Double-sided coating forming method for ultrathin flexible glass

Abstract

The invention discloses a double-sided coating forming method for ultrathin flexible glass. The method comprises the following steps: S1, controlling slurry to drop onto a first conveying device below through a magnetic valve; s2, the glass substrate moves downwards to the position between the two first conveying devices, and the slurry on the two first conveying devices is attached to the two surfaces of the glass substrate; s3, the glass substrate is pre-cured by a pre-curing device; and S4, baking the pre-cured glass substrate. According to the double-sided coating forming method for the ultrathin flexible glass, a double-sided gluing one-time forming mode is adopted, so that the processing procedure can be shortened, the production efficiency can be improved, and the cost is relatively low.

Description

Technical Field

[0001] The invention belongs to the technical field of ultra-thin flexible glass, and in particular to a method for double-sided coating and molding of ultra-thin flexible glass. Background Art

[0002] Ultra-thin flexible glass (UTG) has the characteristics of ultra-thinness, wear resistance, good light transmittance, high strength, bendability, and good resilience, and is considered to be an important development direction for flexible folding materials in new display applications. The status of ultra-thin flexible glass cover plates in the new display industry is gradually improving, and the demand for innovative and accelerated products in the mobile phone folding screen track is also increasing. At the same time, the production and processing technology of ultra-thin flexible glass has also become a focus of attention in the industry.

[0003] Due to the rapid development of flexible displays in recent years, the coating methods in the display industry have not kept up with the pace of development and are still using the original coating methods for substrates such as film and paper. As the materials used in flexible displays are gradually changing from CPI (polyimide film) to glass displays, the coating methods that match them also need innovation and reform.

[0004] The existing coating methods for ultra-thin flexible glass are mainly divided into scraping, spin coating, and spray coating. The above three methods are single-sided coating methods, and it is impossible to achieve double-sided coating in one go. It is necessary to coat one side with glue and then repeat the processing, which has a long processing cycle, low production efficiency, and high cost. Since many coating materials have different fluidity, viscosity and curing conditions, double-sided coating and curing have become difficult. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a method for double-sided coating and molding of ultra-thin flexible glass, the purpose of which is to improve production efficiency.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: a method for double-sided coating and molding of ultra-thin flexible glass, comprising the steps of:

[0007] S1, controlling the slurry to drip onto the first conveying device below through a magnetic valve;

[0008] S2, the glass substrate moves downward to between the two first conveying devices, and the slurry on the two first conveying devices adheres to the two surfaces of the glass substrate;

[0009] S3, a pre-curing device pre-cures the glass substrate;

[0010] S4, baking the pre-cured glass substrate.

[0011] In the step S1, the two first conveying devices are arranged obliquely, and the two first conveying devices are distributed in a V shape.

[0012] In the step S1, the first conveying device is a belt transmission mechanism, and a hydrophobic coating is provided on the surface of the conveyor belt of the first conveying device.

[0013] In the step S1, the distance between the two first conveying devices is adjustable.

[0014] A partition is arranged between the pre-curing device and the first conveying device.

[0015] The pre-curing device comprises a strong light contrast light source, a plurality of groups of the strong light contrast light sources are provided and all the strong light contrast light sources are arranged in two rows. In the step S3, the glass substrate passes between the two rows of strong light contrast light sources.

[0016] The partition is arranged between each of the first conveying devices and a row of the strong light contrast light sources.

[0017] In the step S4, the pre-cured glass substrate is transported to the oven by a second conveying device, and the second conveying device is located below the pre-curing device.

[0018] Two magnetic pumps are provided.

