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Imposition tray is in accordance with the principle of saving paper, and opened as far as possible under the premise of a plurality of golf most compact cassette, makes up the web printing machine for printing. However, there are many subsequent processes involved in the production of carton. Different imposition methods have different effects on the quality and efficiency of the subsequent process. Reasonable spelling can make the subsequent process be completed smoothly. If the imposition is not correct, it will be given to the subsequent process. Unpredictable troubles, unable to complete, or even have to rework. Therefore, the imposition personnel must be familiar with the post-press process, and it is best to have a quality control. 1. Influence on die cutting process
Die cutting is the previous process of the paste box process, and the quality of die cutting will have a direct impact on the quality of the paste box.
(1) Effect on die cutting pressure
After the die-cutting, the blanks are obtained one by one. In order to ensure that the creases and cuts of each blank are clear and smooth, and the molding requirements are met, the pressure adjustment during die-cutting is the most critical, which requires the distance of the carton imposition. The distance between the two nearest edges is not less than 3 mm, that is, the minimum pitch of the general carton is 3 mm. Otherwise, it will be very troublesome when making the die, and it will also affect the adjustment of the die-cutting pressure, which will affect the die-cut quality of the carton.
(2) Influence on the adjustment of die cutting rules
Under the premise of meeting the production requirements, the imposition staff will generally try to increase the number of layouts, which not only can reduce the production cost, but also improve the production efficiency of the equipment. But it also brings another inevitable problem, that is, the problem of the expansion of the paper during the printing process, especially the expansion of the vertical paper, which is more serious, and the corresponding die-cut size is This change does not occur. If the number of stitches is too large, it will cause a part of the blank pattern on the printed sheet to be misaligned, which makes it difficult for the operator to adjust the die-cutting rules.
2. Impact on the paste box process
If the automatic folder-gluer is used for carton processing, special care must be taken during the imposition to not blindly make the paste too small in order to save paper, or to make the mouth too large in order to increase the side pressure of the carton. Because the automatic folder-gluer has certain requirements on the size of the paper box, and the same equipment has different requirements on the size of the different box types, usually 30 to 80 mm.
The above content is selected from the 7th issue of “Printing Technology · Packaging and Decoration †of Keyin Media in 2013. For more journal content, please pay attention to the journal channel, and click on the latest journal content to enter the electronic journal channel of Keyin.com.
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