Film release coating and missed coating detection method thereof

Abstract

The invention discloses a thin film release coating and a missed coating detection method thereof, and relates to the technical field of thin film coatings and missed coating detection, the thin film release coating comprises the following raw material components by weight: 1-5 parts of a wax emulsion, 40-60 parts of purified water, 40-60 parts of ethanol, 1-10 parts of fluorescent powder and 0.01-0.1 part of an antifoaming agent; wherein the fluorescent powder is one of infrared excitation transparent fluorescent powder or ultraviolet excitation transparent fluorescent powder. According to the invention, the defects of coating omission and online monitoring incapability of the existing transparent film material coating product are overcome, the potential quality hazard caused by quality problems is reduced, and the yield of the product is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thin film coatings and coating leakage detection, in particular to a thin film release coating and a coating leakage detection method thereof. Background Art

[0002] Currently, film products, particularly transparent film products, are widely used in industries such as printing, pharmaceuticals, daily packaging, optics, and self-adhesive labels. Anodized aluminum, in particular, as a film product, can serve decorative, ornamental, and anti-counterfeiting functions, effectively enhancing the quality of printed and hot stamped products. It has also seen significant growth in many fields, particularly in paper packaging and printing. It is particularly common in tobacco, alcoholic beverages, pharmaceuticals, and daily necessities packaging, and has gained widespread consumer acceptance. However, during the coating process, release coatings on transparent films often experience leaks, severely impacting product quality and leading to financial losses and customer complaints. Because the film material and release coating are both transparent, leaks are largely undetectable, and there has been no effective means of detection and control, a long-standing challenge for production technicians. Summary of the Invention

[0003] The present invention aims to solve the shortcomings of the background technology and provide a thin film release coating and a preparation method thereof, which at least solves some of the technical problems in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions: A thin film release coating is formed by applying a thin film release coating onto a film; The film release coating comprises the following raw material components and parts by weight: 1-5 parts of wax emulsion, 40-60 parts of purified water, 40-60 parts of ethanol, 1-10 parts of fluorescent dye, and 0.01-0.1 parts of defoaming agent; Wherein, the fluorescent dye is one of infrared transparent fluorescent dye and ultraviolet transparent fluorescent dye.

[0005] Furthermore, the wax emulsion is a mixture of montan wax emulsion and organosilicon emulsion or both.

[0006] Furthermore, the ultraviolet transparent phosphor is a mixture of one or more of green ultraviolet transparent phosphor with a wavelength of 524 nm, yellow ultraviolet transparent phosphor with a wavelength of 592 nm, and red ultraviolet transparent phosphor with a wavelength of 695 nm.

[0007] Furthermore, the infrared transparent phosphor is a mixture of one or more of red infrared transparent phosphor with a wavelength of 655 nm, blue infrared transparent phosphor with a wavelength of 464 nm, and green infrared transparent phosphor with a wavelength of 532 nm.

[0008] Furthermore, the method for preparing the coating of the thin film release coating comprises the following steps: Add fluorescent dye to ethanol and stir evenly; Add purified water and stir evenly; Add wax emulsion and stir evenly; Add defoaming agent, stir evenly and then filter to obtain a thin film release coating.

[0009] Furthermore, the method for preparing the coating of the film release coating is specifically as follows: Add the ethanol to the stirring tank, adjust the stirring speed of the stirring tank to 100-200 rpm, add the fluorescent dye to the stirring tank, and stir for 5-10 minutes to evenly disperse the fluorescent dye; Add purified water into a stirring tank at a speed of 100-200 rpm and stir for 5-10 minutes to evenly disperse the fluorescent dye in the stirring tank; Add the wax emulsion into a stirring kettle at a speed of 100-200 rpm and stir for 5-10 minutes until uniform; Add the defoaming agent into a stirring kettle at a rotation speed of 100-200 rpm, stir for 2-5 minutes, and then filter to obtain a thin film release coating.

[0010] On the other hand, the present invention also provides a method for detecting leakage of a thin film release coating, comprising an online detection system, a thin film release coating, and a film; The online detection system includes a shooting module, an image signal processing module, a data processing module, an alarm module and a light source emission module; The method for detecting a missing coating comprises the following steps: Applying the above-mentioned film release coating onto the film by a coating machine to form a film release coating; The light source emitting module emits light, and the coated film is placed on the light source emitting module; The shooting module shoots a picture of the defect. The fluorescent dye is excited by the light source to generate fluorescence and is photographed by the shooting module to form a defect picture. The defect picture is fed back to the image signal processing module.

