3, performance has been improved, debugging time is greatly reduced. Compared with ordinary flexo plates, the most outstanding feature of nyloflex ACE plate and digiflex ACE D digital flexo plate is that the development time of plate is shorter. According to many printing companies using ACE plates, the development and drying of ACE plates (1.70 mm and 1.14 mm thick) and ACE D plates (1.70 mm and 1.14 mm thick) can be completely eliminated within 80 minutes. Completed, greatly improving the production efficiency. The uniqueness of the ACE plate is that it has a special layer of pretreatment underlay which is the basis for ensuring a stable optimal back exposure time. Since the length of the back exposure time determines the relief height of the printing plate, prolonging the back exposure time enables the plate making personnel to better control the relief height of the printing plate and improve the fixing force of the dot, and the fine printing half. This is especially important when you're tinting images or fine lines. The unique structure of nyloflex ACE plate guarantees the bond strength between the relief layer and the bottom layer and therefore has a high printing stability. Nyloflex ACE plate has high sensitization performance to UV-A light. Moreover, this plate also has the characteristics of short main exposure time, large exposure latitude, and clear and complete dots.
Due to the optimization and improvement of the solubility of the raw materials used in the plate, it is also possible to shorten and save the processing time when the novel photopolymer plate is used. Practice has proved that compared with nyloflex FAH 114 media and its competitors, the ACE media has the shortest flush development time. In the laboratory, BASF's researchers used nyloflex FШ and nyloflex FIV rinsing devices and non-polluting environment-friendly solvents to extensively test the development speed of many different media. The test results showed that: The rinsing speed is twice that of the slowest plate, which means that the ACE plate can save 50% of the flushing time (the embossed height of the plate is 0.06~0.08 mm). Correspondingly, using ACE plates can also reduce the drying time by 65%. In BASF's laboratory, the researchers determined the drying time based on a comparison of various image elements and their drying performance. In general, when using an ACE plate with a thickness of 1.14 mm and 1.70 mm, the drying time is generally 45 minutes if the drying temperature is 65°C. The overall thickness error of the plate is reduced, and the installation speed on the machine is also increased, thus greatly reducing the commissioning time. Compared with ordinary flexo plates, nyloflex ACE plates can make the platemaking company's platemaking efficiency and production capacity by 50%. Of course, the increase in production capacity also depends on the type, structure and working conditions of the plate making equipment used. And other factors.
Main test data of ACE media
Recommended relief height 0.02"-0.044"
Back exposure time 25~90 seconds Main exposure time 7~20 minutes (depending on the specific conditions of the exposure device)
Washing speed 130~280mm/min Drying time 30~60min (Determined according to thickness of plate and structure of drying device)
Post-exposure time (UVA) 7~10 minutes Detach/after-treatment (UVC) 10~15 minutes (When post-processing and post-exposure are performed at the same time, it can be set to 15 minutes.)
Note: The exposure time depends on the type of device, the batch of media, the intensity of the lamp, and the level of detail in the image. The flushing time depends on the structure of the device, the type of brush, the pressure of the brush, the type of solvent, the concentration of the solvent, and the temperature of the solvent.
4, improve the ink transfer performance. As mentioned earlier, due to the optimization of the solubility of the raw materials used in the plates (optimization of the surface properties) and the great improvement of the production process and production methods, even during the printing process The lighter printing pressure applied also ensures that the photopolymer sheet achieves a uniform and smooth transfer of the ink layer. In addition, the weight of the ink layer carried by the nyloflex ACE plate and the ink release characteristics of the plate are also important factors affecting the color strength and ink layer thickness. In the actual production process, the thickness of the transferred wet ink film will vary from 1 to 15 micrometers due to the differences in the printing machine, the rubber roll, the anilox roll structure, the substrate material, and the experience of the printing operator. However, the results of testing nyloflex ACE plates under various printing conditions show that when printing with this plate, they can be satisfied with various substrate materials such as plastic films and paper. The thickness of the ink layer and the hiding power of the ink; this plate can also clearly print intaglio, fine lines of Yang and Yang and small dots; at the same time, the text surface of the nyloflex ACE plate does not accumulate dust during the entire printing process. It can always be kept clean and tidy, which of course reduces the number of times and the time it takes to stop printing, not only simplifies operations, but also helps to increase production efficiency.
