company news about Printing ink

   
   For products such as napkins, which come into direct contact with the human body, such as the mouth, hands or eyes, and food, hygiene and environmental protection are very important. At present, the food-grade inks used in paper towel flexographic printing machines fully meet the requirements for and environmental protection. In addition, many domestic consumers will invariably raise such a concern when talking about colored napkins, that is, whether the printed ink will stain the skin orute the surrounding environment when using such brightly colored napkins. In fact, there is no need to worry about this. When choosing inks, the napkin printing factory has considered these issues, especially the abrasion resistance, water resistance, and anti-bleeding properties of the inks, which are very important technical indicators. The inks used napkin printing have to undergo repeated skin contact tests and abrasion and anti-bleeding tests, especially in home life, there may be many substances that can easily cause ink.

   Therefore, compared with ordinary water-based inks, certain ingredients are added to the formula of napkin printing inks to effectively prevent the inks printed on napkins from or dissolving when they come into contact with water or strong alkaline substances. The printing adaptability of napkin printing inks is also very important. During the printing process, is necessary to keep its pH value, viscosity, and other properties stable, and the drying property is suitable, in accordance with the printing speed and post-printing processing requirements. printing speed of the paper towel flexographic printing machine can be as high as 700m/min or 10,000 sheets/min. During highspeed printing and high-speed folding, the stability of the ink properties is very important. Incorrect ink viscosity may cause breaks; if it dries too slowly, it cannot meet requirements of high-speed production; if it dries too quickly, it will cause dirty plates.