Liquid silica gel coating system

Abstract

The utility model discloses a liquid silica gel coating system which comprises a base material unwinding unit, a coating calendering unit, a heating vulcanization unit and a product winding unit, the base material unwinding unit comprises a base material unwinding roller, the coating calendering unit comprises a base material calendering roller, the heating vulcanization unit comprises a drying oven, and the product winding unit comprises a membrane material winding roller. The whole production line comprises the base material unwinding unit, the coating and calendering unit, the heating and vulcanizing unit and the product winding unit, the process is simple, the coating is uniform, the thickness consistency is good, the product can be quickly cured after being treated by the drying oven, and the yield is effectively improved; various chemicals such as diluents, fillers and auxiliaries do not need to be added step by step and then stirred and dispersed, coating liquid prepared from produced base materials and sizing materials does not generate any volatile organic compounds, waste water and waste liquid when passing through each processing unit, environment-friendly treatment devices such as an air suction cover and a waste gas filtering device do not need to be used, energy consumption is effectively saved, and the production cost is reduced. The production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to silica gel coating equipment technical field, concretely relates to a liquid silicone coating system. BACKGROUND

[0002] Liquid silicone is a kind of material with good fluidity, fast vulcanization, non-toxic and odorless, safe and environmentally friendly, and the product after forming has high resilience, tear resistance, wear resistance, scratch resistance, yellowing resistance, aging resistance, heat resistance and other properties. Liquid silicone is mainly used for trademark accessories in the garment industry. There are various coating methods (through coating technology, first prepare a wide silicone lettering film roll, then cooperate with laser machine, lettering machine and other processing into the required pattern) and coating composite equipment (such as comma doctor blade, round knife, gravure roll, anilox roll, wire bar, slit, etc.) in the current coating industry. The product can be applied to plastic film, paper, cloth, leather, hot melt adhesive film and other various substrates. Different substrates, adhesives, base materials and other carriers will have different detailed requirements for coating process, such as coating head, oven, composite roller, etc.

[0003] The existing coating process glue formula is relatively complex, and by-products and small molecules are easily produced during vulcanization process, the volume shrinkage rate is large, the vulcanization speed is slow, and it is not easy to form. It needs multiple steps to control the uniformity of coating, and needs to gradually add diluent, filler and various chemicals such as auxiliary agent for stirring and dispersion. Through the treatment of exhaust hood, waste gas filtration and other environmental protection treatment devices, the dispersed pollutants are treated, so that the product uniformity is poor, the processing time is long, and the processing cost is high. INVENTION CONTENTS

[0004] The utility model discloses a liquid silicone coating system.

[0005] The utility model discloses a liquid silicone coating system.

[0006] The base material unwinding unit includes a base material unwinding roller, and the base material unwinding unit is used for unwinding cover film base material and bottom film base material.

[0007] The coating and calendering unit includes a base material calendering roller, and the coating and calendering unit is used for calendering the cover film base material and the bottom film base material after conveying the coating liquid to the bottom film base material.

[0008] The heating and vulcanization unit includes an oven, and the heating and vulcanization unit is used for vulcanizing and forming the calendered film material.

[0009] The product winding unit includes a film material winding roller and a film material stripping roller, and the product winding unit is used for winding the formed film material.

[0010] There is a common tangent between the substrate unwinding roller, the substrate calendering roller, the film winding roller, and the film peeling roller.

[0011] As a further description of the above technical solution, the substrate unwinding roller includes a cover film unwinding roller and a bottom film unwinding roller that are offset or aligned. The radial coverage areas of the substrate unwinding roller and the substrate calendering roller intersect. The cover film unwinding roller is offset or aligned above the substrate calendering roller, and the bottom film unwinding roller is offset or aligned to the side of the substrate calendering roller. The tangent direction at the tangent point of the cover film unwinding roller, the bottom film unwinding roller, and the substrate calendering roller is consistent with the film conveying direction.

[0012] As a further description of the above technical solution, the substrate calendering roll includes a cover film calendering roll and a bottom film calendering roll that are offset or aligned. The substrate calendering roll is symmetrically arranged below the cover film unwinding roll, and the tangent direction at the tangent point of the substrate calendering roll, the cover film calendering roll, and the bottom film calendering roll is consistent with the film conveying direction.

