The problem of printing ink in Hydrophilic Nonwoven Fabric
Hydrophilic Nonwoven Fabric factory in the printing Hydrophilic Nonwoven Fabric, if the problem occurs, is distressing. The cause of the problem there are many, often not a single factor, paper ﹑ ink ﹑ printing plate ﹑ printing presses and other printing conditions, may be the culprit;
Ink problems are also divided into many kinds, in the lithographic printing is often "dirty" problem, and from which can be divided into "dirty" and "paste version" two kinds. "Dirty" refers to the ink attached to the printing plate blank location difficult to clean, and "paste version" refers to a faint color, Hydrophilic Nonwoven Fabric presented in a large area of space. The former is generally related to the printing plate. Therefore, when "dirty" occurs, it should first check the printing plate; the latter is mostly due to excessive emulsification of the ink. Both of these problems can be temporarily wiped with a clean version of the solution. In addition, in the ink, should also minimize the use of desiccant and desizing additives, such as auxiliaries, and in the use of auxiliaries, should also be extra careful.
Another common ink problem, is "heap ink", that is, the ink ﹑ paper powder, such as accumulated in the drum ﹑ printing plate and rubber blanket surface. The cause is the transfer of ink poor, therefore, Hydrophilic Nonwoven Fabric can be modified by adding inking oil, improve the transfer, it can be resolved.
The remaining ink problems, including "dry" and "dot increase". As the name suggests, the former is printed after a long time, the ink is still not completely dry, the solution is very simple, that is, Hydrophilic Nonwoven Fabric according to the situation to add the appropriate amount of desiccant, and in the printing and after the printing to maintain a good ventilation environment.
"Dot increase" refers to the dot can not be completely reproduced, resulting in color contrast is not enough ﹑ dot connected and so on. In response to this phenomenon, Hydrophilic Nonwoven Fabric the use of high color concentration of ﹑, the appropriate ink, reduce using ﹑ inking oil and so on, so that inking not too much, dot-enlargement phenomenon can be eliminated.
Summing up the above four main points, we can see that the use of ink additives can not completely improve the quality of printed matter, and conversely more likely to bring different degrees of side effects. Hydrophilic Nonwoven Fabric Therefore, we have to proceed from the fundamental point of use of the appropriate high-quality ink is the best policy.
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