Cover film forming method and cover body

Abstract

The invention relates to the field of hydrophobic material preparation processes, and provides a cover film forming method and a cover body, the cover film forming method comprises the following steps: coating a substrate with a hydrophobic glue solution, and curing the hydrophobic glue solution to form a hydrophobic coating; respectively acquiring coating parameters in a plurality of acquisition areas of the hydrophobic coating; and the coating parameters are adjusted according to the multiple coating parameters. According to the cover film forming method provided by the invention, when the hydrophobic glue solution is coated on the substrate, the coating parameters of the cured hydrophobic coating are respectively obtained in the plurality of acquisition areas of the hydrophobic coating, and the coating parameters are adjusted according to the plurality of coating parameters, so that the thickness of the coating meets the inspection standard. According to the method, the phenomenon that the thickness of the coating is too large or too small is avoided, the hydrophobicity and the adhesion strength of the cover film are improved, defective products are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydrophobic material preparation technology, and in particular to a cover film forming method and a cover body. Background Art

[0002] In daily use or industrial production, a sealed container is often formed by a box body and a cover body to hold liquid. For example, a plastic box body and a composite cover body can be used to hold yogurt. Due to the special properties of yogurt, it is easy to adhere to the inner wall of the cover body. Therefore, a cover body with hydrophobic properties comes into being.

[0003] The cover body currently used is mainly formed by a hydrophobic coating and a substrate. Specifically, a hydrophobic glue can be attached to the substrate by roller coating, spraying, etc. to form a cover film. However, the above processing technology may cause the thickness of the coating to be too large or too small, reducing the hydrophobic performance or reducing the adhesion strength. Summary of the invention

[0004] The present invention provides a cover film forming method and a cover body, which are used to solve the defects in the prior art that the processing technology may cause the thickness of the coating to be too large or too small, reduce the hydrophobicity or reduce the adhesion strength, thereby avoiding the thickness of the coating to be too large or too small, improving the hydrophobicity and adhesion strength of the cover film, reducing the generation of defective products, and improving production efficiency.

[0005] The present invention provides a method for forming a cover film, comprising:

[0006] Applying a hydrophobic adhesive on a substrate, wherein the hydrophobic adhesive is cured to form a hydrophobic coating;

[0007] Acquiring coating parameters respectively in multiple collection areas of the hydrophobic coating;

[0008] Coating parameters are adjusted based on a plurality of said coating parameters.

[0009] According to the present invention, a method for forming a cover film is provided, wherein the coating parameters are obtained respectively in a plurality of collection areas of the hydrophobic coating, including:

[0010] The surface of the hydrophobic coating is evenly divided into a plurality of collection areas, and the coating parameters collected at any position in each collection area are acquired as the coating parameters corresponding to the collection area.

[0011] According to the present invention, a method for forming a cover film is provided, wherein the coating parameters include coating thickness.

[0012] According to the present invention, a method for forming a cover film is provided, wherein the coating parameters are adjusted according to a plurality of coating parameters, comprising:

[0013] If the coating thickness is greater than or less than a preset thickness range, the coating liquid output is adjusted to ensure that the coating thickness is within the preset thickness range.

[0014] According to the present invention, there is provided a method for forming a cover film, wherein the coating parameters further include coating weight;

[0015] The step of acquiring coating parameters in a plurality of collection areas of the hydrophobic coating respectively further comprises:

[0016] Get coating density;

[0017] Based on the coating thickness and coating density of any of the collection areas, the coating weight is obtained.

[0018] According to the present invention, a method for forming a cover film is provided, wherein the coating parameters are adjusted according to a plurality of coating parameters, comprising:

[0019] If the coating weight is greater than or less than the preset weight range, the coating liquid output is adjusted to ensure that the coating weight is within the preset weight range.

[0020] According to the present invention, a method for forming a cover film is provided, wherein the coating parameters include coating uniformity.