5, halftone image printing better and higher quality. In order to determine the best combination of plate-tape (or plate-sleeve), BASF's researchers conducted a series of tests and studies. First, use a batch of test plates to make plates, then paste them with different tape materials, and then perform print tests on different printing machines (CI, stacked, and unit type), and change the setting parameters of the printing presses, inks System and substrate materials. The printed images on each test plate were the same, that is to say, the same file was used for plate making, and two kinds of screen lines were tested. They were 47 lines/cm and 60 lines/cm (120 Lpi and 150 lpi). Moreover, the platemaking parameters are also kept constant. When comparing various combinations of dot-divergent curves with ink transfer values, it was found that in order to control the dot gain rate at around 10% while achieving a higher ink transfer rate, it is obvious that rigid compressible tapes are used and Hard compressible sleeves are the most suitable. All scientific tests and observations have proven that nyloflex ACE photopolymer plates can obtain stable prints, even if the printing pressure is slightly changed during the printing process will not affect the consistency of the print, which is very suitable for long-lived Printing can also improve the printing accuracy of small jobs and reduce the wear of printing plates. Thanks to the high elasticity of the nyloflex ACE plate, it is possible to increase the efficiency of the plate, especially when installing plates on rollers with a smaller diameter. The test results also show that the nyloflex ACE media is very suitable for butt.
Second, digital plate making with nyloflex ACE D The digiflex ACE D plate was introduced and put into use in November 2000. The surface of this plate is coated with a photopolymer film (which can be used as a "mask"). During exposure imaging, the laser ablates the "mask" layer to form a certain dot shape, followed by the main exposure. . In the main exposure process, the UV light exposes the underlying photopolymer (without any scattering or diffuse reflection) through the ablated "mask" layer, just like the ACE D plate, after the exposure of the dots formed. The shoulders are steep, the edges are clear, and tightly integrated with the pre-cured layers. In general, the photoinitiator contains unsaturated double bonds in its molecular structure. During the process of UV exposure to form dots, the oxygen in the air can be combined with some unsaturated bonds, and the molecular structure of the photoinitiator gradually becomes Saturation slows the speed of photochemical reactions and ultimately affects the polymerization properties and polymerization of the plates. The presence of oxygen not only has a very important role in preventing the cross-linking reaction (induced by UV-A light), but it also has a certain influence on the quality of the resulting dots. The use of ACE D Plates results in extremely clear and well-trimmed outlets and reduces dot gains.
With digiflex ACE D plates combined with hard compressible tape or hard compressible sleeves, higher quality, better-quality halftone printed images can be obtained. Compared with ordinary digital flexo plates, digiflex ACE D digital flexo plate has a lower dot gain rate of only 10% to 15%.
Third, anti-ozone performance When the water-based ink on some film materials such as PE and PP film printing, because these films are non-polar materials, the surface energy is very low, very strong inertness, so printability is relatively poor, so Before printing, it is sometimes necessary to perform surface pretreatment of these thin film materials with an on-line corona treatment device to increase the surface energy of the thin film material and improve its printability. However, most corona treatment devices radiate ozone to varying degrees during the process, which may have a certain impact on the polymer plate material, causing cracks in the surface of the plate material. These small cracks are caused by the splitting of ozone molecules into reactive compounds and destroying the long molecular chains of the printing plate. However, the raw material used in the nyloflex ACE plate is a new type of compound that does not have this problem at all. Because the nyloflex ACE plate has higher ink transfer performance and excellent ozone resistance, this plate can exhibit excellent printability when printed using water-based inks with good transfer performance. , And the stability is also quite high.
IV. Summary In order to reduce production costs as much as possible, while at the same time being able to meet the needs of customers to the highest extent, to provide customers with quality products and services, at present, some printing industry leading companies and plate-making companies have begun to switch to nyloflex ACE version. Wood and digiflex ACE D digital plates, and more and more companies are also following suit. In the production process, if printing inks produced by BASF company are used with this ACE plate (in the whole experiment conducted by BASF, the researchers are basically printing tests with printing inks produced by BASF. ), we can provide customers with a set of scientific, complete flexo printing solutions, so that customers can obtain high-quality print.