[0019] The method for double-sided coating and molding of ultra-thin flexible glass of the present invention adopts a double-sided coating and one-time molding mode, which can shorten the processing steps, improve production efficiency, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] This specification includes the following drawings, which show the following contents:

[0021] Figure 1 It is a schematic diagram of the equipment structure used in the method for double-sided coating and molding of ultra-thin flexible glass of the present invention;

[0022] The markings in the figure are: 1. glass substrate; 2. magnetic pump; 3. slurry; 4. first conveying device; 5. partition; 6. strong light reference light source; 7. second conveying device. DETAILED DESCRIPTION

[0023] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0024] It should be noted that, in the following embodiments, the “first” and “second” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequential order of execution, but are merely for the convenience of description.

[0025] like Figure 1As shown, the present invention provides a method for double-sided coating and molding of ultra-thin flexible glass, comprising the following steps:

[0026] S1, controlling the slurry 3 to drip onto the first conveying device 4 below through the magnetic valve;

[0027] S2, the glass substrate 1 moves downward in a vertical state to between the two first conveying devices 4, and the slurry 3 on the two first conveying devices 4 adheres to the two surfaces of the glass substrate 1;

[0028] S3, a pre-curing device pre-cures the glass substrate 1;

[0029] S4, baking the pre-cured glass substrate 1.

[0030] Specifically, if Figure 1 As shown, in the above step S1, the two first conveying devices 4 are inclined and arranged in a V-shape. The glass substrate 1 is a processed material, and the slurry 3 is controlled to drip through a magnetic valve.

[0031] like Figure 1 As shown, two magnetic pumps 2 are provided, each magnetic pump 2 is located above a first conveying device 4, and the slurry 3 is controlled to drip onto the first conveying device 4 below by a magnetic valve.

[0032] The dripping of the slurry 3 is controlled by the magnetic pump 2, and the magnetic pump 2 has no leakage risk and effectively avoids leakage of the slurry 3 during the transportation process. The magnetic pump 2 has low energy consumption, high efficiency and simple structure. The pump, magnetic sensor and motor are all separate parts, which are easy to repair and have low maintenance costs.

[0033] In the above step S1, the first conveyor 4 is a belt transmission mechanism. The slurry 3 is controlled by the magnetic valve to drip onto the conveyor belt below. The slurry 3 slides to the bottom of the conveyor belt under the influence of its own gravity. When the glass substrate 1 moves downward, the slurry 3 on the conveyor belts on both sides adheres to the two opposite surfaces of the glass substrate 1, so that a coating is formed on the surface of the glass substrate 1. The surface of the conveyor belt of the first conveyor 4 is provided with a hydrophobic coating, and the material of the hydrophobic coating is a hydrophobic material, so there is no need to worry about the slurry 3 adhering to the conveyor device to cause adhesion, agglomeration, etc.

[0034] In the above step S1, the distance between the two first conveying devices 4 is adjustable. The lower ends of the conveyor belts of the two first conveying devices 4 are at the same height. By adjusting the distance between the lower ends of the conveyor belts of the two first conveying devices 4, the thickness of the slurry 3 attached to the surface of the glass substrate 1 can be controlled, and the adjustment is convenient and simple and easy to implement.

[0035] like Figure 1As shown, a partition 5 is arranged between the pre-curing device and the first conveying device 4, and the partition 5 is arranged horizontally. The pre-curing device includes a strong light contrast light source 6, and a plurality of groups of strong light contrast light sources 6 are arranged and all of the strong light contrast light sources 6 are arranged in two rows. In the above step S3, the glass substrate 1 passes through the two partitions 5 in a vertical state, and then passes downward between the two rows of strong light contrast light sources 6. The two rows of strong light contrast light sources 6 that are lit irradiate the slurry 3 attached to the two surfaces of the glass substrate 1 at the same time to achieve pre-curing, and prevent the slurry 3 from being too sparse and dripping and failing to form an ideal thickness. Such a situation can be effectively avoided by curing with a strong light source.

[0036] like Figure 1 As shown, a partition 5 is provided between each first conveying device 4 and a row of strong light contrast light sources 6. The partition 5 is provided for isolation to prevent the slurry 3 from being solidified when the upper layer is not adhered due to the irradiation of the lower light source.