[0021] According to the present invention, a method for forming a cover film is provided, wherein a hydrophobic adhesive is coated on a substrate, and the hydrophobic adhesive is cured to form a hydrophobic coating, comprising:

[0022] Spray the hydrophobic glue on the substrate, wherein the spraying pressure is 0.5MPa-0.9MPa, the feed rate is 0.2mL / min-0.4mL / min, the spraying distance is 22cm-28cm, and the number of spraying times is 5-8 times;

[0023] The hydrophobic adhesive is dried to solidify the hydrophobic adhesive to form a hydrophobic coating, wherein the drying temperature is 70° C.-90° C. and the drying time is 8s-12s.

[0024] According to the present invention, a method for forming a cover film is provided, wherein microstructures arranged in an array are formed on a substrate.

[0025] According to the present invention, there is provided a method for forming a cover film, wherein the components of the hydrophobic glue include: sintered mineral powder;

[0026] The components of the hydrophobic glue also include: at least one of a polymer and a cross-linkable monomer.

[0027] The present invention provides a cover body, comprising a cover film formed by any one of the above-mentioned cover film forming methods.

[0028] The cover film forming method provided by the present invention, while coating the hydrophobic glue on the substrate, obtains coating parameters in multiple collection areas of the hydrophobic coating that has been cured, and adjusts the coating parameters according to the multiple coating parameters so that the thickness of the coating meets the inspection standard. This method avoids the thickness of the coating being too large or too small, improves the hydrophobic performance and adhesion strength of the cover film, reduces the generation of defective products, and improves production efficiency.

[0029] In the cover body provided in the embodiment of the present invention, since the above-mentioned cover film forming method is applied, it also has the above-mentioned advantages, which will not be described in detail here.

[0030] Additional aspects and advantages of the embodiments of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through practice of the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is one of the schematic flow diagrams of the cover film forming method provided by the present invention;

[0033] Figure 2 This is the second schematic flow diagram of the cover film forming method provided by the present invention;

[0034] Figure 3 This is the third flow diagram of the cover film forming method provided by the present invention;

[0035] Figure 4 This is the fourth flow diagram of the cover film forming method provided by the present invention;

[0036] Figure 5 This is the fifth flow diagram of the cover film forming method provided by the present invention;

[0037] Figure 6 This is the sixth flow chart of the cover film forming method provided by the present invention. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0039] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0040] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0041] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0043] Now combined Figures 1 to 6 , various embodiments provided by the present invention are described. It should be understood that the following are merely illustrative embodiments of the present invention and do not constitute any particular limitation to the present invention.

[0044] The embodiment of the present invention provides a method for forming a cover film. Figure 1 This is one of the flow diagrams of the method for forming a cover film provided by the present invention, see Figure 1 The cover film forming method comprises:

[0045] 100. Apply a hydrophobic adhesive on the substrate, and solidify the hydrophobic adhesive to form a hydrophobic coating.

[0046] The hydrophobic glue is usually composed of multiple components and has strong hydrophobic properties. The substrate can be thermoplastics, metals, lipids, etc. The components of thermoplastics can include polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyoxymethylene, polycarbonate, polyamide, acrylic plastics, other polyolefins and their copolymers, polysulfone, polyphenylene ether, etc. Metals can include aluminum plastic films, etc.

[0047] In this step, the hydrophobic glue can be applied to the substrate by a process such as roller coating or spraying, so that the hydrophobic glue can be attached to the substrate and form a hydrophobic coating after curing. After the coating is completed, a hydrophobic coating can be formed after a short time. Further, the curing process can also be accelerated by a process such as heating and drying, while improving the adhesion of the hydrophobic coating.

[0048] The above-mentioned hydrophobic coating and substrate form a cover film, which can be mass-produced, and after passing the automated inspection, the pattern is printed and the steps of cutting and pasting are performed. In the subsequent inspection steps, if the coating parameters do not meet the inspection standards, on the one hand, the coating parameters can be modified in real time, and on the other hand, the coating in the collection area needs to be further processed to make it meet the inspection standards. Of course, the coating can also be subjected to the following tests: viscous liquid adhesion surface effect difference test, surface mechanical property test, hardness test, wear resistance test, hydrophobic angle test, yogurt rolling parts test, oleophobic angle test, etc., to further test the adhesion of the coating, etc.

