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1, outlets: outlets constitute the smallest unit of printing patterns. Gravure Dots Due to different plate making methods, the dots reflected on the roller are also different: As the dot changes, the size and depth of the dots are also changed along with the change of the net engraving dots; , only changes in the size of the outlets; changes in the laser network outlets are generally reflected in the depth of the outlets.
2. Color: The color of the object comes from light. Most of the objects in nature are not luminous, such as prints, flowers and trees. Their color is derived from the reflection or transmission of the color light of the solar spectrum. The three primary colors of light in nature are red, green and blue. These three different shades of light can be combined to form numerous shades of light; the three primary colors of pigments are cyan, magenta and yellow. Theoretically, the three-color pigments can be mixed in different proportions. Get all the colors in nature.
3, hard scraping and soft scraping: different installation methods of scraper in gravure printing produce different effects in printing. Hard scraping refers to the fact that the scraper blade is short from the support blade, and the effect is large. The easy-to-wear version of the roller will play a role in solving the problem that the layout is not clean. Soft scratching refers to the longer distance from the blade to the support blade. The effect is that the color tone is gentle and the fog is easy to occur. For the transfer of the shallow part of the version will be a certain help.
Roller transport and storage:
Protective measures should be taken in the transportation of the printing roller, such as coating a thick layer of corrugated paper on the surface of the roller, and avoid collisions and bumps during transportation.
The printing roller must be cleaned first after printing. The residual ink in the printing roller will cause chrome and jamming. Then apply a layer of anti-rust oil evenly on the roller, and wrap it in a soft and dry paper (it can also be used as a waste sample after printing) in a cool, dry place.
Particular attention should be paid to keeping the place away from acidic substances.
** Gravure Plate Roller Care Guide**
The chromium layer on the surface of the gravure roll is quickly corroded when it encounters corrosive liquids, gases, or unqualified solvents such as acids, alkalis, and the like. Small dots are formed on the plate surface and are transferred on the printing film. . This phenomenon is more likely to occur in a humid environment because the moisture in the air can easily absorb acidic or alkaline gases, and the air is in contact with the surface of the printing roller at all times. When the chromium layer has just been eroded, if the chromium replating is not removed as soon as possible, it is likely that the copper layer will not be etched for a long time, so that the plate roller will be scrapped and cause unnecessary losses.
In order to effectively avoid the above phenomenon, our company through a variety of research, is now providing a method to save the version of the roller, for reference in use:
1. After a print is completed, the roller is cleaned with a solvent;
2. Wipe the plate with a clean, soft cloth, leaving no fingerprints (because sweat contains corrosive components);
3. Use a soft cloth to pump clean, low-volatile light oil. Apply a uniform layer to the surface of the platen roller. Be careful not to use waste machine oil.
4. Use a thin film (or waste printing film) to wrap the oiled version of the roller (with the ink facing outwards), store it vertically or with a rack and store it in a ventilated, dry room.
The above method has been verified to provide a certain degree of protection for the roller.
Problems in Printing of Printing Rolls and Handling Methods:
First, drawing line: In the printing process sometimes appear on the printed samples of non-pattern lines, lines intermittent.
Cause: Mainly due to ink contamination and coarse ink particles.
Solution:
1, the printing plate roll with 1000 # sandpaper will play at the drawing area.
2. Replace the scraper or grind the scraper to adjust the pressure and angle of the scraper.
3, the impurities in the ink will lead to wire drawing phenomenon, filter the ink or replace the ink.
4. Printing companies that often exhibit wire-drawing phenomenon should pay more attention to the environment of the printing shop.
Second, bite the color: The printing process will appear after the color ink to bring down the former color ink phenomenon.
Cause: This is often due to the fact that the previous color ink has not yet dried and the second color ink has started to transfer.
Solution:
1, reduce the printing speed.
2. Use a quick-drying solvent.
3, adjust the drying system temperature and wind speed.
4, reduce the pressure of the impression cylinder.
Third, dirty version: high-speed gravure will appear dirty version of the problem, the performance of the roller's non-printing surface will also be stained with a layer of ink, so that the printed product is a piece of dirt.
Causes: Mainly due to the precipitation and coalescence of a large number of resins, and the affinity of the resin for the rollers. Under the pressure of the squeegee, the resin will stick tightly to the rollers, resulting in a dirty plate.
Solution:
1, the use of strong solvent, volatile solvents. (Refer to the attached list of solvent parameters we provide).
2, reduce the viscosity of the ink, so that the resin is fully dissolved.
