Spraying positioning method for fluorescent agent on end face of copper foil roll
By adding fluorescent agent to the anti-rust agent, it emits fluorescence after spraying, real-time monitoring and detection of the sprayed anti-rust agent on the end surface of the copper foil roll is achieved, and the detection is highly subjective, complex and costly in the prior art. High problems improve detection accuracy and production efficiency and extend the service life of the product.
Patent Information
- Application Number
- CN202411827172.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-02-18
AI Technical Summary
In the prior art, the detection of the anti-rust spraying effect has problems such as strong subjectivity, complex operation and high cost, and real-time monitoring cannot be achieved, resulting in uneven coating problems during the production process.
Add colorless and transparent fluorescent agent to the anti-rust agent, and detect the sprayed copper foil roll through fluorescent lamp irradiation. The fluorescent agent coating fluoresces, thereby real-time monitoring and detection of the spraying process.
It improves the accuracy and simplicity of the inspection, reduces the detection cost, realizes real-time monitoring of the spraying process, promptly discovers and corrects problems, avoids rust problems caused by uneven coating, and extends the service life of the product.
Smart Images
Figure CN119456369A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of copper foil manufacturing, in particular to a method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll. Background Art
[0002] In the field of copper foil manufacturing technology, the spraying of rust inhibitor is an important process, which can effectively prevent the copper foil from oxidizing during storage and use, thereby extending its service life. However, the spraying effect of rust inhibitor is affected by many factors, such as spraying equipment, spraying process, spraying environment, etc. In order to ensure the spraying effect of rust inhibitor, the spraying process needs to be strictly monitored and tested. In the field of fluorescent agent addition technology, fluorescent agent is a chemical substance that can absorb ultraviolet rays and emit visible light. When fluorescent agent is added to other substances, it can make the substance fluoresce, which is convenient for observation and detection.
[0003] Solutions of existing technologies: In existing technologies, manual inspection or instrument detection is usually used to monitor the spraying effect of rust inhibitors. Manual inspection mainly observes with the naked eye whether the rust inhibitor coating on the surface of the copper foil is uniform, whether there are any missing coatings or the coating is too thin, etc. Instrument detection uses special detection equipment, such as thickness gauges, optical microscopes, etc., to accurately measure the thickness, uniformity and other parameters of the rust inhibitor coating.
[0004] Problems with the existing technology: However, there are some problems with these existing detection methods. First, manual inspection is highly subjective and prone to misjudgment or omission. Secondly, although instrument detection has high accuracy, it is complicated to operate and has high costs, making it unsuitable for large-scale production applications. In addition, neither of these two methods can monitor the spraying process in real time. Once a problem is discovered, it has often caused certain losses. Therefore, how to effectively monitor and detect the coating effect of the rust inhibitor during the spraying process is an urgent problem to be solved in the current field of copper foil end face anti-oxidation technology. Summary of the invention
[0005] The purpose of the present invention is to provide a method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solution: A method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll, comprising the following steps:
[0006] Step 1: Prepare copper foil rolls and rust inhibitors;
[0007] Step 2, selecting a colorless and transparent fluorescent agent, and adding the fluorescent agent to the rust inhibitor;
[0008] Step three, spraying the rust preventive agent added with the fluorescent agent evenly on the end surface of the copper foil roll;
[0009] Step 4, using a fluorescent lamp to illuminate the copper foil roll sprayed with the rust preventive agent for inspection;
[0010] Step 5: Use a wool brush to repair the uneven areas where the fluorescent light is applied.
[0011] Preferably, the rust inhibitor is a rust inhibitor sealant.
[0012] Preferably, the fluorescent agent is a stilbene fluorescent agent, a coumarin fluorescent agent, a pyrazoline fluorescent agent, a benzoxazine fluorescent agent or a phthalimide fluorescent agent.
[0013] Preferably, the rust inhibitor and the fluorescent agent are mixed by a mixer.
[0014] Preferably, the mixer stirs the fluorescent agent and the rust inhibitor at 800-1000 revolutions per minute for 10-15 minutes.
[0015] Preferably, the ratio of the rust inhibitor to the fluorescent agent is 20:1.
