Interpretation Of The Printing Ink Corrugated Faq (2)
4. Multi-color printing not allowed to overprint
Analysis: overprint printing industry is not allowed to issue common, as are many factors that it constitutes, nor is it very easy to solve things. First Multi-Color Printing Slot Machine Roll their own version of the location of the accuracy and precision is a direct factor. Followed by the feed roll, roll adjustment, traction with the use of plates arranged in the accuracy and Cardboard Cause warping problems are not allowed to issue overlay.
Solution: As the overlay is composed of multi-color printing, inevitably colored version of the printing roller slot machine on the relative position is not accurate, which requires equipment sector to adjust the printing position to ensure that the error in the minimum limit. First, as we begin to affect the thickness of the printing on the cardboard, so each color should Roller Department before a pressure larger than the number, in order to make the pressure on all colors are equal. Second, each printed both front and rear paper feed rollers and the traction roller, two roll adjustment is very important, especially in the narrow width of the board should pay attention to adjust the gap time and location. In case of partial trapping should increase in the edge of each plate with two traction to ensure a smooth cardboard over the printing process. Again, because Corrugated paper Warping board the different levels of impact on the overlay has absolutely necessary to replace the board should, but must ensure that flat.
5. Print color inconsistencies Cause analysis: consistent color printing is the printing machine after the cardboard along the whole vertical or horizontal blotting uneven, resulting in the issue mainly due to the lateral ends of the color printing different side of shallow, deep side. There is the ink system Cycle Unfavorable Ink Inadequate flow, mass transfer roller uneven.
Solution: horizontal color is uneven due to rubber roller and roller, roller and plate roller produce different ends of the gap, so the three rollers to adjust the space between the ends of the need to maintain parallel . As the printing slotting machine is a central location, as usual on the production of narrow cardboard, plastic rollers and roller will wear out sooner, but both ends of the wear less, printing the result is not the same, if both ends of the color apparent inconsistency, we need to repair or replace a drum. Vertical color is uneven due to ink flow is too small, for lack of cause ink. Therefore, a little ink to the machine running idle, so that ink after the full cycle of production, can reduce this problem from occurring.
6. Into the corrugated paper or printing will crush
Analysis: This is caused by the two aspects, one feed roller (refer to printing slotting machine) space is too small, less than the thickness of the original board, pre-press will be corrugated without crushing; Second, in the printing process the printing roller pressure is too large, causing significant crush corrugated printing site.
Solution: the gap into the paper roll according to the thickness of corrugated board to determine the basic lower than the original thickness of 0.5mm can be cardboard. If the gap is too small, corrugated destroyed, corrugated Carton After forming the physical strength will be affected; gap is too large, cardboard can not be uniform road, causing the printing location are not allowed. Printing should adjust the printing roller and impression roller gap. Currently corrugated Carton Printing Most use the flexible version, the printing method using light pressure, both kiss-type printing, pressure must not be too large. If the pressure is too large, part of the corrugated printing will be crushing, the performance of the cartons will be affected. Therefore, impression cylinder and roll gap adjustment is very important to handle the printing position can be no significant depression.
Corrugated corrugated manufacturing process will avoid damage to it and the general Box Of Sell Packaging is different, because the force formed corrugated are many, once shocked UV damage type, such corrugated is meaningless.
In summary, these problems are only the most common printing problems. Others, such as printing illegible, distorted, Postpress Appears unnecessary printing marks (commonly known as print hanging dirty), imprinting appears striate, ink colors, etc. not reach the desired results, many of them. But in addition to the objective factors, such as plate material, version liner, ink, and even the quality of corrugated board level, have a direct impact effect of corrugated printing. So to use high quality raw materials to ensure high quality printing. To solve printing problems arising in the course, but also on practical experience with the operation of the workers, first of all they need to have a certain level of theoretical knowledge, such as the need to understand the printing equipment and manufacturing process of the principle and process of order, take full advantage of the printing system the rubber roller, transfer roller (roller), four-cylinder and the impression roll most of the relationship, when there is a problem how to skillfully and accurately adjust the position accordingly, can be resolved quickly. Second, even in practice good at summing up, the circumstances under which a few parts to adjust, and require accurate, which is the normal operator is not easy to do. Tenders as a good, be good at finding problems and can solve the problem, it can increase production efficiency.
In short, there printing issues mentioned above conditions can not be separated, as long as the principle of full understanding of printing, printing problems will go away.
[Keywords]: Corrugated Carton Ink Comment Large In Small
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