CN114560635B - Film covering process for ultrathin flexible glass - Google Patents
Film covering process for ultrathin flexible glass Download PDFInfo
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- CN114560635B CN114560635B CN202210454981.1A CN202210454981A CN114560635B CN 114560635 B CN114560635 B CN 114560635B CN 202210454981 A CN202210454981 A CN 202210454981A CN 114560635 B CN114560635 B CN 114560635B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B33/00—Packaging articles by applying removable, e.g. strippable, coatings
- B65B33/02—Packaging small articles, e.g. spare parts for machines or engines
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/54—Glass
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/119—Deposition methods from solutions or suspensions by printing
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/30—Aspects of methods for coating glass not covered above
- C03C2218/32—After-treatment
- C03C2218/328—Partly or completely removing a coating
- C03C2218/33—Partly or completely removing a coating by etching
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/30—Aspects of methods for coating glass not covered above
- C03C2218/355—Temporary coating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses an ultrathin flexible glass film coating process, which comprises the following steps: s1, printing etching anti-corrosion ink with the thickness of 8-10 microns on the front surface of a transparent glass coated substrate, and coating an etching protective film on the back surface of the transparent glass coated substrate; and S2, hollowing out an etching groove in the rectangular hollow part on the front surface of the transparent glass film-coated substrate, wherein the size of four edges of the etching groove is increased by 0.3-0.5mm compared with the size of four edges of the ultrathin flexible glass. According to the invention, firstly, the ultra-thin flexible glass and the transparent glass coated substrate are coated with a film by a film coating machine, and then are cut and separated by a laser cutting machine, so that the problem of wrinkling of the coated film can be avoided by taking the transparent glass coated substrate as a base, and the film coating process of the ultra-thin flexible glass with the thickness of 0.03-0.05mm can be realized.
Description
Technical Field
The invention relates to the technical field of ultrathin flexible glass, in particular to a film laminating process for ultrathin flexible glass.
Background
In order to write and touch the flexible folding screen, the surface of the flexible folding screen needs to be attached with high-aluminum ultra-thin glass with the thickness of 0.03-0.05mm, the thinner the glass is, the better the attaching performance is, the ultra-thin glass has certain hardness, the light transmittance is high, the aging property is weak, when the ultra-thin glass is used on the flexible folding screen, the displayed performance advantages are that a display screen protective film cannot be compared with the ultra-thin glass, the sharpness and other advantages of chemical toughened glass are avoided when the ultra-thin glass is broken, the flexible folding screen is protected, the folding radius of the flexible screen is reduced, the flexible folding screen is not easy to delaminate, and the display is clearer.
However, the existing film covering process cannot meet the requirement of ultra-thin flexible glass film covering, and the film covering glue shaft of the film covering machine is a round shaft, and the protective film is sticky, so that the thinner the glass is, the more easily the film is wrinkled, and the edge-to-edge laser cutting cannot be realized after the film covering, so that the cutting allowance of the ultra-thin flexible glass edge film covering is too large.