[0049] 200. Obtain coating parameters in multiple collection areas of the hydrophobic coating respectively.

[0050] Among them, on the cover film, the hydrophobic coating is divided into multiple collection areas, and tests are performed in each collection area to obtain the coating parameters.

[0051] Specifically, the collection areas may be divided into dot matrix structures or according to the size of the areas, as long as the areas of the various collection areas are the same, and this embodiment does not limit this. It should be noted that in any collection area, it may be set to collect at a corresponding position, for example, it may be collected at the center of any collection area; it may also be collected at any position in the collection area, and this embodiment does not limit this.

[0052] 300. Adjust coating parameters according to multiple coating parameters.

[0053] In this step, the coating parameters can be compared with the preset target coating parameter range. If the coating parameters are within the preset target coating parameter range, it means that the hydrophobic coating meets the inspection standards, that is, it meets the production requirements. If the coating parameters do not preset the target coating parameter range, it means that the hydrophobic coating does not meet the inspection standards, and the coating parameters in the subsequent production need to be adjusted so that the coating produced subsequently meets the inspection standards. Moreover, the hydrophobic coating inspected this time also needs to be further processed so that it also meets the inspection standards.

[0054] In the roller coating process, the coating parameters include: the adjustment parameters of the roller coating adjustment plate, the number of roller coating times, etc. In the spray coating process, the coating parameters include: spraying air pressure, feed amount, spraying distance and spraying times, etc.

[0055] Since the formation time of the hydrophobic coating in step 100 is relatively short, for example, it can be 8s-12s, and during the processing, the cover film can be moved in the length direction, therefore, the detection device in the detection step 200 can be added after the cover film production process in step 100 on the automated production line. That is to say, although for the same collection area, steps 200 and 300 are performed a certain time after step 100. However, on the whole, steps 200 and 300 are performed simultaneously with the cover film production process in step 100, so that the thickness of the coating meets the inspection standard, avoids the thickness of the coating being too large or too small, and also improves the hydrophobic performance and adhesion strength of the cover film. Moreover, there is no need to produce a batch of products and then conduct corresponding inspections, which avoids the time wasted waiting and the waste of rework of the entire batch of products, reduces the production of defective products, and improves production efficiency.

[0056] The cover film forming method provided by the present invention, while coating the hydrophobic glue on the substrate, obtains coating parameters in multiple collection areas of the hydrophobic coating that has been cured, and adjusts the coating parameters according to the multiple coating parameters so that the thickness of the coating meets the inspection standard. This method avoids the thickness of the coating being too large or too small, improves the hydrophobic performance and adhesion strength of the cover film, reduces the generation of defective products, and improves production efficiency.

[0057] It should be noted that the cover film formed by the above-mentioned cover film forming method has the characteristics of good hydrophobicity and high stability, and is suitable as a yogurt cover, etc.

[0058] Figure 2 This is the second flow diagram of the cover film forming method provided by the present invention, please refer to Figure 2 In one embodiment provided by the present invention, step 200 includes:

[0059] 210. Divide the surface of the hydrophobic coating into a plurality of collection areas on an even basis, and obtain the coating parameters collected at any position in each collection area as the coating parameters corresponding to the collection area.

[0060] The above average division means: according to the width of the hydrophobic coating, the width is evenly divided into the widths of multiple collection areas. The coating parameters at any position in each of the above collection areas can represent the actual situation of the collection area. Of course, the area of ​​the collection area can be set as needed, and this embodiment does not limit this. On the basis of ensuring the collection accuracy, the collection workload is relatively low. For example, the area of ​​the collection area can be 1mm 2 -5mm 2 .

[0061] For example, a hydrophobic coating can be divided into multiple square collection areas in a dot matrix arrangement, and tests can be performed separately in each collection area. Specifically, the cover film can be moved along the length direction during the processing, so it can be divided into multiple collection areas along the length and width directions, that is, a row of collection areas can be formed in the width direction. Correspondingly, a row of coating parameter detection devices can be fixedly arranged along the width direction of the cover film, that is, the row of coating parameter detection devices can detect a row of collection areas. As the cover film moves, each coating parameter detection device collects multiple collection areas along the length direction on the cover film in turn.

