The paper industry provides a part of raw materials for the food packaging industry, and also drives the diversified development of the packaging industry. Today, take you into the food packaging to see the details that need to be paid attention to.
Food packaging bags can be divided into general food packaging bags, vacuum food packaging bags, expanded food packaging bags, boiled food packaging bags, steamed food packaging bags and functional food packaging bags according to their application scope. There are many applications of food packaging bags, so what should we pay attention to when printing food packaging bags? 1、 In the printing of food packaging bags, the pressure of the roller should be adjusted properly, and the rubber will be rolled if the packaging bag is printed carelessly; if the ink color is too heavy and the solid bottom is too large, it is easy to stick rubber or ink roller. Therefore, before printing to reduce the pressure of the drum, the rubber lining to reduce. In order to avoid sticking rubber and rolling rubber, we should add more additives or rutting adhesive to the ink, at the same time, look good, avoid double sheets, multiple sheets and paper skew, and ensure that the pressure is even without rolling rubber.
2、 The printing of food packaging bag, like other printing products, needs to be accurate, otherwise it will affect its quality. During printing, the height of front gauge and side gauge pressboard shall be adjusted according to the thickness of paper. At the same time, the pressure of presser wheel and brush wheel on the pressboard shall be adjusted, and the loose paper cloth belt shall be tightened. When the machine is turned on, it is found that the rules are not good, and it is necessary to check the paper feeding situation, as well as the pressure of the paper passing wheel and the paper pressing wheel in time; for thicker paper, the pressure of the paper pressing wheel and the brush wheel should be heavier. In addition, the time of paper cutting and drawing, as well as the hand over time between the side gauge and the swing teeth are detected, and problems are found to be handled in time until the upper, lower, left and right rules are accurate and error free.
3、 Ink color has a direct impact on the quality of printed matter, while packaging plays an important role in the protection and decoration of goods. The quality of packaging and printing will directly affect people's aesthetic and consumption. Therefore, when printing packaging materials, it must conform to the quality standard. To complete the delicate and beautiful products, we need to carefully complete every step of the printing process, so as to have considerable profits and quality.