[0016] Preferably, the spraying equipment is an atomizing sprayer.
[0017] Preferably, the spraying time is 1-2s.
[0018] Preferably, the nozzle of the spraying equipment is 50 mm away from the surface of the copper foil roll.
[0019] Preferably, the fluorescent lamp is a low-pressure mercury lamp.
[0020] Compared with the prior art, the present invention has the following beneficial effects:
[0021] Improve detection accuracy: By adding fluorescent agent to the rust inhibitor, the rust inhibitor coating can emit fluorescence, making the coating effect more intuitive and convenient for observation and detection. Compared with traditional manual inspection and instrument detection methods, this method not only improves the accuracy of detection, but also reduces the influence of subjective factors and avoids misjudgment or missed judgment. Reduce detection cost: Compared with instrument detection, the addition of fluorescent agent makes the detection process simpler, without complicated operation and high equipment cost, thus greatly reducing the detection cost. This makes it convenient to effectively monitor and detect the coating effect of the rust inhibitor both in the laboratory and in a large-scale production environment. Realize real-time monitoring: Due to the addition of fluorescent agent, the rust inhibitor coating can emit fluorescence during the spraying process, so real-time monitoring of the spraying process can be achieved. Once a problem is found, it can be adjusted in time to avoid greater losses, thereby improving production efficiency and product quality. Improve product life: By effectively monitoring and detecting the coating effect of the rust inhibitor, the spraying quality of the rust inhibitor can be guaranteed, thereby effectively preventing the copper foil from rusting during storage and use and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 The present invention is a flowchart of a method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 technical personnel in this field without creative work are within the scope of protection of the present invention.
[0024] Example 1
[0025] See also Figure 1 The present invention provides a technical solution: a method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll, comprising the following steps:
[0026] Step 1: Prepare copper foil rolls and rust inhibitors;
[0027] Step 2: Select a colorless and transparent fluorescent agent and add the fluorescent agent to the rust inhibitor;
[0028] Step 3, spraying the rust preventive agent with fluorescent agent evenly on the end surface of the copper foil roll;
[0029] Step 4: Use fluorescent light to illuminate the copper foil roll after spraying the rust inhibitor for testing;
[0030] Step 5: Use a wool brush to repair the uneven areas where the fluorescent light is applied;
[0031] Through the above steps, the effect of spraying rust inhibitor on the end surface of copper foil products can be accurately detected, the detection accuracy is improved, the detection operation is simplified, the detection cost is reduced, and the coating effect of the rust inhibitor can be monitored in real time during the spraying process, and problems can be discovered and corrected in time, avoiding rust problems caused by uneven coating, improving product quality and service life, and improving detection accuracy: by adding fluorescent agent to the rust inhibitor, the rust inhibitor coating can emit fluorescence, making the coating effect more intuitive and easy to observe and detect. Compared with traditional manual inspection and instrument detection methods, this method not only improves the accuracy of detection, but also reduces the influence of subjective factors, avoids misjudgment or missed judgment, and reduces detection costs: Compared with instrument detection, The addition of fluorescent agent makes the detection process simpler, without the need for complicated operations and high equipment costs, thereby greatly reducing the detection cost. This makes it easy to effectively monitor and detect the coating effect of the rust inhibitor both in the laboratory and in a large-scale production environment, and achieve real-time monitoring: Due to the addition of fluorescent agent, the rust inhibitor coating can emit fluorescence during the spraying process, so real-time monitoring of the spraying process can be achieved. Once a problem is found, adjustments can be made in time to avoid greater losses, thereby improving production efficiency and product quality, and increasing product life: Through effective monitoring and detection of the rust inhibitor coating effect, the spraying quality of the rust inhibitor can be guaranteed, thereby effectively preventing the copper foil from rusting during storage and use, and extending its service life.