[0037] The surface of the pre-cured slurry 3 is hardened and has no fluidity. In this way, the double-sided adhesive layer laminated glass as a whole can continue to move downward to the second conveyor 7 below. In the above step S4, the pre-cured glass substrate 1 is transported to the oven by the second conveyor 7 for high-temperature baking. The second conveyor 7 is located below the pre-curing device. The pre-cured glass substrate 1 can be produced in the next stage after being baked at high temperature in the oven.

[0038] The above-mentioned method for double-sided coating of ultra-thin flexible glass has the following advantages:

[0039] 1. The overall method of double-sided gluing and one-time molding is adopted, which fills the gap that the current process cannot form both sides at one time, and provides ideas for subsequent optimization of the coating process;

[0040] 2. The overall structure of the equipment used is simple, easy to disassemble and assemble, with low failure rate and low subsequent maintenance cost;

[0041] 3. The overall automation level is high, the equipment operation is simple, which reduces the dependence on the operator's proficiency and reduces the labor cost;

[0042] 4. The dripping amount of the slurry 3 is controlled by the magnetic pump 2, and the amount used in production is accurately controlled. The magnetic pump 2 has no leakage risk, low energy consumption and high working efficiency;

[0043] 5. The vertical transportation method avoids the phenomenon that the adhesive layer is thick on one side and thin on the other side due to the influence of gravity during horizontal transportation, ensuring the overall shape of the product;

[0044] 6. The whole device has a high degree of mechanization and low dependence on personnel, which reduces the labor cost, avoids complicated processes and operations, is easy to operate, has low operating costs and is easier to achieve mass production;

[0045] 7. The overall equipment distribution equipment does not interfere with each other. Multiple independent system control is adopted to prevent the modules from interfering with each other in the later production and causing collision.

[0046] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A method for double-sided coating of ultra-thin flexible glass, characterized in that: Includes steps: S1, controlling the slurry to drip onto the first conveying device below through a magnetic valve; S2, the glass substrate moves downward to between the two first conveying devices, and the slurry on the two first conveying devices adheres to the two surfaces of the glass substrate; S3, a pre-curing device pre-cures the glass substrate; S4, baking the pre-cured glass substrate.

2. The method for double-sided coating and molding of ultra-thin flexible glass according to claim 1, characterized in that: In the step S1, the two first conveying devices are arranged obliquely, and the two first conveying devices are distributed in a V shape.

3. The method for double-sided coating and molding of ultra-thin flexible glass according to claim 1, characterized in that: In the step S1, the first conveying device is a belt transmission mechanism, and a hydrophobic coating is provided on the surface of the conveyor belt of the first conveying device.

4. The method for double-sided coating and molding of ultra-thin flexible glass according to any one of claims 1 to 3, characterized in that: In the step S1, the distance between the two first conveying devices is adjustable.

5. The method for double-sided coating and molding of ultra-thin flexible glass according to any one of claims 1 to 3, characterized in that: A partition is arranged between the pre-curing device and the first conveying device.

6. The method for double-sided coating and molding of ultra-thin flexible glass according to claim 5, characterized in that: The pre-curing device comprises a strong light contrast light source, a plurality of groups of the strong light contrast light sources are provided and all the strong light contrast light sources are arranged in two rows. In the step S3, the glass substrate passes between the two rows of strong light contrast light sources.

7. The method for double-sided coating and molding of ultra-thin flexible glass according to claim 5, characterized in that: The partition is arranged between each of the first conveying devices and a row of the strong light contrast light sources.

8. The method for double-sided coating and molding of ultra-thin flexible glass according to any one of claims 1 to 7, characterized in that: In the step S4, the pre-cured glass substrate is transported to the oven by a second conveying device, and the second conveying device is located below the pre-curing device.

9. The method for double-sided coating and molding of ultra-thin flexible glass according to any one of claims 1 to 8, characterized in that: Two magnetic pumps are provided.

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