[0011] Preferably, the light source emission module uses a lamp tube as a light source, and the lamp tube includes one or more of an ultraviolet light source lamp tube or an infrared light source lamp tube.

[0012] Preferably, the ultraviolet light source lamp has an emission wavelength of 365 nm; The infrared light source lamp has an emission wavelength of 980 nm.

[0013] Preferably, the camera module is installed between the release layer coater oven outlet and the cooling roller; A light source emission module is placed under the shooting module. When the coating with fluorescent dye passes through the shooting module, the part with coating defects will not emit fluorescence under the illumination of the light source emission module. At this time, the shooting module takes a picture of the defect and feeds the defect picture back to the image signal processing module; The image signal processing module feeds back the defect image to the data processing module, which records the defect image, meter location and feedback signal to the alarm module. The alarm module will sound a warning alarm, and the operator can mark the location of the missing paint defect in a timely and accurate manner.

[0014] Beneficial effects of the present invention: The present invention adds fluorescent paint to the film paint, and after the paint is coated, it can be stimulated by light to emit fluorescence, so that the uncoated part can be detected.

[0015] The present invention provides a light source emission module, a shooting module and an image signal processing module. The shooting module shoots the coating illuminated by the light source to display the uncoated parts. The image signal processing module can mark and alarm the uncoated parts to facilitate staff to repair them. This solves the problems of uncoated defects and the inability to monitor online in current transparent film material coating products, reduces quality risks caused by quality problems, and effectively improves the product yield. DETAILED DESCRIPTION

[0016] The following provides a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments represent only a portion of the present invention, not all of its embodiments. Based on the embodiments of the present invention, any other embodiments derived by those skilled in the art without inventive effort are also within the scope of protection of the present invention.

[0017] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0018] During the coating process of transparent films, coating omissions often occur, which seriously affects product quality and easily leads to economic losses and customer complaints.

[0019] However, since the film material is transparent and the release agent coating is also transparent, when the coating leakage phenomenon occurs, the operator can basically not find it with the naked eye, and there has been no effective means to detect and control it. This has long been a problem for the majority of production technicians.

[0020] The present invention discloses an online detection method for coating leakage of a film release layer. In view of the characteristics that the film is transparent and the release agent is also transparent, a camera detection system is installed between the oven outlet and the cooling roller of a release layer coater, and an infrared light source lamp tube or an ultraviolet light source lamp tube is placed under the camera. When a coating with infrared fluorescence or ultraviolet fluorescence passes under the detection camera, the coating leakage defective part will not emit fluorescence under the irradiation of infrared or ultraviolet rays. At this time, the detection system will sound an alarm, and the operator can mark the coating leakage defect position in time and accurately, so that the defective product will not flow to the hands of downstream customers and cause complaints.

[0021] The present invention effectively solves the problems of coating omission defects and inability to monitor online in current transparent film material coating products, reduces quality risks caused by quality problems, effectively improves the yield rate of production products, and avoids customer complaints caused by quality defects.

[0022] A thin film release coating is formed by applying a thin film release coating onto a film; The film release coating comprises the following raw material components and parts by weight: 1-5 parts of wax emulsion, 40-60 parts of purified water, 40-60 parts of ethanol, 1-10 parts of fluorescent dye, and 0.01-0.1 parts of defoaming agent; Wherein, the fluorescent dye is one of infrared transparent fluorescent dye and ultraviolet transparent fluorescent dye.

[0023] It should be noted that by adding fluorescent dyes to the film release coating, after coating, a uniformly distributed fluorescent pattern can be displayed on the coating layer when irradiated by a corresponding light source.

[0024] Experiments have verified that the optimal weight ratio of fluorescent dye is 1-10 parts. If the weight ratio is lower than this, the fluorescence distribution will be too dispersed, which may cause small areas to be missed and cannot be discovered. If the weight ratio is higher than this, it will affect the performance of the film release coating.