[0062] Further, in an embodiment provided by the present invention, the coating parameters in the above step 210 include coating thickness. The coating thickness can simply and intuitively reflect whether the coating result of the coating meets the inspection standard, and the coating thickness is also directly related to the hydrophobicity and adhesion strength of the coating.

[0063] Furthermore, the above-mentioned coating thickness can be detected by laser, which is not limited in this embodiment.

[0064] Figure 3 This is the third flow diagram of the cover film forming method provided by the present invention, please refer to Figure 3 In a further embodiment provided by the present invention, the above step 300 includes:

[0065] 310. If the coating thickness is greater than or less than a preset thickness range, adjust the coating liquid output so that the coating thickness is within the preset thickness range.

[0066] In actual production, a preset thickness range that enables the coating to have stronger hydrophobic properties and adhesion strength can be obtained based on past experimental data. For example, the preset thickness range can be 12 μm-15 μm.

[0067] If the coating thickness is greater than a preset thickness range, the coating liquid output amount executed in real time is reduced to reduce the coating thickness of the cover film produced subsequently.

[0068] If the coating thickness is less than the preset thickness range, the coating liquid output amount executed in real time is increased to increase the coating thickness of the cover film produced subsequently.

[0069] Specifically, during the roller coating process, the amount of the hydrophobic glue can be adjusted by adjusting the adjustment parameters of the roller coating adjustment plate and the number of roller coatings, etc. During the spraying process, the amount of the hydrophobic glue can be adjusted by adjusting the spraying air pressure, feed amount and the number of sprayings, etc.

[0070] In another embodiment provided by the present invention, the above-mentioned coating parameters also include coating weight. Coating weight refers to the weight of the coating per unit area. The coating weight can be indirectly obtained based on the coating thickness. Figure 4 This is the fourth flow diagram of the cover film forming method provided by the present invention, please refer to Figure 4 That is to say, the above step 200 also includes:

[0071] 220. Obtain coating density.

[0072] In this step, the coating density can be obtained by measuring a hydrophobic coating sample in this embodiment. Since the hydrophobic glue configured in this embodiment has high stability and consistency, the coating density of the sample is the coating density of the entire hydrophobic coating.

[0073] 230. Obtain coating weight based on coating thickness and coating density in any collection area.

[0074] Since the coating is a film on the inner surface of the hydrophobic cover, the hydrophobic coating in the cover film is usually arranged downward. If the coating weight is too large, the hydrophobic performance and adhesion strength of the cover film may be poor, affecting the stability of the product and causing inconvenience to the user.

[0075] Specifically, the preset coating weight per unit area that enables the coating to have strong hydrophobicity and adhesion strength can be obtained based on past experimental data. The preset coating weight per unit area can be 0.5 g / m 2 -1.0g / m 2 For example, it can be 0.7 g / m 2 -0.8g / m 2 .

[0076] Figure 5 This is the fifth flow diagram of the cover film forming method provided by the present invention, please refer to Figure 5 Correspondingly, in one embodiment provided by the present invention, step 300 includes:

[0077] 320. If the coating weight is greater than or less than the preset weight range, adjust the coating liquid output so that the coating weight is within the preset weight range.

[0078] If the measured coating weight is greater than the preset gram weight range, the coating liquid output executed in real time is reduced to reduce the coating weight of the cover film produced subsequently.

[0079] If the coating weight is less than the preset gram weight range, the coating liquid output executed in real time is increased to increase the coating weight of the cover film produced subsequently.

[0080] The combination of step 210 and step 310, and the combination of step 220, 230 and step 320, can be used alone or in combination, depending on whether the user selects a preset thickness range or a preset gram weight range.

[0081] Of course, in addition, other parameters of the coating may also be detected and adjusted to further improve the stability of the coating. In an embodiment provided by the present invention, the above-mentioned coating parameters include coating uniformity.