Disclosure of Invention
In order to solve the technical problems mentioned in the background art, the ultra-thin flexible glass film coating process is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
the ultra-thin flexible glass film laminating process comprises the following steps:
s1, printing etching anti-corrosion ink with the thickness of 8-10 microns on the front surface of a transparent glass film-coated substrate, wherein the etching anti-corrosion ink is in a frame shape with a rectangular hollow in the middle, the size of the rectangular hollow is increased by 0.3-0.5mm compared with the size of four sides of ultrathin flexible glass, an etching protective film is coated on the back surface of the transparent glass film-coated substrate, and the thickness of the transparent glass film-coated substrate is 2mm;
s2, hollowing an etching groove in the rectangular hollow part on the front surface of the transparent glass film-coated substrate, wherein the size of the four sides of the etching groove is increased by 0.3-0.5mm compared with the size of the four sides of the ultrathin flexible glass;
s3, fixing the transparent glass coated substrate in the step S2 through a PP fixture, placing the transparent glass coated substrate into a groove body filled with glass etching liquid, and etching for 20min at a constant temperature of 28 ℃ to enable the depth of an etched groove to be consistent with the thickness of the ultrathin flexible glass, wherein the thickness of the ultrathin flexible glass is 0.03-0.05mm;
s4, taking out the transparent glass coated substrate in the step S3, and cleaning for 3 times by using a pure water high-pressure spray head to ensure that no residual glass etching solution exists on the surface of the transparent glass coated substrate;
s5, putting the transparent glass coated substrate and the PP fixture in the step S4 into a tank filled with alkali liquor, soaking for 10min at a constant temperature of 50 ℃, removing etching anti-corrosion ink, taking out, cleaning for 3 times by using a pure water high-pressure spray head after taking out, and tearing off an etching protective film;
s6, printing black laser recognition ink with the thickness of 8-10 microns on the whole back of the transparent glass film-coated substrate in the step S5, engraving a laser recognition line with the width of 0.5-0.8mm on the back of the transparent glass film-coated substrate by taking four sides of the etched groove as reference lines, and recognizing the cutting position of the transparent protective film through the laser recognition line by a laser camera of a laser cutting machine;
s7, coating a film on the surface of the ultrathin flexible glass and transparent glass coated substrate to obtain the ultrathin flexible glass and transparent glass coated substrate with the transparent protective film:
s71, placing the transparent glass coated substrate in the step S6 with the front face upward, and fixing the transparent glass coated substrate in a pneumatic three-point positioning mode;
s72, absorbing the ultrathin flexible glass by a single-axis hand mechanical sucker and placing the ultrathin flexible glass into an etching groove;
s73, allowing the ultrathin flexible glass and the transparent glass coated substrate in the step S72 to enter a film laminating machine together for film laminating, and flatly coating a transparent protective film with the thickness of 0.05mm on the front surfaces of the ultrathin flexible glass and the transparent glass coated substrate;
s8, placing the ultrathin flexible glass with the transparent protective film and the transparent glass coated substrate in the step S7 on a cutting platform of a laser cutting machine with the front faces upward;
s9, scanning and identifying a laser identification line by a laser camera of the laser cutting machine, cutting along the laser identification line, cutting off the transparent protective film, separating the ultrathin flexible glass and the transparent glass coated substrate, and forming a first transparent protective film and a second transparent protective film, wherein the first transparent protective film is covered on the transparent glass coated substrate, and the second transparent protective film is covered on the ultrathin flexible glass;
and S10, fixing the transparent glass film-coated substrate in the step S9 in a pneumatic three-point positioning mode, taking the ultrathin flexible glass out of the etched groove through a single-shaft hand mechanical sucker, and placing the ultrathin flexible glass at a specified position to complete the film coating process of the ultrathin flexible glass.
As a further description of the above technical solution:
in step S6, the process for treating the transparent glass coated substrate further includes the steps of:
s61, cleaning and drying the transparent glass coated substrate in the step S5 through a glass flat plate, and printing black laser identification ink with the thickness of 8-10 microns on the back of the transparent glass coated substrate through a screen printer;
s62, engraving a laser identification line with the width of 0.5-0.8mm on the black laser identification ink by taking four edges of the etched groove as reference lines on the back of the transparent glass coated substrate in the step S61;
and S63, placing the transparent glass coated substrate in the step S62 into a glass oven to bake for 15min, cooling, and then cleaning and drying the transparent glass coated substrate through a glass flat plate.
As a further description of the above technical solution:
in the step S1, the transparent glass coated substrate is cleaned and dried by a glass plate, and then frame-shaped etching anti-corrosion ink with the thickness of 8-10 microns and rectangular hollow parts in the middle is printed on the front surface of the transparent glass coated substrate by a screen printing machine.
As a further description of the above technical solution:
further comprising the steps of: and S11, tearing off the first transparent protective film on the front surface of the transparent glass coated substrate in the step S10 after the ultra-thin flexible glass coating is finished, and recycling the transparent glass coated substrate.
As a further description of the above technical solution:
in step S3, the glass etching solution includes 80% of water, 10% of hydrofluoric acid with a concentration of 50%, 5% of sulfuric acid with a concentration of 98%, 3% of hydrochloric acid with a concentration of 36%, and 2% of phosphoric acid with a concentration of 85%, according to the composition and the ratio.
