An anti-interference privacy film and its triple-coating machine

Abstract

The present invention discloses an anti-interference privacy screen film and its three-coating machine, which relates to the technical field of anti-interference privacy screen films. It includes a base layer, a triangular prism layer, and an anti-peeping structure layer. The surface of the base layer is provided with a triangular prism layer, and the surface of the triangular prism layer is provided with an anti-peeping structure layer. A black glue layer is filled between the anti-peeping structure layers. Among them, the base layer is any one of PET, PC, PU, TPU, TPH, and PVC. The triangular prism layer is in a colloidal state, with a Pitch of 35-45um; an angle of 70-110°; a height of 10-30um. The anti-peeping structure layer is a trapezoidal prism of a micron-level grating. This anti-interference privacy screen film is used for anti-peeping privacy protection of mobile phones, tablets, and computers. Its total viewing angle is 80.05%, the viewing angle of the left view is 48.89%, and the viewing angle of the right view is 31.15%. It can effectively solve the 0° interference anomaly problem, provide a more stable and reliable anti-peeping effect for users, and optimize the visual experience at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-interference privacy screen films, and specifically to an anti-interference privacy screen film and its three-coating machine. Background Art

[0002] A privacy screen film is a privacy protection accessory used to protect the content on the screen. It is usually applied to the display screens of electronic devices such as mobile phones, tablet computers, and laptop computers. Its main function is to limit the viewing angle of the screen so that the display content can only be clearly seen when directly facing the screen, while it will appear blurred or invisible when viewed from a side angle.

[0003] In the actual use of existing privacy screen films, when the viewing angle is 0° (i.e., directly facing the screen), optical interference phenomena are likely to occur, manifested as abnormal screen displays, such as problems like ripples, flickers, and color spots, thus affecting the visual experience.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and an anti-interference privacy screen film and its three-coating machine are proposed. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an anti-interference privacy screen film and its three-coating machine, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A three-coating machine includes a power output shaft and an intaglio printing plate roller. The surface of the power output shaft is connected with the intaglio printing plate roller, and a material feeding roller is arranged below the intaglio printing plate roller. A glue storage tank is arranged above the intaglio printing plate roller, and a glue delivery pipe is connected to the bottom of the glue storage tank. The bottom of the glue delivery pipe is connected with a glue outlet cover, and a scraper is arranged on one side inside the glue outlet cover. The scraper is attached to the surface of the intaglio printing plate roller. Transmission and glue pressing components are fixed at both ends of the glue storage tank. The transmission and glue pressing components include a transmission medium tank, an electric telescopic piston rod, and a crank transmission shaft. The electric telescopic piston rod penetrates through the bottom of the transmission medium tank, and the bottom of the electric telescopic piston rod is connected with the crank transmission shaft.

[0007] Further, both sides of the crank transmission shaft are connected with the power output shaft, and the crank transmission shaft rotates synchronously with the intaglio printing plate roller.

[0008] Further, the transmission and glue pressing components further include a lifting piston rod and a glue pressing block. The lifting piston rod penetrates through the top of the transmission medium tank, and the end of the lifting piston rod is connected with the glue pressing block.

[0009] Further, the glue pressing block is located inside the glue storage tank, and the outer dimension of the glue pressing block is adapted to the inner dimension of the glue storage tank.

[0010] Furthermore, a branched glue replenishing pipeline is penetrated through the surface of the pressure glue block, and the branched glue replenishing pipeline is communicated with the inside of the glue storage tank.

[0011] An anti-interference privacy protection film, which applies the above-mentioned three-coating machine, includes a base layer, a triangular prism layer and an anti-peeping structure layer. The triangular prism layer is arranged on the surface of the base layer, and the anti-peeping structure layer is arranged on the surface of the triangular prism layer. A black glue layer is filled between the anti-peeping structure layers.

[0012] Furthermore, the base layer is any one of PET, PC, PU, TPU, TPH, and PVC.

