glass.

[0050] Figure 2 middle:

[0051] 11. Glass substrate; 12. Coating layer; 13. Coating area; 14. Film removal area; 15. Ink printing area; 141. Communication window area. DETAILED DESCRIPTION

[0052] It should be noted that the term "comprises" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] "Scope" disclosed in the present invention is given in the form of lower limit and upper limit. It can be one or more lower limits, and one or more upper limits respectively. A given range is defined by selecting a lower limit and an upper limit. The selected lower limit and upper limit define the boundaries of a particular range. All ranges defined in this way are combinable, i.e. any lower limit can be combined with any upper limit to form a range. For example, for a specific parameter, a range of 60-120 and 80-110 is listed, and it is understood that a range of 60-110 and 80-120 is also expected. In addition, if the minimum range values ​​listed are 1 and 2, and the maximum range values ​​listed are 3, 4 and 5, then the following ranges can all be expected: 1-3, 1-4, 1-5, 2-3, 2-4 and 2-5.

[0054] In the present invention, unless otherwise specified, the numerical range "ab" represents an abbreviation of any real number combination between a and b, where a and b are real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" have been listed in the present invention, and "0-5" is just an abbreviation of these numerical combinations.

[0055] In the present invention, unless otherwise specified, all embodiments and preferred embodiments mentioned in the present invention can be combined with each other to form a new technical solution.

[0056] In the present invention, unless otherwise specified, all technical features and preferred features mentioned in the present invention can be combined with each other to form a new technical solution.

[0057] In the present invention, unless otherwise specified, all steps mentioned herein may be performed sequentially or randomly, but are preferably performed sequentially. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, the method may further include step (c), which means that step (c) may be added to the method in any order, for example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0058] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the attached table, drawings and examples. The following described embodiments are some embodiments of the present invention, rather than all embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention. If the specific conditions are not specified in the embodiments, they are carried out according to normal conditions or the conditions recommended by the manufacturer. If the manufacturer is not specified in the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0059] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0060] Please refer to Figure 1 and Figure 2 , Figure 1 It is a schematic diagram of the structure of a vehicle 100 provided in an embodiment of the present application.

[0061] The vehicle 100 provided in the embodiment of the present application may be, but is not limited to, a car, a truck, a pickup truck, a commercial vehicle, a bus, an off-road vehicle, etc., and the present application does not impose any restrictions on this. In this embodiment, the vehicle 100 may include a body 110, a coated glass 120, and a sensor (not shown). Among them, the body 110 has the function of protecting the safety of the occupants and forming a good air environment inside the vehicle. The number of sensors may be multiple, and the sensor may be a laser radar, a camera, a rain sensor, etc.

[0062] The coated glass 120 is fixedly mounted on the vehicle body 110. For example, the coated glass 120 may be a front windshield of the vehicle 100. In some other embodiments, the coated glass 120 may also be assembled with other glass to form a laminated glass to serve as the window glass of the vehicle 100.

[0063] See also Figure 2 , Figure 2 yes Figure 1 A schematic structural diagram of the coated glass 120 in the vehicle 100 is shown.

[0064] The coated glass 120 includes a glass substrate 11 and a coating layer 12, wherein the coating layer 12 is disposed on the surface of the glass substrate 11. In the present embodiment, the glass substrate 11 includes a coating area 13, a film removal area 14 connected to the coating area 13, and an ink printing area 15, wherein the film removal area 14 includes a communication window area 141, and the ink printing area 15 is arranged around the periphery of the glass substrate 11 and at least partially surrounds the film removal area 14. The communication window area 141 is used to allow optical signals to pass through the coated glass 120 without obstruction, thereby avoiding interference of the coating layer 12 with the transmission of the optical signal. In the present embodiment, the coating layer 12 is disposed on the surface of the coating area 13. Exemplarily, there is one communication window area 141. Among them, the communication window area 141 is roughly trapezoidal, which can be used as a data transmission window for a laser radar.

[0065] The embodiment of the present application further provides a method for preparing the coated glass 120 , which is used to prepare the coated glass 120 .

[0066] S1. Provide a glass substrate, wherein the glass substrate comprises a coating area 13 and a film removal area 14 connected to the coating area 13 .