[0025] In a further embodiment of this example, the wax emulsion is montan wax emulsion or organosilicon emulsion, or a mixture of the two.

[0026] In a further implementation of this embodiment, the ultraviolet transparent phosphor is a mixture of one or more of green ultraviolet transparent phosphor with a wavelength of 524 nm, yellow ultraviolet transparent phosphor with a wavelength of 592 nm, and red ultraviolet transparent phosphor with a wavelength of 695 nm.

[0027] It should be noted that the above-mentioned ultraviolet fluorescent powder is preferably used to correspond to the ultraviolet light source lamp used in the subsequent detection process.

[0028] In a further implementation of this embodiment, the infrared transparent phosphor is a mixture of one or more of red infrared transparent phosphor with a wavelength of 655 nm, blue infrared transparent phosphor with a wavelength of 464 nm, and green infrared transparent phosphor with a wavelength of 532 nm.

[0029] It should be noted that the above infrared phosphor is better for the infrared light source used in the subsequent detection process. In a further embodiment of this embodiment, the method for preparing the coating of the thin film release coating comprises the following steps: Add fluorescent dye to ethanol and stir evenly; Add purified water and stir evenly; Add wax emulsion and stir evenly; Add defoaming agent, stir evenly and then filter to obtain a thin film release coating.

[0030] In a further embodiment of this embodiment, the method for preparing the coating of the thin film release coating is specifically as follows: Add the ethanol to the stirring tank, adjust the stirring speed of the stirring tank to 100-200 rpm, add the fluorescent dye to the stirring tank, and stir for 5-10 minutes to evenly disperse the fluorescent dye; Add purified water into a stirring tank at a speed of 100-200 rpm and stir for 5-10 minutes to evenly disperse the fluorescent dye in the stirring tank; Add the wax emulsion into a stirring kettle at a speed of 100-200 rpm and stir for 5-10 minutes until uniform; Add the defoaming agent into a stirring kettle at a rotation speed of 100-200 rpm, stir for 2-5 minutes, and then filter to obtain a thin film release coating.

[0031] On the other hand, the present invention also provides a method for detecting leakage of a thin film release coating, comprising an online detection system, a thin film release coating, and a film; The online detection system includes a shooting module, an image signal processing module, a data processing module, an alarm module, and a light source emission module; The method for detecting a missing coating comprises the following steps: Applying the film release coating onto the film through a coating machine to form a film release coating; The light source emitting module emits light, and the coated film is placed on the light source emitting module; The shooting module takes pictures of the defect and feeds the defect pictures back to the image signal processing module; The image signal processing module feeds back the defect image to the data processing module, and the data processing module records the defect image, meter location and feedback signal to the alarm module.

[0032] In a further implementation of this embodiment, the light source emission module uses a lamp tube as a light source, and the lamp tube includes one or more of an ultraviolet light source lamp tube or an infrared light source lamp tube.

[0033] In a further embodiment of this embodiment, the ultraviolet light source lamp has an emission wavelength of 365 nm; The infrared light source lamp has an emission wavelength of 980 nm.

[0034] In a further embodiment of this embodiment, the camera module is installed between the release layer coater oven outlet and the cooling roller; A light source emission module is placed under the shooting module. When the coating with fluorescent dye passes through the shooting module, the part with coating defects will not emit fluorescence under the illumination of the light source emission module. At this time, the shooting module takes a picture of the defect and feeds the defect picture back to the image signal processing module; The image signal processing module feeds back the defect image to the data processing module, which records the defect image, meter location and feedback signal to the alarm module. The alarm module will sound a warning alarm, and the operator can mark the location of the missing paint defect in a timely and accurate manner.

[0035] Example 1 In this embodiment, the online detection camera system is composed of a shooting module, an image signal processing module, a data processing module, a display and an alarm module.

[0036] The light source of the lamp is an infrared lamp with a light wave of 980nm.

[0037] The film coating is prepared from the following materials: 4.4 parts of wax emulsion, 50 parts of purified water, 50 parts of ethanol, 1 part of red transparent phosphor with a wavelength of 655 nm, and 0.01 part of defoaming agent.

[0038] Put 50 parts of the designed formula of ethanol into the container.

[0039] Slowly add 1 portion of the designed formula of red transparent fluorescent powder with a wavelength of 655nm at a rotation speed of 200rpm, and stir for 5 minutes to evenly disperse the transparent fluorescent dye.