[0013] Furthermore, the triangular prism layer is in a colloidal state, with a Pitch of 35-45um; an angle of 70-110°; and a height of 10-30um.

[0014] Furthermore, the anti-peeping structure layer is a trapezoidal prism of a micron-level grating, and the anti-peeping structure layer is in a colloidal state, with a Pitch of 22-42um; an angle of 1.5-4.5°; and a height of 20-90um.

[0015] The present invention provides an anti-interference privacy protection film and its three-coating machine, which have the following beneficial effects:

[0016] 1. For this anti-interference privacy protection film and its three-coating machine, the anti-interference privacy protection film is used for anti-peeping privacy protection of mobile phones, tablets, and computers. Its total visible angle is 80.05%, the left viewing angle is 48.89%, and the right viewing angle is 31.15%. It can effectively solve the 0° interference abnormality problem, provide a more stable and reliable anti-peeping effect for users, and optimize the visual experience at the same time.

[0017] 2. For this anti-interference privacy protection film and its three-coating machine, compared with the existing method of using a pump body to transport the colloid, when using the intaglio printing plate cylinder for operation, the self-rotation action drives the electric telescopic piston rod through the crank transmission shaft, so that the lifting piston rod drives the pressure glue block to do lifting movement inside the glue storage tank. As a result, the pressure glue block continuously applies pressure to the colloid, so that the colloid continuously enters the inside of the glue outlet cover and fully fills the grooves on the surface of the intaglio printing plate cylinder. Thus, the operation of the pump body participating in transporting the colloid is removed, so that it is not necessary to perform regular maintenance on the pump body. And because the crank transmission shaft, the electric telescopic piston rod, and the lifting piston rod are located outside, it is convenient for maintenance, and the maintenance and repair are much simpler than the maintenance of the pump body. Description of the Drawings

[0018] Figure 1 It is a schematic cross-sectional structure view of the base layer of an anti-interference privacy protection film of the present invention;

[0019] Figure 2 It is a schematic front structure view of the glue storage tank of a three-coating machine of the present invention;

[0020] Figure 3 Schematic diagram of the back structure of the glue storage tank of a three - coating machine according to the present invention;

[0021] Figure 4 Schematic diagram of the bottom structure of the glue storage tank of a three - coating machine according to the present invention;

[0022] Figure 5 Schematic diagram of the bottom structure of the glue pressing block of a three - coating machine according to the present invention.

[0023] In the figure: 1, base layer; 2, triangular prism layer; 3, anti - peeping structure layer; 4, black glue layer; 5, power output shaft; 6, gravure cylinder; 7, feeding roller; 8, glue delivery pipe; 9, glue outlet cover; 10, scraper; 11, transmission glue pressing assembly; 1101, transmission medium box; 1102, electric telescopic piston rod; 1103, crank transmission shaft; 1104, lifting piston rod; 1105, glue pressing block; 12, branch - type glue replenishing pipeline; 13, glue storage tank. Specific embodiments

[0024] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] As Figure 1 shown, the present invention provides a technical solution: an anti - interference anti - peeping film, including a base layer 1, a triangular prism layer 2 and an anti - peeping structure layer 3. A triangular prism layer 2 is provided on the surface of the base layer 1, and an anti - peeping structure layer 3 is provided on the surface of the triangular prism layer 2. A black glue layer 4 is filled between the anti - peeping structure layers 3;

[0026] Among them, the base layer 1 is any one of PET, PC, PU, TPU, TPH, and PVC;

[0027] The triangular prism layer 2 is in a colloidal state, with a Pitch of 35 - 45um; an angle of 70 - 110°; a height of 10 - 30um;

[0028] The anti - peeping structure layer 3 is a trapezoidal prism of a micron - level grating, and the anti - peeping structure layer 3 is in a colloidal state, with a Pitch of 22 - 42um; an angle of 1.5 - 4.5°; a height of 20 - 90um;

[0029] The total visible angle of the anti - interference anti - peeping film is 80.05%, the left - view visible angle is 48.89%, and the right - view visible angle is 31.15%;