[0013] As a further description of the above technical solution, a coating liquid conveying head is offset or aligned on one side of the cover film calendering roller, and the coating liquid conveying head is used to convey coating liquid.

[0014] A glue tank baffle is offset or aligned below the side of the coating liquid delivery head, and the glue tank baffle guides the coating liquid to be applied to the substrate.

[0015] As a further description of the above technical solution, a thickness gauge is provided on the other side of the cover film calendering roller, which is offset or aligned with the thickness gauge and is used to measure the thickness of the calendered film.

[0016] As a further description of the above technical solution, the oven is offset or aligned with one side of the substrate calendering roll, and a baking tunnel is provided inside the oven. The oven is used for vulcanization molding of the film material.

[0017] A fan is offset or aligned with the top of the oven, and the fan is used to circulate hot air.

[0018] As a further description of the above technical solution, the film winding roller is offset or aligned on one side of the oven, and a film peeling roller is offset or aligned above one side of the film winding roller. The film peeling roller is used to peel off the release film and protect the film. The radial coverage areas of the substrate calendering roller, the film winding roller and the film peeling roller intersect.

[0019] As a further description of the above technical solution, a first guide roller is offset or aligned between the substrate unwinding roller and the substrate calendering roller, a second guide roller is offset or aligned between the substrate calendering roller and the film peeling roller, and a third guide roller is offset or aligned between the film peeling roller and the film winding roller. The radial coverage areas of the substrate calendering roller, the first guide roller, the second guide roller and the third guide roller intersect.

[0020] As a further description of the above technical solution, the substrate unwinding roller, the substrate calendering roller, the film peeling roller, the film winding roller, the first guide roller, the second guide roller, and the third guide roller are respectively provided with film winding areas, the two sides of the film winding area are leakage areas, and the width of the film winding area is 40%-80% of the total width of the film winding area and the leakage area.

[0021] As a further description of the above technical solution, the midpoints of the central axes of the film winding areas corresponding to the substrate unwinding roller, the substrate calendering roller, the film peeling roller, the film winding roller, the first guide roller, the second guide roller, and the third guide roller are coplanar.

[0022] The beneficial effects of this utility model are as follows:

[0023] 1. This utility model, the entire production line includes a substrate unwinding unit, a coating and calendering unit, a heating and vulcanizing unit and a product winding unit. The process is simple, the coating is uniform and the thickness is consistent. Moreover, the product can be quickly cured after being treated in the oven. There is no need to control parameters such as post-curing and internal stress through process parameters, which effectively improves the yield.

[0024] 2. This utility model does not require the gradual addition of various chemicals such as diluents, fillers, and additives for stirring and dispersion. Furthermore, the coating liquid prepared from the substrate and adhesive produced will not generate any volatile organic compounds, wastewater, or waste liquid when passing through each processing unit. It eliminates the need for environmental protection treatment devices such as exhaust hoods and exhaust gas filters, effectively saving energy and reducing production costs.

[0025] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the liquid silicone coating system of this utility model. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the liquid silicone coating system of this utility model. Figure 2 ;

[0028] Figure 3This is a schematic diagram of the roller layout of the liquid silicone coating system of this utility model. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the roller layout of the liquid silicone coating system of this utility model. Figure 2 .

[0030] Figure label:

[0031] 1. Substrate unwinding unit; 11. Substrate unwinding roller; 111. Cover film unwinding roller; 112. Bottom film unwinding roller; 2. Coating calendering unit; 21. Substrate calendering roller; 211. Cover film calendering roller; 212. Bottom film calendering roller; 22. Coating liquid conveying head; 23. Adhesive tank baffle; 24. Thickness gauge; 3. Heating and vulcanizing unit; 31. Oven; 311. Baking tunnel; 32. Fan; 4. Product winding unit; 41. Film winding roller; 42. Film peeling roller; 5. First guide roller; 6. Second guide roller; 7. Third guide roller; 8. Film winding area; 9. Extrusion area. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0033] like Figure 4 - Figure 1 As shown, in one embodiment, a liquid silicone coating system includes: a substrate unwinding unit 1, a coating calendering unit 2, a heating and vulcanizing unit 3, and a product winding unit 4 arranged sequentially.

