High-performance Anti-fog film and manufacturing method thereof

Abstract

This invention relates to a high-performance anti-fog film and its preparation process. The raw material TAC is unwound and sequentially subjected to the following steps: corona treatment, saponification pre-stretching treatment, saponification deep stretching treatment, washing treatment, and drying treatment, followed by winding. The saponification pre-stretching treatment is performed in a first saponification tank, and the saponification deep stretching treatment is performed in a second saponification tank. Both the first and second saponification tanks are filled with saponification liquid. A pair of pressure rollers are provided at the inlet, outlet, and outlet positions of the first and second saponification tanks. One roller in each pair is controlled by air pressure from a cylinder, while the other roller is a drive roller whose speed is controlled by a servo motor. This effectively extends the anti-fog effect of the film, thereby expanding its application range.

Description

[Technical Field]

[0001] This invention relates to the field of optical materials, and in particular to a high-performance anti-fog film and its preparation process. [Previous Technology]

[0002] Lens fogging mainly occurs when water vapor in the air encounters the cool surface of the lens. The water vapor cools rapidly and condenses into tiny water droplets, which then adhere to the lens surface. Light passing through these water droplets undergoes irregular diffuse reflection and refraction, resulting in blurred vision. Common anti-fog technologies on the market include electrothermal anti-fog and coating anti-fog. Electrothermal anti-fog has good anti-fog effect, but its application range is limited, and it is costly, energy-intensive, and environmentally unfriendly. Coating anti-fog has low anti-fog performance and short anti-fog duration.

[0003] To address the problems existing in electrothermal anti-fogging and coating anti-fogging, a new type of anti-fogging film has emerged on the market, which is produced through a saponification process. For example, Chinese invention patent CN105572772A, published on May 11, 2016, discloses an anti-fogging polarized lens and its preparation method, specifically disclosing the preparation process of the anti-fogging film layer: a cellulose diacetate film is saponified with an alkaline solution, washed three times with water, and dried to obtain the anti-fogging film layer. The anti-fogging performance of the anti-fogging film obtained by the existing saponification preparation process is effectively improved, but its anti-fogging time is short, generally less than 120 seconds, and therefore cannot be widely used. [Summary of the Invention]

[0004] Therefore, in order to solve the above problems and extend the anti-fog effect of the anti-fog film, a high-performance anti-fog film preparation process is proposed, which involves unwinding a raw material TAC and then sequentially performing the following steps:

[0005] The process includes a corona treatment, a saponification pre-stretching treatment, a saponification deep-stretching treatment, a washing treatment, and a drying treatment, followed by winding. The saponification pre-stretching treatment is performed in a first saponification tank, and the saponification deep-stretching treatment is performed in a second saponification tank. Both the first and second saponification tanks are filled with saponification liquid, which is a NaOH solution. The concentration of the NaOH solution in the first saponification tank is lower than that in the second saponification tank. A pair of pressure rollers are provided at a first inlet position, a first outlet position, and a second outlet position of the second saponification tank. One of the pressure rollers is controlled by a cylinder, and the other is a drive roller whose rotation speed is controlled by a servo motor. The traction speed of the servo motors at the first inlet position, the first outlet position, and the second outlet position increases sequentially.

[0006] Further, the saponification liquid in the first saponification tank is configured as follows: 30% to 50% NaOH, 50% to 70% deionized water, and the liquid temperature is set between 40°C and 75°C; the saponification liquid in the second saponification tank is configured as follows: 30% to 65% NaOH, 35% to 70% deionized water, and the liquid temperature is set between 50°C and 85°C.

[0007] Further, an ultrasonic cleaner is installed on the first saponification tank and the second saponification tank so that the ultrasonic wave path is aligned with the membrane surface; the ultrasonic wave frequency emitted by the ultrasonic cleaner is set between 20KHz and 80KHz; during the saponification pre-stretching treatment and the saponification deep stretching treatment, low-frequency ultrasonic waves are used to treat the TAC membrane.

[0008] Further, the corona treatment process is carried out using a corona treatment machine. The parameters set for the corona treatment machine are: processing width of 0.6m ± 0.02m, output frequency of 15kHz to 25kHz, electrode gap of 1mm to 1.5mm, and corona treatment power of 3kW to 4kW.