[0030] Based on the above description, the base layer 1 of the present invention is any one of PET, PC, PU, TPU, TPH, and PVC, and its surface is subjected to a light release treatment. A triangular prism layer 2 is provided on the surface of the base layer 1, which is in a colloidal state. After the colloidal triangular prism layer 2 adheres to the base layer 1, it is cured by UV lamp irradiation. Then, an anti-peeping structure layer 3 is attached to the surface of the triangular prism layer 2. The anti-peeping structure layer 3 is a trapezoidal prism of a micron-level grating and is also in a colloidal state. It is still cured by UV lamp irradiation. Then, a black glue layer 4 is filled in the space between the anti-peeping structure layers 3. This anti-interference anti-peeping film is used for anti-peeping privacy protection of mobile phones, tablets, and computers. Its total viewing angle is 80.05%, the left viewing angle is 48.89%, and the right viewing angle is 31.15%. It can effectively solve the 0° interference anomaly problem, provide a more stable and reliable anti-peeping effect for users, and optimize the visual experience at the same time.

[0031] As Figures 1-5 shown, a three-coating machine is applied to the above-mentioned anti-interference anti-peeping film. The three-coating machine includes a power output shaft 5. A gravure plate roller 6 is connected to the surface of the power output shaft 5. A material feeding roller 7 is arranged below the gravure plate roller 6. A glue storage tank 13 is arranged above the gravure plate roller 6. A glue delivery pipe 8 is connected to the bottom of the glue storage tank 13. The bottom of the glue delivery pipe 8 is connected to a glue outlet cover 9. A scraper 10 is arranged on one side inside the glue outlet cover 9. The scraper 10 is attached to the surface of the gravure plate roller 6. Transmission pressure glue assemblies 11 are fixed at both ends of the glue storage tank 13. The transmission pressure glue assembly 11 includes a transmission medium tank 1101, an electric telescopic piston rod 1102, and a crank transmission shaft 1103. The electric telescopic piston rod 1102 penetrates through the bottom of the transmission medium tank 1101, and the bottom of the electric telescopic piston rod 1102 is connected to the crank transmission shaft 1103. Both sides of the crank transmission shaft 1103 are connected to the power output shaft 5, and the crank transmission shaft 1103 rotates synchronously with the gravure plate roller 6. The transmission pressure glue assembly 11 further includes a lifting piston rod 1104 and a pressure glue block 1105. The lifting piston rod 1104 penetrates through the top of the transmission medium tank 1101, and the end of the lifting piston rod 1104 is connected to the pressure glue block 1105. The pressure glue block 1105 is located inside the glue storage tank 13, and the outer dimension of the pressure glue block 1105 is adapted to the inner dimension of the glue storage tank 13. A sub-pipe type glue replenishing pipeline 12 penetrates through the surface of the pressure glue block 1105, and the sub-pipe type glue replenishing pipeline 12 is communicated with the inside of the glue storage tank 13;

[0032] The specific operation is as follows. When successively attaching the triangular prism layer 2, the anti-peeping structure layer 3, and the black glue layer 4 to the surface of the base layer 1 through the three-coating machine, the base layer 1 passes through three groups of gravure plate rollers 6 and material feeding rollers 7. The surface structure of each gravure plate roller 6 in each group is adapted to the shapes of the cured triangular prism layer 2, the anti-peeping structure layer 3, and the black glue layer 4;