[0034] The substrate unwinding unit 1 is used to unwind the cover film substrate and the bottom film substrate, so that they are stably and flatly fed into the next process unit; the coating and calendering unit 2 is used to calender the cover film substrate and the bottom film substrate by conveying the coating liquid prepared with liquid silicone as the adhesive onto the bottom film substrate; the heating and vulcanizing unit 3 is used to vulcanize and shape the calendered film material; and the product winding unit 4 is used to wind up the shaped film material product.

[0035] It should be explained in detail that there is a common tangent between each conveying roller, so that film materials of the same width can be smoothly conveyed along the tangent direction of the roller rotation. After being coated with a coating liquid of the same width, they are calendered, heated and vulcanized, and finally wound up uniformly.

[0036] Please continue reading. Figure 2 - Figure 1In this embodiment, the substrate unwinding unit 1 includes a substrate unwinding roller 11, which includes a cover film unwinding roller 111 and a bottom film unwinding roller 112 that are offset or aligned. The radial coverage areas of the substrate unwinding roller 11 and the substrate calendering roller 21 partially overlap, so that the film unwound by the substrate unwinding roller 11 can be smoothly transported onto the substrate calendering roller 21.

[0037] Specifically, the cover film unwinding roller 111 is offset or aligned above the substrate calendering roller 21, while the bottom film unwinding roller 112 is arranged parallel to the side of the substrate calendering roller 21. The tangent direction at the tangent point of the cover film unwinding roller 111, the bottom film unwinding roller 112, and the substrate calendering roller 21 is consistent with the film conveying direction. During processing, the cover film substrate is unwound into the feeding platform through the cover film unwinding roller 111, while the bottom film substrate is unwound through the bottom film unwinding roller 112. Subsequently, coating and calendering are performed in the coating calendering unit 2.

[0038] Please continue reading. Figure 2 - Figure 2 In this embodiment, the coating calendering unit 2 includes a substrate calendering roller 21, which is symmetrically arranged below the cover film unwinding roller 111.

[0039] Specifically, the substrate calendering roller 21 includes a cover film calendering roller 211 and a bottom film calendering roller 212 that are offset or aligned, used to calender the cover film substrate and the bottom film substrate with coating liquid attached. The tangent direction at the tangent point of the substrate calendering roller 21, the cover film calendering roller 211 and the bottom film calendering roller 212 is consistent with the film material conveying direction, so that the bottom film substrate with coating liquid attached can be bonded together with the cover film substrate for calendering.

[0040] Furthermore, a coating liquid conveying head 22 is offset or aligned on one side of the cover film calendering roller 211 for conveying the prepared coating liquid containing silicone; and a glue tank baffle 23 is offset or aligned below the side of the coating liquid conveying head 22 to guide the coating liquid to be coated onto the base film substrate.

[0041] Furthermore, a thickness gauge 24 is offset or aligned on the other side of the substrate calendering roll 21 to measure the thickness of the calendered film and adjust the gap of the calendering roll according to the test thickness, thereby adjusting the thickness of the calendered film.

[0042] Please continue reading. Figures 1-2 Taking silicone lettering film as an example, material A is a TPU cover film hot melt adhesive film, which is smoothly unwound and conveyed by the cover film unwinding roller 111; material B is a bottom film PET release film, which is smoothly unwound and conveyed by the bottom film unwinding roller 112. After the coating liquid is prepared by using liquid silicone as the main agent, it is conveyed from the coating liquid conveying head 22 to the glue tank baffle 23 and gradually coated onto the bottom film substrate.

[0043] Specifically, the PET base film substrate is guided from the base film unwinding roller 112 by the first guide roller 5 and then passes through the horizontal feeding platform. The coating liquid enters the glue tank baffle 23 in front of the calendering roller through the coating liquid conveying head 22, and after contacting the PET base film substrate, it moves with the production speed V of the platform. 车速 As the TPU cover film substrate moves and enters the gap between the calendering rollers, it is simultaneously unwound and guided by the first guide roller 5, then meets the upper part at a set speed V. 转 The rotating substrate calendering rolls 21 are tangential to each other and enter the gap between the substrate calendering rolls 21 as the rolls rotate. Since there is enough rubber in the rubber tank, assuming the maximum thickness of the material entering the roll gap is h1, the thickness of the rubber after calendering is h2. Then, the rubber with a thickness of h2 sandwiched between the upper and lower films enters the heating and vulcanizing unit 3 along with the conveyor belt for vulcanization molding. During this process, the thickness of the calendered film is measured by the thickness gauge 24, and the gap of the calendering rolls is adjusted according to the measured thickness, thereby adjusting the thickness of the calendered film.