As a further description of the above technical solution:
in step S5, according to the composition and the proportion, the alkali liquor comprises 70% of water and 30% of sodium hydroxide with the purity of 95%.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: firstly, the ultra-thin flexible glass and the transparent glass film-coated substrate are firstly subjected to film coating by a film coating machine and then are cut and separated by a laser cutting machine, the problem of film coating wrinkling cannot occur on the basis of the transparent glass film-coated substrate, edge-to-edge laser cutting can be realized, the excessive cutting allowance of the film coating at the edge of the ultra-thin flexible glass is avoided, the film coating process of the ultra-thin flexible glass with the thickness of 0.03-0.05mm can be realized, secondly, after the ultra-thin flexible glass and the transparent glass film-coated substrate are coated, the ultra-thin flexible glass and the transparent glass film-coated substrate are placed on a cutting platform of the laser cutting machine without accurate positioning, only within the stroke range of a laser camera and laser, the back of the transparent glass film-coated substrate is provided with a laser identification line with the width of 0.5-0.8mm, the ultra-thin flexible glass cannot be cut, and the advantages of high cutting speed, labor saving, high yield and the like are achieved.
Drawings
Fig. 1 is a schematic side sectional view of an ultra-thin flexible glass in step S10 of an ultra-thin flexible glass film coating process provided according to an embodiment of the present disclosure;
fig. 2 is a schematic front view illustrating a transparent glass coated substrate in step S1 of an ultra-thin flexible glass coated process provided according to an embodiment of the present invention;
fig. 3 is a schematic top view of a transparent glass coated substrate in step S1 of the ultra-thin flexible glass coated process provided according to an embodiment of the present invention;
fig. 4 is a schematic front cross-sectional view illustrating a transparent glass coated substrate in step S5 of an ultra-thin flexible glass coated process provided according to an embodiment of the present invention;
FIG. 5 is a schematic front cross-sectional view of a transparent glass coated substrate in step S6 of the ultra-thin flexible glass coated process provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic bottom view of a transparent glass coated substrate in step S6 of the ultra-thin flexible glass coated process provided according to the embodiment of the invention;
FIG. 7 is a schematic front cross-sectional view of a transparent glass coated substrate in step S7 of the ultra-thin flexible glass coated process provided in accordance with an embodiment of the present invention;
fig. 8 shows a schematic top view of a transparent glass coated substrate in step S7 of an ultra-thin flexible glass coated process provided according to an embodiment of the present invention;
FIG. 9 shows an enlarged schematic view at A of an ultra-thin flexible glass coating process provided in accordance with an embodiment of the present invention;
fig. 10 shows a schematic top view of a transparent glass coated substrate in step S9 of an ultra-thin flexible glass coated process provided according to an embodiment of the invention;
fig. 11 shows a schematic top view of the transparent glass coated substrate in step S11 of the ultra-thin flexible glass coated process provided according to the embodiment of the present invention.
Illustration of the drawings:
1. etching the anticorrosive ink; 2. a transparent glass film-coated substrate; 3. etching the protective film; 4. etching a groove; 5. identifying ink by black laser; 6. ultra-thin flexible glass; 7. a transparent protective film; 71. a first transparent protective film; 72. a second transparent protective film; 8. the laser identifies the line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-11, the present invention provides a technical solution: the ultra-thin flexible glass film laminating process comprises the following steps:
s1, as shown in figures 2 and 3, printing etching anticorrosion ink 1 with the thickness of 8-10 microns on the front surface of a transparent glass coated substrate 2, wherein the etching anticorrosion ink 1 is in a frame shape with a rectangular hollow in the middle, the size of the rectangular hollow is increased by 0.3-0.5mm compared with the size of four edges of ultrathin flexible glass 6, an etching protective film 3 is coated on the back surface of the transparent glass coated substrate 2, and the thickness of the transparent glass coated substrate 2 is 2mm, wherein the etching anticorrosion ink 1 is used for protecting the transparent glass coated substrate 2 from being corroded by glass etching liquid;