[0033] First, each colloid is injected into the interior of the glue storage tank 13 along the branch-type glue replenishing pipeline 12 through a pump body. When the gravure printing plate cylinder 6 and the material conveying roller 7 rotate to convey the base layer 1 and the triangular prism layer 2, the anti-peeping structure layer 3, and the black glue layer 4 are printed on its surface, the rotation of the gravure printing plate cylinder 6 drives the crank transmission shaft 1103, causing the electric telescopic piston rod 1102 to perform a lifting piston motion. Thus, the transmission medium inside the transmission medium tank 1101 is pushed, and the lifting piston rod 1104 drives the glue pressing block 1105 to perform a lifting motion inside the glue storage tank 13. Each time the glue pressing block 1105 descends, the colloid is pressed down and enters the glue outlet cover 9 along the glue conveying pipe 8. When the glue pressing block 1105 rises, the colloid is replenished through the branch-type glue replenishing pipeline 12. Under the piston motion of the glue pressing block 1105, the colloid continuously enters the glue outlet cover 9. The glue outlet cover 9 fits on the surface of the gravure printing plate cylinder 6. When the gravure printing plate cylinder 6 rotates, the colloid inside the glue outlet cover 9 is fully and evenly attached to the grooves inside the gravure printing plate cylinder 6 under the push of the subsequent colloid. At the same time, the excess colloid is scraped off by the scraper 10, and the excess colloid remains inside the glue outlet cover 9 for filling the subsequent grooves;

[0034] Among them, by using the telescopic function of the electric telescopic piston rod 1102 itself, the lifting height of the glue pressing block 1105 can be adjusted by controlling the telescopic length of the electric telescopic piston rod 1102, thereby controlling the downward pressure of the colloid to adapt to the remaining amount of colloid inside the glue storage tank 13;

[0035] In the existing method of using a pump body to convey the colloid inside the glue storage tank 13 to the inside of the glue outlet cover 9, power is applied by the pump body to fill the inside of the glue outlet cover 9 with colloid, thereby ensuring that the colloid is fully filled into the grooves on the surface of the gravure printing plate cylinder 6. However, the pump body has a precise structure and requires the colloid to pass through its interior, resulting in the need for regular maintenance of the pump body, and the maintenance content is complex and cumbersome;

[0036] Based on the above description, compared with the existing method of using a pump body to convey colloid, when the gravure printing plate cylinder 6 operates, its self-rotation drives the crank transmission shaft 1103 to drive the electric telescopic piston rod 1102, causing the lifting piston rod 1104 to drive the glue pressing block 1105 to perform a lifting motion inside the glue storage tank 13. Thus, the glue pressing block 1105 continuously applies pressure to the colloid, causing the colloid to continuously enter the inside of the glue outlet cover 9 and fully fill the grooves on the surface of the gravure printing plate cylinder 6. Thereby, the pump body is removed from the operation of conveying colloid, eliminating the need for regular maintenance of the pump body. And since the crank transmission shaft 1103, the electric telescopic piston rod 1102, and the lifting piston rod 1104 are located outside, it is convenient for maintenance, and the maintenance and repair are much simpler than the maintenance of the pump body.

[0037] In summary, for the anti-interference privacy film and its three-coating machine, during use, first, the triangular prism layer 2, the privacy protection structure layer 3, and the black glue layer 4 are sequentially attached to the surface of the base layer 1 through the three-coating machine. The base layer 1 passes through three groups of gravure printing rollers 6 and feeding rollers 7. The surface structure of each gravure printing roller 6 in each group is adapted to the shapes of the cured triangular prism layer 2, the privacy protection structure layer 3, and the black glue layer 4.

[0038] Among them, each colloid is injected into the interior of the glue storage tank 13 along the branch-type glue replenishing pipeline 12 through a pump body. When the gravure printing rollers 6 and the feeding rollers 7 rotate to convey the base layer 1 and print and attach the triangular prism layer 2, the privacy protection structure layer 3, and the black glue layer 4 on its surface, the rotation of the gravure printing roller 6 drives the crank transmission shaft 1103, causing the electric telescopic piston rod 1102 to perform a lifting piston movement. Thereby, the transmission medium inside the transmission medium tank 1101 is pushed, and the lifting piston rod 1104 drives the pressure rubber block 1105 to perform a lifting movement inside the glue storage tank 13. Each time the pressure rubber block 1105 descends, the colloid is pressed down and enters the glue outlet cover 9 along the glue delivery pipe 8. When the pressure rubber block 1105 rises, the colloid is replenished through the branch-type glue replenishing pipeline 12. Under the piston movement of the pressure rubber block 1105, the colloid continuously enters the glue outlet cover 9. The glue outlet cover 9 is attached to the surface of the gravure printing roller 6. When the gravure printing roller 6 rotates, the colloid inside the glue outlet cover 9 is fully and evenly attached to the grooves of the gravure printing roller 6 under the push of the subsequent colloid. At the same time, the excess colloid is scraped off by the scraper 10, and the excess colloid remains inside the glue outlet cover 9 for filling the subsequent grooves.