In summary, the advantages of nyloflex ACE flexo plate and digiflex ACE D digital flexo plate can be summarized as follows: large exposure latitude, imaging accuracy, steep and straight shoulders, dimensional stability, high print rate, and good resistance to ozone Performance and so on. The new nyloflex ACE flexo plate and digiflex ACE D digital flexo plate produced by BASF Printing Systems can provide customers with the high quality prints they require, and they believe that they will be used more widely in the future.
Due to the optimization and improvement of the solubility of the raw materials used in the plate, it is also possible to shorten and save the processing time when the novel photopolymer plate is used. Practice has proved that compared with nyloflex FAH 114 media and its competitors, the ACE media has the shortest flush development time. In the laboratory, BASF's researchers used nyloflex FШ and nyloflex FIV rinsing devices and non-polluting environment-friendly solvents to extensively test the development speed of many different media. The test results showed that: The rinsing speed is twice that of the slowest plate, which means that the ACE plate can save 50% of the flushing time (the embossed height of the plate is 0.06~0.08 mm). Correspondingly, using ACE plates can also reduce the drying time by 65%. In BASF's laboratory, the researchers determined the drying time based on a comparison of various image elements and their drying performance. In general, when using an ACE plate with a thickness of 1.14 mm and 1.70 mm, the drying time is generally 45 minutes if the drying temperature is 65°C. The overall thickness error of the plate is reduced, and the installation speed on the machine is also increased, thus greatly reducing the commissioning time. Compared with ordinary flexo plates, nyloflex ACE plates can make the platemaking company's platemaking efficiency and production capacity by 50%. Of course, the increase in production capacity also depends on the type, structure and working conditions of the plate making equipment used. And other factors.
Main test data of ACE media
Recommended relief height 0.02"-0.044"
Back exposure time 25~90 seconds Main exposure time 7~20 minutes (depending on the specific conditions of the exposure device)
Washing speed 130~280mm/min Drying time 30~60min (Determined according to thickness of plate and structure of drying device)
Post-exposure time (UVA) 7~10 minutes Detach/after-treatment (UVC) 10~15 minutes (When post-processing and post-exposure are performed at the same time, it can be set to 15 minutes.)
Note: The exposure time depends on the type of device, the batch of media, the intensity of the lamp, and the level of detail in the image. The flushing time depends on the structure of the device, the type of brush, the pressure of the brush, the type of solvent, the concentration of the solvent, and the temperature of the solvent.
4, improve the ink transfer performance. As mentioned earlier, due to the optimization of the solubility of the raw materials used in the plates (optimization of the surface properties) and the great improvement of the production process and production methods, even during the printing process The lighter printing pressure applied also ensures that the photopolymer sheet achieves a uniform and smooth transfer of the ink layer. In addition, the weight of the ink layer carried by the nyloflex ACE plate and the ink release characteristics of the plate are also important factors affecting the color strength and ink layer thickness. In the actual production process, the thickness of the transferred wet ink film will vary from 1 to 15 micrometers due to the differences in the printing machine, the rubber roll, the anilox roll structure, the substrate material, and the experience of the printing operator. However, the results of testing nyloflex ACE plates under various printing conditions show that when printing with this plate, they can be satisfied with various substrate materials such as plastic films and paper. The thickness of the ink layer and the hiding power of the ink; this plate can also clearly print intaglio, fine lines of Yang and Yang and small dots; at the same time, the text surface of the nyloflex ACE plate does not accumulate dust during the entire printing process. It can always be kept clean and tidy, which of course reduces the number of times and the time it takes to stop printing, not only simplifies operations, but also helps to increase production efficiency.
