Imposition carton printing process is an extremely important process design content related to the product can be smoothly carried out in each step of production, whether to facilitate the quality control of the production process, whether the paper can get a reasonable, fully utilized, while also affect the final carton forming effect. We often see, after forming a carton, open at both ends or flap obvious bulge phenomenon, which is not correct tray Quartet, very beautiful, this is what we often say "bread box."
Mainly because of the arrangement of the paper fiber direction indentation line is not suitable due. If the tray opening parallel to the direction of travel of the fiber, it will muster the opening is very obvious. This is because the paper absorbs moisture in the printing process, after polishing, polishing, coating and other surface treatment process, more or less deformed in the production process, the paper deformation occurs at the bottom of the tension of the specific surface tension and the sides of the cassette has been fixed in cement after forming, only open outward, causing the rear tray molding opening muster excessive phenomenon. This is the case even if the paper is not deformed in the printing, surface treatment process, the carton packaging during use due to changes in temperature and humidity, water will expand as long as the paper, the paper surface occurs after treatment, the surface expansion coefficient smaller than the bottom of the drum will be out, so when opening cartons just forming is often flat, but if let go after a period of time, will begin to muster, with longer storage time, to muster more and more obvious, and the larger carton size, bulging more obvious.
If you let the indentation line perpendicular to the fibers in the paper, press out fold lines is not only easy, but folded after pressure line straight, neat, good carton strength, easily deformed, good for carton forming effect, which will help the automatic packaging of products machine. Therefore, in make-up, without affecting the production process control and does not cause the fibers perpendicular to the paper waste under the premise of the tray should be the main pressure line is set with the paper.
Currently, the paper on the market mostly ruled paper, which brings to the imposition limitations must be taken into account various factors when nesting. The blind pursuit of the tray molding ignoring product quality control and imposition quantity is not correct, but the blind pursuit of quantity while ignoring imposition carton forming effect and product quality control is unreasonable. Therefore, when the make-up, it is necessary to consider whether the fight EDITION easy to control product quality, while also considering whether to create the effect of waste paper and carton after forming. Normal circumstances, without prejudice to the premise of each step in the production process of product quality control, the opening width of 50mm below the tray or carton customer does not have special requirements, may not consider the issue of paper fiber direction should be to avoid paper waste and facilitate quality control be considered as a major factor. But in the face of the opening width of 50mm above the tray or the customer has special requirements, it is necessary to consider the issue of paper fiber direction.