A method for testing haze of an anti-glare film

Abstract

This invention discloses a haze testing method for anti-glare films, relating to the field of film testing technology, for detecting the internal and external haze of anti-glare films. The method uses a film layer testing structure comprising an anti-glare film layer and an auxiliary testing layer that can be directly adhered to the anti-glare film layer. The anti-glare film layer has an uneven anti-glare surface formed by anti-glare particles; the auxiliary testing layer has a flexible adhesive surface that can be directly adhered to the anti-glare surface, and is light-transmitting. The testing method provided by this invention simplifies the measurement steps and saves measurement time by selecting an auxiliary testing layer that can be directly adhered to the anti-glare film layer and whose refractive index matches it, thus forming a film layer testing structure for testing. Simultaneously, by controlling parameters such as the adhesion angle between the auxiliary testing layer and the anti-glare film layer, the adhesion quality can be effectively controlled, avoiding defects such as air bubbles on the adhesion surface.

Description

Technical Field

[0001] This invention relates to the field of membrane testing technology, and in particular to a haze testing method for an anti-glare membrane. Background Technology

[0002] With the rapid advancement of science, anti-glare films (AG films) are widely used in various electronic devices and automobiles to solve the glare effect caused by the inability of light to diffuse. Glare not only affects our visual perception but can also pose serious safety hazards. Anti-glare films consist of three main components: light-scattering particles, adhesive resin, and a substrate. They are made by coating a substrate with a solution of light-scattering particles and adhesive resin. After the solvent evaporates, the coating surface becomes rough and uneven due to the light-scattering particles, thus achieving the anti-glare effect.

[0003] For anti-glare films, the haze caused by its surface roughness is called external haze. Conversely, internal haze is caused by the difference in refractive index between particles and resin. Internal and external haze constitute the total haze of the anti-glare film. When either internal or external haze increases, the light scattering effect is enhanced, and the glare effect is suppressed. However, while internal haze helps reduce "glare" emitted from within, the image display becomes washed out, and the perceived black level decreases with increasing internal haze. Therefore, depending on different scenarios and usage requirements, the design of internal and external haze in anti-glare films is important for display technology, making the detection of internal and external haze crucial.

[0004] Chinese patent publication number CN111045119B discloses a surface treatment film and its polarizer. By controlling the ratio of internal haze to total haze, the surface treatment film exhibits excellent anti-glare and anti-flashpoint functions, making it particularly suitable for high-precision LCD panel surfaces. It employs a coating instrument such as a wire rod to coat a transparent layer onto the surface of an AG film. A new coating solution needs to be prepared by mixing organic solvents and acrylic monomers or oligomers. A suitable wire rod is then selected to control the coating thickness, followed by oven drying and UV curing to smooth out the uneven particles on the AG film surface. Internal haze testing is then performed in this manner. The above-mentioned internal haze testing operation is cumbersome and time-consuming, making it unsuitable for mass production. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a haze testing method for anti-glare films, which simplifies the measurement steps, saves measurement time, and ensures measurement accuracy.

[0006] To achieve the above objectives, the present invention provides a haze testing method for an anti-glare film, used to detect the internal and external haze of the anti-glare film. The method uses a film layer testing structure, which includes an anti-glare film layer and an auxiliary testing layer.

[0007] The anti-glare film layer has an uneven anti-glare surface formed by anti-glare particles;

[0008] The auxiliary test layer has a flexible adhesive surface that can be directly attached to the anti-glare surface, and light can pass through it;

[0009] The testing method includes the following steps:

[0010] 1) Measure the total haze of the anti-glare film: Cut the anti-glare film to the size required for the test, then place it in a haze meter to measure the total haze of the anti-glare film, denoted as Haze. 总 ;

[0011] 2) Adhesive test layer: The auxiliary test layer is tilted with the flexible adhesive surface facing the anti-glare surface of the anti-glare film. Then, the bottom of the tilted surface is pressed onto the anti-glare surface with a bonding roller and a constant pressure is maintained to push the bonding roller forward. At the same time, the unbonded area of ​​the auxiliary test layer is pulled back to the opposite side of the direction of the bonding roller until the auxiliary test layer is completely bonded to the anti-glare surface, thus obtaining the film test structure for testing.