[0039] Among them, by utilizing the telescopic action of the electric telescopic piston rod 1102 itself, the lifting height of the pressure rubber block 1105 can be adjusted by controlling the telescopic length of the electric telescopic piston rod 1102, thereby controlling the downward pressure of the colloid to adapt to the remaining colloid amount inside the glue storage tank 13.

[0040] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A three - coating machine, comprising a power output shaft (5) and a gravure printing plate cylinder (6), characterized in that: The surface of the power output shaft (5) is connected with an intaglio printing plate cylinder (6), and a material conveying roller (7) is arranged below the intaglio printing plate cylinder (6). A glue storage tank (13) is arranged above the intaglio printing plate cylinder (6), and a glue conveying pipe (8) is connected to the bottom of the glue storage tank (13). The bottom of the glue conveying pipe (8) is connected with a glue outlet cover (9), and a scraper (10) is arranged on one side inside the glue outlet cover (9). The scraper (10) is attached to the surface of the intaglio printing plate cylinder (6). Transmission glue pressing assemblies (11) are fixed at both ends of the glue storage tank (13). The transmission glue pressing assemblies (11) include a transmission medium tank (1101), an electric telescopic piston rod (1102), and a crank transmission shaft (1103). The electric telescopic piston rod (1102) penetrates through the bottom of the transmission medium tank (1101), and the bottom of the electric telescopic piston rod (1102) is connected with the crank transmission shaft (1103). Both sides of the crank transmission shaft (1103) are connected with the power output shaft (5), and the crank transmission shaft (1103) rotates synchronously with the intaglio printing plate cylinder (6). The transmission glue pressing assemblies (11) further include a lifting piston rod (1104) and a glue pressing block (1105). The lifting piston rod (1104) penetrates through the top of the transmission medium tank (1101), and the end of the lifting piston rod (1104) is connected with the glue pressing block (1105). A branch type glue replenishing pipeline (12) penetrates through the surface of the glue pressing block (1105), and the branch type glue replenishing pipeline (12) is communicated with the inside of the glue storage tank (13).

2. The three-coating machine according to claim 1, wherein: The glue pressing block (1105) is located inside the glue storage tank (13), and the outer structure size of the glue pressing block (1105) is adapted to the inner structure size of the glue storage tank (13).

3. An anti-interference privacy film, which uses a three-coating machine described in any one of claims 1-2, includes a base layer (1), a triangular prism layer (2), and a privacy protection structure layer (3), and is characterized in that: A triangular prism layer (2) is arranged on the surface of the base layer (1), and an anti-peeping structure layer (3) is arranged on the surface of the triangular prism layer (2). A black glue layer (4) is filled between the anti-peeping structure layers (3).

4. The anti-interference privacy film according to claim 3, wherein: The base layer (1) is any one of PET, PC, PU, TPU, TPH, and PVC.

5. The anti-interference privacy film according to claim 3, characterized in that: The triangular prism layer (2) is in a colloidal state, with a Pitch of 35 - 45um; an angle of 70 - 110°; and a height of 10 - 30um.

6. The anti-interference privacy film according to claim 3, characterized in that: The anti-peeping structure layer (3) is a trapezoidal prism of a micron-level grating, and the anti-peeping structure layer (3) is in a colloidal state, with a Pitch of 22 - 42um; an angle of 1.5 - 4.5°; and a height of 20 - 90um.

Images