The video tells you why the eight-sided seal needs two sets of printing cylinders? || The reasons why the eight-sided seal of plastic soft packaging should be separated into two sets are mainly as follows:
- Printing content and layout design: The eight-sided sealing bag has multiple sides that can be used for printing. Usually, the content of the front, back and bottom is relatively rich, which may contain the main information of the product, publicity patterns, etc., while the content of the two sides is relatively simple, which may be some auxiliary information or concise logos. The front, back and bottom are used as a set of plates, and the two sides are used as another set of plates, which is conducive to the arrangement of plate making and printing processes according to the printing needs of different surfaces, and to improve printing efficiency and quality.
- Production process: In the production process of eight-sided sealing bags, the front, back and bottom are the main material parts of a whole, and the two sides are added through a separate conveying system during the bag making process. Separate two sets of plates to facilitate the printing and processing of the main material and the side respectively during the production process, which makes the production process smoother and is also conducive to reducing problems such as registration errors in the printing process.
- Cost control: If all surfaces are made into a set of plates, the plate-making cost may be too high due to the size of the plate, the specifications of the printing machine and other restrictions, or the printing plate needs to be replaced frequently during the printing process, increasing the printing cost and time cost. It is divided into two sets of plates, and the appropriate plate-making method and printing process can be selected according to the number of colors on different surfaces, the complexity of the pattern and other factors, so as to reduce costs.
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