[0009] Further, the drying process is replaced by a repair process, which uses the temperature control of a repair chamber to activate the molecules between the TAC membrane structures; by reducing the traction force of the treated membrane, the tensile internal stress of the treated TAC mold is gradually recovered and reduced, and the repair reduces the extension in a conveying direction; at the same time, a repair roller is used to increase the extension of the treated TAC membrane in a transverse direction, which is perpendicular to the conveying direction, so that the material membrane becomes larger and shrinks less in the transverse direction; finally, a steel roller is used to smooth and shape the membrane surface.

[0010] Further, the repair process is implemented through a repair box. The repair box has a pair of pressure rollers at both its inlet and outlet positions. One roller in each pair is controlled by a pneumatic cylinder, while the other roller is a drive roller controlled by a servo motor. The traction speed of the servo motor at the inlet position is less than that at the outlet position. The repair box's settings are as follows: the temperature of the first section of the repair box is set between 30°C and 130°C for drying; the temperature of the second section of the repair box is set between 30°C and 130°C for repair. The third section of the repair box is set to a temperature between 30°C and 130°C for repair purposes; the fourth section of the repair box is set to a temperature between 30°C and 130°C for repair purposes; the fifth section of the repair box is set to a temperature between 30°C and 130°C for shaping purposes; and the sixth section of the repair box is set to a temperature between 30°C and 130°C for shaping purposes. In the first to fourth sections of the repair box, the repair rollers are used for repair during the TAC film conveying process. In the fifth and sixth sections of the repair box, steel rollers are used for shaping during the TAC film conveying process.

[0011] Further, the repair roller has an arc radius between 700 mm and 2500 mm.

[0012] Furthermore, in the process of preparing and producing the antifog film, the traction speed of the TAC film is set between 2.0 m / min and 3.5 m / min.

[0013] Further, the water washing process is as follows: the TAC membrane after saponification and deep stretching treatment is washed three times, neutralized once, and washed three times in sequence to complete the water washing process and enter the next process.

[0014] A high-performance anti-fog film, manufactured using the high-performance anti-fog film preparation process described above.

[0015] The following effects can be achieved based on the above technical features:

[0016] 1. Pre-stretching and deep stretching treatments are performed during the saponification process, and the gaps between material molecules in the conveying direction are opened by stretching, making it easier for the saponification liquid to penetrate into the material, breaking the chemical bonds inside the TAC membrane material, and forming more hydrophilic groups inside the TAC membrane material, thereby achieving higher anti-fogging performance.

[0017] 2. By repairing the TAC membrane, the curling deformation that occurred during the saponification process was effectively repaired. Specifically, the temperature control of the repair chamber was used to activate the molecules between the TAC membrane structures; by reducing the traction force of the treated membrane, the tensile internal stress of the treated material was gradually recovered and reduced, thus repairing and reducing the extension in the conveying direction; at the same time, the repair roller was used to increase the lateral extension of the treated material, making the material membrane wider in the lateral direction and reducing shrinkage; finally, a steel roller was used to smooth and shape the membrane surface.

[0018] 3. Utilizing the stronger penetrating power and lower cavitation noise of low-frequency ultrasound, the saponification liquid is penetrated into the material, breaking the chemical bonds inside the TAC membrane material, causing more hydrophilic groups to form inside the TAC membrane material, thereby achieving higher anti-fogging performance.

Implementation Method

[0019] Based on the above technical features, the main effects of the high-performance anti-fog film and its preparation process of the present invention will be clearly presented in the following embodiments.

[0020] Please refer to the first figure. The present invention discloses a preparation process of a high-performance anti-fog film, which involves unwinding the raw material TAC film and then sequentially performing the following steps: corona treatment, saponification pre-stretching treatment, saponification deep stretching treatment, water washing treatment and repair treatment, and finally winding it up.

[0021] In this embodiment, during the preparation and production of the anti-fog film, the traction speed of the TAC film is 2.0m / min-3.5m / min.

[0022] Please refer to Figure 2. The corona treatment process is carried out using a corona treatment machine 1. When a high-frequency, high-voltage electric current is applied to the treatment electrode in the corona treatment machine 1, the electrode interacts with gas molecules in the air, generating corona discharge. During the discharge process, the gas molecules in the air are ionized, forming ions and electrons, generating low-temperature plasma. The chemical bonds on the surface of the TAC film are broken by the bombardment of the low-temperature plasma, generating free radicals and polar groups, which roughens the TAC film surface and enhances its surface activity. The surface tension of the TAC film can reach 25mN / m-30mN / m.

