Forming die for anti-dazzle coating of polaroid
By using spin coating or transfer printing technology with molding dies for anti-glare coatings on polarizers, the problems of uneven particle size and environmental pollution have been solved, and the uniformity and mechanical strength of the anti-glare coatings on polarizers have been improved.
Patent Information
- Application Number
- CN202422804737.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-18
Smart Images
Figure CN223517826U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to polarizer technical field especially relates to a polarizer anti -glare coating forming die. BACKGROUND
[0002] At present, the anti-glare treatment on the surface of the protective layer of the polarizer is to coat inorganic silica particles or acrylic particles, so that the protective layer has a certain haze value, and the anti-glare effect is achieved.
[0003] The coating method of silica particles is to add inorganic silica particles with a particle size distribution of 1-10 microns to a mixed solvent, disperse uniformly, and then coat on the surface of the substrate by slit coating. After solidification and drying, a coating film with a certain haze value is formed, which is used as the protective layer material of the polarizer. Since the particle size of the silica particles used is in the range of 1-10 microns, it is difficult to control the uniformity of the particle size, and the coating of particles of different sizes may exhibit undesirable phenomena such as accumulation, high and low protrusions, etc. The anti-glare polarizer made of the protective layer of the polarizer has a high degree of surface scattered light and is disordered.
[0004] The coating method of acrylic particles is to add organic acrylic particles with a particle size distribution of less than 5 microns to a solvent, disperse uniformly, and then coat on the surface of the substrate by slit coating. After solidification and drying, a coating film with a certain haze value is formed, which is used as the protective layer material of the polarizer. The haze value can be adjusted by the particle size and amount of acrylic particles and the coating process. The particle size used in this method is about 2 microns, and the uniformity is good, but the quality is light, and it is easy to float to the surface of the coating during solidification and drying, resulting in low haze value in the coating and difficulty in adjustment. Moreover, due to the elastomeric properties of acrylic particles, the mechanical strength of the coating is weak, and the anti-glare polarizer made of the protective layer of the polarizer has weak scratch and friction resistance, etc. In addition, a large amount of acrylic particles are required to achieve the same haze value to achieve the anti-glare effect, which is expensive.
[0005] In addition, the anti-glare protective layer coated by the above two methods is made into an anti-glare polarizer. Since the coating layer of the protective layer is coated by wet coating, the particles need to be dispersed in the mixed solvent first, then solidified and dried, and finally formed. This poses a great challenge to the selection and adjustment of the mixed solvent, and the waste gas generated during the solidification and drying process easily pollutes the atmosphere, which needs to be solved urgently. SUMMARY
[0006] To solve the above technical problems, the utility model discloses a polarizer anti-glare coating forming die. This die can be used to prepare a polarizer glare coating by spin coating and transfer printing, so that the polarizer has more uniform anti-glare effect and is more environmentally friendly.
[0007] The technical scheme of the utility model discloses
[0008] A forming die for anti-glare coating of polarizing sheet, characterized in that it comprises a roller, the surface of the roller is provided with a plurality of first grooves and second grooves, the depth of the first grooves and the second grooves is not greater than 10 microns, the depth of the first grooves is less than that of the second grooves, the spacing between adjacent first grooves and the spacing between adjacent second grooves are not greater than 5 mm, and the spacing between adjacent first grooves and second grooves is not greater than 10 mm.
[0009] By adopting the technical scheme, the special structure of the die surface can be transferred to the surface of the substrate in a spin coating manner, and after the substrate is solidified, a protective layer with an anti-glare effect is formed on the polarizing sheet, and then an anti-glare polarizing sheet is manufactured, so that the method is simple, the size and position of the prepared anti-glare coating are accurately controllable, the anti-glare effect is uniform, and the flash point is low,
[0010] As a further improvement of the utility model, the first grooves and the second grooves are arranged in sequence and side by side.
[0011] As a further improvement of the utility model, the depth of the first grooves is 1-3 microns.
[0012] As a further improvement of the utility model, the depth of the second grooves is 3-5 microns.
[0013] As a further improvement of the utility model, the depth of the first grooves is 2 microns, and the depth of the second grooves is 4 microns.
[0014] As a further improvement of the utility model, the spacing between adjacent first grooves is 3 mm.
[0015] As a further improvement of the utility model, the spacing between adjacent second grooves is 4 mm.
[0016] As a further improvement of the utility model, the minimum spacing between adjacent first grooves and second grooves is 3 mm.
[0017] As a further improvement of the utility model, the first grooves and the second grooves are spherical cap-shaped grooves.
[0018] As a further improvement of the utility model, the diameter of the roller is 100-200 mm. Further preferably, the diameter of the roller is 130 mm.