[0032] In this embodiment, the rust inhibitor is a rust-proof sealant. Rust inhibitor is a chemical used to prevent rust on metal surfaces. It can be divided into many types according to its characteristics and application methods. Each rust inhibitor has its own unique specific performance. The specific performance of water-soluble rust inhibitors: water is used as the main solvent, and other rust-proof substances are added to form an aqueous solution. This type of rust inhibitor usually has good water solubility and environmental protection, and is easy to clean and handle. They can form a protective film on the metal surface to effectively prevent the erosion of water and oxygen, thereby achieving the purpose of rust prevention. Application: It is suitable for various metal surfaces that need to be treated with rust prevention, especially for use in occasions with high environmental protection requirements. 2. The specific performance of oil-soluble rust inhibitors Performance: The main component is mineral oil or synthetic oil, which can form an oil film on the metal surface to prevent the metal from being corroded by water and oxygen in the form of a physical barrier. Oil-soluble rust inhibitors have good rust prevention and lubrication properties and can form a lasting protective layer on the metal surface. Application: Suitable for metal products that require a long storage period, such as mechanical equipment, automotive parts, etc. 3. Specific performance of emulsified rust inhibitors: divided into water-in-oil type and oil-in-water type. This type of rust inhibitor has both rust prevention and lubrication and cooling properties, so it is often used as a lubricating coolant for metal cutting. They can form a uniform lubricating film and rust prevention film on the metal surface, while reducing the cutting process. Friction and heat, Application: Widely used in metal cutting, grinding and other processing processes for rust prevention and lubrication, 4. Specific performance of vapor phase rust inhibitor: Also known as vapor phase corrosion inhibitor, it relies on the gas that slowly evaporates at room temperature to form a protective layer on the metal surface to achieve the purpose of rust prevention. Its anti-rust principle is similar to that of mothballs to prevent moths. It can form a dense protective layer on the metal surface to effectively prevent the penetration of moisture and oxygen. Application: Suitable for rust prevention of metal products in various closed or semi-closed spaces, such as packaging boxes, containers, etc. 5. Specific performance of wax film type rust inhibitor: It mainly forms a film on the surface of the substrate to prevent rust through paraffin, stearic acid and long-chain fatty ammonium salts. This type of rust inhibitor can form a layer on the metal surface Hard wax film with excellent anti-rust and weather resistance. Applications: Suitable for machinery stored in the open air and naval equipment that is often exposed to harsh environments such as seawater and smoke. In addition to being classified by solution characteristics, rust inhibitors can also be classified according to their action mechanisms, such as passivation type rust inhibitors, salt type rust inhibitors, and complex type rust inhibitors. The specific properties of these rust inhibitors have been described in the previous classification, so they will not be repeated. With the increase in market demand and the continuous development of anti-rust technology, many new types of rust inhibitors have also emerged, such as multifunctional rust inhibitors, environmentally friendly rust inhibitors, etc. These rust inhibitors not only have excellent anti-rust properties, but also have many other functions, such as lubrication and cleaning.
[0033] In this embodiment, the fluorescent agent is a diphenylethylene fluorescent agent, a coumarin fluorescent agent, a pyrazoline fluorescent agent, a benzoxazine fluorescent agent or a phthalimide fluorescent agent. The diphenylethylene fluorescent agent has blue fluorescence, the coumarin fluorescent agent has a coumarone basic structure and emits a strong blue fluorescence, the pyrazoline fluorescent agent has green fluorescence, the benzoxazine fluorescent agent has red fluorescence, and the phthalimide fluorescent agent has blue fluorescence.
[0034] In this embodiment, the rust inhibitor and the fluorescent agent are mixed by a mixer, and the mixer is a high-speed mixer, a paddle mixer, a double planetary mixer or a vacuum mixer. The high-speed mixer usually has a high rotation speed and can quickly mix the materials evenly. This type of mixer is suitable for materials with small particles and easy to disperse. In the mixing process of fluorescent agent and rust inhibitor, if both are fine powder or liquid, and need to quickly achieve a uniform mixing effect, a high-speed mixer may be a suitable choice. The propeller mixer promotes the mixing of materials by rotating the blades. It is suitable for materials with high viscosity or large particles. If one or both of the rust inhibitor or fluorescent agent is a viscous liquid or contains large particles, a propeller mixer may be more suitable for mixing. The double planetary mixer has two planetary shafts rotating against each other, which can achieve three-dimensional mixing of materials and a more uniform mixing effect. For occasions requiring highly uniform mixing, such as fine chemicals, polymer materials, etc., the double planetary mixer may be a better choice. If the rust inhibitor or fluorescent agent contains volatile components, or needs to be mixed in an anaerobic or low-oxygen environment, a vacuum mixer will be an ideal choice. The vacuum mixer can maintain a certain degree of vacuum during the mixing process, which helps to remove bubbles and volatile components in the material and improve the mixing quality.
