Non-woven bags can be divided into two categories: pure non-woven bags and coated non-woven bags. What are they sure about?
Two printing methods: 1. Offset printing, no plate fee, fast production speed, but low printing saturation 2. Silk screen printing, no plate fee, slightly more expensive than offset printing, higher color saturation
Laminated non-woven bag
Four more ways:
1. Matte film; the matte film can be seen from the surface to distinguish the color as a fog-like surface, and the matte matte surface after lamination
2. Bright film; the surface of the bright film is bright and smooth
3. Aluminized film; Aluminized film is to evaporate high-purity aluminum wire into gaseous state at high temperature (11001200 degree ) through vacuum aluminizing process, and then when the plastic film passes through the vacuum evaporation chamber, the gaseous aluminum molecules are deposited into the plastic. A bright metallic color film formed on the surface of the film.
4. Pearlescent film: Pearlescent film is made by mixing polypropylene resin, calcium carbonate and pearlescent pigments by mechanical foaming method, and then biaxially stretched. The specific gravity is only about 0.7, while the specific gravity of PP is about 0.9, and it has a variety of colors. , the decoration is better.
The first three are all printed on the inside, the printing effect is good, the color saturation is high, and the color is not easy to fade. The color reproduction degree of matte film, bright film and pearl film can reach more than 95 percent , and the color reproduction degree of aluminized film can only reach about 85 percent . , The fourth kind of pearl film, because of the characteristics of pearl film, it can only be printed on the surface, and the surface of the non-woven bag is printed with the surface printing ink, so it is easy to fade.
