How do you make the cute patterns on the packaging bags？

As we all know, plastic packaging bags are generally printed on various plastic films, then combined with barrier layers and heat-sealing layers to form a composite film, which is slit and bag-made to form packaging products. Among them, printing is an indispensable key process in the production process of plastic packaging bags. Therefore, understanding and controlling the printing method and quality has become the key. So what are the printing methods for plastic packaging bags?

Printing method of plastic packaging bag:

1. Gravure printing:

Gravure printing mainly prints plastic film, which is used to make various plastic bags and so on.

2. Letterpress printing:

Toppan printing is mainly flexographic printing, which is widely used for printing on various plastic bags, composite packaging bags and plastic packaging bags.

3. Screen printing:

Screen printing is mainly used for plastic film printing and various containers that have been formed, and it can also print transfer materials for transferring pictures and texts on special-shaped containers.

4. Special printing:

Special printing of plastic packaging bags refers to other printing methods that are different from traditional printing methods, including inkjet printing, gold and silver ink printing, bar code printing, liquid crystal printing, magnetic printing, pearlescent printing, hot stamping anodized aluminum, etc.