[0012] 3) Measuring the internal haze of the anti-glare film: Cut the above-mentioned film test structure to the size that meets the test requirements, and then place it in a haze meter to measure the internal haze of the anti-glare film, which is denoted as Haze. 内 ;

[0013] 4) Obtain the external haze of the anti-glare film: Subtract the internal haze of the anti-glare film from the total haze of the anti-glare film to obtain the external haze of the anti-glare film, i.e., Haze. 外 =Haze 总 -Haze 内 ;

[0014] In step 2), the angle between the plane containing the unattached area of ​​the auxiliary test layer and the plane containing the unattached area of ​​the anti-glare film layer is 105° to 135°.

[0015] In one or more embodiments, the refractive index of the anti-glare particles in the anti-glare film layer is denoted as N1, the refractive index of the auxiliary test layer is denoted as N2, and |N1-N2|≤0.01.

[0016] In one or more embodiments, the pressure of the bonding roller in step 2) is 50-100N, and the pushing speed is 0.02-0.03m / s.

[0017] In one or more embodiments, the thickness of the auxiliary test layer is 1.5 to 3.5 times the particle size of the anti-glare particles in the anti-glare film layer.

[0018] In one or more embodiments, the auxiliary test layer is an OCA film layer.

[0019] In one or more embodiments, release films are provided on both sides of the OCA adhesive film layer when it is not bonded, wherein:

[0020] In step 2), before the OCA adhesive film layer is laminated, the release film on one side needs to be removed to create a flexible adhesive surface;

[0021] When measuring the internal haze of the anti-glare film layer in step 3), the release film on the other side of the OCA adhesive film layer also needs to be removed.

[0022] In one or more embodiments, the tension force applied to the unbonded area of ​​the auxiliary test layer in step 2) pulling it backward toward the opposite side of the bonding roller's forward direction is 40 to 90 N.

[0023] In one or more embodiments, before measuring the total haze of the anti-glare film layer in step 1), the anti-glare surface of the anti-glare film layer needs to be cleaned with a cleaning solution, wherein the cleaning solution is anhydrous ethanol.

[0024] In one or more embodiments, the angle between the plane on which the bonding roller is advancing in step 2) is located and the plane on which the anti-glare film layer has been bonded is 40° to 50°.

[0025] In one or more embodiments, the method uses a bonding device, the upper end of which is provided with a spraying mechanism, an auxiliary test layer mounting mechanism and a bonding mechanism, the bonding mechanism being located between the spraying mechanism and the auxiliary test layer mounting mechanism.

[0026] Compared with the prior art, the haze testing method for anti-glare film disclosed in this invention has the following beneficial effects:

[0027] 1. The present invention simplifies the measurement steps and saves the measurement cycle by using an auxiliary test layer, especially an OCA adhesive film, that can be directly attached to the anti-glare film surface.

[0028] 2. When bonding the light-transmitting auxiliary test layer, the present invention ensures a tight bond without air bubbles when the auxiliary test layer is bonded to the uneven anti-glare surface of the anti-glare film by reasonably controlling the bonding pressure of the bonding roller, the bonding angle, and the angle between the plane where the unbonded area of ​​the auxiliary test layer is located and the plane where the unbonded area of ​​the anti-glare film is located. This guarantees the accuracy of the internal and external haze measurements. Attached Figure Description

[0029] Figure 1 This is a flowchart of a haze testing method for an anti-glare film according to an embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of a membrane structure according to an embodiment of the present invention. Figure 1 .

[0031] Figure 3 This is a schematic diagram of the bonding angle of the anti-glare film according to an embodiment of the present invention.

[0032] Figure 4 This is a schematic diagram of a membrane structure according to an embodiment of the present invention. Figure 2 .

[0033] Figure 5 This is a schematic diagram of a membrane structure according to an embodiment of the present invention. Figure 3 .

[0034] Figure 6 This is a schematic diagram of the bonding device according to an embodiment of the present invention.

[0035] Figure 7 yes Figure 6 Schematic diagram of the structure at point A in the middle.

[0036] Figure 8 This is a half-sectional view of a bonding device according to an embodiment of the present invention.

[0037] Figure 9 This is a rear view of a bonding device according to an embodiment of the present invention.

[0038] Figure 10 This is a diagram showing the usage state of the bonding device according to an embodiment of the present invention.