[0023] In this embodiment, the parameters of the corona treatment machine 1 are set as follows: the treatment width is 0.6m±0.02m, the output frequency is 15KHZ-25KHZ, the electrode gap is 1mm-1.5mm, and the corona treatment power is 3kW-4kW.

[0024] Please refer to Figures 3 and 4. The saponification pre-stretching treatment is carried out in the first saponification tank 2, and the saponification deep stretching treatment is carried out in the second saponification tank 3. Both the first saponification tank 2 and the second saponification tank 3 are filled with saponification liquid, which is a NaOH solution, and the NaOH concentration in the first saponification tank 2 is lower than that in the second saponification tank 3. A pair of pressure rollers are provided at the first inlet position A, the first outlet position B (the inlet position of the second saponification tank 3), and the second outlet position C of the second saponification tank 3. One of the pressure rollers in each pair is controlled by air pressure from a cylinder, and the other pressure roller is a drive roller whose speed is controlled by a servo motor. When the speeds of the servo motors at the first inlet position A, the first outlet position B, and the second outlet position C are different, that is, the traction speeds of the servo motors at the first inlet position A, the first outlet position B, and the second outlet position C increase sequentially, different tensions are generated between them, thereby stretching the TAC membrane. The traction range of the servo motor can be set from 1% to 100%, and the specific output is subject to the production values ​​after experimental testing.

[0025] The TAC membrane after corona treatment enters the first saponification tank 2 through the pressure roller at the first entry position A for saponification pre-stretching treatment, then enters the second saponification tank 3 through the pressure roller at the first exit position B for saponification deep stretching treatment, and finally enters the next process through the pressure roller at the second exit position C.

[0026] The saponification solution in the first saponification tank 2 is prepared as follows: NaOH 30%-50%, deionized water 50%-70%, and the liquid temperature is 40℃-75℃. The saponification solution in the second saponification tank 3 is prepared as follows: NaOH 30%-65%, deionized water 35%-70%, and the liquid temperature is 50℃-85℃.

[0027] Stretching during the saponification process can open up the gaps between material molecules in the transport direction, making it easier for the saponification liquid to penetrate into the material, breaking the chemical bonds inside the TAC membrane material, and forming more hydrophilic groups inside the TAC membrane material, thereby achieving higher anti-fogging performance.

[0028] During the saponification pre-stretching and saponification deep-stretching processes, low-frequency ultrasonic waves are used to treat the TAC membrane. Specifically, ultrasonic vibrators 4 are installed at both ends of the first saponification tank 2 and the second saponification tank 3, so that the ultrasonic wave path is directly aligned with the membrane surface. The ultrasonic frequency emitted by the ultrasonic vibrator 4 is set to 20KHz-80KHz, and more preferably 25KHz low-frequency ultrasonic waves.

[0029] This invention utilizes the characteristics of low-frequency ultrasound, such as stronger penetration and less cavitation noise. The saponification liquid penetrates the interior of the material, breaking the chemical bonds within the TAC membrane material, causing the formation of more hydrophilic groups within the TAC membrane material, thereby achieving higher anti-fogging performance.

[0030] The water washing process in this embodiment is as follows: the TAC membrane after saponification and deep stretching treatment is sequentially subjected to three water washes, one neutralization, and three more water washes to complete the water washing process before proceeding to the next process. The water washing and neutralization are the same as in the prior art and will not be described in detail here. In this embodiment, carbon-filtered pure water is used for water washing, and 0.5% acid is used for neutralization.

[0031] Because the TAC material is subjected to deep stretching treatment through saponification, the molecular structure is destroyed, which further leads to certain changes in the length and width directions of the material. The unwinding direction of the material is stretched and elongated, while the width direction is contracted, resulting in a certain degree of curling.

[0032] As shown in Figures 5 to 12, in order to repair the deformation of the material, the present invention performs a repair process: the temperature control of the repair box 5 is used to activate the molecules between the TAC membrane structures; by reducing the traction force of the treated membrane, the tensile internal stress of the treated material is gradually recovered and reduced, thus repairing and reducing the extension in the conveying direction; at the same time, the repair roller 51 is used to increase the extension of the treated material in the transverse direction, making the material membrane wider in the transverse direction and reducing shrinkage; finally, the steel roller 52 is used to flatten and shape the membrane surface, wherein the transverse direction is perpendicular to the conveying direction.