[0082] The coating uniformity can be directly detected. The coating uniformity can also be obtained by comparing the coating thickness obtained in step 310. Specifically, a plurality of different sampling areas are divided within the target detection area, and the coating uniformity is obtained based on the difference or variance of the coating thickness in the plurality of sampling areas.

[0083] For example, the uniformity can be obtained by the following formula 1:

[0084] Uniformity = (maximum value - minimum value) / average value * 100% Formula 1

[0085] Wherein, the maximum value refers to the maximum value of the coating thickness in multiple different collection areas, μm;

[0086] The minimum value refers to the minimum value of the coating thickness in multiple different collection areas, μm;

[0087] The average value refers to the average value of the coating thickness in multiple different sampling areas, μm.

[0088] Correspondingly, based on the obtained uniformity, if the uniformity is lower than the preset uniformity value, it means that the detection standard is met and no adjustment is made; if the uniformity is higher than or equal to the preset uniformity value, it means that the non-detection standard is met, and in the roller coating process, the inclination angle of the roller coating adjustment plate, the surface roughness of the roller coating adjustment plate or the surface roughness of the material taking roller can be adjusted. In the spraying process, the nozzle can be inspected and the uniformity of the spraying air pressure and the uniformity of the feed amount can be adjusted.

[0089] Figure 6 This is the sixth flow diagram of the method for forming a cover film provided by the present invention, see Figure 6 In one embodiment provided by the present invention, step 100 includes coating by a spraying process, specifically including:

[0090] 110. Spray the hydrophobic glue on the substrate.

[0091] Among them, the spraying gas pressure is 0.5MPa-0.9MPa, the feed amount is 0.2mL / min-0.4mL / min, the spraying distance is 22cm-28cm, and the number of spraying times is 5 times-8 times.

[0092] 120. Dry the hydrophobic adhesive to solidify the hydrophobic adhesive to form a hydrophobic coating.

[0093] Among them, the drying temperature is 70℃-90℃, and the drying time is 8s-12s.

[0094] Based on the above steps, the hydrophobicity and adhesion strength of the cover film can be guaranteed.

[0095] In any of the above embodiments, an array of microstructures is formed on the substrate, which can enhance the stability of the hydrophobic performance of the cover film at a macroscopic level.

[0096] The microstructure may be provided before or after the hydrophobic glue is applied. In addition, the microstructure and the hydrophobic glue may be formed on the substrate simultaneously through the embossing process, which is not limited in this embodiment.

[0097] Specifically, the microstructure is in the shape of a micro-protrusion or a concave microcavity. For example, the substrate can be an aluminum-plastic film, and the above-mentioned microstructure can be formed by a rolling process. The microstructure is in the shape of a micro-protrusion, which can be one or more of the group consisting of a polygonal pyramid, a polygonal pyramid, a cone, a polygonal prism, and a cylinder, or the shape of the concave microcavity can be selected from one or more of an inverted polygonal pyramid, an inverted polygonal pyramid, an inverted cone, a polygonal prism, and a cylinder. This embodiment is not limited to this.

[0098] In any of the above embodiments, the ingredients of the above-mentioned hydrophobic glue include: sintered mineral powder, wherein the mineral powder may include silicon dioxide, titanium dioxide, diatomaceous earth, attapulgite, etc. These small particles can be combined together by sintering without damaging their own roughness, thereby enhancing the durability of the hydrophobic properties of the cover film at the micron scale.

[0099] Moreover, the hydrophobic glue also includes at least one of a polymer and a cross-linkable monomer. By gluing the sintered particles together, the hydrophobic property of the cover film is enhanced at a micrometer scale.

[0100] The cover film forming method provided by the present invention, while coating the hydrophobic glue on the substrate, obtains coating parameters in multiple collection areas of the hydrophobic coating that has been cured, and adjusts the coating parameters according to the multiple coating parameters so that the thickness of the coating meets the inspection standard. This method avoids the thickness of the coating being too large or too small, improves the hydrophobic performance and adhesion strength of the cover film, reduces the generation of defective products, and improves production efficiency.