5, halftone image printing better and higher quality. In order to determine the best combination of plate-tape (or plate-sleeve), BASF's researchers conducted a series of tests and studies. First, use a batch of test plates to make plates, then paste them with different tape materials, and then perform print tests on different printing machines (CI, stacked, and unit type), and change the setting parameters of the printing presses, inks System and substrate materials. The printed images on each test plate were the same, that is to say, the same file was used for plate making, and two kinds of screen lines were tested. They were 47 lines/cm and 60 lines/cm (120 Lpi and 150 lpi). Moreover, the platemaking parameters are also kept constant. When comparing various combinations of dot-divergent curves with ink transfer values, it was found that in order to control the dot gain rate at around 10% while achieving a higher ink transfer rate, it is obvious that rigid compressible tapes are used and Hard compressible sleeves are the most suitable. All scientific tests and observations have proven that nyloflex ACE photopolymer plates can obtain stable prints, even if the printing pressure is slightly changed during the printing process will not affect the consistency of the print, which is very suitable for long-lived Printing can also improve the printing accuracy of small jobs and reduce the wear of printing plates. Thanks to the high elasticity of the nyloflex ACE plate, it is possible to increase the efficiency of the plate, especially when installing plates on rollers with a smaller diameter. The test results also show that the nyloflex ACE media is very suitable for butt.
Second, digital plate making with nyloflex ACE D The digiflex ACE D plate was introduced and put into use in November 2000. The surface of this plate is coated with a photopolymer film (which can be used as a "mask"). During exposure imaging, the laser ablates the "mask" layer to form a certain dot shape, followed by the main exposure. . In the main exposure process, the UV light exposes the underlying photopolymer (without any scattering or diffuse reflection) through the ablated "mask" layer, just like the ACE D plate, after the exposure of the dots formed. The shoulders are steep, the edges are clear, and tightly integrated with the pre-cured layers. In general, the photoinitiator contains unsaturated double bonds in its molecular structure. During the process of UV exposure to form dots, the oxygen in the air can be combined with some unsaturated bonds, and the molecular structure of the photoinitiator gradually becomes Saturation slows the speed of photochemical reactions and ultimately affects the polymerization properties and polymerization of the plates. The presence of oxygen not only has a very important role in preventing the cross-linking reaction (induced by UV-A light), but it also has a certain influence on the quality of the resulting dots. The use of ACE D Plates results in extremely clear and well-trimmed outlets and reduces dot gains.
With digiflex ACE D plates combined with hard compressible tape or hard compressible sleeves, higher quality, better-quality halftone printed images can be obtained. Compared with ordinary digital flexo plates, digiflex ACE D digital flexo plate has a lower dot gain rate of only 10% to 15%.
Third, anti-ozone performance When the water-based ink on some film materials such as PE and PP film printing, because these films are non-polar materials, the surface energy is very low, very strong inertness, so printability is relatively poor, so Before printing, it is sometimes necessary to perform surface pretreatment of these thin film materials with an on-line corona treatment device to increase the surface energy of the thin film material and improve its printability. However, most corona treatment devices radiate ozone to varying degrees during the process, which may have a certain impact on the polymer plate material, causing cracks in the surface of the plate material. These small cracks are caused by the splitting of ozone molecules into reactive compounds and destroying the long molecular chains of the printing plate. However, the raw material used in the nyloflex ACE plate is a new type of compound that does not have this problem at all. Because the nyloflex ACE plate has higher ink transfer performance and excellent ozone resistance, this plate can exhibit excellent printability when printed using water-based inks with good transfer performance. , And the stability is also quite high.
IV. Summary In order to reduce production costs as much as possible, while at the same time being able to meet the needs of customers to the highest extent, to provide customers with quality products and services, at present, some printing industry leading companies and plate-making companies have begun to switch to nyloflex ACE version. Wood and digiflex ACE D digital plates, and more and more companies are also following suit. In the production process, if printing inks produced by BASF company are used with this ACE plate (in the whole experiment conducted by BASF, the researchers are basically printing tests with printing inks produced by BASF. ), we can provide customers with a set of scientific, complete flexo printing solutions, so that customers can obtain high-quality print.
In summary, the advantages of nyloflex ACE flexo plate and digiflex ACE D digital flexo plate can be summarized as follows: large exposure latitude, imaging accuracy, steep and straight shoulders, dimensional stability, high print rate, and good resistance to ozone Performance and so on. The new nyloflex ACE flexo plate and digiflex ACE D digital flexo plate produced by BASF Printing Systems can provide customers with the high quality prints they require, and they believe that they will be used more widely in the future.
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