Anti-stain toughened film

Abstract

The utility model discloses an anti-stain toughened film which comprises a toughened film body, an anti-fouling coating is arranged on the upper surface of the toughened film body, the anti-fouling coating is a fluorocarbon polymer coating, and nano titanium dioxide particles are uniformly dispersed in the anti-fouling coating. The antifouling coating is a fluorocarbon polymer coating and contains nano titanium dioxide particles with specific particle sizes and proportions, stains are difficult to adhere due to the low surface energy characteristic of fluorocarbon polymers, the antifouling capacity is further enhanced due to the existence of the nano titanium dioxide particles, retention of the stains such as fingerprints and oil stains on the surface of the tempered film is effectively reduced, and the service life of the tempered film is prolonged. And meanwhile, the silicon carbide wear-resistant coating is also arranged on the surface of the antifouling coating, and the thickness of the silicon carbide wear-resistant coating is set to be proper, so that the scratch resistance of the tempered glass film can be remarkably improved, the tempered glass film is protected from being scratched by sharp objects in daily use, and the service life of the tempered glass film is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of tempered films, in particular to an anti-fouling tempered film. Background Art

[0002] With the widespread use of modern electronic devices such as smartphones and tablets, screen protection has become an important demand. Tempered glass films, as a common screen protection material, are widely used. However, traditional tempered glass films have many problems. In daily use, the screen is easily stained with stains such as fingerprints and oil stains. These stains not only affect the appearance of the screen, but may also interfere with the touch operation of the screen. Moreover, existing tempered glass films are insufficient in terms of scratch resistance and crack resistance. They are easily scratched by sharp objects and easily cracked when subjected to external impact. In addition, the bonding effect of the tempered glass film and the screen is not satisfactory. Bubbles are easily generated during the bonding process, and the bonding is not tight enough, which may cause the edges to curl up during use.

[0003] While some attempts have been made to improve single properties of tempered glass, such as anti-fouling and wear resistance, these improvements may come at the expense of adhesion or scratch resistance. Furthermore, when applying the tempered glass, users often need to be extremely careful with the screen alignment; even the slightest deviation can lead to adhesion failure or the creation of bubbles, causing inconvenience for the user. Utility Model Content

[0004] The purpose of the present invention is to provide an anti-fouling tempered film to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-fouling tempered film, comprising a tempered film body, an anti-fouling coating provided on the upper surface of the tempered film body, the anti-fouling coating being a fluorocarbon polymer coating, the thickness of the anti-fouling coating being 0.1-0.5 μm, nano-titanium dioxide particles being uniformly dispersed in the anti-fouling coating, the particle size of the nano-titanium dioxide particles being 10-50 nm, and the mass fraction of the nano-titanium dioxide particles in the anti-fouling coating being 1%-5%; a silica gel adsorption layer being provided on the lower surface of the tempered film body, the thickness of the silica gel adsorption layer being 0.05-0.2 mm, a plurality of evenly distributed micro-protrusions are provided on the surface of the silicone adsorption layer, the height of the micro-protrusions is 0.01-0.05mm, electrostatic adsorption particles are mixed in the silicone adsorption layer, the particle size of the electrostatic adsorption particles is 0.1-1μm, and the mass fraction of the electrostatic adsorption particles in the silicone adsorption layer is 0.5%-3%, and a positioning mechanism is provided at the bottom of the silicone adsorption layer, and the positioning mechanism includes an enclosure paper pasted on the edge of the tempered film body, the accommodating cavity formed by the enclosure paper is adapted to the size of the mobile phone, and the enclosure paper is bonded to the edge of the tempered film body through alternating self-adhesive dots.

[0006] As a preferred solution of the present invention, a wear-resistant layer is provided on the surface of the antifouling coating, and the wear-resistant layer is a silicon carbide wear-resistant coating, and the thickness of the wear-resistant layer is 0.005-0.02 μm.

[0007] As a preferred solution of the present invention, the thickness of the tempered membrane body is 0.2-0.5mm, and the tempered membrane body is composed of multiple layers of glass fiber layers and resin layers alternately stacked, and toughening fibers are provided between adjacent glass fiber layers and resin layers. The toughening fibers are aramid fibers, and the diameter of the aramid fibers is 0.01-0.05mm.

