There are many problems on the flexible packaging printing quality details, eighty percent for plate-making process

【 What to watch for 】 As a very important part of the printing process, plate-making technology on detail determines the print quality and aesthetic. If your print looks strange, and have a lot of questions on the details, eighty percent is a problem on the plate making process. Obey the plate-making process requirement, can make your printing quality more perfect. In this paper, the plate making process requirement for your reference. 1, product category, product classification is clear, such as books, calendars, cigarette package, 3-side, seal in the bag, seal in the folding bag, fusing sealing bag and roll film, labels, cover film. 2, the font line text cannot be less than 1. 5毫米; Try to use text line such as body; Small text lines for multicolor hollow out or fold color overprint; When stamping line width & ge; 0. 15 mm, overprint when the line width & ge; 0. 3mm。 3 sizes marked size range reticle; Clear the cursor size and position. 4, the transition and shallow network transition color color minimum percentage not less than 10%, as far as possible the transition length of color uniform transition should be considered not visible grid phenomenon. 20% and shallow network under consideration by the color, so that when printing ink evenly, don't throw away. 5, with words on the base of color is the same color background and word color net into gap should be widened to more than 50% as far as possible, so that the words are easy to be a picture. 6, embossing, overprint, and other issues should be made clear. 1-7, full version of the base considering bleeding 2 mm its primary role is to protect the finished product when cutting, make the background fully cover the area where to express. 8, line edition deepens the line separating the carved carved or levels should be given. 9, the unit length and increasing requirement in the process of the printing plate cylinder diameter factors based on ink drying and overprint, substrates in tension being under the effect of drying temperature and tensile deformation, elongated under a certain tension of basement membrane, while removing tension after apparently retraction. It can process according to the material shrinkage and the factory and the customer characteristics of unit length adjustment. For example: PET 0. 1%,BOPP - 0. 3%、PA- 0. 6%, etc. But there are plenty of exceptions, such as extrusion composite membrane size get longer, the customer only allow negative deviation, etc. , need to be adjusted according to the concrete situation. Because of printing on substrates in the course of elongation in the longitudinal direction, so the plate cylinder diameter according to certain proportion by increment of color, to make up for the substrate length direction change, achieve the purpose of accurate overprint. Wood industry using the plate cylinder diameter increment value is 0. 3 mm, that is, the same set of the color of the plate cylinder diameter set point, increasing amount since 2 color by color.