[0039] Explanation of key figure labels:

[0040] 1-Anti-glare film layer, 2-Auxiliary test layer, 3-Laying roller, 4-Mounting base, 401-Conveying device, 402-Inlet pipe, 403-Storage chamber, 5-First connecting part, 6-Second connecting part, 601-First locking block, 602-Second locking block, 7-Connecting rod, 8-Drive motor, 9-Pump, 10-Fixing rod, 1001-Fixing block, 11-Connecting pipe, 12-Sealing cover, 13-Fixing part, 1301-Slide groove, 14-First bolt, 15-Spray head, 16-Shock damping block, 17-Drying part, 18-Limiting block, 19-Second bolt, 20-Auxiliary test layer mounting mechanism, 2001-Fixing column, 20011-Slide groove, 2002-Rubber roller, 2003-Protruding column, 2004-Third bolt. Detailed Implementation

[0041] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0042] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0043] like Figures 1 to 7 As shown, a haze testing method for an anti-glare film according to an embodiment of the present invention is used to detect the internal and external haze of the anti-glare film. The method uses a film layer testing structure, which includes an anti-glare film layer 1 and an auxiliary testing layer 2. The anti-glare film layer 1 has an uneven anti-glare surface formed by anti-glare particles. The auxiliary testing layer 2 has a flexible adhesive surface that can be directly attached to the anti-glare surface and is light-transmitting.

[0044] In a preferred embodiment of this invention, the anti-glare film layer 1 includes a substrate layer, a resin layer, and anti-glare particles. The anti-glare particles are dispersed in the resin layer, and an uneven anti-glare surface is formed on the side of the resin layer away from the substrate layer. The refractive index of the anti-glare particles in the anti-glare film layer is denoted as N1, and the refractive index of the auxiliary test layer is denoted as N2. |N1-N2|≤0.01, that is, the refractive index of the auxiliary test layer 2 must match the refractive index of the anti-glare particles.

[0045] Specifically, the testing method provided by this invention includes the following steps:

[0046] 1) Measure the total haze of anti-glare film layer 1: Cut anti-glare film layer 1 to the size that meets the test requirements, then place it in a haze meter to measure the total haze of anti-glare film layer 1, which is denoted as Haze. 总 ;

[0047] 2) Adhere the auxiliary test layer 2: The auxiliary test layer 2 is tilted as a whole with the flexible adhesive surface facing the anti-glare surface of the anti-glare film layer 1. Then, the bottom of the tilted surface is pressed onto the anti-glare surface with the bonding roller 3 and the bonding roller 3 is pushed forward with constant pressure. At the same time, the unbonded area of ​​the auxiliary test layer 2 is pulled backward toward the opposite side of the direction of the bonding roller until the auxiliary test layer is completely bonded to the anti-glare surface, thus obtaining the film layer test structure for testing.

[0048] 3) Measure the internal haze of anti-glare film layer 1: Cut the above film layer test structure to the size that meets the test requirements, and then place it in a haze meter to measure the internal haze of anti-glare film layer 1, which is denoted as Haze. 内 ;

[0049] 4) Obtain the external haze of the anti-glare film layer 1: Subtract the internal haze of the anti-glare film layer 1 from the total haze of the anti-glare film layer 1 to obtain the external haze of the anti-glare film layer 1, that is, Haze 外 = Haze 总 - Haze 内 ;

[0050] Among them, the included angle between the plane where the unbonded area of the auxiliary test layer 2 is located and the plane where the unbonded area of the anti-glare film layer 1 is located in step 2) is 110° - 130°.

[0051] As a preferred implementation mode, the auxiliary test layer 2 is an OCA adhesive film layer, and light release films and heavy release films are respectively attached to both sides of the OCA adhesive film layer when it is not bonded.

[0052] Refer Figure 1 As shown, when measuring the total haze of the anti-glare film layer 1 in step 1), before cutting the anti-glare film layer 1 into a size suitable for testing, it is first necessary to gently wipe the anti-glare surface of the anti-glare film layer 1 with a cleaning cloth dipped in a little cleaning liquid to remove the dust on the anti-glare surface and avoid the dust affecting the accuracy of measuring the haze.

[0053] Among them, the cleaning liquid can specifically be one or a combination of anhydrous ethanol, ethylene glycol, and hydrogen peroxide, as long as the dust and stains on the anti-glare surface of the anti-glare film layer 1 can be removed by the cleaning liquid.