[0067] In the above step S1, step S01 is included, providing an original glass, the original glass having an ink printing area 15, and forming an ink printing layer on the surface of the ink printing area 15 to obtain a glass substrate. For example, the ink printing layer at least partially surrounds the film removal area 14. That is, the ink printing layer can partially surround the film removal area 14, and the ink printing layer can also completely surround the film removal area 14.

[0068] In this embodiment, ink printing is performed on the surface of the ink printing area 15, and the pressure of the ink printing is between 60MPa and 100MPa (including the endpoint values ​​of 60MPa and 100MPa). Exemplarily, the pressure of the ink printing is between 70MPa and 90MPa. The wet film thickness of the ink printing is between 14μm and 30μm. Exemplarily, the wet film thickness of the ink printing is between 16μm and 25μm (including the endpoint values ​​of 16μm and 25μm). Before the ink printing is performed on the surface of the ink printing area 15, the original glass needs to be cut, bent and edged.

[0069] S2, forming a coating layer 12 on the surfaces of the coating area 13 and the film removal area 14 to obtain a workpiece to be processed.

[0070] In the above step S2, step S02 is included, after forming the coating layer 12 on the surface of the coating area 13 and the film removal area 14, hot bending is performed to obtain a shaped glass. That is, the shaped glass is a workpiece to be processed. Exemplarily, the glass substrate can be hot bent by single-piece pressing. Wherein, the molding temperature is between 550°C and 700°C (including the endpoint values ​​of 550°C and 700°C). Exemplarily, the molding temperature is between 580°C and 650°C.

[0071] S3, using a water jet to remove the coating layer 12 on the surface of the coating removal area 14 of the workpiece to be processed, so as to obtain the coated glass 120.

[0072] In this embodiment, in step S3 , a water jet is used to remove the coating layer 12 on the surface of the film removal area 14 , and at the same time, the water jet is used to polish the glass surface corresponding to the film removal area 14 .

[0073] In this embodiment, abrasive is mixed in the water jet, that is, in this embodiment, an abrasive water jet is used to remove the coating layer 12 of the film removal area 14, and the glass surface corresponding to the film removal area 14 is polished. Specifically, the mass ratio of abrasive to water in the water jet is 1:5-1:30, preferably 1:5, 1:10, 1:15, 1:20, 1:25, 1:30. Specifically, the abrasive includes one or a combination of several of aluminum oxide, cerium oxide, garnet and corundum. Specifically, the particle size of the abrasive is 50-150μm, preferably 50μm, 60μm, 70μm, 80μm, 90μm, 100μm, 110μm, 120μm, 130μm, 140μm, 150μm. Specifically, the water temperature in the water jet is 20-30℃, preferably room temperature. Specifically, the distance between the water jet nozzle and the workpiece to be treated is 2-60mm, preferably 2-40mm, specifically 2mm, 6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm. Specifically, the moving speed of the water jet nozzle is 3-30mm / s, preferably 3mm / s, 5mm / s, 10mm / s, 15mm / s, 20mm / s, 25mm / s, 30mm / s. Specifically, the angle between the water jet nozzle and the workpiece to be treated is 0-8°, preferably 0.5-5°. Specifically, the shape of the water jet nozzle includes circular, elliptical or slit shape. Specifically, the air source pressure used by the water jet is greater than or equal to 0.3MPa.

[0074] In this embodiment, the treatment depth of the water jet is greater than the thickness of the coating layer 12 and is less than or equal to 100 μm. Preferably, the treatment depth of the water jet is greater than 3 times the thickness of the coating layer 12 and is less than or equal to 50 μm. The present invention adopts the abrasive water jet method to not only remove the coating layer 12 in the film removal area 14, but also polish the glass surface corresponding to the film removal area 14, thereby achieving the purpose of film removal of the coated glass 120 and improving the optical deformation problem in the film removal area 14 of the coated glass 120 and at the junction of the film removal area 14 and the ink printing area 15.

