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With the rapid development of digital printing technology, some people think that screen printing will be eliminated, but the technical innovation of UV screen printing inks has improved the performance of various aspects of screen printing, screen printing can be in the printing speed and adaptability to printing materials It is comparable to digital printing. Today, UV screen printing inks can be adapted to more and more special materials to ensure unique product printing and decorative effects that are superior to and beyond the print domain of four-color digital printers.
First, UV screen printing ink new varieties
In the early stages of developing UV inks, the choice of raw materials was greatly limited, which hindered the development and application of UV inks. But in the past 10 years, a large number of experimental studies have greatly expanded the performance of UV inks, and raw material suppliers have also noticed the potential benefits of the UV ink market. Now, UV ink manufacturers have thousands of raw materials to choose from. The joint efforts of raw material suppliers and ink manufacturers led many traditional inks, especially screen printing ink technology innovation, resulting in the emergence of a large number of new screen printing inks, such as: thermoforming UV inks; strong adhesion of multi-purpose UV Ink, can be used for printing of containers, POP (point of sale) images, labels, etc.; thick ink UV ink, including flash pigment UV ink, thixotropic special effect ink, liquid substrate-forming ink, etc.; magnetic ( Magneticreceptive) UV inks; fire-resistant UV inks; high-coverage UV inks; water-resistant UV inks; special effects imitation metal UV inks; long-lasting UV light inks. Some new inks are introduced below.
1, thermoforming UV ink
The research of thermoforming UV inks is in full swing. The inks have good adhesion and flexibility, can withstand stretching in thermoforming, and can be stretched by 8 inches or more in vacuum forming. Thermoformed UV ink formulations are modified to withstand thermal bending, stretching, and other post-processing on a wide variety of substrates such as styrene, polycarbonate, acrylic, PETG (diol modified PET), PVC
2, thick ink UV ink
The in-depth study and understanding of the photoinitiator reaction mechanism led the ink formulator to formulate more special UV inks, including ink products with high pigment content and the ability to form thick ink layers. Now, printers can choose 60-line/inch coarse screens and screens with a thickness of 300μm or more to print. Thick ink UV ink products of choice can also have thixotropic coatings and inks that can produce relief printing effects, and this ink is expected to have a significant increase in application.
3, molding substrate liquid UV ink
The highly extensible resins and monomers used in the formulation of thermoformed UV inks can also be used to configure a new type of thick ink UV ink-forming substrate liquid ink, which includes a liquid printing material that can be referred to as formula. In other words, after the ink is cured, it is both an image forming material and a printing material. Depending on the ink formulation used, pressure-sensitive or electrostatically adsorbed images can be produced after printing. This printing method that eliminates printing materials saves material and cutting costs.
4, magnetic UV ink
Another product that extends from thick ink UV ink technology is magnetic UV ink. The ink can be printed on a variety of substrate materials to make it magnetic, but this ink does not turn the image into a real magnet, but it can fix the printed image through the magnetic surface of the ink after curing. This ink is suitable for printing images that often need to be replaced, such as newsstands, shelves, and modular molds
5, special effects UV ink
The thick ink layer UV ink technology has led to the development of several special effects. The effects of flash UV inks combined with large particles of light particles can produce sparkling effects on printed patterns. This type of ink requires coarse mesh screen printing to make glitter particles Can pass. Another newly developed ink is a long-lasting light-emitting ink that can emit light for more than 14 hours. Other UV ink formulations use a series of colors of pearl-like, spark-like, or metallic-colored particles that are used according to a rough classification of the substrate. High ink content inks allow printers to consider printing on dark substrates and guarantee better results
6, fire-resistant UV ink
Another UV screen printing ink technology research hotspot is the fire-resistant UV ink, which is proposed for the safety of some consumers concerned with the printed matter. The ink and the substrate manufacturer cooperate to research the solution. Although UV inks have a relatively high flash point, UV inks decompose and burn once they exceed the combustion limit temperature. There are two ways to slow down the burning of UV inks. One is to use inhibitors in the ink to prevent burning, reduce or even eliminate the flame. Another approach is to design UV ink formulations that mimic foam-type fireproof coatings. In the case of flame-proof or high-temperature flame-retardant coatings, the coating is strongly foamed and carbonized to block oxygen and prevent combustion and flame suppression. It should be borne in mind that fireproof UV ink alone cannot completely prevent fire and substrate swell performance
Second, UV screen printing ink
Recent technological innovations have enabled ink manufacturers to produce UV inks with good adhesion, durability, flexibility, and water resistance. Recent advances in UV ink technology have resulted in the following markets and applications
1. Application in POP posters
In the past, only multipurpose POP inks showed good adhesion on a variety of substrates including paper, cardboard, styrene, stretched polyvinyl chloride, and even some hard-to-adhere polyolefins. However, a few years ago, the emergence of single-component UV inks completely changed the situation, the ink is well attached to polyolefin materials (PE, PP), and has good performance characteristics, such as in the label printing The excellent ink film flexibility and water resistance exhibited in such fields. This new type of ink eliminates the use of additives and reduces the waste of similar two-component inks. It also reduces ink inventory and improves economic efficiency.
