The method and principle of UV matte film varnish is different from the ordinary. It is through the ultraviolet light to make the internal components produce photopolymerized instantaneous curing, which is different from the common methods of evaporation, oxidation and infiltration, so there are many places that need attention:
(1) It must be confirmed whether the ink layer is really thorough
Due to various reasons, such as too thick ink layer, poor transparency of dark color, insufficient light irradiation, too fast speed, etc., the UV matte film layer will produce a false appearance, the surface seems to have been, and the ink layer is not inside To do it thoroughly, this kind of spuriousness will cause the product to stick for a while after it is put into use. When it is used, there will be a lot of odors, poor applicability and poor rubbing. Sometimes it will even cause the product to be scrapped in batches, causing huge losses. To pay special attention to this issue, there are several specific methods: The first is to use transparent as a peel test, stick the paper to the ink layer and then pull it down to see if the layer will be stuck. However, it is not completely, and vice versa, it is good. The second method can use friction as a friction test. If the deinking is severe, it is not complete; otherwise, it is good.
2) UV matte film light oil
Ultraviolet light for UV matte film is emitted by UV lamp. UV lamp used now separates mercury lamp and metal halide lamp. These two lamps have different light waves due to different filling media. High pressure mercury lamp The wavelength is 200-400 MM, and the wavelength of the metal halogen lamp is 250-450 MM. Since the light wave is different, the effect is also different. If you want to strengthen the surface, then use a high-pressure mercury lamp is better, such as achromatic or printed light is better; if you print dark series or poor transparency, you need to strengthen the interior with a metal halide lamp is better.
Comprehensive advantages and disadvantages of these two types of lamps are generally mixed and used in the course of use, which not only enhances the surface hardening but also strengthens the interior. However, when used together, the specifications of the ultraviolet power supply should be fully considered whether it is compatible with the lamp.
(3) Additives and safety precautions for UV matte film varnish
UV matte film using auxiliaries must be dedicated, and can not use common diluents and other additives, otherwise it will have adverse consequences such as poor, poor delivery, additives must be limited before use, not too much, generally In the case of control within 5% and manufactured by different manufacturers, the composition of the auxiliary components used is also not the same, and it is preferable to use the one provided by the manufacturer or recommended, and the use of different manufacturers can not be mixed.
UV matte film has its special agent, can not use gasoline, kerosene or alcohol. Because UV matte film has a strong solvency, if you accidentally touch the skin or splash your eyes, it may cause skin irritation or burns. Therefore, during use, care should be taken to wear gloves and wear protective glasses to prevent burns if necessary. Eyes, in addition, if the UV matte film is inadvertently adhered, the non-UV paint surface coating cannot be wiped with a UV cleaner, otherwise the surface will be dissolved and rubbed off.
IV. Storage Matters for UV Matt Film Varnish
Because of its special principle and chemical composition, UV matte film should pay special attention to avoiding light and heat during storage.
Because the solar spectrum contains a large amount of ultraviolet rays, when sunlight directly or indirectly irradiates the surface, the UV matte film surface oil hardens and crusts, resulting in waste and printing failure. At the same time, long-term fluorescent lamp irradiation may also cause hardening due to generation of ultraviolet rays. Therefore, it is best to use isolated fluorescent lamps, especially the lighting source on the ink fountain, so the UV matte film should be protected from light.
At the same time over 30 ° C will cause a chemical reaction, one of the consequences is hardening; the other is to produce a gel to increase the viscosity, printability, especially the remaining ink used. Therefore, UV matte film varnish should be stored in a cool place as much as possible.
(1) It must be confirmed whether the ink layer is really thorough
Due to various reasons, such as too thick ink layer, poor transparency of dark color, insufficient light irradiation, too fast speed, etc., the UV matte film layer will produce a false appearance, the surface seems to have been, and the ink layer is not inside To do it thoroughly, this kind of spuriousness will cause the product to stick for a while after it is put into use. When it is used, there will be a lot of odors, poor applicability and poor rubbing. Sometimes it will even cause the product to be scrapped in batches, causing huge losses. To pay special attention to this issue, there are several specific methods: The first is to use transparent as a peel test, stick the paper to the ink layer and then pull it down to see if the layer will be stuck. However, it is not completely, and vice versa, it is good. The second method can use friction as a friction test. If the deinking is severe, it is not complete; otherwise, it is good.
2) UV matte film light oil
Ultraviolet light for UV matte film is emitted by UV lamp. UV lamp used now separates mercury lamp and metal halide lamp. These two lamps have different light waves due to different filling media. High pressure mercury lamp The wavelength is 200-400 MM, and the wavelength of the metal halogen lamp is 250-450 MM. Since the light wave is different, the effect is also different. If you want to strengthen the surface, then use a high-pressure mercury lamp is better, such as achromatic or printed light is better; if you print dark series or poor transparency, you need to strengthen the interior with a metal halide lamp is better.
Comprehensive advantages and disadvantages of these two types of lamps are generally mixed and used in the course of use, which not only enhances the surface hardening but also strengthens the interior. However, when used together, the specifications of the ultraviolet power supply should be fully considered whether it is compatible with the lamp.
(3) Additives and safety precautions for UV matte film varnish
UV matte film using auxiliaries must be dedicated, and can not use common diluents and other additives, otherwise it will have adverse consequences such as poor, poor delivery, additives must be limited before use, not too much, generally In the case of control within 5% and manufactured by different manufacturers, the composition of the auxiliary components used is also not the same, and it is preferable to use the one provided by the manufacturer or recommended, and the use of different manufacturers can not be mixed.
UV matte film has its special agent, can not use gasoline, kerosene or alcohol. Because UV matte film has a strong solvency, if you accidentally touch the skin or splash your eyes, it may cause skin irritation or burns. Therefore, during use, care should be taken to wear gloves and wear protective glasses to prevent burns if necessary. Eyes, in addition, if the UV matte film is inadvertently adhered, the non-UV paint surface coating cannot be wiped with a UV cleaner, otherwise the surface will be dissolved and rubbed off.
IV. Storage Matters for UV Matt Film Varnish
Because of its special principle and chemical composition, UV matte film should pay special attention to avoiding light and heat during storage.
Because the solar spectrum contains a large amount of ultraviolet rays, when sunlight directly or indirectly irradiates the surface, the UV matte film surface oil hardens and crusts, resulting in waste and printing failure. At the same time, long-term fluorescent lamp irradiation may also cause hardening due to generation of ultraviolet rays. Therefore, it is best to use isolated fluorescent lamps, especially the lighting source on the ink fountain, so the UV matte film should be protected from light.
At the same time over 30 ° C will cause a chemical reaction, one of the consequences is hardening; the other is to produce a gel to increase the viscosity, printability, especially the remaining ink used. Therefore, UV matte film varnish should be stored in a cool place as much as possible.
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