[0054] Among them, the cleaning liquid should be a volatile liquid, the cleaning liquid should not corrode the anti-glare film layer 1, and the cleaning liquid should be non-toxic and soluble in many organic substances. That is, the cleaning agent will not cause harm to people during use, and at the same time, it also needs to have a good cleaning and decontamination effect.

[0055] The cleaning cloth is a dust-free cloth or a non-woven fabric. The cleaning cloth will not damage the anti-glare surface of the anti-glare film layer 1 during the process of wiping the anti-glare film layer 1, and the cleaning cloth should have good water absorption to adsorb the cleaning liquid through the cleaning cloth and accelerate the evaporation rate of the cleaning liquid.

[0056] After the anti-glare surface of the anti-glare film layer 1 is cleaned, it is necessary to cut the anti-glare film layer 1 into a suitable size so that the cut anti-glare film layer 1 can adapt to the detection specifications required by the haze meter, such as: the cutting specification is 6 cm * 6 cm. Record the measured value as the total haze, and use Haze 总 to represent.

[0057] In step 2, select an auxiliary test layer 2 with a refractive index match. As can be seen from the above, it is sandwiched between the light release film and the heavy release film. In addition, the thickness of the auxiliary test layer 2 is set to be 1.5 - 3.5 times the particle size of the anti-glare particles in the anti-glare film layer 1 to prevent the auxiliary test layer 2 from being too thin to fill the uneven anti-glare surface of the anti-glare film layer 1.

[0058] Preferably, the thickness of the auxiliary test layer 2 is 2 to 3 times the particle size of the anti-glare particles in the anti-glare film layer 1. At this time, the error tolerance of the auxiliary test layer 2 when filling the anti-glare film layer 1 is the smallest, which can largely avoid the situation that the auxiliary test layer 2 is too thin to fill the uneven surface of the anti-glare film layer 1.

[0059] Peel off the release film of the auxiliary test layer 2, then use one adhesive side of the auxiliary test layer 2 to adhere to the anti-glare surface of the anti-glare film layer 1. Using the bonding roller 3 at an angle to the anti-glare film layer 1, press the auxiliary test layer 2 and the anti-glare film layer 1 together, ensuring complete adhesion without gaps or air bubbles. Apply a backward pull of 40-90N to the portion of the auxiliary test layer 2 not adhered to the anti-glare film layer 1, ensuring the auxiliary test layer 2 is tightly pressed against the bonding roller 3. The angle between the auxiliary test layer 2 and the anti-glare film layer 1 should remain at an angle. Then, using the bonding roller 3, maintain the original angle and apply 50-100N of pressure to push the auxiliary test layer 2 forward.

[0060] Preferably, the pulling force when the auxiliary test layer 2 is not attached to the anti-glare film layer 1 is 40-90N, so that the auxiliary test layer 2 is not completely attached to the anti-glare film layer 1 due to the pulling force being too small or too large.

[0061] Among them, participants Figure 3 As shown, the angle between the plane containing the unbonded area of ​​the auxiliary test layer 2 and the plane containing the unbonded area of ​​the anti-glare film layer 1 is denoted as R1. The angle between the plane where the bonding roller 3 is advancing and the plane containing the bonded area of ​​the anti-glare film layer 1 is denoted as R2. To reduce the occurrence of air bubbles and other defects on the bonding surface caused by the film material making premature contact before the bonding roller 3 arrives during bonding, the angle range of R1 is set to 105°~135°, and the angle range of R2 is set to 40°~50°. More preferably, the angle range of R1 is 110°~130°, and the angle of R2 is 45°.

[0062] In a preferred embodiment, the preferred angle of R1 is 120°, and the angle between the unbonded area of ​​the auxiliary test layer 2 and the unbonded area of ​​the anti-glare film layer 1 remains an obtuse angle. This ensures that the adhesive surface of the auxiliary test layer 2 will not prematurely contact the anti-glare film layer 1 due to its own gravity or electrostatic adsorption force, greatly reducing the probability of air bubbles appearing during bonding.

[0063] In step 3), after smoothing the film, peel off the two release films of the auxiliary test layer. Finally, place the laminated film into a haze meter for measurement. The measured value is the internal haze, recorded as Haze. 内 According to Haze 总 =Haze 内 +Haze 外 Haze 外is the external haze, currently Haze 总 and Haze 内 It is known that Haze 外 = Haze 总 ~Haze 内 , and the haze can be calculated accordingly.