[0035] In this embodiment, the mixer stirs the fluorescent agent and the rust inhibitor for 15 minutes at 1000 revolutions per minute.
[0036] In this embodiment, the ratio of the rust inhibitor to the fluorescent agent is 20:1.
[0037] In this embodiment, the spraying equipment is an atomizing sprayer.
[0038] In this embodiment, the spraying time is 2s.
[0039] In this embodiment, the nozzle of the spraying equipment is 50 mm away from the surface of the copper foil roll.
[0040] In this embodiment, the fluorescent lamp is a low-pressure mercury lamp. A low-pressure mercury lamp refers to a mercury vapor arc lamp with a mercury vapor pressure of 1.3-13 Pa (0.01-0.1 mmHg), a main emission wavelength of 253.7 nm (0.01 mmHg) in the ultraviolet region, and an equivalent energy of 471.0 kJ / mol (112.5 kcal / mol), accounting for 70% of the total energy of the lamp. At 25°C, the main rays of the lamp are 253.7 and 184.9 nm. Low-pressure mercury lamps have low light intensity and slow light curing speed, but low heat generation and can be used without cooling. They are widely used in printing plate making. They are mainly used as germicidal lamps, fluorescence analysis, and spectrometer wavelength standards. The scope of application of low-pressure mercury lamps is to be used for indoor air and the surface of objects and water and other liquids. Low-pressure mercury lamps eliminate pathogenic microorganisms in the external environment, cut off the transmission path of infectious diseases, and block the spread of infectious diseases, thereby achieving the purpose of protecting human health. Ultraviolet disinfection lamp is mainly used for air disinfection.
[0041] Example 2
[0042] See also Figure 1 The present invention provides a technical solution: a method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll, comprising the following steps:
[0043] Step 1: Prepare copper foil rolls and rust inhibitors;
[0044] Step 2: Select a colorless and transparent fluorescent agent and add the fluorescent agent to the rust inhibitor;
[0045] Step 3, spraying the rust preventive agent with fluorescent agent evenly on the end surface of the copper foil roll;
[0046] Step 4: Use fluorescent light to illuminate the copper foil roll after spraying the rust inhibitor for testing;
[0047] Step 5: Use a wool brush to repair the uneven areas where the fluorescent light is applied;
[0048] Through the above steps, the effect of spraying rust inhibitor on the end surface of copper foil products can be accurately detected, the detection accuracy is improved, the detection operation is simplified, the detection cost is reduced, and the coating effect of the rust inhibitor can be monitored in real time during the spraying process, and problems can be discovered and corrected in time, avoiding rust problems caused by uneven coating, improving product quality and service life, and improving detection accuracy: by adding fluorescent agent to the rust inhibitor, the rust inhibitor coating can emit fluorescence, making the coating effect more intuitive and easy to observe and detect. Compared with traditional manual inspection and instrument detection methods, this method not only improves the accuracy of detection, but also reduces the influence of subjective factors, avoids misjudgment or missed judgment, and reduces detection costs: Compared with instrument detection, The addition of fluorescent agent makes the detection process simpler, without the need for complicated operations and high equipment costs, thereby greatly reducing the detection cost. This makes it easy to effectively monitor and detect the coating effect of the rust inhibitor both in the laboratory and in a large-scale production environment, and achieve real-time monitoring: Due to the addition of fluorescent agent, the rust inhibitor coating can emit fluorescence during the spraying process, so real-time monitoring of the spraying process can be achieved. Once a problem is found, adjustments can be made in time to avoid greater losses, thereby improving production efficiency and product quality, and increasing product life: Through effective monitoring and detection of the rust inhibitor coating effect, the spraying quality of the rust inhibitor can be guaranteed, thereby effectively preventing the copper foil from rusting during storage and use, and extending its service life.