[0044] It should be noted in detail that the main component of the rubber compound is a two-component addition-curing liquid silica gel (LSR), which is non-toxic, odorless, and extremely stable in storage and environmental adaptability. It does not produce byproducts or release small molecules during vulcanization and has advantages such as low volume shrinkage, fast vulcanization speed, and easy molding. Because the compound's formulation is relatively simple, there is no need to add diluents, fillers, additives, or other chemicals, which not only reduces the burden on operators but also lowers the requirements for stirring and dispersion.

[0045] It is understandable that the liquid silicone used in this application has a solid content of >99%, and its matching curing agent and color paste also have a solid content of >99%. The entire formula contains no organic solvents or volatile silicone oil diluents. Therefore, from the perspective of raw material formulation, it belongs to solvent-free lamination: Solvent-free lamination uses 100% solid content adhesives to bond film-like substrates together. Through high temperature and high pressure, the adhesives undergo cross-linking and curing, and the two sides are firmly bonded together by chemical reaction to form a composite film material, also known as reactive lamination. Its most significant advantage is that the entire production line does not generate any volatile organic compounds, wastewater, or waste liquid, making it a highly efficient and environmentally friendly coating method.

[0046] In addition, wet lamination, also known as wet lamination, involves coating a layer of adhesive on the surface of the first substrate (i.e., the PET base film substrate in this application), and then immediately pressing and bonding it with the second substrate (i.e., the TPU cover film substrate in this application) through calendering rollers while the coating is still wet. Then, the solvent is dried and cured by heating and vulcanizing unit 3, thereby bonding the two substrates together to create a strong bond. From the coating station of the production line, the PET base film substrate is smoothly unwound and conveyed from below by the base film unwinding roller 112. The glue tank baffle 23 is set on the platform after the lower film is unwound. As it gradually enters the gap between the calendering rollers, the glue has already contacted the base film substrate and spread and conveyed over a short distance. The TPU cover film substrate is smoothly unwound and conveyed by the cover film unwinding roller 111. After passing the first guide roller 5, it directly enters the gap between the calendering rollers tangentially. The thickness of the wet glue is controlled by adjusting the gap between the calendering rollers. The rotation speed of the calendering rollers needs to match the production conveying speed. After leaving the lower cutting point, the glue enters the heating and vulcanizing unit 3 together with the sheet speed of the upper and lower film materials for vulcanization and molding.

[0047] In addition, the function of the calendering roll is to extrude the rubber material, causing it to stretch and deform as it passes through the gap between the rolls, thus producing the required thickness. This process requires the strong shearing force between the rolls and can be combined with appropriate processing temperatures to subject the viscous material to repeated extrusion and stretching, ultimately resulting in a sheet product with the required width and thickness. The materials suitable for the calendering process can be solid, semi-solid paste, viscous liquid, etc. In the production line of this application, the calendering roll at position 22 of the coating liquid conveying head has a gap during operation. The two calendering rolls rotate in the same direction as the sheet path, which plays a role in driving, extruding, and stretching the rubber material, and controlling the thickness of the wet rubber. Since the raw material liquid silicone has a large viscosity, it is different from the heated calendering of rubber, metal, etc. without a support film. It belongs to a two-roll calendering process with a support film at room temperature.

[0048] Please continue reading. Figures 1-2 In this embodiment, the heating and vulcanizing unit 3 includes an oven 31, which is offset or aligned with one side of the substrate calendering roll 21, and the oven 31 is provided with a baking tunnel 311 for vulcanizing and forming the film material; a fan 32 is also offset or aligned with the top of the oven 31 for hot air circulation. At high temperature, the liquid silicone in the coating liquid will quickly vulcanize and react, and produce good interfacial adhesion to the film materials on both sides.