specifically, in the step S1, the transparent glass coated substrate 2 is cleaned and dried by a glass plate, and then the frame-shaped etching anti-corrosion ink 1 with a thickness of 8-10 μm and a rectangular hollow in the middle is printed on the front surface of the transparent glass coated substrate 2 by a screen printer;
s2, hollowing an etching groove 4 in the rectangular hollow part on the front surface of the transparent glass film-coated substrate 2, wherein the size of four edges of the etching groove 4 is increased by 0.3-0.5mm compared with the size of four edges of the ultrathin flexible glass 6;
s3, fixing the transparent glass coated substrate 2 in the step S2 through a PP fixture, placing the substrate into a groove body filled with glass etching liquid, and etching for 20min at a constant temperature of 28 ℃ to enable the depth of an etching groove 4 to be consistent with the thickness of the ultrathin flexible glass 6, wherein the thickness of the ultrathin flexible glass 6 is 0.03-0.05mm, and the glass etching liquid comprises 80% of water, 10% of hydrofluoric acid with the concentration of 50%, 5% of sulfuric acid with the concentration of 98%, 3% of hydrochloric acid with the concentration of 36% and 2% of phosphoric acid with the concentration of 85% according to composition and proportion;
s4, taking out the transparent glass coated substrate 2 in the step S3, and cleaning for 3 times by using a pure water high-pressure spray head to ensure that no residual glass etching solution is left on the surface of the transparent glass coated substrate 2;
s5, putting the transparent glass coated substrate 2 and the PP fixture in the step S4 into a groove filled with alkali liquor, soaking for 10min at the constant temperature of 50 ℃, removing the printing ink of the etching anticorrosion 1, taking out, cleaning for 3 times by using a pure water high-pressure spray head, and tearing off the etching protective film 3, wherein the alkali liquor comprises 70% of water and 30% of sodium hydroxide with the purity of 95% according to the composition and the proportion, so as to obtain the transparent glass coated substrate shown in the figure 4;
s6, as shown in FIGS. 5 and 6, printing black laser recognition ink 5 with the thickness of 8-10 microns on the whole back surface of the transparent glass coated substrate 2 in the step S5, engraving a laser recognition line 8 with the width of 0.5-0.8mm on the back surface of the transparent glass coated substrate 2 by taking four sides of the etched groove 4 as reference lines, and recognizing the cutting position of the transparent protective film 7 through the laser recognition line 8 by a laser camera of a laser cutting machine;
specifically, in step S6, the process for treating the transparent glass coated substrate 2 further includes the following steps:
s61, cleaning and drying the transparent glass coated substrate 2 in the step S5 through a glass flat plate, and printing black laser identification ink 5 with the thickness of 8-10 microns on the back surface of the transparent glass coated substrate 2 through a screen printer;
s62, engraving a laser identification line 8 with the width of 0.5-0.8mm on the black laser identification ink 5 by taking the four sides of the etched groove 4 as reference lines on the back surface of the transparent glass coated substrate 2 in the step S61, wherein the laser identification line 8 can be identified on the front surface of the transparent glass coated substrate 2 by a laser camera due to the fact that the transparent glass coated substrate 2 is made of transparent materials;
s63, putting the transparent glass coated substrate 2 in the step S62 into a glass oven to be baked for 15min, cooling, and then cleaning and drying the transparent glass coated substrate 2 through a glass flat plate;
s7, as shown in fig. 7 and 8, coating the surfaces of the ultrathin flexible glass 6 and the transparent glass coated substrate 2 to obtain the ultrathin flexible glass 6 and the transparent glass coated substrate 2 with the transparent protective film 7:
s71, placing the transparent glass coated substrate 2 in the step S6 with the right side facing upwards, and fixing the transparent glass coated substrate in a pneumatic three-point positioning mode;
s72, sucking the ultrathin flexible glass 6 by a single-axis hand mechanical sucker and placing the ultrathin flexible glass in the etching groove 4;
s73, the ultrathin flexible glass 6 and the transparent glass film-coated substrate 2 in the step S72 enter a film coating machine together for film coating, and the front surfaces of the ultrathin flexible glass 6 and the transparent glass film-coated substrate 2 are coated with a transparent protective film 7 with the thickness of 0.05mm in a smooth mode;
s8, placing the ultrathin flexible glass 6 with the transparent protective film 7 and the transparent glass coated substrate 2 in the step S7 on a cutting platform of a laser cutting machine with the front faces upward;
