Ink technology in transparent folding plastic box printing

The world of packaging and printing products is dazzling, and the application of new materials, new technologies, and new technologies is changing with each passing day. How to keep up with the pace of development of the era, how to keep improving in the existing printing process, this is a practical problem placed in front of every printing practitioner. As a kind of transparent plastic box packaging which has been greatly appreciated by consumers and consumers in the packaging process, its transparent, beautiful, and intuitive functions have been rapidly developed in recent years. I have been dealing with ink for many years, from the perspective of the application of ink in transparent folding plastic box printing and processing, analyzing the various problems and solutions in the printing process, and making an exchange with readers.

First, transparent plastic box printing technology and ink

At present, the technology for printing transparent plastic boxes presents a situation in which offset printing, screen printing, flexo printing, and gravure printing coexist. The ink used is mainly solvent ink and UV ink. As we all know, with the implementation of the EU ROHS decree, human beings pay more and more attention to the environmental protection of the environment, together with the inherent environmental protection, high efficiency, and energy-saving features of UV inks, which have led to the widespread use of UV inks in transparent folding plastic box printing.

From the point of view of offset printing, silk screen printing, flexo printing, and gravure printing, offset printing is used to exquisitely print the dots and is favored by many users. However, the disadvantage is that secondary processing is required after printing, which takes time and labor, and investment in the site and equipment is large. Silk screen is strong in its three-dimensional sense, flexible in small batches and welcomed by a large number of users. The disadvantage is its low efficiency and its inability to achieve mass production. Flexo will lead the trend in the future transparent folding plastic box printing processing with its powerful on-line processing capability and flexible module combination (offset printing, flexo printing, gravure printing, and silk screen integration).

Second, UV ink in the transparent plastic box printing common problems and solutions

Transparent plastic box printing materials for a variety of plastic sheet (such as PVC, PET, PP, etc.). For the printing of such low surface energy plastic film materials, an analysis is made of the common problems common to UV ink printing in various printing methods (see Table 1).