What is the difference between the printing of PP woven bags and the printing on paper? The specific differences are as follows:
1.The printed ink is different. PP woven bag printing uses special plastic ink, which has strong adhesion on PP woven bag and is not easy to fall off. The printing ink of plain paper is printed on PP woven bag and all fall off. The printing ink on the paper is eaten into the paper, which is not easy to fall off and dry quickly.
2.The printing method is different. Woven bag printing, if the number is small, is generally printed on a flat screen. The plate making is convenient and flexible, and can be printed on the machine or printed by hand. The silk screen version has a short service life. Generally, the stencil is missing from 1 to 20,000 times and needs to be repaired. The maximum limit may not exceed 30,000 times. If the quantity is large, it can be printed by roller metal mesh or offset printing. This is a large machine. The printing speed is fast and the plate has a long service life, but the printing process is relatively complicated. About one version can be printed more than 100,000 times. Flat screen and metal screen printing are not suitable for color printing, and generally only for monochrome or two-color printing, otherwise the patterning process is complicated and the efficiency is low. Offset printing can be done in color.
3.PP woven bag printing Because of the relationship between the ink, the finished product needs to be dried or dried after printing, otherwise the printed product is easy to stick. The paper printing process has developed very fast, and high-speed printing and color printing have reached an extremely high level.