[0064] As shown in the figure Figures 6-10 The present invention also provides a laminating device. A spraying mechanism, an auxiliary test layer mounting mechanism 20, and a laminating mechanism are provided at the upper end of the laminating device. The laminating mechanism is located between the spraying mechanism and the auxiliary test layer mounting mechanism.

[0065] Among them, the spraying mechanism is used to spray a cleaning liquid onto the anti-glare film layer 1. The spraying mechanism can evenly spray the cleaning liquid onto the anti-glare film layer 1, facilitating the cleaning of the surface to which the anti-glare film layer 1 is laminated.

[0066] Among them, the auxiliary test layer mounting mechanism 20 is used to mount the auxiliary test layer 2. The auxiliary test layer 2 is mounted on the auxiliary test layer mounting mechanism 20. Through the auxiliary test layer mounting mechanism 20, the included angle formed by the un-laminated area between the auxiliary test layer 2 and the anti-glare film layer 1 can be adjusted.

[0067] Among them, the laminating mechanism is used to laminate the auxiliary test layer 2 and the anti-glare film layer 1. Through the laminating mechanism, the force used in the lamination process of the auxiliary test layer 2 and the anti-glare film layer 1 can be controlled.

[0068] As shown in the figure Figures 6-10 The laminating mechanism includes a laminating roller 3. The laminating roller 3 is used to press the anti-glare film layer 1 and the auxiliary test layer 2, and can discharge the bubbles between the anti-glare film layer 1 and the auxiliary test layer 2.

[0069] Specifically, the laminating roller 3 is rotatably connected to the mounting seat 4. A first connecting portion 5 and a second connecting portion 6 are fixedly connected to the upper end of the mounting seat 4. The laminating roller 3 is located between the first connecting portion 5 and the second connecting portion 6. There is a certain gap between the laminating roller 3 and the mounting seat 4. The anti-glare film layer 1 and the auxiliary test layer 2 pass through the gap between the laminating roller 3 and the mounting seat 4, and the laminating roller 3 can extrude the anti-glare film layer 1 and the auxiliary test layer 2.

[0070] Specifically, as shown in the figure Figures 6-10 The inside of the laminating roller 3 is provided with a connecting rod 7. The middle part of the connecting rod 7 is of a special shape. The laminating roller 3 is sleeved on the connecting rod 7. When the connecting rod 7 rotates, it can带动 the laminating roller 3 to rotate. The laminating roller 3 is used to press the anti-glare film layer 1 and the auxiliary test layer 2, and can also dust the dust on the surface in contact with the laminating roller 3. By sleeving the laminating roller 3 on the connecting rod 7, it is convenient to replace the laminating roller 3.

[0071] As shown in the figure Figure 5As shown, a driving motor 8 is provided on one side of the connecting rod 7. The connecting rod 7 and the driving motor 8 are lapped, and when the driving motor 8 drives, it can move the connecting rod 7.

[0072] Furthermore, referring Figure 9 As shown, the second connecting portion 6 includes a first clamping block 601 and a second clamping block 602. The first clamping block 601 and the second clamping block 602 are rotatably connected. When the first clamping block 601 and the second clamping block 602 are disengaged, the connecting rod 7 can be taken out. When taking out the connecting rod 7, the laminating roller 3 is removed at the same time, and then the laminating roller 3 is removed from the connecting rod 7, which is convenient for replacing the laminating roller 3.

[0073] Referring Figure 9 As shown, a limiting block 18 is fixedly connected to the second clamping block 602. One end of the limiting block 18 contacts the first clamping block 601. A first threaded hole is provided in the limiting block 18, and a second threaded hole is provided in the first clamping block 601. A second bolt 19 is sequentially threadedly connected in the first threaded hole and the second threaded hole, that is, the first clamping block 601 and the second clamping block 602 are fixed by a bolt fixing method. It is convenient to separate the first clamping block 601 and the second clamping block 602 and at the same time it is convenient to fix the first clamping block 601 and the second clamping block 602, and it has a certain stability.

[0074] The pressure of the laminating roller 3 on the anti-glare film layer 1 and the auxiliary test layer 2 is controlled at 50-100 N.