3, the scraper in the printing adopts hard scraping method.
4, the blade angle is about 60 degrees.
5, the above methods can not be solved, try to use 1000 # sandpaper polished version of the roller.
Fourth, the phenomenon of moire or tortoise plagued you?
If we look closely at the printed products, especially in the brown hue, or when the black version is heavy, we will find that there are many non-smooth but regular interference patterns on the printed samples, which affects the appearance and texture of the product. This is a topic for plate-making companies. After practice and research, we have developed a set of solutions to solve this problem. If your company has encountered such a problem, we are willing to relieve you of the trouble.
V. Annoying white dots (fish scales) on the transitional website?
The transitional network must be smooth, delicate, and natural in printing, but often there is an annoying phenomenon at 80% of the outlets. There is a pile of fish scales. If you want to make a breakthrough in your product, please contact us.
How to print the best prints?
Seven-point plate making, three printing. One of the big reasons for the quality of your product is that the platemaking company does not have a dedicated process for you.
There are many factors that can make your press make a good product. The printers, inks, substrates, printing plates, and the printing staff that the technology comes from will all play an important role. We know that the effect of different printing presses on the same printing roller is very different. It may be that the effect of light netting on the prints is not the same, the saturation of hue is not the same, and the level of intermediate tone is different. .
Different inks can make a big difference in the printing effect, which is very much related to the ink's own characteristics.
Different manufacturers of ink with ash, color shift and color efficiency is not the same. The final manifestation may be gray balance on the printed products, color deviation, a certain color appears shallow and so on. Different substrates will have a greater impact on printed products. The effects of BOPP, PE, PVC, PET paper, and nylon on printing are quite different.
The negative effects caused by these reasons can be effective if they are taken into consideration when making the roller.
Platemaking companies tend to use the same platemaking process to make all customer rolls. This type of roll is popular and it does not take into account the printing conditions of a customer. Such a roll may not be suitable for your equipment and process. The best performance of the printing plant equipment and processes cannot be achieved. Therefore, for your products to be more outstanding, it is necessary for the plate-making company to understand your printing conditions so that they can create a special meal suitable for your appetite.
Through research and development, we have mastered how to create a method and process that is suitable for customers' special printing processes according to the customer's printing conditions, and produced a special plate making process suitable for the printing process for some printing companies.
If you want to make your print more outstanding, please go to Dongyun II company to tailor the platemaking process that suits your company's printing conditions.
2. Color: The color of the object comes from light. Most of the objects in nature are not luminous, such as prints, flowers and trees. Their color is derived from the reflection or transmission of the color light of the solar spectrum. The three primary colors of light in nature are red, green and blue. These three different shades of light can be combined to form numerous shades of light; the three primary colors of pigments are cyan, magenta and yellow. Theoretically, the three-color pigments can be mixed in different proportions. Get all the colors in nature.
3, hard scraping and soft scraping: different installation methods of scraper in gravure printing produce different effects in printing. Hard scraping refers to the fact that the scraper blade is short from the support blade, and the effect is large. The easy-to-wear version of the roller will play a role in solving the problem that the layout is not clean. Soft scratching refers to the longer distance from the blade to the support blade. The effect is that the color tone is gentle and the fog is easy to occur. For the transfer of the shallow part of the version will be a certain help.
Roller transport and storage:
Protective measures should be taken in the transportation of the printing roller, such as coating a thick layer of corrugated paper on the surface of the roller, and avoid collisions and bumps during transportation.
The printing roller must be cleaned first after printing. The residual ink in the printing roller will cause chrome and jamming. Then apply a layer of anti-rust oil evenly on the roller, and wrap it in a soft and dry paper (it can also be used as a waste sample after printing) in a cool, dry place.
Particular attention should be paid to keeping the place away from acidic substances.
** Gravure Plate Roller Care Guide**
The chromium layer on the surface of the gravure roll is quickly corroded when it encounters corrosive liquids, gases, or unqualified solvents such as acids, alkalis, and the like. Small dots are formed on the plate surface and are transferred on the printing film. . This phenomenon is more likely to occur in a humid environment because the moisture in the air can easily absorb acidic or alkaline gases, and the air is in contact with the surface of the printing roller at all times. When the chromium layer has just been eroded, if the chromium replating is not removed as soon as possible, it is likely that the copper layer will not be etched for a long time, so that the plate roller will be scrapped and cause unnecessary losses.