[0008] As a preferred solution of the present invention, a tear strip is provided on one edge of the release paper bonded to the bottom of the silicone adsorption layer, the width of the tear strip is 1-3 mm, and a weakening line is provided at the connection between the tear strip and the release paper, the depth of the weakening line is 1 / 3-1 / 2 of the thickness of the release paper.

[0009] As a preferred solution of the present invention, the edge of the tempered film body is provided with a rounded chamfer, the radius of the rounded chamfer is 0.5-2mm, the rounded chamfer is covered with a flexible protective cover, the flexible protective cover is made of rubber, and the thickness of the flexible protective cover made of rubber is 0.1-0.3mm.

[0010] As a preferred solution of the present invention, a bonding layer is provided between the anti-fouling coating and the tempered film body, the bonding layer is an acrylic bonding layer, the thickness of the bonding layer is 0.01-0.05mm, a plurality of micropores are provided in the bonding layer, the diameter of the micropores is 0.001-0.005mm, and the micropores are filled with air.

[0011] As a preferred solution of the present invention, an anti-reflection layer is provided on the upper surface of the tempered film body, and the anti-reflection layer is located below the anti-fouling coating. The anti-reflection layer is a multi-layer optical film structure, and the anti-reflection layer is composed of alternating high refractive index layers and low refractive index layers. The refractive index of the high refractive index layer is 1.8-2.2, and the refractive index of the low refractive index layer is 1.3-1.5.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1) The anti-fouling tempered glass film of the present invention is provided with an anti-fouling coating. The anti-fouling coating adopts a fluorocarbon polymer coating and contains nano-titanium dioxide particles of a specific particle size and ratio. The low surface energy characteristics of the fluorocarbon polymer make it difficult for stains to adhere. The presence of nano-titanium dioxide particles further enhances the anti-fouling ability, effectively reducing the retention of fingerprints, oil stains and other stains on the surface of the tempered glass. At the same time, the surface of the anti-fouling coating is also provided with a silicon carbide wear-resistant coating. By setting its appropriate thickness, it can significantly improve the scratch resistance of the tempered glass, protect the tempered glass from scratches by sharp objects in daily use, and extend the service life of the tempered glass.

[0014] 2) The tempered film body of the present invention is composed of multiple layers of glass fiber layers and resin layers alternately stacked, and aramid fibers are arranged between adjacent layers as toughening fibers, so that the tempered film can effectively disperse stress when subjected to external force impact and is not easy to break; the micro-protrusions of the silicone adsorption layer help to expel air and prevent the generation of bubbles. The electrostatic adsorption particles can enhance the adsorption force during attachment, making the fit tighter. The positioning mechanism can assist in the positioning of the tempered film and the screen, and improve the success rate of the fit. At the same time, the rounded chamfers and the flexible protective cover made of rubber protect the edges of the tempered film to prevent edge wear and cracking. The anti-reflective layer can improve the clarity of the screen display and reduce light reflection, so that this type of tempered film has significant advantages in screen protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the back structure of the utility model;

[0017] Figure 3 This is an exploded schematic diagram of the utility model;

[0018] Figure 4 This is a cross-sectional view of the tempered film body of the present invention;

[0019] Figure 5 This is a schematic diagram of the anti-reflection layer structure of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the silica gel adsorption layer of the utility model;

[0021] Figure 7 This is a schematic diagram of the adhesive layer structure of the present utility model.