[0033] In this embodiment, the repair process includes six repairs, which are specifically implemented through the repair box 5. The inlet position D and the outlet position E of the repair box 5 are each equipped with a pair of pressure rollers. One of the pressure rollers in each pair is controlled by the air pressure of the cylinder, and the other pressure roller is the driving wheel, and its speed is controlled by the servo motor. The traction speed of the servo motor at the inlet position D is less than the traction speed of the servo motor at the outlet position E.

[0034] The parameters of repair box 5 are as follows:

[0035] The temperature of the first section of the repair box 5 is set between 30°C and 130°C for drying; the temperature of the second section of the repair box 5 is set between 30°C and 130°C for repair; the temperature of the third section of the repair box 5 is set between 30°C and 130°C for repair; the temperature of the fourth section of the repair box 5 is set between 30°C and 130°C for repair; the temperature of the fifth section of the repair box 5 is set between 30°C and 130°C for shaping; and the temperature of the sixth section of the repair box 5 is set between 30°C and 130°C for shaping. The traction rate of the servo motor at the box entry position D is set to 12.5%, and the traction rate of the servo motor at the box exit position E is set to 11.2%.

[0036] In the first to fourth sections of the repair box 5 described above, the TAC membrane is repaired using a repair roller 51 during the conveying process. As shown in Figure 12, the radius R of the repair roller 51 is an arc of 700 mm to 2500 mm. To prevent wrinkles and other quality problems from forming on the membrane, the repair roller 51 in the first to fourth sections of the repair box 5 must be used in conjunction with a steel roller 52.

[0037] In the fifth and sixth sections of the above-mentioned repair box 5, steel rollers (cylindrical) are used for shaping during the TAC membrane transfer process.

[0038] To better illustrate the technical effects achieved by the present invention, several embodiments will be listed below for description.

[0039] After the raw material TAC film is unwound, it is subjected to corona treatment, saponification pre-stretching treatment, saponification deep stretching treatment, water washing treatment and repair treatment in sequence.

[0040] The parameters for the corona treatment are: the output frequency of the corona treatment machine 1 is 20KHZ, the electrode gap is 1mm, and the corona treatment power is 3kW.

[0041] The parameter conditions for the saponification pre-stretching treatment and the saponification deep-stretching treatment are as follows:

[0042] The saponification solution in the first saponification tank 2 is specifically configured as follows: NaOH 30%, deionized water 70%, liquid temperature 45℃, and soaking time 85 seconds ± 0.5 seconds; the saponification solution in the second saponification tank 3 is specifically configured as follows: NaOH 45%, deionized water 55%, liquid temperature 65℃, and soaking time 210 seconds ± 0.5 seconds.

[0043] Please refer to Figures 3 and 4. At the first entry position A, the traction rate input of the servo motor is 10%, and the pressure roller pressure is 0.45 MPa. At the first exit position B, the traction rate input of the servo motor is 10.5%, and the pressure roller pressure is 0.55 MPa. After the TAC membrane is corroded and softened by the saponification liquid in the first saponification tank 2, the material will be stretched due to the different output rates; and its stretching ratio is about 100.3% ± 0.2%. At the second exit position C, the traction rate input of the servo motor is 12.5%, and the pressure roller pressure is 0.55 MPa. After the TAC membrane is corroded and softened by the saponification liquid in the saponification tank, the material will be stretched due to the different output rates; and its stretching ratio is about 101.7% ± 3%.

[0044] Please refer to Figures 5 through 12 again. The parameter conditions for the repair process are as follows:

[0045] Parameters of repair box 5: Temperature of the first section of repair box: 75℃; Temperature of the second section of repair box: 85℃; Temperature of the third section of repair box: 85℃; Temperature of the fourth section of repair box: 80℃; Temperature of the fifth section of repair box: 70℃; Temperature of the sixth section of repair box: 65℃.

[0046] The radius R of the repaired curved roller 51 is 1775.42 mm, the distance between the highest points of the arc is 100 mm, and the distance between the lowest points of the arc is 40 mm.