[0075] Preferably, the laminating roller 3 can be adjusted up and down. By adjusting the laminating roller 3 up and down, the pressure of the laminating roller 3 on the anti-glare film layer 1 and the auxiliary test layer 2 can be increased or decreased, thereby effectively avoiding the situation of air bubbles between the anti-glare film layer 1 and the auxiliary test layer 2.

[0076] Referring Figure 6 As shown, the auxiliary test layer mounting mechanism 20 can adjust the angle of the non-laminated area between the anti-glare film layer 1 and the auxiliary test layer 2.

[0077] Specifically, referring Figures 6-7 As shown, the auxiliary test layer mounting mechanism 20 includes a pair of fixed columns 2001. A chute 20011 is provided in the fixed column 2001. A pair of rubber rollers 2002 are installed between the pair of fixed columns 2001. The rubber rollers 2002 are rotatably connected between the pair of fixed columns 2001. The auxiliary test layer 2 is sandwiched between the pair of rubber rollers 2002 for fixing the auxiliary test layer 2.

[0078] The rubber roller 2002 is rotationally connected with a convex column 2003 that matches the chute 20011. The convex column 2003 is inserted into the chute 20011. A third bolt 2004 is threadedly connected to the convex column 2003. By tightening the third bolt 2004, the rubber roller 2002 can be fixed. By loosening the third bolt 2004, the position of the rubber roller 2002 and the distance between a pair of rubber rollers 2002 can be adjusted, which is used to clamp the auxiliary test layer 2 with different thicknesses.

[0079] Refer Figures 6-10 As shown, the spraying mechanism includes a nozzle 15. The mounting seat 4 is provided with a storage cavity 403, and the storage cavity 403 is filled with cleaning liquid. A connecting pipe 11 is provided between the nozzle 15 and the mounting seat 4. Through the connecting pipe 11, the cleaning liquid can be ejected from the nozzle 15.

[0080] Specifically, the cleaning liquid can be sprayed onto the surface of the anti-glare film layer 1 that needs to be bonded. The cleaning liquid can clean the surface of the anti-glare film layer 1 that needs to be bonded. A detachable drying part 17 is also provided on the second connecting part 6. The drying part 17 is located between the second connecting part 6 and the spraying mechanism.

[0081] 1]Refer Figure 8 As shown, the drying part 17 is installed at the lower end of the second connecting part 6. Preferably, the position of the drying part 17 can also be finely adjusted up and down, which is convenient for adapting to anti-glare film layers 1 with different thicknesses and for drying the surfaces of anti-glare film layers 1 with different thicknesses.

[0082] The anti-glare film layer 1 can move on the mounting seat 4. During the moving process, the upper surface of the anti-glare film layer 1 comes into contact with the drying part 17. The drying part 17 can specifically be a dust-free cloth. The drying part 17 can wipe the upper surface of the anti-glare film layer 1, accelerate the volatilization of the cleaning liquid on the upper surface of the anti-glare film layer 1, and at the same time can also clean the upper surface of the anti-glare film layer 1.

[0083] Refer Figures 6-10 As shown, a conveying device 401 is also provided on the mounting seat 4. Specifically, the conveying device is a belt conveyor. The conveying device 401 can make the anti-glare film layer 1 move on the mounting seat 4. During the moving process of the anti-glare film layer 1, the upper surface of the anti-glare film layer 1 can be sprayed through the nozzle 15.

[0084] Preferably, a plurality of through holes for leaking liquid can also be provided on the conveying device.

[0085] Among them, refer Figure 6As shown, a pump 9 is connected to the connecting pipe 11. Through the pump 9, the cleaning liquid in the mounting base 4 can be pumped out, so that the cleaning liquid can be ejected from the nozzle 15. The amount of cleaning liquid ejected from the nozzle 15 is small. Through the nozzle 15, the cleaning liquid contacts the upper surface of the anti-glare film layer 1 in the form of water mist, and the cleaning liquid is more likely to volatilize. While volatilizing, it can also clean the surface of the anti-glare film layer 1.