[0022] In the figure: 1. Tempered film body; 2. Anti-fouling coating; 3. Silicone adsorption layer; 4. Micro-protrusions; 5. Wear-resistant layer; 6. Easy-tear strip; 7. Weakened line; 8. Rounded chamfer; 9. Flexible protective cover; 10. Adhesive layer; 11. Micropores; 12. Anti-reflective layer; 30. Positioning mechanism; 101. Glass fiber layer; 102. Resin layer; 103. Toughening fiber; 301. Enclosing paper; 302. Self-adhesive dots. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-7 The utility model provides a technical solution: an anti-fouling tempered film, comprising a tempered film body 1, an anti-fouling coating 2 provided on the upper surface of the tempered film body 1, the anti-fouling coating 2 being a fluorocarbon polymer coating, the thickness of the anti-fouling coating 2 being 0.1-0.5 μm, nano-titanium dioxide particles being uniformly dispersed in the anti-fouling coating 2, the particle size of the nano-titanium dioxide particles being 10-50 nm, and the mass fraction of the nano-titanium dioxide particles in the anti-fouling coating 2 being 1%-5%;

[0025] The lower surface of the tempered film body 1 is provided with a silicone adsorption layer 3, the thickness of the silicone adsorption layer 3 is 0.05-0.2mm, the surface of the silicone adsorption layer 3 is provided with a number of evenly distributed micro-protrusions 4, the height of the micro-protrusions 4 is 0.01-0.05mm, and the silicone adsorption layer 3 is mixed with electrostatic adsorption particles, the particle size of the electrostatic adsorption particles is 0.1-1μm, and the mass fraction of the electrostatic adsorption particles in the silicone adsorption layer 3 is 0.5%-3%. A positioning mechanism 30 is provided at the bottom of the silicone adsorption layer 3, and the positioning mechanism 30 includes an enclosure paper 301 pasted on the edge of the tempered film body 1. The accommodating cavity formed by the enclosure paper 301 is adapted to the size of the mobile phone, and the enclosure paper 301 is bonded to the edge of the tempered film body 1 through alternating self-adhesive dots 302.

[0026] Specifically, the anti-fouling coating 2 provided on the tempered film body 1 is processed by fluorocarbon polymer coating. The extremely low surface energy of fluorocarbon polymer makes it difficult for stains to adhere to its surface. Nano-titanium dioxide particles with a particle size of 10-50nm and a mass fraction of 1%-5% are evenly dispersed in the anti-fouling coating 2, which can further enhance the anti-fouling ability. The interaction between the nano-titanium dioxide particles and the stain molecules can prevent the deposition of stains on the surface of the film. The silica gel adsorption layer 3 provided can enable the tempered film to be firmly attached to the screen surface. The silica gel adsorption layer 3 has several evenly distributed micro-protrusions 4 with a height of 0.01-0.05mm, which can effectively expel air during the bonding process to avoid the generation of bubbles. The electrostatic adsorption particles provided can further enhance the adsorption force and ensure the tightness of the bond.

[0027] The positioning mechanism 30 at the bottom of the silicone adsorption layer 3 can help the tempered film to be quickly and accurately positioned on the screen when the tempered film is attached, thereby greatly improving the success rate of attachment and reducing the occurrence of attachment failures or bubbles due to alignment deviations. After attachment is completed, only the enclosing paper 301 needs to be removed.

[0028] In this embodiment, a wear-resistant layer 5 is provided on the surface of the antifouling coating 2. The wear-resistant layer 5 is a silicon carbide wear-resistant coating. The thickness of the wear-resistant layer 5 is 0.005-0.02 μm.

[0029] Specifically, the wear-resistant layer 5 cooperates with the anti-fouling coating 2, and the wear-resistant layer 5 provides additional protection for the tempered film. When sharp objects from the outside come into contact with the surface of the tempered film, the silicon carbide material of the wear-resistant layer 5 can effectively withstand friction and scratches, avoid the intrusion of sharp objects, and prevent scratches on the anti-fouling coating 2 and the tempered film body 1.

[0030] In this embodiment: the thickness of the tempered membrane body 1 is 0.2-0.5 mm, and the tempered membrane body 1 is composed of multiple layers of glass fiber layers 101 and resin layers 102 alternately stacked, and toughening fibers 103 are provided between adjacent glass fiber layers 101 and resin layers 102. The toughening fibers 103 are aramid fibers, and the diameter of the aramid fibers is 0.01-0.05 mm.

[0031] Specifically, the tempered film body 1 is formed by alternating multiple glass fiber layers 101 and resin layers 102, so that the tempered film body 1 has high strength. The multiple glass fiber layers 101 can provide basic support and anti-deformation ability for the tempered film, and the resin layer 102 can play a role of buffering and bonding. When the tempered film is subjected to external force, it absorbs and disperses part of the energy to reduce stress concentration.