[0047] The traction rate of the servo motor at the box entry position D is set to 12.5%, and the traction rate of the servo motor at the box exit position E is set to 11.2%. Table 1 Example 1 Example 2 Example 3 Example 4 Untreated raw material TAC membrane The anti-fog film is obtained after corona treatment and saponification pre-stretching, followed by washing and drying. The anti-fog film is obtained after corona treatment, saponification pre-stretching, saponification deep stretching, washing and drying. The anti-fog film is obtained through corona treatment, saponification pre-stretching treatment, saponification deep stretching treatment, water washing treatment, and repair treatment. Table 2 Anti-fog performance parameters of Example 1 Length 1m Width 545mm Thickness 200μm Surface tension 36-40N / m Water-fogging performance (Anti-fog) <3S Luminous Transmittance (Tv) 92%±1 Hue (Illuminant D65) L*:97.81 a*:0.00 b*:0.25 Haze 0.05 Table 3 Anti-fog performance parameters of Example 2 Length 1.001-1.005m Width 544 mm ± 1 mm Thickness 198μm±1μm Surface tension 20-25 N / m Water-fogging performance (Anti-fog) 60±15S Luminous Transmittance (Tv) 91.61% Hue (Illuminant D65) L*:97.48 a*:0.05 b*:0.28 Haze 0.05-0.1 Table 4 Anti-fog performance parameters of Example 3 Length 1.014-1.02m Width 533mm ± 3mm Thickness 178μm±2μm Surface tension 12-15 N / m Water-fogging performance (Anti-fog) 600±15S Luminous Transmittance (Tv) 89.71%±0.5% Hue (Illuminant D65) L*:96.87 a*:0.12 b*:0.33 Haze 0.2-0.5 Table 5 Anti-fog performance parameters of Example 4 Length 1.008-1.012m Width 540mm-542mm Thickness 185μm-192μm Surface tension 12-17 N / m Water-fogging performance (Anti-fog) 600±15S Luminous Transmittance (Tv) 90.45% Hue (Illuminant D65) L*:97.11 a*:0.11 b*:0.31 Haze 0.15-0.5

[0048] By comparing the anti-fogging data in Tables 2 to 5 and combining them with Figures 13 to 16, it can be seen that the anti-fogging time of the TAC film after saponification pre-stretching and saponification deep stretching treatment of the present invention reaches 600 seconds. Compared with the existing 120 seconds, the anti-fogging time of the anti-fogging film prepared by the process of the present invention is effectively extended, thereby expanding the application range of the anti-fogging film.

[0049] The anti-fog film prepared by the above method can be applied to different products, such as substrate films, glass, plastic substrate boards and lenses.

[0050] Please refer to Figure 17. The anti-fog film prepared by the method of the present invention is applied to a substrate film to form an anti-fog substrate film 60. The anti-fog substrate film 60 has the following embodiments. In the following embodiments, the TAC anti-fog film 61 is prepared using the above-described high-performance anti-fog film preparation process. The TAC anti-fog film 61 has two sides. One side having anti-fog properties is called a single-sided TAC anti-fog film, and both sides having anti-fog properties are called a double-sided TAC anti-fog film. The TAC anti-fog film 61 in the following embodiments can be either a single-sided TAC anti-fog film or a double-sided TAC anti-fog film.

[0051] Please refer to Figure 17. An anti-fog substrate film 60 includes a PE protective film 62, a TAC anti-fog film 61, and another PE protective film 62 stacked sequentially. When the TAC anti-fog film 61 is a single-sided TAC anti-fog film, the anti-fog substrate film 60 is a single-layer transparent anti-fog substrate film. When the TAC anti-fog film 61 is a double-sided TAC anti-fog film, the anti-fog substrate film 60 is a double-sided transparent anti-fog substrate film.

[0052] Please refer to Figure 18. An anti-fog substrate film 60 includes a PE protective film 62, a TAC anti-fog film 61, at least one transparent film 65, and the PE protective film 62 stacked sequentially. The outer side of the transparent film 65 near the PE protective film 62 (the side facing the PE protective film 62) may be provided with a hardened coating, an anti-oil coating, or other coatings. This anti-fog substrate film 60 is an anti-fog transparent substrate film.

[0053] Please refer to Figure 19. An anti-fog substrate film 60 includes a PE protective film 62, a TAC anti-fog film 61, a color film 63, and the PE protective film 62 stacked sequentially. The color film 63 is an untreated layer (an untreated layer means it has not undergone functional surface treatment such as hardening or oil resistance), but it may also have a hardened coating, an oil-resistant coating, or other coatings. Alternatively, the color film 63 may be a functional color film, such as a high-contrast film, an anti-blue light film, a night vision film, or a non-transparent colored film, or it may be a color-changing film. This anti-fog substrate film 60 is an anti-fog colored substrate film.