[0101] Furthermore, the above-mentioned hydrophobic glue comprises: sintered mineral powder, wherein the mineral powder may include silicon dioxide, titanium dioxide, diatomaceous earth, attapulgite, etc. These small particles can be combined together by sintering without damaging their own roughness, and the durability of the hydrophobic performance of the cover film is enhanced at the micrometer scale. Moreover, the components of the hydrophobic glue also include: at least one of a polymer and a cross-linkable monomer. By gluing the sintered particles together, the hydrophobic performance of the cover film is enhanced at the micrometer scale.

[0102] A cover body is provided, which includes a cover film formed by any of the above-mentioned cover film forming methods. The cover film can be used alone and connected to the bottle body by bonding or the like. For example, it can be used as a yogurt cover body.

[0103] The cover film can also be connected with the body to form a composite cover. The body can be made of plastic, metal, paper, glass, ceramic, etc. The two can be connected by at least one of thermal bonding and adhesive bonding to ensure the stability of the connection. In addition, for the cover film produced in batches, after the steps of printing patterns and cutting, it can be combined with the body to form a composite cover and fixed on the bottle body. The composite cover can also be used as a yogurt cover.

[0104] The cover provided by the present invention, while coating the hydrophobic glue on the substrate, obtains coating parameters in multiple collection areas of the hydrophobic coating that has been cured, and adjusts the coating parameters according to the multiple coating parameters so that the thickness of the coating meets the inspection standard. This method avoids the coating thickness being too large or too small, improves the hydrophobic performance and adhesion strength of the cover film, reduces the generation of defective products, and improves production efficiency.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for forming a cover film, characterized in that: include: Applying a hydrophobic adhesive on a substrate, wherein the hydrophobic adhesive is cured to form a hydrophobic coating; Acquiring coating parameters respectively in a plurality of collection areas of the hydrophobic coating; Coating parameters are adjusted based on a plurality of said coating parameters.

2. The method for forming a cover film according to claim 1, wherein: The coating parameters are obtained respectively in the multiple collection areas of the hydrophobic coating, including: The surface of the hydrophobic coating is evenly divided into a plurality of collection areas, and the coating parameters collected at any position in each collection area are acquired as the coating parameters corresponding to the collection area.

3. The method for forming a cover film according to claim 2, wherein: The coating parameters include coating thickness.

4. The method for forming a cover film according to claim 3, wherein: The step of adjusting the coating parameters according to the plurality of coating parameters comprises: If the coating thickness is greater than or less than a preset thickness range, the coating liquid output is adjusted to ensure that the coating thickness is within the preset thickness range.

5. The method for forming a cover film according to claim 3, wherein: The coating parameters also include coating weight; The step of acquiring coating parameters in a plurality of collection areas of the hydrophobic coating respectively further comprises: Get coating density; Based on the coating thickness and coating density of any of the collection areas, the coating weight is obtained.

6. The method for forming a cover film according to claim 5, wherein: The step of adjusting the coating parameters according to the plurality of coating parameters comprises: If the coating weight is greater than or less than the preset weight range, the coating liquid output is adjusted to ensure that the coating weight is within the preset weight range.

7. The method for forming a cover film according to claim 2, wherein: The coating parameters include coating uniformity.

8. The method for forming a cover film according to claim 1, wherein: The method of coating a hydrophobic adhesive on a substrate and curing the hydrophobic adhesive to form a hydrophobic coating comprises: Spray the hydrophobic glue on the substrate, wherein the spraying pressure is 0.5MPa-0.9MPa, the feed rate is 0.2mL / min-0.4mL / min, the spraying distance is 22cm-28cm, and the number of spraying times is 5-8 times; The hydrophobic adhesive is dried to solidify the hydrophobic adhesive to form a hydrophobic coating, wherein the drying temperature is 70° C.-90° C. and the drying time is 8s-12s.

9. The method for forming a cover film according to any one of claims 1 to 8, characterized in that: The components of the hydrophobic glue include: sintered mineral powder; The components of the hydrophobic glue also include: at least one of a polymer and a cross-linkable monomer.

10. A cover body, characterized in that: The invention comprises a cover film formed by the cover film forming method according to any one of claims 1 to 9.

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