[0049] In this embodiment, the rust inhibitor is a rust-proof sealant. Rust inhibitor is a chemical used to prevent rust on metal surfaces. It can be divided into many types according to its characteristics and application methods. Each rust inhibitor has its own unique specific performance. The specific performance of water-soluble rust inhibitors: water is used as the main solvent, and other rust-proof substances are added to form an aqueous solution. This type of rust inhibitor usually has good water solubility and environmental protection, and is easy to clean and handle. They can form a protective film on the metal surface to effectively prevent the erosion of water and oxygen, thereby achieving the purpose of rust prevention. Application: It is suitable for various metal surfaces that need to be treated with rust prevention, especially for use in occasions with high environmental protection requirements. 2. The specific performance of oil-soluble rust inhibitors Performance: The main component is mineral oil or synthetic oil, which can form an oil film on the metal surface to prevent the metal from being corroded by water and oxygen in the form of a physical barrier. Oil-soluble rust inhibitors have good rust prevention and lubrication properties and can form a lasting protective layer on the metal surface. Application: Suitable for metal products that require a long storage period, such as mechanical equipment, automotive parts, etc. 3. Specific performance of emulsified rust inhibitors: divided into water-in-oil type and oil-in-water type. This type of rust inhibitor has both rust prevention and lubrication and cooling properties, so it is often used as a lubricating coolant for metal cutting. They can form a uniform lubricating film and rust prevention film on the metal surface, while reducing the cutting process. Friction and heat, Application: Widely used in metal cutting, grinding and other processing processes for rust prevention and lubrication, 4. Specific performance of vapor phase rust inhibitor: Also known as vapor phase corrosion inhibitor, it relies on the gas that slowly evaporates at room temperature to form a protective layer on the metal surface to achieve the purpose of rust prevention. Its anti-rust principle is similar to that of mothballs to prevent moths. It can form a dense protective layer on the metal surface to effectively prevent the penetration of moisture and oxygen. Application: Suitable for rust prevention of metal products in various closed or semi-closed spaces, such as packaging boxes, containers, etc. 5. Specific performance of wax film type rust inhibitor: It mainly forms a film on the surface of the substrate to prevent rust through paraffin, stearic acid and long-chain fatty ammonium salts. This type of rust inhibitor can form a layer on the metal surface Hard wax film with excellent anti-rust and weather resistance. Applications: Suitable for machinery stored in the open air and naval equipment that is often exposed to harsh environments such as seawater and smoke. In addition to being classified by solution characteristics, rust inhibitors can also be classified according to their action mechanisms, such as passivation type rust inhibitors, salt type rust inhibitors, and complex type rust inhibitors. The specific properties of these rust inhibitors have been described in the previous classification, so they will not be repeated. With the increase in market demand and the continuous development of anti-rust technology, many new types of rust inhibitors have also emerged, such as multifunctional rust inhibitors, environmentally friendly rust inhibitors, etc. These rust inhibitors not only have excellent anti-rust properties, but also have many other functions, such as lubrication and cleaning.
[0050] In this embodiment, the fluorescent agent is a diphenylethylene fluorescent agent, a coumarin fluorescent agent, a pyrazoline fluorescent agent, a benzoxazine fluorescent agent or a phthalimide fluorescent agent. The diphenylethylene fluorescent agent has blue fluorescence, the coumarin fluorescent agent has a coumarone basic structure and emits a strong blue fluorescence, the pyrazoline fluorescent agent has green fluorescence, the benzoxazine fluorescent agent has red fluorescence, and the phthalimide fluorescent agent has blue fluorescence.