[0054] Please refer to Figure 20. An anti-fog substrate film 60 includes a PE protective film 62, a TAC anti-fog film 61, a polarizing film 64, and the PE protective film 62 stacked sequentially. The anti-fog substrate film 60 is an anti-fog polarizing substrate film.

[0055] Please refer to Figure 21. An anti-fog substrate film 60 includes a PE protective film 62, a TAC anti-fog film 61, a color film 63, a polarizing film 64, and the PE protective film 62 stacked sequentially. The anti-fog substrate film 60 is an anti-fog color-changing polarizing substrate film.

[0056] Please refer to Figure 22. An anti-fog substrate film 60 includes a protective film, a TAC anti-fog film 61, a color film 63, a color-changing film 67, a polarizing film 64, a transparent film 65, and a PE protective film 62, which are stacked sequentially. This anti-fog substrate film is an anti-fog, color-changing, color-changing, polarizing substrate film. The color-changing film 67 can display seven visible colors from the spectrum: red, orange, yellow, green, blue, indigo, and violet.

[0057] Please refer to Figure 23. An anti-fog substrate film 60 includes a PE protective film 62, a UV-free transparent film 66, a color film 63, a polarizing film 64, a TAC anti-fog film 61, and the PE protective film 62 stacked sequentially. The UV-free transparent film 66, the color film 63, and the polarizing film 64 are one or more combinations of TAC, PC, PA, PMMA, etc. This anti-fog substrate film 60 is an anti-fog color-changing polarizing substrate film.

[0058] The polarizing film 64 in the above embodiments can be a single layer of PVA or a multilayer structure. When the polarizing film 64 is a multilayer structure, the PVA layer or TAC layer of the polarizing film 64 is close to the TAC protective film 61. The polarizing film 64 includes a PVA layer and a transparent TAC layer stacked sequentially; or, the polarizing film 64 includes a transparent TAC layer, a PVA layer, and a transparent TAC layer stacked sequentially; or, the polarizing film 64 includes a PVA layer and a colored TAC layer stacked sequentially; or, the polarizing film 64 includes a colored TAC layer, a PVA layer, and a colored TAC layer stacked sequentially. Depending on the required thickness, the transparent layer and the colored layer can be a single layer or a multilayer structure, or they can be UV-protective films.

[0059] An anti-fog substrate film 60 is applied to glass to form anti-fog glass, which has the following embodiments:

[0060] Please refer to Figure 24. An anti-fog glass includes an anti-fog substrate film 60, an optical adhesive 80, and a glass 70 stacked sequentially.

[0061] Please refer to Figure 25. An anti-fog glass includes an anti-fog substrate film 60, an optical adhesive 80, a glass 70, an optical adhesive 80, and an anti-fog substrate film 60 stacked in sequence.

[0062] Optical adhesive 80 is one or more of polyvinyl alcohol water adhesive, hydrophobic OCA adhesive, hot melt adhesive, UV adhesive, etc.

[0063] Please refer to Figure 26. An anti-fog substrate film 60 is applied to a plastic substrate 90 to form an anti-fog plastic substrate. The anti-fog plastic substrate has the following embodiments:

[0064] An anti-fog plastic substrate includes an anti-fog substrate film 60, an optical adhesive 80 and a plastic substrate 90 stacked sequentially.

[0065] Please refer to Figure 27. An anti-fog plastic substrate includes an anti-fog substrate film 60, an optical adhesive 80, a plastic substrate 90, an optical adhesive 80, and an anti-fog substrate film 60 stacked in sequence.

[0066] The plastic substrate 90 is made of one or more of the following materials: TAC, PC, PA, PMMA, etc.

[0067] The anti-fog film prepared by the method of the present invention is applied to lenses to form anti-fog lenses. The processing technology is as follows: Step 1: Cut the above-mentioned anti-fog plastic substrate into semi-finished lenses of the required size; Step 2: Bend or heat the cut semi-finished lenses at high temperature to form the required lens spherical surface; Step 3: Place the processed lens spherical surface into an injection mold of the same spherical surface and inject the main substrate plastic; Step 4: After the mold is opened and left to stand, the anti-fog lens is obtained.

