Semi-finished product is very important, it directly determines the yield of the finished product: if the thickness of the semi-finished product is uneven, then the sealing bag and other processes will appear on one side of the thick side thin, then one side of the plastic bag is not sealed, the other side has the phenomenon of hot melt.
A roll of film will be printed when it is ready. Blank bags are not printed and directly processed into bags.
Plastic packaging bag printing often use Gravure Printing, gravure printing not only beautiful,but also suitable for the number of long-term printing bags. Because can use long time of copper plate. We need to order several colors of the copper plate according to your design , and need to adjust what color of ink, each color corresponding to an ink slot. The copper plate can printing 100,000 bags or more bags.
After printing ,we will be make it to a bag and shipping .