2, in the container application
The greatest advancement in UV screen printing ink technology should be in container printing. In the past, a variety of additives and ink systems were required to accommodate different types of plastic containers, and plastic containers for HDPE, LDPE, PET, PVC, PP, and other materials can now be decorated with one-component, non-additive inks. These inks provide better hiding power and chemical solvent resistance, while also eliminating the use of additives and catalysts. 3, the application of hygroscopic plastics
The development of multifunctional monomers is one of the latest developments in UV ink technology, and ink manufacturers are using it to solve the problems of printing hygroscopic plastics, such as polyethylene labels and HDPE materials. These substrates are prone to moisture absorption, and water vapor forms a fine barrier layer between the ink and the surface of the substrate, affecting the adhesion of the ink. Therefore, the ink layer on these materials is easy to wear and peel off. The use of inks formulated with this new type of multifunctional monomer greatly enhances its water resistance on the hygroscopic material, the curing speed is faster, the gloss of the ink layer is higher and firmer, and the ink layer is almost completely water resistant.
4, UV screen printing ink development
As raw materials continue to be developed, it does not seem to be clear where future UV curing products will develop. In the early years, UV inks added various additives in order to improve performance. Printers had to play the role of chemists in order to obtain good ink performance. But today, ink manufacturers can develop products based on customer needs and use more advanced technologies in ink production. Raw material suppliers also develop raw materials based on the needs of the ink designer, unlike the first few types of raw materials that were available to designers.
Increased competition has forced ink manufacturers to adopt innovative technologies to improve ink performance while developing new areas suitable for UV screen printing. In general, the UV screen printing market has grown significantly thanks to the development of new UV inks. As raw material suppliers and ink manufacturers work together to develop new products and develop new performance standards, this trend in the UV screen printing market will undoubtedly continue.
First, UV screen printing ink new varieties
In the early stages of developing UV inks, the choice of raw materials was greatly limited, which hindered the development and application of UV inks. But in the past 10 years, a large number of experimental studies have greatly expanded the performance of UV inks, and raw material suppliers have also noticed the potential benefits of the UV ink market. Now, UV ink manufacturers have thousands of raw materials to choose from. The joint efforts of raw material suppliers and ink manufacturers led many traditional inks, especially screen printing ink technology innovation, resulting in the emergence of a large number of new screen printing inks, such as: thermoforming UV inks; strong adhesion of multi-purpose UV Ink, can be used for printing of containers, POP (point of sale) images, labels, etc.; thick ink UV ink, including flash pigment UV ink, thixotropic special effect ink, liquid substrate-forming ink, etc.; magnetic ( Magneticreceptive) UV inks; fire-resistant UV inks; high-coverage UV inks; water-resistant UV inks; special effects imitation metal UV inks; long-lasting UV light inks. Some new inks are introduced below.
1, thermoforming UV ink
The research of thermoforming UV inks is in full swing. The inks have good adhesion and flexibility, can withstand stretching in thermoforming, and can be stretched by 8 inches or more in vacuum forming. Thermoformed UV ink formulations are modified to withstand thermal bending, stretching, and other post-processing on a wide variety of substrates such as styrene, polycarbonate, acrylic, PETG (diol modified PET), PVC
2, thick ink UV ink
The in-depth study and understanding of the photoinitiator reaction mechanism led the ink formulator to formulate more special UV inks, including ink products with high pigment content and the ability to form thick ink layers. Now, printers can choose 60-line/inch coarse screens and screens with a thickness of 300μm or more to print. Thick ink UV ink products of choice can also have thixotropic coatings and inks that can produce relief printing effects, and this ink is expected to have a significant increase in application.