[0068] Alternatively, the processing technology of the anti-fog lens is as follows: Step 1: Apply or paste optical adhesive 80 to one side of the anti-fog substrate film 60, and attach a PE protective film to one side of the optical adhesive 80; Step 2: Bending the anti-fog substrate film 60 with optical adhesive 80 to the required lens spherical surface at a certain temperature, and the adhesive side is concave or convex as required; Step 3: Place the convex or concave side of the lens substrate on a hot press mold, peel off the PE protective film with the adhesive side of the anti-fog substrate film 60 (concave or convex) and align it with the convex side of the lens substrate, and press the two substrates together to obtain the anti-fog substrate.

[0069] Based on the above description of the embodiments, the operation, use and effects of the present invention can be fully understood. However, the above embodiments are only preferred embodiments of the present invention and should not be used to limit the scope of the present invention. Simple equivalent changes and modifications made in accordance with the scope of the patent application and the description of the invention are all within the scope of the present invention. [Simplified Explanation of the Diagram]

[0070] [Figure 1] is a flowchart of the preparation process of the present invention.

[0071] [Figure 2] is a schematic diagram of the corona process of the present invention.

[0072] [Figure 3] is a schematic diagram of the saponification pre-stretching process of the present invention.

[0073] [Figure 4] is a schematic diagram of the saponification deep stretching process of the present invention.

[0074] [Figure 5] is a schematic diagram of the repair process of the present invention.

[0075] [Figure 6] is the first process flow chart of the repair box of the present invention.

[0076] [Figure 7] is the second section of the repair process flowchart of the repair box of the present invention.

[0077] [Figure 8] is the repair process flowchart of the third section of the repair box of the present invention.

[0078] [Figure 9] is the fourth section of the repair process flowchart of the repair box of the present invention.

[0079] [Figure 10] is the fifth section of the repair process flowchart of the repair box of the present invention.

[0080] [Figure 11] is the repair process flowchart of the sixth section of the repair box of the present invention.

[0081] [Figure 12] is a schematic diagram of the repaired curved roller of the present invention.

[0082] [Figure 13] is a test curve of the waterproof and fog-proof performance of raw materials.

[0083] [Figure 14] is a test curve of the waterproof fog performance of the pre-stretched anti-fog film of the present invention.

[0084] [Figure 15] is a test curve of the anti-fog performance of the anti-fog film before repair according to the present invention.

[0085] [Figure 16] is a test curve of the waterproof fog performance of the repaired anti-fog film of the present invention.

[0086] [Figure 17] shows one embodiment of using the anti-fog substrate film of the present invention.

[0087] [Figure 18] shows Embodiment 2 using the anti-fog substrate film of the present invention.

[0088] [Figure 19] shows Embodiment 3 using the anti-fog substrate film of the present invention.

[0089] [Figure 20] shows the fourth embodiment of using the anti-fog substrate film of the present invention.

[0090] [Figure 21] shows the fifth embodiment of using the anti-fog substrate film of the present invention.

[0091] [Figure 22] shows the sixth embodiment of using the anti-fog substrate film of the present invention.

[0092] [Figure 23] shows the seventh embodiment of using the anti-fog substrate film of the present invention.

[0093] [Figure 24] shows one embodiment of the anti-fog glass of the present invention.

[0094] [Figure 25] shows the second embodiment of using the anti-fog glass of the present invention.

[0095] [Figure 26] shows one embodiment of using the anti-fog plastic substrate of the present invention.

[0096] [Figure 27] shows Embodiment 2 using the anti-fog plastic substrate of the present invention.

Claims

1. A process for preparing a high-performance anti-fog film, comprising unwinding a raw material TAC and sequentially performing the following steps: corona treatment, saponification pre-stretching treatment, saponification deep stretching treatment, water washing treatment, and drying treatment, followed by winding; the saponification pre-stretching treatment is performed in a first saponification tank, and the saponification deep stretching treatment is performed in a second saponification tank; both the first and second saponification tanks are filled with saponification liquid, which is a NaOH solution, and the concentration of the NaOH solution in the first saponification tank is lower than that in the second saponification tank; a pair of pressure rollers are provided at a first inlet position, a first outlet position, and a second outlet position of the first saponification tank, one of the pressure rollers being controlled by a cylinder pressure, and the other pressure roller being a drive roller whose rotational speed is controlled by a servo motor; the traction speed of the servo motor at the first inlet position, the first outlet position, and the second outlet position increases sequentially.