[0086] Specifically, as shown Figure 6 As shown, a fixing part 13 is installed on the mounting base 4. A pair of third threaded holes are provided on the fixing part 13, and fourth threaded holes matching the third threaded holes are provided on the mounting base 4. A first bolt 14 is threadedly connected in the third threaded hole and the fourth threaded hole. [[ID=⑦]]

[0087] As shown Figure 6 As shown, a chute 1301 matching the nozzle 15 is provided on the fixing part 13. The nozzle 15 is slidably connected to the fixing part 13. A fixing rod 10 is fixedly connected to the upper end of the nozzle 15. The nozzle 15 is slidably connected in the chute 1301 through the fixing rod 10.

[0088] As shown Figure 6 As shown, a fixing block 1001 is fixedly connected to the fixing rod 10. The fixing block 1001 can specifically be a rubber block. Through the fixing block 1001, an interference fit can be achieved between the fixing part 13 and the fixing rod 10. That is, there is a certain damping between the fixing rod 10 and the fixing part 13. When the fixing rod 10 slides to a certain position, the fixing rod 10 is not easy to slide easily.

[0089] By adjusting the position of the nozzle 15 through the fixing rod 10, the spraying position of the nozzle 15 can be made different, which is convenient for the nozzle 15 to spray anti-glare film layers 1 of different specifications.

[0090] As shown Figure 6 As shown, a liquid inlet pipe 402 is provided on the mounting base 4. The liquid inlet pipe 402 is communicated with the inside of the storage cavity 403. Through the liquid inlet pipe 402, the cleaning liquid can be filled into the storage cavity 403. A sealing cover 12 is also provided on the liquid inlet pipe 402. When the filling of the liquid is completed, the liquid inlet pipe 402 can be closed through the sealing cover 12, avoiding the situation that dust and other impurities enter the inside of the storage cavity 403 through the liquid inlet pipe 402.

[0091] When using the laminating device, first place the anti-glare film layer 1 on the conveying device 401, with the surface to be laminated of the anti-glare film 1 facing up. Through the conveying device 401, the anti-glare film layer 1 is conveyed. During the process of the conveying device 401 conveying the anti-glare film layer 1, the nozzle 15 can spray the upper surface of the anti-glare film layer 1, ejecting the cleaning liquid in the form of mist.

[0092] When the anti-glare film layer 1 passes through the drying part 17, the drying part 17 wipes the surface of the anti-glare film layer 1 that needs to be adhered, and then installs the auxiliary test layer 2 on the auxiliary test layer installation mechanism 20. Then, the auxiliary test layer 2 located between the auxiliary test layer installation mechanism 20 and the adhering mechanism is adhered to the anti-glare film layer 1, and then the anti-glare film layer 1 and the auxiliary test layer 2 are pushed to the lower end of the adhering roller 3. The adhering roller 3 can extrude the anti-glare film layer 1 and the auxiliary test layer 2, so that the anti-glare film layer 1 and the auxiliary test layer 2 are adhered, and the adhering roller 3 can avoid the situation of air bubbles between the anti-glare film layer 1 and the auxiliary test layer 2.

[0093] Among them, by adjusting the position of the rubber roller 2002, the angle of the unadhered part between the auxiliary test layer 2 and the anti-glare film layer 1 can be changed. The angle between the auxiliary test layer 2 and the anti-glare film layer 1 is an obtuse angle. Generally, the angle between the auxiliary test layer 2 and the anti-glare film layer 1 is between 105° and 135°, that is, the included angle formed by the auxiliary test layer installation mechanism 20 and the adhering mechanism can be 105° to 135°.

[0094] Specifically, the drying part 17 is a non-woven fabric or a dust-free cloth for wiping the surface of the anti-glare film layer 1.

[0095] After the anti-glare film layer 1 and the auxiliary test layer 2 are adhered, the anti-glare film layer 1 and the auxiliary test layer 2 are cut by a cutting device so that the cut anti-glare film layer 1 and auxiliary test layer 2 can match the haze meter.

[0096] See Figure 6 As shown, a plurality of shock-absorbing blocks 16 are further provided at the lower end of the mounting base 4. Through the shock-absorbing blocks 16, it is convenient to enhance the friction between the mounting base 4 and the ground, so that the mounting base 4 is not easily displaced during use.

[0097] When the adhering roller 3 needs to be replaced after being used for a period of time, first remove the second bolt 19, then rotate the first block 601 upward, and then remove the connecting rod 7. When the connecting rod 7 is removed, the adhering roller 3 can be removed together. After the connecting rod 7 and the adhering roller 3 are removed, then remove the adhering roller 3. After removal, replace the adhering roller 3 and then install the connecting rod 7 and the adhering roller 3.

