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Nowadays Labels are not only beautiful pictures, but also need to increase the added value of labels, bringing new profit growth points to label companies. The existence and development of post-printing processing not only meets the basic needs of label production, but also is an important part of achieving label value-added services and attracting the terminal market. The production of digital label products requires a complete solution, including Printing machines, toner / ink, a varnish, a suitable substrate, optimization software solutions and the best finishing equipment. Self-adhesive or pressure-sensitive labels are only finished after the finishing of the post-press processing. Table 1 shows the application of the label in different fields and the necessary post-press processing, although it is based on tradition. The results of the survey of printing technology , but the same applies to Digital printing (except a few).
Laminating
If the label needs to be used in harsh environments, the film is the first choice for finishing. The film provides sufficient protection for the label from mechanical wear and chemical solvent/grease corrosion, as well as improved lightfastness. In these cases, the self-adhesive film is more resistant to metal foil technology pretreated with UV glue. The film allows the label to have a longer life.
stamping
Rotating stamping dies are very common, while flat stamping equipment is relatively rare. In contrast, most of the stamping techniques (such as collapsible boxes, in-mold labeling, etc.) use materials that are not completely cut, only the top layer needs to be folded or cut. With Stamping technology has been radically changed with the advent of digital printing, known for on-demand printing and rapid production cycles.
The production of a fully rotating stamping die takes a certain amount of time (unless it can be purchased directly), which is why the semi-rotating stamping die exists. Although semi-rotating stamping dies are not as fast as fully rotating stamping dies, they can win the favor of label printers in shorter lead times and at lower cost. Since it is not necessary to replace the magnetic plate cylinder, the operation is also more convenient, so it is possible for the service provider to complete the delivery within 24 hours.
This model is suitable for business models of digital printing. Because of the specific applications of past flatbed stamping equipment, for example, they are often used in conjunction with metal foil systems to produce alcohol labels. The preparation time and cost of platform stamping equipment solutions are currently within reasonable limits.
Laser drilling
The biggest advantage of using digital laser stamping or laser die-cutting systems is that digital printing and secondary processing can be fully integrated into existing workflows, allowing label printers to work from both printing and secondary processing. Get the most out of your changing themes and formats. The disadvantage is that metal materials, polyethylene, and ethylene do not achieve optimal die cutting because laser die cutting tends to burn them. However, its advantages still make these shortcomings insignificant, especially in standardized production processes that require fast response times and a large number of variable die-cut profiles.
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