Due to the fact that flexographic printing belongs to water ink printing, it is easy to cause swelling of the paper when encountering water or large ink. Local unevenness after printing also affects the next printing process, which can easily cause wrinkles. At the same time, the swelling of the printing material intensifies the fluctuation of tension, making it difficult to produce good products due to large fluctuations in printing accuracy. Secondly, due to the poor moisture resistance of toilet paper, when it comes into contact with the printing plate, it is easy to bring loose fibers from the paper onto the plate, resulting in a sticky plate and making printing unable to proceed continuously, which seriously affects printing quality and yield. Ordinary tissue paper is made by using two or three layers of wrinkle free toilet paper, which are folded together, then printed on a flexographic plate, and then combined with a toothed roller
The simple combination formed by the embossing of paper foil rolls is mostly found in Chinese napkins. Most napkins used on dining tables in Europe and America today have undergone micro gluing and lamination of materials before printing. This type of napkin is flat, wrinkle free, has a texture and thickness, and there is a special product called micro gluing composite product. Its printing layer is in the middle of the three-layer structure, so it has good texture and flexibility, and the surface of the product is more beautiful.
The napkins produced by domestic printers should strive to change the embossing and lamination method to micro glue composite before printing, so as to make a qualitative leap in the quality of napkins. In addition, domestic napkins should also be further improved in terms of materials to narrow the gap with foreign products. If possible, use high-purity wood pulp to produce base paper, add sufficient moisture resistance agents, and strive to meet printing requirements in terms of surface smoothness and moisture resistance strength.
