More than two decades ago, Manroland's first on-line coating press, which was introduced to the business community, was warmly welcomed by packaging and general commercial printers. From now on, gloss and surface protection can be enhanced by polishing the packaging and advanced brochures without additional processes. In recent years, Manroland has continued to expand the range of applications for paint enhancement: gold, silver, pearlescent effects, special gloss or matte effects, protection, embossing, fragrance, etc. All of these coatings can be applied in-line at the specified thickness. The driving force behind these encouraging developments comes from the emergence of presses with two coater units and the use of closed blade or roll coating technology.
Now, these technologies are reflected on all manroland presses, and all manroland presses can provide economical, environmentally-friendly systems.
Online coating with water-based dispersion coatings has become the standard application. For example, spot color polishing can really enhance the appearance of printed products.
Ultra-violet (UV) coating is becoming increasingly popular when extremely high gloss is required. This type of glazing coating is resistant to rubbing and provides not only a good protective layer but also a glossy surface that makes it visually appealing. Packaging printers are very interested in these advantages. Therefore, the large format printing presses naturally provide this special reinforcement structure when the medium format printers prove the effectiveness of these reforms (two coater units plus multiple drying units and tail drying). Large-format printer users are generally interested in the method of UV glazing after printing with ordinary inks in folding carton production.
For best results, methods such as printing presses, coaters, and drying must meet certain prerequisites. The matching of the composition of the press with the individual user's specific requirements is the only way to obtain the best results.
Note the mesh of the anilox roller Manroland, in collaboration with its customers and supply partners, developed a closed scraper method in 1993. This method ensures a very uniform coating thickness. Anilox rollers with different carrying capacities ensure an accurate amount of glazing and can be carried out repeatedly. The amount of paint carried by the anilox roller differs depending on the job. The normal rule is between 6 and 30 cubic centimeters per square meter.
In fact, only 25% to 35% of the wet paint of the above nominal load is transferred to the surface of the substrate. Different screen conditions on the surface of the anilox roller allow the machine to transfer different required amounts of coating. If you pay attention to the anilox roller for a long time and use it reasonably, you can ensure the stability of product quality.
Note that the combination of circulatory systems must meet the requirements for handling different coatings. The circulatory system of the coating must be the most appropriate combination. The stable quality of the coating is related to the amount of paint introduced, the amount of storage, the pumping principle, and the stability of the temperature. These factors must be matched with the glazing unit used.
Note that the equipment cleaning before changing the paint is constantly increasing due to various different application situations. Manroland has several completely separated glazing circuits for coating units. It can quickly and economically switch from one coating method to another. Another coating method. This not only saves preparation time but also saves paint and cleaning agents. Decentralized coatings are not compatible with UV coatings. At the same time, changing from pigmented to transparent coatings requires thorough cleaning. When changing paint, cleaning is very important to ensure stable quality.
On a large-format flow coating surface. Different changes in light are particularly noticeable. Therefore, it is very important to uniformly coat the coating by maintaining uniform brightness throughout the entire surface.
However, the fading effect may cause uneven brightness on the surface of the printed product. Due to the difference in printing time and the different physical processes that take place, the ink and paint layers dry at different rates. When a different material layer is mixed and a volume change occurs, a gas is emitted and its surface is deformed. Cracks formed as a result of deformation will result in reduced gloss.
Note that the angle at which gloss is measured can be measured with a certain degree of reflectivity. The "mirror surface" reflects 100% of the light, reflecting only a portion of the light due to the quality of the coating surface. In view of the degree of gloss, the angle of measurement must be chosen so as to provide reliable gloss change data. The angle of measurement is very important, because the pigment penetrates deep and has a phenomenon of dispersion. The human eye has a stronger response to gloss on a black background.
Note that the method of measuring scratch resistance and adhesion The scratch resistance and adhesion characteristics of a coating are important indicators of the post-printing process and are important indicators of the durability of a printed product. Users sometimes use unscientific methods to determine these properties, such as scratching with nails or sticking with tape. These are subjective judgments. They rely mainly on the judgment of each client. They have no measurable or reproducible data, but they can be used as a reference. There are no objective test standards. After production, if the coating's adhesion remains stable after a few days, it can only be maintained for several hours. During this period, the ink is oxidatively dry and the gas is produced. The gas builds up between the ink layer and the coating, thereby breaking the bond. Therefore, it is reasonable to check the degree of adhesion only a few days after printing. Acetone is very suitable for testing the degree of curing of the UV coating; wipe it with a cloth impregnated with acetone, and if it does not cure well, the coating will dissolve.
