Mothers can squeeze out milk when breast milk is sufficient, and store it in a milk storage bag for refrigeration or freezing, so as to prepare for use in the future when milk water is insufficient or cannot be used for the child's feeding on time due to work and other reasons. So you know what breast milk bag printing has, you know, the following small knitting to tell you.

 

1. Letterpress

 

When the ink is applied to the prominent appearance and is covered with a piece of paper on the surface of the ink, the ink is transferred to the breast milk bag. The method of printing by using this principle is called letterpress printing.

 

Letterpress is the oldest printing method. Nowadays, there are many different printing plates used in different types of printing machines to print rich and colorful products.

 

2. Flexographic printing

 

The most common breast milk bag is flexographic.

 

Flexographic printing is a kind of direct printing method. Flexographic printing is called flexographic printing because of its elastic and convex image printing plate. The flexograph plate is fixed on the plate drum, and the printing plate is fed by a carved metal mesh roller.

 

3. Gravure printing

 

Gravure printing transfers ink from a prominent appearance to paper, and gravure printing process is exactly the opposite. In the process of gravure printing, ink is transferred from a concave appearance to paper, and the graphic part on the gravure is lower than or trapped in the print appearance.

 

In the printing process, first apply ink to the whole printing plate appearance, then wipe the layout clean, if so, the ink is left in the concave part of the plate, and then press the breast milk bag on the plate, and the ink will be transferred to the paper.

 

Dongguan Huadi packaging products Co., Ltd. specializes in the production of infant and child feeding bags, food, daily mouth bags, self-supporting valve bags, box in bags, food packaging bags, special water bags and other packaging series.