[0049] Please continue reading. Figures 3-4 In this embodiment, the product winding unit 4 includes a film winding roller 41, which is offset or aligned on one side of the oven (31); and the film winding roller 41 adopts a dual-axis setting scheme, which can quickly switch between winding and subsequent processes such as cutting and slitting, and effectively reduce winding downtime.

[0050] Specifically, a film peeling roller 42 is offset or aligned above one side of the film winding roller 41 for peeling off the release film and protecting the film. The radial coverage areas of the substrate calendering roller 21, the film winding roller 41 and the film peeling roller 42 intersect, so that the vulcanized film can be smoothly wound up after the release film is peeled off.

[0051] It should be explained in detail that a first guide roller 5 is offset or aligned between the substrate unwinding roller 11 and the substrate calendering roller 21, a second guide roller 6 is offset or aligned between the substrate calendering roller 21 and the film peeling roller 42, and a third guide roller 7 is offset or aligned between the film peeling roller 42 and the film winding roller 41. The radial coverage areas of the substrate calendering roller 21, the first guide roller 5, the second guide roller 6 and the third guide roller 7 intersect, which can guide different film materials to be unwound and conveyed smoothly along the rotation tangent direction of the rollers.

[0052] Please continue reading. ​ In this embodiment, the substrate unwinding roller 11, the substrate calendering roller 21, the film peeling roller 42, the film take-up roller 41, the first guide roller 5, the second guide roller 6, and the third guide roller 7 are each provided with a film winding area 8, and the two sides of the film winding area 8 of each roller are respectively provided with a leakage area 9. Specifically, the width of the film winding area 8 is 40%-80% of the total width of the film winding area 8 and the leakage area 9.

[0053] It is understood that the central axes of the substrate unwinding roller 11, substrate calendering roller 21, film peeling roller 42, film winding roller 41, first guide roller 5, second guide roller 6, and third guide roller 7 can be staggered by a certain distance (i.e., the layout is offset) or aligned (i.e., the layout is aligned, preferably aligned); when the layout is aligned, the midpoints of the central axes of the film winding area 8 corresponding to each roller are coplanar.

[0054] Working principle: The PET base film substrate is guided from the base film unwinding roller 112 by the first guide roller 5 and then passes through the horizontal feeding platform. The coating liquid enters the glue tank baffle 23 in front of the calendering roller through the coating liquid conveying head 22, and after contacting the PET base film substrate, it moves with the production speed V of the platform. 车速 As the TPU cover film substrate moves and enters the gap between the calendering rollers, it is simultaneously unwound and guided by the first guide roller 5, then meets the upper part at a set speed V. 转The rotating substrate calendering roller 21 is tangential to the substrate calendering roller 21 and enters the gap between the substrate calendering rollers 21 as the rollers rotate. Since there is enough rubber in the rubber tank, the maximum thickness of the material entering the roller gap is h1, and the thickness of the rubber after calendering is h2. Then, the rubber with a thickness of h2 sandwiched between the upper and lower films enters the baking tunnel 311 inside the oven 31 along with the conveyor belt. At high temperature, the liquid silicone rapidly vulcanizes and reacts, producing good interfacial adhesion to the films on both sides. Then, the release film and protective film are peeled off by the film peeling roller 42 and then wound up by the film winding roller 41.

[0055] Through the above technical solution, the membrane material produced by the production line of this application has a simple process, uniform coating, and good thickness consistency. The product can be quickly cured after being treated in oven 31, without the need to control parameters such as post-curing and internal stress through process parameters, which effectively improves the yield. It does not require the gradual addition of various chemicals such as diluents, fillers and additives for stirring and dispersion. Moreover, the coating liquid prepared by the substrate and adhesive will not generate any volatile organic compounds, wastewater and waste liquid when passing through each processing unit. There is no need to use environmental protection treatment devices such as exhaust hoods and exhaust gas filters, which effectively saves energy consumption and reduces production costs.