[0032] The toughening fibers 103 arranged between the adjacent glass fiber layers 101 and the resin layer 102 are made of aramid fibers. By utilizing the toughness of aramid fibers, when the mobile phone is accidentally dropped or collided, the toughening fibers 103 can effectively prevent the cracks in the tempered film from spreading, so that the tempered film body 1 can effectively disperse stress when subjected to external force impact, is not easy to break, and provides reliable protection for the screen.

[0033] In this embodiment: an easy-tear strip 6 is provided on one edge of the release paper bonded to the bottom of the silicone adsorption layer 3, the width of the easy-tear strip 6 is 1-3 mm, and a weakening line 7 is provided at the connection between the easy-tear strip 6 and the release paper, the depth of the weakening line 7 is 1 / 3-1 / 2 of the thickness of the release paper.

[0034] Specifically, when using a tempered film, when the tempered film needs to be attached to the screen, the user can easily grab the tear strip 6. Due to the presence of the weakening line 7, the tear strip 6 together with the release paper can be easily torn off from the silicone adsorption layer 3, which makes it convenient for the user to tear off the protective film of the silicone adsorption layer 3 without affecting the overall structure and performance of the silicone adsorption layer 3.

[0035] In this embodiment: the edge of the tempered film body 1 is provided with a rounded chamfer 8, the radius of the rounded chamfer 8 is 0.5-2mm, the rounded chamfer 8 is covered with a flexible protective cover 9, the flexible protective cover 9 is made of rubber, and the thickness of the flexible protective cover 9 of rubber is 0.1-0.3mm.

[0036] Specifically, in daily use, when the user touches the edge of the tempered film or touches the mobile phone with other objects, the rounded chamfer 8 can prevent scratches on fingers or other objects. The flexible protective cover 9 made of rubber cooperates with the rounded chamfer 8 to further enhance the protection effect of the edge. When the edge of the tempered film is hit or rubbed by external force, the flexible protective cover 9 can absorb part of the energy and reduce damage to the edge of the tempered film.

[0037] In this embodiment: an adhesive layer 10 is provided between the antifouling coating 2 and the tempered film body 1, the adhesive layer 10 is an acrylic adhesive layer, the thickness of the adhesive layer 10 is 0.01-0.05mm, and a plurality of micropores 11 are provided in the adhesive layer 10, the diameter of the micropores 11 is 0.001-0.005mm, and the micropores 11 are filled with air.

[0038] Specifically, the adhesive layer 10 made of acrylic acid has good adhesive properties, which can make the anti-fouling coating 2 firmly adhere to the tempered film body 1. When the tempered film is bent by external force, the air in the micropores 11 can act as a buffer to prevent stress from concentrating on a certain point of the adhesive layer 10, thereby avoiding separation between the anti-fouling coating 2 and the tempered film body 1 due to excessive stress, and also improving the structural stability of the entire tempered film, ensuring that under various usage conditions, the various functional layers of the tempered film can work together and there will be no separation of the functional layers.

[0039] In this embodiment: an anti-reflection layer 12 is provided on the upper surface of the tempered film body 1, and the anti-reflection layer 12 is located below the anti-fouling coating 2. The anti-reflection layer 12 is a multi-layer optical film structure, and the anti-reflection layer 12 is composed of alternating high refractive index layers and low refractive index layers. The refractive index of the high refractive index layer is 1.8-2.2, and the refractive index of the low refractive index layer is 1.3-1.5.

