The production date and product batch number on the food plastic bags or milk cartons and other packaging are originally used by the traditional inkjet coding machine. With the improvement of food standards, traditional inkjet coding machines are gradually replaced by laser marking machines.
Laser marking machine has fast marking speed, high efficiency, no consumables, and pollution-free. It is convenient and fast to operate. The computer software can be operated in the graphic. You can change the marking pattern at will. You can also set the serial number of an automatic increasing or decreasing. You do not need to replace the mold. The marked pattern is permanently indelible.
The equipment applied in the food plastic bags or milk boxes are mainly UV laser marking machine and CO2 laser marking machine. These two laser marking machines have a good effect on the above packaging materials and can clearly engrave.
Some large brand enterprises such as Mengniu, Yili, Coca-Cola, etc. are using laser coding machine to mark the products, which improves the production efficiency and saves a lot of labor and inkjet printer, solvent costs.