Printing color difference of food packaging bag caused by poor ink
Printing ink layer thickness and viscosity is not suitable, easy to produce color difference. In printing, only with moderate and uniform ink layer can the ink quality of the printed matter be guaranteed and the printing smudging fault can be effectively prevented.
Packaging material knowledge: problems in the printing process of food packaging bags
1. In the process of printing ink, there are some problems such as poor adhesion to the surface of the printing ink.
2. The main reasons for this problem are poor quality of printing personnel, poor precision and performance of printing equipment, and improper operation technology.
3. The problem of blade line mark is usually caused by insufficient ink thinness and poor working environment.
4. Color difference often occurs in the process of food packaging bag printing, which is caused by the amount of ink, the mixing of mixed colors, the application of scraper and the unreasonable control of production process.
5. The causes of blocking may be due to the mismatch between solvent and printing speed, the position of the scraper and the impression point are too far, the diameter of the gravure is too large, and the machine is shut down for a long time.
6. The adhesion problem in printing process is caused by insufficient drying, more residual solvents, improper use of two-liquid reactive ink, too much winding pressure and low humorous adhesion. http://www.dgbpk.com/
Dongguan Beite packaging materials Co., Ltd
Dongguan special bag, plastic bag, plastic bag, plastic bag