1. Water roll velvet anti-sleeve effect is good. Recently, the J2203 two-color machine of a certain factory found that the water roller fleece depilated and stuck to the printing plate when printing a large-area field plate at one time, which seriously affected the product quality. Through analysis, we believe that if the water roller velvet is turned over and the fluffy side is wrapped inside, the disadvantage of hair removal can be avoided. So the water roller velvet was reversed, and the printing practice proved that the effect was very good. Not only did the printing plate stick to the roller fluff, but also the water delivery function was good, and the printing plate was evenly wetted. Since the water roll velvet reverse sleeve is better than the positive sleeve, all products printed now are changed to all reverse sleeves.
2. Dry wipe application. When the offset press has a long downtime, the moisture on the printing plate is easy to evaporate and damage the printing plate. Therefore, it is necessary to apply glue to protect the printing plate. However, due to manual application of water wipe cloth dipped in glue solution, the thickness is often uneven, especially the thick part of the printing plate, which is not easy to wash off after drying, and it will "bite" the printing plate in severe cases. Therefore, we changed to that after applying glue, we must use a dry cloth to gently chase on the printing plate, so that the glue layer on the printing plate is uniform and easy to wash, and the printing plate is properly protected. Print durability has also improved. In addition, when the new PS version is printed on the machine, after scrubbing with a water treatment cloth, the water is soaked on the basis of the picture and text, and it is often not inked. At this time, as long as it is wiped on the basis of the picture and text with a dry wipe, after wiping off the water soaked, it is easy to apply ink.
3. Print graphics that are wider than the circumference of the cylinder. Recently, a factory printed a product with a graphic width of 670mm, which was arranged to print on the 01 slow speed machine. However, the circumference of the drum of this machine is only 620mm, and it is incredible to print pictures that are 50mm wider than the circumference of the drum. Because this product only prints one color, its graphics and text are thick, and the interval is also large, we think we can use this favorable factor to print twice. All the parts that can be printed on the cylinder are printed first, and the parts that can not be printed are made another version, the graphics are printed on the mouth, and the semi-finished paper printed once is turned around, which means that the graphics will not be printed. Transfer the blank area to the mouth and print it again, so that the pictures wider than the circumference of the drum are printed, the quality is guaranteed, and the customer is very satisfied.
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Anhui Jianfeng Environmental Protection Technology Co., Ltd , https://www.jfplacutlery.com