2. The preparation process of the high-performance anti-fog film as described in claim 1, wherein, The saponification solution in the first saponification tank is configured as follows: 30% to 50% NaOH, 50% to 70% deionized water, and the liquid temperature is set between 40°C and 75°C; the saponification solution in the second saponification tank is configured as follows: 30% to 65% NaOH, 35% to 70% deionized water, and the liquid temperature is set between 50°C and 85°C.

3. The preparation process of the high-performance anti-fog film as described in claim 1, wherein, An ultrasonic cleaner is installed on the first and second saponification tanks, so that the ultrasonic wave path is aligned with the membrane surface; the ultrasonic frequency emitted by the ultrasonic cleaner is set between 20KHz and 80KHz; during the saponification pre-stretching treatment and the saponification deep stretching treatment, low-frequency ultrasonic waves are used to treat the TAC membrane.

4. The manufacturing process of the high-performance anti-fog film as described in claim 1, wherein, The corona treatment process is carried out using a corona treatment machine. The parameters set for the corona treatment machine are: treatment width of 0.6m ± 0.02m, output frequency of 15kHz to 25kHz, electrode gap of 1mm to 1.5mm, and corona treatment power of 3kW to 4kW.

5. The preparation process of the high-performance anti-fog film as described in claim 1, wherein, During the preparation and production of antifog film, the traction speed of TAC film is set between 2.0 m / min and 3.5 m / min.

6. The manufacturing process of the high-performance anti-fog film as described in claim 1, wherein, The water washing process is as follows: the TAC membrane after saponification and deep stretching treatment is washed three times, neutralized once, and washed three times in sequence to complete the water washing process before entering the next process.

7. A process for preparing a high-performance anti-fog film, comprising unwinding a raw material TAC and sequentially performing the following steps: corona treatment, saponification pre-stretching treatment, saponification deep stretching treatment, water washing treatment, and repair treatment, followed by winding; the saponification pre-stretching treatment is performed in a first saponification tank, and the saponification deep stretching treatment is performed in a second saponification tank; both the first and second saponification tanks are filled with saponification liquid, which is a NaOH solution, and the concentration of the NaOH solution in the first saponification tank is lower than that in the second saponification tank; a pair of pressure rollers are provided at a first inlet position, a first outlet position, and a second outlet position of the first saponification tank, wherein one of the pressure rollers... One pressure roller is controlled by air pressure from a cylinder, while the other pressure roller is a drive roller whose rotation speed is controlled by a servo motor. The traction speed of the servo motor at the first entry position, the first exit position, and the second exit position increases sequentially. The repair process utilizes the temperature control of a repair chamber to activate the molecules between the TAC membrane structures. By reducing the traction force of the treated membrane, the tensile internal stress of the treated TAC mold gradually recovers and decreases, thus reducing the extension in the conveying direction. Simultaneously, a repair roller is used to increase the extension of the treated TAC membrane in a transverse direction, which is perpendicular to the conveying direction, making the material membrane larger and reducing shrinkage in the transverse direction. Finally, a steel roller is used to smooth and shape the membrane surface.

8. The manufacturing process of the high-performance anti-fog film as described in claim 7, wherein, The repair process is implemented through the repair box. Each of the repair box's entry and exit positions is equipped with a pair of pressure rollers. One roller in each pair is controlled by pneumatic cylinder pressure, while the other is a drive roller whose rotational speed is controlled by a servo motor. The servo motor traction speed at the entry position is less than that at the exit position. The repair box's settings are as follows: the first section of the repair box is set to a temperature between 30°C and 130°C for drying; the second section of the repair box is set to a temperature between 30°C and 130°C for repair; and the third section of the repair box... The temperature settings of the first to fourth sections of the repair box are between 30°C and 130°C for repair purposes; the temperature settings of the fifth and sixth sections of the repair box are between 30°C and 130°C for shaping purposes; the repair rollers are used for repair during the TAC film conveying process in the first to fourth sections of the repair box; and the steel rollers are used for shaping during the TAC film conveying process in the fifth and sixth sections of the repair box.

9. The manufacturing process of the high-performance anti-fog film as described in claim 7, wherein, The repair roller has an arc radius between 700 mm and 2500 mm.

10. A high-performance anti-fog film, manufactured using the preparation process of a high-performance anti-fog film as described in any one of claims 1 to 6.