Resin Edition How to Solve Printing Oil Problems

Many years ago, I received a batch of printing tasks for coated paper labels. This batch of adhesive labels is used for the packaging of electronic products, which is attached to the more prominent positions on the goods, and the quality requirements of the customers are more stringent. Therefore, we decided to arrange this product on the DT400 type four-automatic platform printer and use magnetic platen printing to ensure printing quality and ergonomics. Due to the fact that the layout of the product was a tiny version of the word in the field version, 4 small zinc plates were produced at the time, and the combined plates were printed in open format. For this product is a yellowish-gray gray printing draft, it uses bright white ink as the main color, slightly black ink and yellow ink mixed. Due to the cold and dry climate in India, the ink has a large consistency and lacks the fluidity needed for normal printing. This causes a certain degree of obstacles to printing. Therefore, an appropriate amount of ink is added to the ink to increase the fluidity of the ink. Reduce stickiness. When the proofs were printed, it was found that the on-site layout exhibited obvious “oil” marks and the printing process was disappointing. At one time, it was suspected that the “oil” of the ink layer was caused by the addition of oil varnish. When he was preparing to change ink, he found that there was something wrong with one version of the negative plate making process that did not meet the quality requirements. For this reason it was decided to remake a printing plate. In the event of a rush of time, solid plates were used to make up this plate. Afterwards, this piece of resin was printed together with the original three zinc plates. Unexpectedly, the proofs we made this time surprised us so much that under the same printing ink, the three inks printed on the zinc printing plate still remained the same, but the only one printed with the resin printing plate was. On the layout, there is no “fat” phenomenon, and its layout is full and even and the ink layer is bright and bright, and the process effect is very good. In this way, we decided to scrap the original three-piece zinc plate, and then three resin plate impositions to ensure the quality of the product. Through the comparison of the above process differences, we have inspiration. The original printing "oil flower" was caused by the zinc plate layout structure and the characteristics of the plate material, and it was the instant of separation of printing imprinting. The ink layer on the printing product and the ink layer on the printing plate phase. Both of the ink layers produced during the peeling were separated and broken. The density of such traces resembles that of the layout of the oil paint produced by improper ink transfer. The use of resin plate printing, because the plate material has a soft texture, good surface gloss, ink affinity is better than the zinc plate, and the pressure required for printing is much lighter than the zinc plate, so it is not easy to produce the ink when the imprint separation The layer has a trace of "spray" that is "broken."

Kang Qilai