s9, as shown in figure 10, a laser camera of the laser cutting machine scans and identifies the laser identification line 8, cuts along the laser identification line 8, cuts off the transparent protective film 7, separates the ultrathin flexible glass 6 and the transparent glass coated substrate 2, and forms a first transparent protective film 71 and a second transparent protective film 72, wherein the first transparent protective film 71 covers the transparent glass coated substrate 2, and the second transparent protective film 72 covers the ultrathin flexible glass 6;
s10, fixing the transparent glass film-coated substrate 2 in the step S9 in a pneumatic three-point positioning mode, taking the ultrathin flexible glass 2 out of the etched groove 4 through a single-shaft hand mechanical sucker, and placing the ultrathin flexible glass at a specified position to complete the film coating process of the ultrathin flexible glass 6;
and S11, as shown in FIG. 11, after the film coating of the ultrathin flexible glass 6 is finished, tearing off the first transparent protective film 71 on the front surface of the transparent glass film coated substrate 2 in the step S10, wherein the front surface of the transparent glass film coated substrate 2 obtained in the step S11 is provided with an etched groove 4, and the back surface of the transparent glass film coated substrate is provided with black identification ink 5 and a laser identification line 8, so that the recycling of the transparent glass film coated substrate is realized.
Specifically, firstly, the ultra-thin flexible glass 6 and the transparent glass film-coated substrate 2 are firstly subjected to film coating by a film coating machine and then are cut and separated by a laser cutting machine, the problem of film coating wrinkling can not occur by taking the transparent glass film-coated substrate 2 as a base, edge-to-edge laser cutting can be realized, the excessive cutting allowance of the film coating at the edge of the ultra-thin flexible glass 6 is avoided, and the film coating process of the ultra-thin flexible glass 6 with the thickness of 0.03-0.05mm is realized;
secondly, after the ultrathin flexible glass 6 and the transparent glass film-coated substrate 2 are coated, the ultrathin flexible glass 6 and the transparent glass film-coated substrate are placed on a cutting platform of a laser cutting machine without accurate positioning, only within the stroke range of a laser camera and laser, the back of the transparent glass film-coated substrate 2 is provided with a laser identification line 8 with the width of 0.5-0.8mm, the ultrathin flexible glass 6 cannot be cut, and the ultrathin flexible glass cutting machine has the advantages of high cutting speed, labor saving, high yield and the like.
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 to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The ultra-thin flexible glass film laminating process is characterized by comprising the following steps of:
s1, printing etching anticorrosion ink (1) with the thickness of 8-10 microns on the front surface of a transparent glass film-coated substrate (2), wherein the etching anticorrosion ink (1) is in a frame shape with a rectangular hollow in the middle, the size of the rectangular hollow is increased by 0.3-0.5mm compared with the size of four sides of ultrathin flexible glass (6), an etching protective film (3) is coated on the back surface of the transparent glass film-coated substrate (2), and the thickness of the transparent glass film-coated substrate (2) is 2mm;
s2, hollowing an etching groove (4) in the rectangular hollow part on the front surface of the transparent glass film-coated substrate (2), wherein the size of the four sides of the etching groove (4) is increased by 0.3-0.5mm compared with the size of the four sides of the ultrathin flexible glass;
s3, fixing the transparent glass coated substrate (2) in the step S2 through a PP fixture, placing the transparent glass coated substrate into a groove body filled with glass etching liquid, and etching for 20min at a constant temperature of 28 ℃ to enable the depth of an etching groove (4) to be consistent with the thickness of the ultrathin flexible glass (6), wherein the thickness of the ultrathin flexible glass (6) is 0.03-0.05mm;
s4, taking out the transparent glass coated substrate (2) in the step S3, and cleaning for 3 times by using a pure water high-pressure spray head to ensure that no residual glass etching solution is left on the surface of the transparent glass coated substrate (2);
s5, putting the transparent glass coated substrate (2) in the step S4 and a PP fixture into a tank filled with alkali liquor, soaking for 10min at the constant temperature of 50 ℃, taking out after removing the etching anticorrosion ink (1), cleaning for 3 times by using a pure water high-pressure spray head after taking out, and tearing off the etching protection film (3);