[0019] Compared with the prior art, the utility model has the beneficial effects that:
[0020] The technical scheme of the utility model discloses, can pass through the mode of contact type spin coating with the special structure on the mould is transferred to the substrate surface, solidifies after can form the anti -glare coating, as the protective layer of polarizing sheet, make into the anti -glare type polarizing sheet again, simple method, the haze value of polarizing sheet can be according to the size and position of the surface structure of mould and arrange to carry out accurate control, the polarizing sheet anti -glare coating obtained is uniform to the reflection of environment, scattering light and the anti -glare effect of the transmission of back light source, when being applied to terminal display, has the characteristics of low flash point.Relative to the prior art of adding particle, adopt the mould of the utility model, can directly adopt the material of polarizing sheet protective layer and transfer, need not extra add particle, higher definition.Moreover, need not extra solvent, more environmental protection. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a structure schematic diagram of the utility model discloses a polarizing sheet anti -glare coating forming mould.
[0022] Figure 2 It is the schematic diagram of the surface of the roller of the utility model discloses a polarizing sheet anti -glare coating forming mould.
[0023] Reference signs include:
[0024] 1-roller, 2-first groove, 3-second groove. PREFERRED EMBODIMENT
[0025] The preferred embodiments of the utility model are further explained in detail below in combination with the drawings.
[0026] As Figure 1 And Figure 2 A polarizing sheet anti -glare coating forming mould, it includes roller 1, the surface of roller 1 is equipped with a plurality of first groove 2 and second groove 3, the depth of first groove 2, second groove 3 is not more than 10 μm, the depth of first groove 2 is less than the depth of second groove 3, the interval L1 between adjacent first groove 2, the interval L3 between adjacent second groove 3 is not more than 5 mm, the interval L2 between adjacent first groove 2 and second groove 3 is not more than 10 mm.
[0027] In the embodiment, the first groove 2, the second groove 3 is spherical crown shape groove, the first groove 2 and the second groove 3 are arranged in sequence. The depth of first groove 2 is 1-3 μm, the depth of second groove 3 is 3-5 μm. Preferably, the depth of first groove 2 is 2 μm, the depth of second groove 3 is 4 μm.
[0028] Preferably, the spacing L1 between adjacent first grooves 2 is 3 mm, the spacing L3 between adjacent second grooves 3 is 4 mm, and the minimum value of the spacing L2 between adjacent first grooves 2 and second grooves 3 is 3 mm.
[0029] The diameter of the roller 1 is 100-200 mm. Further preferably, the diameter of the roller 1 is 130 mm.
[0030] By using the mold of the embodiment, the protective layer resin material to be formed is spin-coated on a substrate, and the mold is printed thereon, so that the special structure of the mold surface is transferred to the surface of the substrate, and after the protective layer is solidified, the protective layer with anti-glare effect is obtained, the method is simple, the size and position of the prepared anti-glare coating are accurately controllable, the anti-glare effect is uniform, and the flash point is low.
[0031] In the description of the utility model, it is to be understood that the orientation or positional relationship indicated by terms such as 'upper', 'lower', 'front','rear', 'left', 'right','vertical', 'horizontal', 'top', 'bottom', 'inner', 'outer' and the like is the orientation or positional relationship described based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0032] In addition, the terms 'first' and'second' are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as 'first' and'second' can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of 'a plurality of' is two or more, unless otherwise specifically limited.
[0033] In the utility model, unless otherwise specifically defined and limited, the terms'mounting', 'connection', 'connection', 'fixing' and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0034] The above specific embodiments are the preferred embodiments of the utility model, and are not intended to limit the specific implementation range of the utility model, the scope of the utility model includes but is not limited to the specific embodiments, and equivalent changes made according to the shape and structure of the utility model are within the protection scope of the utility model.
Claims
1. A forming mold for a glare-reducing coating for a polarizing sheet, characterized by: The roll has a surface provided with a plurality of first grooves and second grooves, the depth of the first grooves and the second grooves is not greater than 10 microns, the depth of the first grooves is less than the depth of the second grooves, the distance between adjacent first grooves, the distance between adjacent second grooves, and the distance between adjacent first grooves and second grooves are not greater than 5 mm.
2. The forming mold for a polarizing sheet anti-glare coating according to claim 1, characterized by: The first grooves and the second grooves are arranged in sequence and side by side.
3. The forming mold for a polarizing sheet anti-glare coating according to claim 2, characterized by: The depth of the first grooves is 1-3 microns.
4. The forming mold for anti-glare coating of a polarizing plate according to claim 3, characterized by: The depth of the second grooves is 3-5 microns.
5. The forming mold for anti-glare coating of a polarizing plate according to claim 4, characterized by: The depth of the first grooves is 2 microns, and the depth of the second grooves is 4 microns.
6. The forming mold for anti-glare coating of a polarizing plate according to claim 2, characterized by: The distance between adjacent first grooves is 3 mm.
7. The forming mold for anti-glare coating of a polarizing plate according to claim 6, characterized by: The distance between adjacent second grooves is 4 mm.
8. The forming mold for a polarizing sheet anti-glare coating according to claim 7, characterized by: The minimum distance between adjacent first grooves and second grooves is 3 mm.
9. The forming mold for anti-glare coating of a polarizing plate according to claim 1, characterized by: The first grooves and the second grooves are spherical cap-shaped grooves.
10. The forming mold for anti-glare coating of a polarizing plate according to any one of claims 1 to 9, characterized by: The diameter of the roll is 100-200 mm.