[0098] The foregoing description of the specific exemplary embodiments of the present invention is for the purposes of illustration and exemplification. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is obvious that many changes and variations are possible in light of the above teaching. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the invention and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the invention, as well as various different selections and changes. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A method for testing the haze of an anti-glare film, used to detect the internal and external haze of the anti-glare film, characterized in that, The method uses a membrane testing structure, which includes an anti-glare membrane and an auxiliary testing layer. The anti-glare film layer has an uneven anti-glare surface formed by anti-glare particles; The auxiliary test layer has a flexible adhesive surface that can be directly attached to the anti-glare surface, and light can pass through it; The testing method includes the following steps: 1) Measure the total haze of the anti-glare film: Cut the anti-glare film to the size required for the test, then place it in a haze meter to measure the total haze of the anti-glare film, denoted as Haze. 总 ; 2) Adhesive test layer: The auxiliary test layer is tilted with the flexible adhesive surface facing the anti-glare surface of the anti-glare film. Then, the bottom of the tilted surface is pressed onto the anti-glare surface with a bonding roller and a constant pressure is maintained to push the bonding roller forward. At the same time, the unbonded area of ​​the auxiliary test layer is pulled back to the opposite side of the direction of the bonding roller until the auxiliary test layer is completely bonded to the anti-glare surface, thus obtaining the film test structure for testing. 3) Measuring the internal haze of the anti-glare film: Cut the above-mentioned film test structure to the size that meets the test requirements, and then place it in a haze meter to measure the internal haze of the anti-glare film, which is denoted as Haze. 内 ; 4) Obtain the external haze of the anti-glare film: Subtract the internal haze of the anti-glare film from the total haze of the anti-glare film to obtain the external haze of the anti-glare film, i.e., Haze. 外 =Haze 总 -Haze 内 ; In step 2), the angle between the plane containing the unattached area of ​​the auxiliary test layer and the plane containing the unattached area of ​​the anti-glare film layer is 105° to 135°.

2. The haze testing method for the anti-glare film according to claim 1, characterized in that, The refractive index of the anti-glare particles in the anti-glare film layer is denoted as N1, and the refractive index of the auxiliary test layer is denoted as N2, where |N1-N2|≤0.

01.

3. The haze testing method for the anti-glare film according to claim 1, characterized in that, In step 2), the pressure of the bonding roller is 50-100N, and the pushing speed is 0.02-0.03m / s.

4. The haze testing method for the anti-glare film according to claim 1, characterized in that, The thickness of the auxiliary test layer is 1.5 to 3.5 times the particle size of the anti-glare particles in the anti-glare film layer.

5. The haze testing method for the anti-glare film according to claim 1, characterized in that, The auxiliary test layer is an OCA adhesive film layer.

6. The haze testing method for the anti-glare film according to claim 5, characterized in that, When the OCA adhesive film layer is not bonded, release films are provided on both sides, wherein: In step 2), before the OCA adhesive film layer is laminated, the release film on one side needs to be removed to create a flexible adhesive surface; When measuring the internal haze of the anti-glare film layer in step 3), the release film on the other side of the OCA adhesive film layer also needs to be removed.

7. The haze testing method for the anti-glare film according to claim 1, characterized in that, In step 2), the tension applied to the unbonded area of ​​the auxiliary test layer in the opposite direction of the bonding roller's forward movement is 40–90 N.

8. The haze testing method for the anti-glare film according to claim 1, characterized in that, Before measuring the total haze of the anti-glare film layer in step 1), the anti-glare surface of the anti-glare film layer needs to be cleaned with a cleaning solution, which is anhydrous ethanol.

9. The haze testing method for the anti-glare film as described in claim 1, characterized in that, The angle between the plane on which the bonding roller is pushed forward in step 2) and the plane on which the anti-glare film layer has been bonded is 40° to 50°.

10. The haze testing method for an anti-glare film as described in claim 1, characterized in that, The method uses a bonding device, the upper end of which is provided with a spraying mechanism, an auxiliary test layer installation mechanism and a bonding mechanism, the bonding mechanism being located between the spraying mechanism and the auxiliary test layer installation mechanism.

Images