s6, printing black laser recognition ink (5) with the thickness of 8-10 microns on the whole back surface of the transparent glass coated substrate (2) in the step S5, engraving a laser recognition line (8) with the width of 0.5-0.8mm on the back surface of the transparent glass coated substrate (2) by taking four sides of the etched groove (4) as reference lines, and recognizing the cutting position of the transparent protective film (7) through the laser recognition line (8) by a laser camera of a laser cutting machine;
s7, coating a film on the surfaces of the ultrathin flexible glass (6) and the transparent glass coated substrate (2) to obtain the ultrathin flexible glass (6) and the transparent glass coated substrate (2) with the transparent protective film (7):
s71, placing the transparent glass coated substrate (2) in the step S6 with the front face upward, and fixing the substrate in a pneumatic three-point positioning mode;
s72, sucking the ultrathin flexible glass (6) through a single-axis hand mechanical sucker and placing the ultrathin flexible glass into the etching groove (4);
s73, the ultrathin flexible glass (6) and the transparent glass film-coated substrate (2) in the step S72 enter a film coating machine together for film coating, and the front surfaces of the ultrathin flexible glass (6) and the transparent glass film-coated substrate (2) are flatly coated with a transparent protective film (7) with the thickness of 0.05mm;
s8, placing the ultrathin flexible glass (6) with the transparent protective film (7) and the transparent glass film-coated substrate (2) in the step S7 on a cutting platform of a laser cutting machine in a mode that the front faces are upward;
s9, scanning and recognizing a laser recognition line (8) by a laser camera of a laser cutting machine, cutting along the laser recognition line (8), cutting off the transparent protective film (7), separating the ultrathin flexible glass (6) and the transparent glass coated substrate (2), and forming a first transparent protective film (71) and a second transparent protective film (72), wherein the first transparent protective film (71) covers the transparent glass coated substrate (2), and the second transparent protective film (72) covers the ultrathin flexible glass (6);
s10, fixing the transparent glass film-coated substrate (2) in the step S9 in a pneumatic three-point positioning mode, taking the ultrathin flexible glass (6) out of the etching groove (4) through a single-shaft hand mechanical sucker, and placing the ultrathin flexible glass at a specified position to finish the film coating process of the ultrathin flexible glass (6).
2. The ultra-thin flexible glass coating process according to claim 1, wherein in step S6, the process of treating the transparent glass coating substrate (2) further comprises the steps of:
s61, cleaning and drying the transparent glass coated substrate (2) in the step S5 through a glass flat plate, and printing black laser identification ink (5) with the thickness of 8-10 mu m on the back surface of the transparent glass coated substrate (2) through a screen printer;
s62, engraving a laser identification line (8) with the width of 0.5-0.8mm on the black laser identification ink (5) by taking the four sides of the etched groove (4) as reference lines on the back surface of the transparent glass coated substrate (2) in the step S61;
and S63, putting the transparent glass coated substrate (2) in the step S62 into a glass oven to be baked for 15min, cooling, and then cleaning and drying the transparent glass coated substrate (2) through a glass flat plate.
3. The ultra-thin flexible glass film coating process according to claim 1, wherein in step S1, the transparent glass film coated substrate (2) is cleaned and dried by a glass plate, and then a frame-shaped etching anti-corrosion ink (1) with a thickness of 8-10 μm and a rectangular hollow in the middle is printed on the front surface of the transparent glass film coated substrate (2) by a screen printing machine.
4. The ultra-thin flexible glass coating process according to claim 1, further comprising the steps of: s11, after the film covering of the ultrathin flexible glass (6) is finished, tearing off the transparent protective film I (71) on the front surface of the transparent glass film covered substrate (2) in the step S10, and recycling the transparent glass film covered substrate (2).
5. The process of claim 1, wherein in step S3, the glass etchant comprises 80% water, 10% hydrofluoric acid with a concentration of 50%, 5% sulfuric acid with a concentration of 98%, 3% hydrochloric acid with a concentration of 36%, and 2% phosphoric acid with a concentration of 85%, according to the composition and the ratio.
6. The process of claim 1, wherein in step S5, the alkali solution comprises 70% water and 30% sodium hydroxide with a purity of 95% according to the composition and ratio.
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