[0040] Slowly add the designed amount of purified water at a rotation speed of 200 rpm and stir for 5 minutes to evenly disperse the mixed solution and transparent fluorescent dye.

[0041] The designed amount of montan wax emulsion was slowly added at a rotation speed of 100 rpm, and stirred for 10 minutes to mix the mixed solution and montan wax emulsion evenly.

[0042] Add the designed amount of defoamer and stir at 100 rpm for 5 minutes, then filter and set aside.

[0043] The prepared fluorescent coating is applied to the film using a coating machine to form a fluorescent release film. After the fluorescent release film is baked in an oven, it passes through the shooting module of the camera detection system, and the shooting module automatically records it. When a coating defect is detected, the data processing module sends a warning instruction to the alarm alarm, and the operator marks the location of the coating defect according to the length in meters recorded by the data center.

[0044] Example 2 In this embodiment, the online detection camera system is composed of a shooting module, an image signal processing module, a data processing module, a display and an alarm module.

[0045] The light source of the lamp is an infrared lamp with a light wave of 980nm.

[0046] The film release coating is prepared from the following materials: 4.4 parts of wax emulsion, 50 parts of purified water, 50 parts of ethanol, 1.5 parts of blue transparent phosphor with a wavelength of 464 nm, and 0.01 parts of defoaming agent.

[0047] Put 50 parts of the designed formula of ethanol into the container.

[0048] Slowly add 1.5 parts of blue transparent fluorescent powder with a wavelength of 464 nm in the designed formula at a rotation speed of 200 rpm, and stir for 10 minutes to evenly disperse the transparent fluorescent dye.

[0049] Slowly add the designed amount of purified water at a rotation speed of 200 rpm and stir for 5 minutes to evenly disperse the mixed solution and transparent fluorescent dye.

[0050] The designed amount of montan wax emulsion was slowly added at a rotation speed of 100 rpm, and stirred for 10 minutes to mix the mixed solution and montan wax emulsion evenly.

[0051] Add the designed amount of defoamer and stir at 100 rpm for 5 minutes, then filter and set aside.

[0052] The prepared fluorescent release agent is applied to the film using a coating machine to form a fluorescent release film. After the fluorescent release film is baked in an oven, it passes through the shooting module of the camera detection system. The shooting module automatically records the film. When a coating defect is detected, the data processing module sends a warning instruction to the alarm alarm. The operator marks the location of the coating defect according to the length in meters recorded by the data center.

[0053] Example 3 In this embodiment, the online detection camera system is composed of a shooting module, an image signal processing module, a data processing module, a display and an alarm module.

[0054] The light source emitter is an infrared lamp with a light wave of 980nm.

[0055] The film release coating is prepared from the following materials: 4.4 parts of wax emulsion, 50 parts of purified water, 50 parts of ethanol, 2 parts of green transparent phosphor with a wavelength of 532 nm, and 0.01 parts of defoaming agent.

[0056] Put 50 parts of the designed formula of ethanol into the container.

[0057] Slowly add 2 parts of green transparent fluorescent powder with a wavelength of 532nm in the designed formula at a rotation speed of 200rpm, and stir for 10 minutes to evenly disperse the transparent fluorescent dye.

[0058] Slowly add the designed amount of purified water at a rotation speed of 200 rpm and stir for 5 minutes to evenly disperse the mixed solution and transparent fluorescent dye.

[0059] The designed amount of montan wax emulsion was slowly added at a rotation speed of 100 rpm, and stirred for 10 minutes to mix the mixed solution and montan wax emulsion evenly.

[0060] Add the designed amount of defoamer and stir at 100 rpm for 5 minutes, then filter and set aside.

[0061] The prepared fluorescent release agent is applied to the film using a coating machine to form a fluorescent release film. After the fluorescent release film is baked in an oven, it passes through the shooting module of the camera detection system. The shooting module automatically records the film. When a coating defect is detected, the data processing module sends a warning instruction to the alarm alarm. The operator marks the location of the coating defect according to the length in meters recorded by the data center.

[0062] Example 4 In this embodiment, the online detection camera system is composed of a shooting module, an image signal processing module, a data processing module, a display and an alarm module.