[0075] Example 1-Example 4

[0076] This series of embodiments provides four types of coated glass, and the preparation methods of these coated glasses include the following steps:

[0077] S01, providing a raw glass with a thickness of 2.1 mm and a visible light transmittance of 91%, wherein the raw glass has an ink printing area 15, and forming an ink printing layer on the surface of the ink printing area 15 to obtain a glass substrate;

[0078] S1, the glass substrate comprises a coating area 13 and a film removal area 14 connected to the coating area 13, wherein the ink printing area 15 at least partially surrounds the film removal area 14;

[0079] S2, coating the surfaces of the coating area 13 and the film removal area 14 with a triple silver heat insulation film as the coating layer 12;

[0080] S02, after forming the coating layer 12 on the surface of the coating area 13 and the film removal area 14, hot bending is performed at a temperature of 580° C. to obtain a shaped glass;

[0081] S3, using a water jet to remove the coating layer 12 on the surface of the film removal area 14 to obtain the coated glass 120.

[0082] It should be noted that the film removal area 14 in the coated glass 120 includes a communication window area 141, which is roughly trapezoidal and serves as a data transmission window for the laser radar; the shaped glass obtained in step S02 is the part to be processed.

[0083] The thickness of the coating layer 12 is shown in Table 1 below;

[0084] Wherein, abrasive is mixed in the water jet, and the abrasive used in these embodiments is cerium oxide, and the particle size of cerium oxide and the mass ratio of cerium oxide to water are shown in Table 1 below, and the temperature of the water is room temperature;

[0085] The abrasive water jet method is implemented by using a water jet gun, and the distance between the nozzle of the water jet gun and the glass, the moving speed of the nozzle of the water jet gun, and the air source pressure are also shown in Table 1 below.

[0086] Table 1

[0087]

[0088] Comparative Example 1-Comparative Example 6

[0089] This series of comparative examples provides 6 types of coated glass 120. The preparation methods of the coated glass provided in comparative examples 1 to 6 are based on Example 3, wherein: comparative examples 1 and 2 are both adjustments made to the parameters of the mass ratio of cerium oxide to water, comparative examples 3 and 4 are both adjustments made to the parameters of the cerium oxide particle size, comparative examples 5 and 6 are both adjustments made to the parameters of the distance between the nozzle and the glass substrate, and the relevant parameters of each comparative example are shown in Table 2 below.

[0090] Table 2

[0091]

[0092] Example 1-1 to Example 4-1

[0093] This series of embodiments provides four types of laminated glasses, which respectively include the coated glass obtained in Embodiments 1 to 4, a 0.76 mm thick PVB (polyvinyl butyral) interlayer, and a 2.1 mm thick ultra-white glass; the coated glass and the ultra-white glass are bonded together through the PVB interlayer. The ultra-white glass has a visible light transmittance of 91%, and is a hot-bent glass. The preparation method of these laminated glasses includes: first cleaning the coated glass, and then combining the coated glass, the interlayer, and the ultra-white glass to form a laminated glass, which is used as the window glass of the vehicle 100.

[0094] Comparative Example 1-1 to Comparative Example 6-1

[0095] This series of comparative examples provides six types of laminated glasses, which respectively include coated glass obtained in comparative examples 1 to 6, a 0.76 mm thick PVB (polyvinyl butyral) interlayer, and a 2.1 mm thick ultra-white glass; the coated glass and the ultra-white glass are bonded together through the PVB interlayer. The ultra-white glass has a visible light transmittance of 91%, and is a hot-bent glass. The preparation method of these laminated glasses includes: first cleaning the coated glass, and then combining the coated glass, the interlayer and the ultra-white glass to form a laminated glass, which is used as the window glass of the vehicle 100.

[0096] Test Example 1

[0097] This test example tests the optical properties of the laminated glasses provided by Examples 1-1 to 4-1 and Comparative Examples 1-1 to 6-1, respectively, and includes the following specific steps:

[0098] Before the test, the hot-bent coated glass used in Examples 1 to 4 and Comparative Examples 1 to 6, which was not subjected to film removal and polishing treatment, was respectively made into laminated glass according to the manufacturing methods provided in Examples 1-1 to 4-1 and Comparative Examples 1-1 to 6-1. This series of laminated glass is recorded as laminated glass. 磨料水射流前 The series of laminated glasses provided in Examples 1-1 to 4-1 and Comparative Examples 1-1 to 6-1 are recorded as laminated glasses. 磨料水射流后 ;