[0040] Specifically, when light shines on the surface of the tempered film, due to the alternating arrangement of materials with different refractive indices in the anti-reflection layer 12, the light will be reflected and refracted multiple times between the layers, and most of the reflected light will interfere with each other and cancel each other out, thereby reducing the reflection of light on the surface of the tempered film, allowing more light emitted by the screen to pass through the tempered film, thereby improving the clarity of the screen display. At the same time, the anti-reflection layer 12 cooperates with other functional layers such as the anti-fouling coating 2 to optimize the optical properties of the tempered film without affecting the anti-fouling, wear-resistant and other functions.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stain-resistant tempered glass film, characterized in that: The invention comprises a tempered membrane body (1), wherein an antifouling coating (2) is provided on the upper surface of the tempered membrane body (1), wherein the antifouling coating (2) is a fluorocarbon polymer coating, wherein the thickness of the antifouling coating (2) is 0.1-0.5 μm, wherein nano-titanium dioxide particles are uniformly dispersed in the antifouling coating (2), wherein the particle size of the nano-titanium dioxide particles is 10-50 nm, and the mass fraction of the nano-titanium dioxide particles in the antifouling coating (2) is 1%-5%; The lower surface of the tempered film body (1) is provided with a silica gel adsorption layer (3), the thickness of the silica gel adsorption layer (3) is 0.05-0.2mm, the surface of the silica gel adsorption layer (3) is provided with a number of evenly distributed micro protrusions (4), the height of the micro protrusions (4) is 0.01-0.05mm, the silica gel adsorption layer (3) is mixed with electrostatic adsorption particles, the particle size of the electrostatic adsorption particles is 0.1-1μm, and the mass fraction of the electrostatic adsorption particles in the silica gel adsorption layer (3) is 0.5%-3%, and a positioning mechanism (30) is provided at the bottom of the silica gel adsorption layer (3), the positioning mechanism (30) includes an enclosure paper (301) pasted on the edge of the tempered film body (1), the accommodating cavity formed by the enclosure paper (301) is adapted to the size of the mobile phone, and the enclosure paper (301) is bonded to the edge of the tempered film body (1) through alternating self-adhesive dots (302).

2. The anti-fouling tempered glass according to claim 1, characterized in that: The surface of the antifouling coating (2) is provided with a wear-resistant layer (5), the wear-resistant layer (5) is a silicon carbide wear-resistant coating, and the thickness of the wear-resistant layer (5) is 0.005-0.02 μm.

3. The anti-fouling tempered glass according to claim 1, characterized in that: The thickness of the tempered membrane body (1) is 0.2-0.5 mm. The tempered membrane body (1) is formed by alternating multiple glass fiber layers (101) and resin layers (102). Toughening fibers (103) are provided between adjacent glass fiber layers (101) and resin layers (102). The toughening fibers (103) are aramid fibers, and the diameter of the aramid fibers is 0.01-0.05 mm.

4. The anti-fouling tempered glass according to claim 1, characterized in that: An easy-tear strip (6) is provided on one edge of the release paper bonded to the bottom of the silica gel adsorption layer (3), the width of the easy-tear strip (6) is 1-3 mm, and a weakening line (7) is provided at the connection between the easy-tear strip (6) and the release paper, the depth of the weakening line (7) is 1 / 3-1 / 2 of the thickness of the release paper.

5. The anti-fouling tempered glass according to claim 1, characterized in that: The edge of the tempered film body (1) is provided with a rounded chamfer (8), the radius of the rounded chamfer (8) is 0.5-2mm, the rounded chamfer (8) is covered with a flexible protective cover (9), the flexible protective cover (9) is made of rubber material, and the thickness of the flexible protective cover (9) made of rubber material is 0.1-0.3mm.

6. The anti-fouling tempered glass according to claim 1, characterized in that: An adhesive layer (10) is provided between the antifouling coating (2) and the tempered film body (1), the adhesive layer (10) is an acrylic adhesive layer, the thickness of the adhesive layer (10) is 0.01-0.05 mm, a plurality of micropores (11) are provided in the adhesive layer (10), the diameter of the micropores (11) is 0.001-0.005 mm, and the micropores (11) are filled with air.

7. The anti-fouling tempered glass according to claim 1, characterized in that: The upper surface of the tempered film body (1) is provided with an anti-reflection layer (12), and the anti-reflection layer (12) is located below the anti-fouling coating (2). The anti-reflection layer (12) is a multi-layer optical film structure, and the anti-reflection layer (12) is composed of alternating high-refractive index layers and low-refractive index layers. The refractive index of the high-refractive index layer is 1.8-2.2, and the refractive index of the low-refractive index layer is 1.3-1.5.

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