[0063] The light source emitter is an ultraviolet lamp with a light wave of 365nm.

[0064] The film release coating is prepared from the following materials: 4.4 parts of wax emulsion, 50 parts of purified water, 50 parts of ethanol, 1 part of red transparent phosphor with a wavelength of 655 nm, and 0.01 part of defoaming agent.

[0065] Put 50 parts of the designed formula of ethanol into the container.

[0066] Slowly add 1 portion of the designed formula of red transparent fluorescent powder with a wavelength of 655nm at a rotation speed of 100rpm, and stir for 10 minutes to evenly disperse the transparent fluorescent dye.

[0067] Slowly add the designed amount of purified water at a rotation speed of 100 rpm and stir for 10 minutes to evenly disperse the mixed solution and transparent fluorescent dye.

[0068] The designed amount of montan wax emulsion was slowly added at a rotation speed of 100 rpm, and stirred for 10 minutes to mix the mixed solution and montan wax emulsion evenly.

[0069] Add the designed amount of defoamer and stir at 100 rpm for 5 minutes, then filter and set aside.

[0070] The prepared fluorescent release agent is applied to the film using a coating machine to form a fluorescent release film. After the fluorescent release film is baked in an oven, it passes through the shooting module of the camera detection system. The shooting module automatically records the film. When a coating defect is detected, the data processing module sends a warning instruction to the alarm alarm. The operator marks the location of the coating defect according to the length in meters recorded by the data center.

[0071] Example 5 In this embodiment, the online detection camera system is composed of a shooting module, an image signal processing module, a data processing module, a display and an alarm module.

[0072] The light source emitter is an ultraviolet lamp with a light wave of 365nm.

[0073] The film release coating is prepared from the following materials: 4.4 parts of wax emulsion, 50 parts of purified water, 50 parts of ethanol, 3 parts of yellow transparent fluorescent powder with a wavelength of 592 nm, and 0.01 parts of defoaming agent.

[0074] Put 50 parts of the designed formula of ethanol into the container.

[0075] Slowly add 3 parts of yellow transparent fluorescent powder with a wavelength of 592nm in the designed formula at a rotation speed of 200rpm, and stir for 5 minutes to evenly disperse the transparent fluorescent dye.

[0076] Slowly add the designed amount of purified water at a rotation speed of 200 rpm and stir for 10 minutes to evenly disperse the mixed solution and transparent fluorescent dye.

[0077] The designed amount of montan wax emulsion was slowly added at a rotation speed of 100 rpm, and stirred for 10 minutes to mix the mixed solution and montan wax emulsion evenly.

[0078] Add the designed amount of defoamer and stir at 100 rpm for 5 minutes, then filter and set aside.

[0079] The prepared fluorescent release agent is applied to the film using a coating machine to form a fluorescent release film. After the fluorescent release film is baked in an oven, it passes through the shooting module of the camera detection system. The shooting module automatically records the film. When a coating defect is detected, the data processing module sends a warning instruction to the alarm alarm. The operator marks the location of the coating defect according to the length in meters recorded by the data center.

[0080] Example 6 In this embodiment, the online detection camera system is composed of a shooting module, an image signal processing module, a data processing module, a display and an alarm module.

[0081] The light source emitter is an ultraviolet lamp with a light wave of 365nm.

[0082] The film release coating is prepared from the following materials: 4.4 parts of wax emulsion, 50 parts of purified water, 50 parts of ethanol, 2 parts of green transparent phosphor with a wavelength of 524 nm, and 0.01 parts of defoaming agent.

[0083] Put 50 parts of the designed formula of ethanol into the container.

[0084] Slowly add 2 parts of green transparent fluorescent powder with a wavelength of 524 nm in the designed formula at a rotation speed of 200 rpm, and stir for 10 minutes to evenly disperse the transparent fluorescent dye.

[0085] Slowly add the designed amount of purified water at a rotation speed of 200 rpm and stir for 5 minutes to evenly disperse the mixed solution and transparent fluorescent dye.

[0086] The designed amount of montan wax emulsion was slowly added at a rotation speed of 100 rpm, and stirred for 10 minutes to mix the mixed solution and montan wax emulsion evenly.