The German Printing Association recommends test devices to check the ability to resist peeling and sticking. The resistance of printed matter can be tested according to the methods provided by "German Industrial Standard" DIN 16524 and DIN 16525. (Lan)
Now, these technologies are reflected on all manroland presses, and all manroland presses can provide economical, environmentally-friendly systems.
Online coating with water-based dispersion coatings has become the standard application. For example, spot color polishing can really enhance the appearance of printed products.
Ultra-violet (UV) coating is becoming increasingly popular when extremely high gloss is required. This type of glazing coating is resistant to rubbing and provides not only a good protective layer but also a glossy surface that makes it visually appealing. Packaging printers are very interested in these advantages. Therefore, the large format printing presses naturally provide this special reinforcement structure when the medium format printers prove the effectiveness of these reforms (two coater units plus multiple drying units and tail drying). Large-format printer users are generally interested in the method of UV glazing after printing with ordinary inks in folding carton production.
For best results, methods such as printing presses, coaters, and drying must meet certain prerequisites. The matching of the composition of the press with the individual user's specific requirements is the only way to obtain the best results.
Note the mesh of the anilox roller Manroland, in collaboration with its customers and supply partners, developed a closed scraper method in 1993. This method ensures a very uniform coating thickness. Anilox rollers with different carrying capacities ensure an accurate amount of glazing and can be carried out repeatedly. The amount of paint carried by the anilox roller differs depending on the job. The normal rule is between 6 and 30 cubic centimeters per square meter.
In fact, only 25% to 35% of the wet paint of the above nominal load is transferred to the surface of the substrate. Different screen conditions on the surface of the anilox roller allow the machine to transfer different required amounts of coating. If you pay attention to the anilox roller for a long time and use it reasonably, you can ensure the stability of product quality.
Note that the combination of circulatory systems must meet the requirements for handling different coatings. The circulatory system of the coating must be the most appropriate combination. The stable quality of the coating is related to the amount of paint introduced, the amount of storage, the pumping principle, and the stability of the temperature. These factors must be matched with the glazing unit used.
Note that the equipment cleaning before changing the paint is constantly increasing due to various different application situations. Manroland has several completely separated glazing circuits for coating units. It can quickly and economically switch from one coating method to another. Another coating method. This not only saves preparation time but also saves paint and cleaning agents. Decentralized coatings are not compatible with UV coatings. At the same time, changing from pigmented to transparent coatings requires thorough cleaning. When changing paint, cleaning is very important to ensure stable quality.
On a large-format flow coating surface. Different changes in light are particularly noticeable. Therefore, it is very important to uniformly coat the coating by maintaining uniform brightness throughout the entire surface.
However, the fading effect may cause uneven brightness on the surface of the printed product. Due to the difference in printing time and the different physical processes that take place, the ink and paint layers dry at different rates. When a different material layer is mixed and a volume change occurs, a gas is emitted and its surface is deformed. Cracks formed as a result of deformation will result in reduced gloss.
Note that the angle at which gloss is measured can be measured with a certain degree of reflectivity. The "mirror surface" reflects 100% of the light, reflecting only a portion of the light due to the quality of the coating surface. In view of the degree of gloss, the angle of measurement must be chosen so as to provide reliable gloss change data. The angle of measurement is very important, because the pigment penetrates deep and has a phenomenon of dispersion. The human eye has a stronger response to gloss on a black background.
Note that the method of measuring scratch resistance and adhesion The scratch resistance and adhesion characteristics of a coating are important indicators of the post-printing process and are important indicators of the durability of a printed product. Users sometimes use unscientific methods to determine these properties, such as scratching with nails or sticking with tape. These are subjective judgments. They rely mainly on the judgment of each client. They have no measurable or reproducible data, but they can be used as a reference. There are no objective test standards. After production, if the coating's adhesion remains stable after a few days, it can only be maintained for several hours. During this period, the ink is oxidatively dry and the gas is produced. The gas builds up between the ink layer and the coating, thereby breaking the bond. Therefore, it is reasonable to check the degree of adhesion only a few days after printing. Acetone is very suitable for testing the degree of curing of the UV coating; wipe it with a cloth impregnated with acetone, and if it does not cure well, the coating will dissolve.
The German Printing Association recommends test devices to check the ability to resist peeling and sticking. The resistance of printed matter can be tested according to the methods provided by "German Industrial Standard" DIN 16524 and DIN 16525. (Lan)
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