[0051] In this embodiment, the rust inhibitor and the fluorescent agent are mixed by a mixer, and the mixer is a high-speed mixer, a paddle mixer, a double planetary mixer or a vacuum mixer. The high-speed mixer usually has a high rotation speed and can quickly mix the materials evenly. This type of mixer is suitable for materials with small particles and easy to disperse. In the mixing process of fluorescent agent and rust inhibitor, if both are fine powder or liquid, and need to quickly achieve a uniform mixing effect, a high-speed mixer may be a suitable choice. The propeller mixer promotes the mixing of materials by rotating the blades. It is suitable for materials with high viscosity or large particles. If one or both of the rust inhibitor or fluorescent agent is a viscous liquid or contains large particles, a propeller mixer may be more suitable for mixing. The double planetary mixer has two planetary shafts rotating against each other, which can achieve three-dimensional mixing of materials and a more uniform mixing effect. For occasions requiring highly uniform mixing, such as fine chemicals, polymer materials, etc., the double planetary mixer may be a better choice. If the rust inhibitor or fluorescent agent contains volatile components, or needs to be mixed in an anaerobic or low-oxygen environment, a vacuum mixer will be an ideal choice. The vacuum mixer can maintain a certain degree of vacuum during the mixing process, which helps to remove bubbles and volatile components in the material and improve the mixing quality.
[0052] In this embodiment, the mixer stirs the fluorescent agent and the rust inhibitor for 10-15 minutes at 800 revolutions per minute.
[0053] In this embodiment, the ratio of the rust inhibitor to the fluorescent agent is 20:1.
[0054] In this embodiment, the spraying equipment is an atomizing sprayer.
[0055] In this embodiment, the spraying time is 1 s.
[0056] In this embodiment, the nozzle of the spraying equipment is 50 mm away from the surface of the copper foil roll.
[0057] In this embodiment, the fluorescent lamp is a low-pressure mercury lamp. A low-pressure mercury lamp refers to a mercury vapor arc lamp with a mercury vapor pressure of 1.3-13 Pa (0.01-0.1 mmHg), a main emission wavelength of 253.7 nm (0.01 mmHg) in the ultraviolet region, and an equivalent energy of 471.0 kJ / mol (112.5 kcal / mol), accounting for 70% of the total energy of the lamp. At 25°C, the main rays of the lamp are 253.7 and 184.9 nm. Low-pressure mercury lamps have low light intensity and slow light curing speed, but low heat generation and can be used without cooling. They are widely used in printing plate making. They are mainly used as germicidal lamps, fluorescence analysis, and spectrometer wavelength standards. The scope of application of low-pressure mercury lamps is to be used for indoor air and the surface of objects and water and other liquids. Low-pressure mercury lamps eliminate pathogenic microorganisms in the external environment, cut off the transmission path of infectious diseases, and block the spread of infectious diseases, thereby achieving the purpose of protecting human health. Ultraviolet disinfection lamp is mainly used for air disinfection.
[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll, characterized in that: The steps include: Step 1: Prepare copper foil rolls and rust inhibitors; Step 2, selecting a colorless and transparent fluorescent agent, and adding the fluorescent agent to the rust inhibitor; Step three, spraying the rust preventive agent added with the fluorescent agent evenly on the end surface of the copper foil roll; Step 4, using a fluorescent lamp to illuminate the copper foil roll sprayed with the rust preventive agent for inspection; Step 5: Use a wool brush to repair the uneven areas where the fluorescent light is applied.
2. The method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll according to claim 1, characterized in that: The rust inhibitor is a rust-proof sealing agent.
3. The method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll according to claim 1, characterized in that: The fluorescent agent is a stilbene fluorescent agent, a coumarin fluorescent agent, a pyrazoline fluorescent agent, a benzoxazine fluorescent agent or a phthalimide fluorescent agent.
4. The method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll according to claim 1, characterized in that: The rust preventive agent and the fluorescent agent are mixed by a stirrer.
5. The method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll according to claim 1, characterized in that: The mixer stirs the fluorescent agent and the rust inhibitor for 10-15 minutes at 800-1000 revolutions per minute.
6. The method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll according to claim 1, characterized in that: The ratio of the rust inhibitor to the fluorescent agent is 20:
1.
7. The method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll according to claim 1, characterized in that: The spraying equipment is an atomizing sprayer.
8. The method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll according to claim 1, characterized in that: The spraying time is 1-2s.
9. The method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll according to claim 1, characterized in that: The spray head of the spraying equipment is 50 mm away from the surface of the copper foil roll.
10. The method for spraying and positioning a fluorescent agent on the end surface of a copper foil roll according to claim 1, characterized in that: The fluorescent lamp is a low-pressure mercury lamp.