[0087] Add the designed amount of defoamer and stir at 100 rpm for 5 minutes, then filter and set aside.

[0088] The prepared fluorescent release agent is applied to the film using a coating machine to form a fluorescent release film. After the fluorescent release film is baked in an oven, it passes through the shooting module of the camera detection system. The shooting module automatically records the film. When a coating defect is detected, the data processing module sends a warning instruction to the alarm alarm. The operator marks the location of the coating defect according to the length in meters recorded by the data center.

[0089] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A film release coating, characterized in that: The film release coating comprises the following raw material components in parts by weight: 1-5 parts of wax emulsion, 40-60 parts of purified water, 40-60 parts of ethanol, 1-10 parts of phosphor and 0.01-0.1 parts of defoaming agent; The fluorescent powder is one of infrared excited transparent fluorescent powder and ultraviolet excited transparent fluorescent powder.

2. The film release coating according to claim 1, characterized in that: The wax emulsion is montan wax emulsion or organosilicon emulsion or a mixture of the two.

3. The film release coating according to claim 1, characterized in that: The ultraviolet excited transparent fluorescent powder has an excitation wavelength of 200nm-400nm and emits light with a wavelength of 400nm-750nm.

4. The film release coating according to claim 1, characterized in that: The infrared excited transparent phosphor has an excitation wavelength of 200nm-1000nm and emits light with a wavelength of 700nm-2500nm.

5. A method for detecting leaking of a film release coating, characterized in that: The invention comprises an online detection system, a film release coating and a film as claimed in any one of claims 1 to 4; The online detection system includes a shooting module, an image signal processing module, a data processing module, an alarm module and a light source emission module; The method for detecting a missing coating comprises the following steps: preparing the thin film release coating; Applying the prepared film release coating to the film through a coating machine to form a film release coating; The light source emitting module emits light, and the coated film is placed on the light source emitting module; The photographing module photographs the defect, the fluorescent powder is excited by the light source to generate fluorescence and the fluorescent powder is photographed by the photographing module to form a defect image, and the defect image is fed back to the image signal processing module; The image signal processing module feeds back the defect image to the data processing module, and the data processing module records the defect image, meter location and feedback signal to the alarm module.

6. The method for detecting leaking of thin film release coating according to claim 5, characterized in that: The light source emission module uses a lamp tube as a light source, and the lamp tube includes one or more of an ultraviolet light source lamp tube or an infrared light source lamp tube.

7. The method for detecting leaking of a thin film release coating according to claim 6, wherein: The wavelength of the ultraviolet light source lamp is 365nm; the wavelength of the infrared light source lamp is 980nm.

8. The method for detecting leaking of thin film release coating according to claim 7, wherein: The camera module is installed between the release layer coating machine oven outlet and the cooling roller; A light source emission module is placed under the shooting module. When the coating with fluorescent powder passes through the shooting module, the part with missing coating defects will not emit fluorescence under the illumination of the light source emission module. At this time, the shooting module takes a picture of the defect and feeds the defect picture back to the image signal processing module; The image signal processing module feeds back the defect image to the data processing module, which records the defect image, meter location and feedback signal to the alarm module. The alarm module will sound a warning alarm, and the operator can mark the location of the missing paint defect in a timely and accurate manner.

9. The method for detecting leaking of thin film release coating according to claim 5, wherein: The preparation method of the thin film release coating comprises: Add phosphor into ethanol and stir evenly; Add purified water and stir evenly; Add wax emulsion and stir evenly; Add defoaming agent, stir evenly and then filter to obtain a thin film release coating.

10. The method for detecting leaking of thin film release coating according to claim 9, wherein: The preparation method of the thin film release coating is specifically as follows: Add the ethanol into the stirring tank, adjust the stirring speed of the stirring tank to 100-200 rpm, add the phosphor into the stirring tank, and stir for 5-10 minutes to evenly disperse the phosphor; Add pure water into a stirring tank at a speed of 100-200 rpm and stir for 5-10 minutes to evenly disperse the phosphor in the stirring tank; Add the wax emulsion into a stirring kettle at a speed of 100-200 rpm and stir for 5-10 minutes until uniform; Add the defoaming agent into a stirring kettle at a rotation speed of 100-200 rpm, stir for 2-5 minutes, and then filter to obtain a thin film release coating.