3, molding substrate liquid UV ink
The highly extensible resins and monomers used in the formulation of thermoformed UV inks can also be used to configure a new type of thick ink UV ink-forming substrate liquid ink, which includes a liquid printing material that can be referred to as formula. In other words, after the ink is cured, it is both an image forming material and a printing material. Depending on the ink formulation used, pressure-sensitive or electrostatically adsorbed images can be produced after printing. This printing method that eliminates printing materials saves material and cutting costs.
4, magnetic UV ink
Another product that extends from thick ink UV ink technology is magnetic UV ink. The ink can be printed on a variety of substrate materials to make it magnetic, but this ink does not turn the image into a real magnet, but it can fix the printed image through the magnetic surface of the ink after curing. This ink is suitable for printing images that often need to be replaced, such as newsstands, shelves, and modular molds
5, special effects UV ink
The thick ink layer UV ink technology has led to the development of several special effects. The effects of flash UV inks combined with large particles of light particles can produce sparkling effects on printed patterns. This type of ink requires coarse mesh screen printing to make glitter particles Can pass. Another newly developed ink is a long-lasting light-emitting ink that can emit light for more than 14 hours. Other UV ink formulations use a series of colors of pearl-like, spark-like, or metallic-colored particles that are used according to a rough classification of the substrate. High ink content inks allow printers to consider printing on dark substrates and guarantee better results
6, fire-resistant UV ink
Another UV screen printing ink technology research hotspot is the fire-resistant UV ink, which is proposed for the safety of some consumers concerned with the printed matter. The ink and the substrate manufacturer cooperate to research the solution. Although UV inks have a relatively high flash point, UV inks decompose and burn once they exceed the combustion limit temperature. There are two ways to slow down the burning of UV inks. One is to use inhibitors in the ink to prevent burning, reduce or even eliminate the flame. Another approach is to design UV ink formulations that mimic foam-type fireproof coatings. In the case of flame-proof or high-temperature flame-retardant coatings, the coating is strongly foamed and carbonized to block oxygen and prevent combustion and flame suppression. It should be borne in mind that fireproof UV ink alone cannot completely prevent fire and substrate swell performance
Second, UV screen printing ink
Recent technological innovations have enabled ink manufacturers to produce UV inks with good adhesion, durability, flexibility, and water resistance. Recent advances in UV ink technology have resulted in the following markets and applications
1. Application in POP posters
In the past, only multipurpose POP inks showed good adhesion on a variety of substrates including paper, cardboard, styrene, stretched polyvinyl chloride, and even some hard-to-adhere polyolefins. However, a few years ago, the emergence of single-component UV inks completely changed the situation, the ink is well attached to polyolefin materials (PE, PP), and has good performance characteristics, such as in the label printing The excellent ink film flexibility and water resistance exhibited in such fields. This new type of ink eliminates the use of additives and reduces the waste of similar two-component inks. It also reduces ink inventory and improves economic efficiency.
2, in the container application
The greatest advancement in UV screen printing ink technology should be in container printing. In the past, a variety of additives and ink systems were required to accommodate different types of plastic containers, and plastic containers for HDPE, LDPE, PET, PVC, PP, and other materials can now be decorated with one-component, non-additive inks. These inks provide better hiding power and chemical solvent resistance, while also eliminating the use of additives and catalysts. 3, the application of hygroscopic plastics
The development of multifunctional monomers is one of the latest developments in UV ink technology, and ink manufacturers are using it to solve the problems of printing hygroscopic plastics, such as polyethylene labels and HDPE materials. These substrates are prone to moisture absorption, and water vapor forms a fine barrier layer between the ink and the surface of the substrate, affecting the adhesion of the ink. Therefore, the ink layer on these materials is easy to wear and peel off. The use of inks formulated with this new type of multifunctional monomer greatly enhances its water resistance on the hygroscopic material, the curing speed is faster, the gloss of the ink layer is higher and firmer, and the ink layer is almost completely water resistant.
4, UV screen printing ink development
As raw materials continue to be developed, it does not seem to be clear where future UV curing products will develop. In the early years, UV inks added various additives in order to improve performance. Printers had to play the role of chemists in order to obtain good ink performance. But today, ink manufacturers can develop products based on customer needs and use more advanced technologies in ink production. Raw material suppliers also develop raw materials based on the needs of the ink designer, unlike the first few types of raw materials that were available to designers.
Increased competition has forced ink manufacturers to adopt innovative technologies to improve ink performance while developing new areas suitable for UV screen printing. In general, the UV screen printing market has grown significantly thanks to the development of new UV inks. As raw material suppliers and ink manufacturers work together to develop new products and develop new performance standards, this trend in the UV screen printing market will undoubtedly continue.
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