[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid silicone coating system, characterized in that, include: The substrate unwinding unit (1), coating and calendering unit (2), heating and vulcanizing unit (3) and product winding unit (4) are arranged in sequence. The substrate unwinding unit (1) includes a substrate unwinding roller (11), and the substrate unwinding unit (1) is used to unwind the cover film substrate and the bottom film substrate; The coating calendering unit (2) includes a substrate calendering roller (21). The coating calendering unit (2) is used to calender the cover film substrate and the bottom film substrate after conveying the coating liquid onto the bottom film substrate. The heating vulcanization unit (3) includes an oven (31), and the heating vulcanization unit (3) is used to vulcanize and shape the calendered film material; The product winding unit (4) includes a film winding roller (41) and a film peeling roller (42), and the product winding unit (4) is used to wind up the formed film. There is a common tangent between the substrate unwinding roller (11), the substrate calendering roller (21), the film winding roller (41), and the film peeling roller (42).

2. The liquid silicone coating system according to claim 1, characterized in that, The substrate unwinding roller (11) includes a cover film unwinding roller (111) and a bottom film unwinding roller (112) that are offset or aligned. The radial coverage areas of the substrate unwinding roller (111) and the substrate calendering roller (21) intersect. The cover film unwinding roller (111) is offset or aligned above the substrate calendering roller (21), and the bottom film unwinding roller (112) is offset or aligned to the side of the substrate calendering roller (21). The tangent direction at the tangent point of the cover film unwinding roller (111), the bottom film unwinding roller (112), and the substrate calendering roller (21) is consistent with the film conveying direction.

3. The liquid silicone coating system according to claim 1, characterized in that, The substrate calendering roller (21) includes a cover film calendering roller (211) and a bottom film calendering roller (212) that are offset or aligned. The substrate calendering roller (21) is symmetrically arranged below the cover film unwinding roller (111). The tangent direction at the tangent point of the substrate calendering roller (21), the cover film calendering roller (211), and the bottom film calendering roller (212) is consistent with the film conveying direction.

4. The liquid silicone coating system according to claim 3, characterized in that, The coating liquid conveying head (22) is offset or aligned on one side of the cover film calendering roller (211), and the coating liquid conveying head (22) is used to convey coating liquid; A glue tank baffle (23) is offset or aligned below the side of the coating liquid delivery head (22), and the glue tank baffle (23) guides the coating liquid to be coated onto the substrate.

5. The liquid silicone coating system according to claim 4, characterized in that, A thickness gauge (24) is offset or aligned on the other side of the calendering roller (211) for measuring the thickness of the calendered film.

6. The liquid silicone coating system according to claim 1, characterized in that, The oven (31) is offset or aligned with one side of the substrate calendering roll (21), and the oven (31) is provided with a baking tunnel (311) inside. The oven (31) is used for vulcanization molding of film material. The oven (31) is provided with a fan (32) offset or aligned at the top, and the fan (32) is used for hot air circulation.

7. The liquid silicone coating system according to claim 1, characterized in that, The film take-up roller (41) is offset or aligned on one side of the oven (31), and a film peeling roller (42) is offset or aligned above one side of the film take-up roller (41). The film peeling roller (42) is used to peel off the release film and the protective film. The radial coverage areas of the substrate calendering roller (21), the film take-up roller (41) and the film peeling roller (42) intersect.

8. The liquid silicone coating system according to claim 1, characterized in that, A first guide roller (5) is offset or aligned between the substrate unwinding roller (11) and the substrate calendering roller (21). A second guide roller (6) is offset or aligned between the substrate calendering roller (21) and the film peeling roller (42). A third guide roller (7) is offset or aligned between the film peeling roller (42) and the film winding roller (41). The radial coverage areas of the substrate calendering roller (21), the first guide roller (5), the second guide roller (6), and the third guide roller (7) intersect.

9. The liquid silicone coating system according to claim 8, characterized in that, The substrate unwinding roller (11), the substrate calendering roller (21), the film peeling roller (42), the film winding roller (41), the first guide roller (5), the second guide roller (6), and the third guide roller (7) are respectively provided with film winding areas (8). The two sides of the film winding area (8) are the leakage areas (9). The width of the film winding area (8) is 40%-80% of the total width of the film winding area (8) and the leakage area (9).

10. The liquid silicone coating system according to claim 9, characterized in that, The midpoints of the central axes of the film winding areas (8) corresponding to the substrate unwinding roller (11), the substrate calendering roller (21), the film peeling roller (42), the film winding roller (41), the first guide roller (5), the second guide roller (6), and the third guide roller (7) are coplanar.

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