[0099] The laminated glass was scanned by a LABSCAN-SCREEN scanner from ISRA VISION. 磨料水射流前 and laminated glass 磨料水射流后 The horizontal diopter is measured with filter parameters 4 / 5 / 6 30 / 9 / 9 and a detection angle of 30°. The extreme diopter of the film removal area in the horizontal direction is detected to obtain D 水平极差，前 and D 水平极差，后 , where D 水平极差，前 Laminated glass 磨料水射流前 The maximum horizontal diopter minus the minimum horizontal diopter, and D 水平极差，后 Laminated glass 磨料水射流后 The maximum value of the horizontal diopter minus the minimum value. 水平极差，前 Subtract D 水平极差，后 The value of △D 水平极差。

[0100] The experimental results obtained in this test example are shown in Table 3 below.

[0101] Table 3

[0102]

[0103] It can be seen from Table 3 above that the embodiments of the present invention can improve the problem of incomplete film removal in the communication window area of ​​the coated glass and light distortion in the communication window area. Specifically, compared with the laminated glass provided in Comparative Examples 1-1 to Comparative Examples 6-1, the laminated glass provided in Examples 1-1 to 4-1 of the present invention has a ΔD 水平极差 All of them are greater than 10mdpt, indicating that the optical performance of the laminated glass obtained by the "film removal + polishing" treatment of the coated glass by the abrasive water jet method provided by the embodiment of the present invention is significantly improved, and the improvement is at least 10mdpt.

[0104] As shown in Comparative Example 1-1, the optical properties of the laminated glass obtained after the treatment with the corresponding parameters of "film removal + polishing" can be maintained, but the amount of cerium oxide used in Comparative Example 1 is too much (its mass ratio to water is 1 / 4), and the cost is too high. As shown in Comparative Example 2-1, the laminated glass obtained after the treatment with the corresponding parameters of "film removal + polishing" has insufficient effect due to the fact that the amount of cerium oxide used in Comparative Example 2 is too small (its mass ratio to water is 1 / 31), resulting in a significant decrease in optical properties by 26mdpt. As shown in Comparative Example 3-1, the laminated glass obtained after the treatment with the corresponding parameters of "film removal + polishing" has increased grinding process costs due to the fact that the particle size of cerium oxide used in Comparative Example 3 is too small, which is not conducive to industrial application. As shown in Comparative Example 4-1, the laminated glass obtained after the treatment with the corresponding parameters of "film removal + polishing" has decreased its optical properties by 35mdpt due to the fact that the particle size of cerium oxide used in Comparative Example 4 is too large, resulting in a significant decrease in optical properties. As shown in Comparative Example 5-1, the laminated glass obtained after the corresponding parameters of "film removal + polishing" treatment, although the light performance before and after does not change, but because the distance between the nozzle and the glass substrate in Comparative Example 5 is too close, combined with factors such as glass flatness and equipment table flatness, it is possible that the nozzle will directly contact the glass substrate when moving, which will cause the nozzle position / angle to change, and even cause glass cracks. As shown in Comparative Example 6-1, the laminated glass obtained after the corresponding parameters of "film removal + polishing" treatment, although the light performance is slightly reduced, but because the distance between the nozzle and the glass substrate in Comparative Example 6 is too far, it may cause the error of processing dimensional accuracy to become larger.

[0105] In summary, the embodiment of the present invention uses an abrasive water jet method to perform "film removal + polishing" processing on the coated glass surface after bending and before assembly, which can not only completely remove the coating layer in the film removal area, but also continue to polish the glass surface corresponding to the film removal area, so that the optical distortion of this area is better than before the processing.

[0106] The above is only a specific embodiment of the present invention, and cannot be used to limit the scope of the invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the protection scope of the patent of the present invention, should still fall within the scope of this patent. In addition, the technical features of the present invention can be freely combined with each other, with each other and with each other, and with each other.

