Self adhesive label printing belongs to special printing. Generally, its printing and post press processing are completed at one time on the label machine, that is, multiple processing processes are completed on several stations of one machine. Because it is online processing, the control of self-adhesive label printing quality is a general printing and processing problem. It should be generally considered and implemented from the aspects of material selection, equipment and regulation, as well as the formulation of process route, and watch the operation of label products at customers, so as to further improve the quality of label products.
When selecting raw materials, self-adhesive materials with high quality and qualified physical and chemical objectives must be selected, rather than products with expired or unstable physical and chemical objectives. Although the price of the latter is low, due to the unstable quality of such materials, it consumes a lot in various processes, and even leads to the failure of normal processing of the equipment. It not only wastes raw materials, but also wastes a lot of human and material resources. The processing cost of product labels is not necessarily low. What is more serious is that they may be returned by customers or even lose customers. First of all, in terms of prepress processing, many orders planned by customers are mainly offset or gravure printing. If this original is printed by flexographic printing, many quality problems will appear in the sample, such as inadequate color, unclear level, hard edge, etc. Therefore, to deal with such problems, it is very necessary to communicate with customers in time.
Plate selection, flexible plate selection is also very skilled. The professional plate making personnel of printing enterprises have a full understanding of the application of plate materials, the manufacturing of screen plate, the transition of layers, the increase compensation of network points, the elasticity of printing plate and so on. This is not only conducive to production, but also can control the quality parameters, avoid artificial disturbance and reduce the occurrence of faults.
Equipment selection: due to the particularity of label printing, narrow flexographic printing equipment has excellent characteristics compared with embossing and other types of flexographic printing equipment. Narrow flexographic printing equipment not only has simple operation, high printing quality and operation efficiency, strong combination, can make more kinds of products and have more competitive strength.
