Off-line glazing, namely printing and glazing, are carried out on special machines, and special glazing machines or calenders are required for glazing. For some folding carton manufacturers, off-line glazing is a very good process not only because of its good gloss, but also because of its high flexibility and low equipment investment. However, off-line glazing systems have increased transport efficiency between printing and glazing processes, so most off-line glazing has lower production efficiency than on-line glazing.
After the glazing unit is connected to the printing unit, the printing and coating are completed once. Today's offset presses, gravure presses, and some screen printers can accomplish this process. No additional special glazing equipment is required, which not only improves work efficiency, but also overcomes various types of quality failures caused by offset printing and dusting. Therefore, on-line coating becomes an attractive coating solution. However, on-line coating has high requirements for coating technology, coating oil, drying equipment and coating equipment.
The Development of Paper Surface Technology in China
China's paper surface light technology has come a long and difficult road. The upgrading of coating equipment and technological innovation are not as fast as prepress and printing equipment. In terms of off-line glazing, from the mid-1980s to the end of the 1990s, almost all manual equipment was used. From paper feeding to paper-receiving, all were performed manually, which was not only inefficient but sometimes insecure. In those days, people did not have high requirements for paper finishing. People did not fully recognize the true value of paper finishing. With the improvement of people’s living standards and the rapid development of the domestic economy, especially the rapid development of prepress and printing technologies, printing has become more and more sophisticated and beautiful, and the efficiency has also become higher and higher. This has driven the post-press printing invisible. Paper finishing equipment is moving forward.
At the beginning of the new millennium, due to the introduction of some advanced paper finishing equipment and paper finishing technology abroad, some post-press equipment manufacturers in Taiwan have entered the mainland, bringing vitality to the field of post-press processing and paper surface light. , so that it has been greatly improved.
At present, the actual application of polishing technology prints are: gold and silver cardboard, packaging boxes, stickers, gift surface printing cover, outdoor billboards, circuit boards, color newspapers, etc., in particular, various external packaging boxes such as food , medicine, hardware, cigarettes, cosmetics, etc. In addition, the glazing technology is used more often in the covers of books and magazines, and in corporate promotional samples. Not only the overall glazing of printed materials but also the partial glazing of printed materials.
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