Claims

1. A method for preparing coated glass, characterized in that: The preparation method comprises the following steps: S1. providing a glass substrate, wherein the glass substrate comprises a coating area and a film removal area connected to the coating area; S2, forming a coating layer on the surfaces of the coating area and the film removal area to obtain a workpiece to be processed; S3. Using a water jet to remove the coating layer on the surface of the coating removal area of ​​the workpiece to be processed to obtain coated glass.

2. The method for preparing coated glass according to claim 1, characterized in that: In step S1, the method for preparing coated glass further includes step S01: S01, providing an original glass sheet, wherein the original glass sheet has an ink printing area, and forming an ink printing layer on the surface of the ink printing area to obtain the glass substrate; In step S1 , the ink printing area at least partially surrounds the film removal area.

3. The method for preparing coated glass according to claim 2, characterized in that: In step S2, the method for preparing coated glass further includes step S02: S02, after forming the coating layer on the surfaces of the coating area and the film removal area, performing hot bending forming to obtain a formed glass; In step S02, the shaped glass is the piece to be processed.

4. The method for preparing coated glass according to any one of claims 1 to 3, characterized in that: In step S3, the coating layer on the surface of the film removal area is removed by the water jet, and at the same time, the water jet polishes the glass surface corresponding to the film removal area.

5. The method for preparing coated glass according to claim 4, characterized in that: Abrasive is mixed in the water jet.

6. The method for preparing coated glass according to claim 5, characterized in that: The mass ratio of abrasive to water in the water jet is 1:5-1:

30.

7. The method for preparing coated glass according to claim 5, characterized in that: The abrasive material includes one or a combination of aluminum oxide, cerium oxide, garnet and corundum.

8. The method for preparing coated glass according to claim 5, characterized in that: The particle size of the abrasive is 50-150 μm.

9. The method for preparing coated glass according to claim 5, characterized in that: The water temperature in the water jet is 20-30°C.

10. The method for preparing coated glass according to claim 5, characterized in that: The distance between the nozzle of the water jet and the workpiece to be processed is 2-60 mm.

11. The method for preparing coated glass according to claim 5, characterized in that: The moving speed of the water jet nozzle is 3-30 mm / s.

12. The method for preparing coated glass according to claim 5, characterized in that: The angle between the nozzle of the water jet and the workpiece to be processed is 0-8°.

13. The method for preparing coated glass according to claim 5, characterized in that: The shape of the water jet nozzle includes circular, elliptical or slit shape.

14. The method for preparing coated glass according to claim 5, characterized in that: The air source pressure used by the water jet is greater than or equal to 0.3 MPa.

15. The method for preparing coated glass according to claim 4, characterized in that: The treatment depth of the water jet is greater than the thickness of the coating layer and is less than or equal to 100 μm.

16. The method for preparing coated glass according to claim 15, characterized in that: The treatment depth of the water jet is greater than 3 times the thickness of the coating layer and is less than or equal to 50 μm.

17. The method for preparing coated glass according to claim 1, characterized in that: The coating layer is one or a combination of two or more of a heat-insulating film, a low-radiation film, an anti-reflection film, a heating film, an optical cutoff film or a decorative film.

18. A coated glass, characterized in that: The coated glass is made by the method for preparing coated glass according to any one of claims 1 to 17, the coated glass comprises a glass substrate and a coating layer, the glass substrate comprises a coating area and a film removal area connected to the coating area, and the coating layer is arranged in the coating area.

19. The coated glass according to claim 18, characterized in that: The glass substrate further includes an ink printing area, the ink printing area at least partially surrounds the film removal area, and the ink printing layer is disposed in the ink printing area.

20. The coated glass according to claim 19, characterized in that: The glass substrate is a glass plate formed by heat bending.

21. A vehicle, characterized in that: The invention comprises a vehicle body and the coated glass as claimed in any one of claims 18 to 20, wherein the coated glass is installed on the vehicle body.

22. A laminated glass, characterized in that: The laminated glass comprises a first glass plate, an intermediate layer and a second glass plate, the first glass plate and the second glass plate are connected via the intermediate layer, and the first glass plate and / or the second glass plate is the coated glass according to any one of claims 18 to 20.

23. A vehicle, characterized in that: The invention comprises a vehicle body and the laminated glass as claimed in claim 22, wherein the laminated glass is installed on the vehicle body.

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