Problems with Plate and Platemaking

In the carton factory surveyed this time, the plates used for carton printing have both rubber and photosensitive resin plates, and the photosensitive resin plates occupy the majority of the plates used in each carton plant. In the photosensitive resin plate, DuPont plate is also favored. As Shi Zhongjie, manager of Shanghai Shengbai Packaging Co., Ltd. said, DuPont's photosensitive resin plates are more durable. Heze Victory Packing Co., Ltd. Wang Yamin, deputy general manager also believes DuPont quality is better.

However, the current plate material is also unsatisfactory. For example, Yu Jimin of Hangzhou Dingxin Paper Co., Ltd. put forward the following two hopes for the media: (1) It is hoped that the media will be more transparent so as to facilitate overprinting. (2) It is hoped that the tolerance of the plate will be greater. Wang Yamin's manager is too expensive for importing plates. He hopes that the price of imported plates can be reduced. On the other hand, he hopes that domestic plates will have a chance to succeed, and at a moderate price, meet the domestic carton on the premise of ensuring quality. Printing plant requirements.

So how should the carton factory choose the plate? Mr. Zhong Yunfang, Zhejiang Shangfeng Packaging Group Co., Ltd. put forward his own views. He believes that DuPont JDR has the best comprehensive quality, but producing small texts makes it harder to control the actual location and line version. Japan's KY edition makes it difficult to duplicate the outlets. The production of fine text and real-time line version is better. Therefore, it is recommended that in the choice of media, the cable version uses the DuPont JDR155 version, and the real-location line version uses the Japanese KY version.

As for the corrugated box printing plate making method, the respondents had their own plate making, but most of them were made by a professional plate making factory. It has already been common for large- and medium-sized cartons to be printed in the country. Here we mainly understand the view of the carton factory professional plate making factory.

In general, the quality of the carton printing plate is good enough. Many carton factories are also equipped with three-color and four-color printing machines with higher automation. However, many products are still unsatisfactory. The place. Why is this? According to some industry insiders, 70% to 80% of the success of flexo printing products depends on the quality of the plate, and now there are some problems in the carton version. Manager Shi mentioned: On the one hand, there is a lack of communication between the plate making factory and the carton factory. For example, for some chromatic printing plates, the plate-making manufacturers are not familiar with the plate-making process, and they proceed with the normal plate-making process, resulting in frequent occurrence of a bottoming phenomenon during printing. If communicated well, the printing factory will tell the plate-making factory to enlarge the color printing version. On the other hand, there are also some problems in the quality of platemaking. For example, when the dots are supposed to be roughly cylindrical, they actually have to be large and small, and some are too high. Severe dot distortion will occur.

There are also some unsolved problems in the self-publishing of carton factories, such as:
(1) Summer heat, bad air pumping.
(2) Small grids are easy to wash off and other plate making issues.
(3) What kind of bonding method is better between plate and plate base, which can be replaced, and it is not easy to separate?