In order to effectively avoid the above phenomenon, our company through a variety of research, is now providing a method to save the version of the roller, for reference in use:
1. After a print is completed, the roller is cleaned with a solvent;
2. Wipe the plate with a clean, soft cloth, leaving no fingerprints (because sweat contains corrosive components);
3. Use a soft cloth to pump clean, low-volatile light oil. Apply a uniform layer to the surface of the platen roller. Be careful not to use waste machine oil.
4. Use a thin film (or waste printing film) to wrap the oiled version of the roller (with the ink facing outwards), store it vertically or with a rack and store it in a ventilated, dry room.
The above method has been verified to provide a certain degree of protection for the roller.
Problems in Printing of Printing Rolls and Handling Methods:
First, drawing line: In the printing process sometimes appear on the printed samples of non-pattern lines, lines intermittent.
Cause: Mainly due to ink contamination and coarse ink particles.
Solution:
1, the printing plate roll with 1000 # sandpaper will play at the drawing area.
2. Replace the scraper or grind the scraper to adjust the pressure and angle of the scraper.
3, the impurities in the ink will lead to wire drawing phenomenon, filter the ink or replace the ink.
4. Printing companies that often exhibit wire-drawing phenomenon should pay more attention to the environment of the printing shop.
Second, bite the color: The printing process will appear after the color ink to bring down the former color ink phenomenon.
Cause: This is often due to the fact that the previous color ink has not yet dried and the second color ink has started to transfer.
Solution:
1, reduce the printing speed.
2. Use a quick-drying solvent.
3, adjust the drying system temperature and wind speed.
4, reduce the pressure of the impression cylinder.
Third, dirty version: high-speed gravure will appear dirty version of the problem, the performance of the roller's non-printing surface will also be stained with a layer of ink, so that the printed product is a piece of dirt.
Causes: Mainly due to the precipitation and coalescence of a large number of resins, and the affinity of the resin for the rollers. Under the pressure of the squeegee, the resin will stick tightly to the rollers, resulting in a dirty plate.
Solution:
1, the use of strong solvent, volatile solvents. (Refer to the attached list of solvent parameters we provide).
2, reduce the viscosity of the ink, so that the resin is fully dissolved.
3, the scraper in the printing adopts hard scraping method.
4, the blade angle is about 60 degrees.
5, the above methods can not be solved, try to use 1000 # sandpaper polished version of the roller.
Fourth, the phenomenon of moire or tortoise plagued you?
If we look closely at the printed products, especially in the brown hue, or when the black version is heavy, we will find that there are many non-smooth but regular interference patterns on the printed samples, which affects the appearance and texture of the product. This is a topic for plate-making companies. After practice and research, we have developed a set of solutions to solve this problem. If your company has encountered such a problem, we are willing to relieve you of the trouble.
V. Annoying white dots (fish scales) on the transitional website?
The transitional network must be smooth, delicate, and natural in printing, but often there is an annoying phenomenon at 80% of the outlets. There is a pile of fish scales. If you want to make a breakthrough in your product, please contact us.
How to print the best prints?
Seven-point plate making, three printing. One of the big reasons for the quality of your product is that the platemaking company does not have a dedicated process for you.
There are many factors that can make your press make a good product. The printers, inks, substrates, printing plates, and the printing staff that the technology comes from will all play an important role. We know that the effect of different printing presses on the same printing roller is very different. It may be that the effect of light netting on the prints is not the same, the saturation of hue is not the same, and the level of intermediate tone is different. .
Different inks can make a big difference in the printing effect, which is very much related to the ink's own characteristics.
Different manufacturers of ink with ash, color shift and color efficiency is not the same. The final manifestation may be gray balance on the printed products, color deviation, a certain color appears shallow and so on. Different substrates will have a greater impact on printed products. The effects of BOPP, PE, PVC, PET paper, and nylon on printing are quite different.
The negative effects caused by these reasons can be effective if they are taken into consideration when making the roller.
Platemaking companies tend to use the same platemaking process to make all customer rolls. This type of roll is popular and it does not take into account the printing conditions of a customer. Such a roll may not be suitable for your equipment and process. The best performance of the printing plant equipment and processes cannot be achieved. Therefore, for your products to be more outstanding, it is necessary for the plate-making company to understand your printing conditions so that they can create a special meal suitable for your appetite.
Through research and development, we have mastered how to create a method and process that is suitable for customers' special printing processes according to the customer's printing conditions, and produced a special plate making process suitable for the printing process for some printing companies.
If you want to make your print more outstanding, please go to Dongyun II company to tailor the platemaking process that suits your company's printing conditions.
Bidragon Machinery Co., Ltd. , http://www.hncuttingmachine.com