Packaging material technology and production

Coloring process

1, electrochemical aluminum: aluminum appearance, on a layer wrapped in the inner layer of plastic.

2, electroplating (UV) : compared with the spray picture, the effect is bright.

3, spraying: compared with electroplating, the color is dark and matte.

Frosting: A layer of frosted texture.

Spray outside the inner bottle: It is sprayed on the outside of the inner bottle. There is an obvious gap between the outside and the outer bottle. The area of the spray picture is small from the side.

Spray inside the outer bottle: It is sprayed on the inside of the outer bottle to look larger from the appearance. The vertical plane looks smaller. And there is no gap with the inner bottle.

4, drawing gold and silver: it is actually a film, careful observation can find the gap on the bottle body.

5, secondary oxidation: it is secondary oxidation in the original oxide layer, so as to achieve a smooth surface covered with dark matt surface pattern or dark matt surface smooth pattern. Mostly used for logo production.

6, injection color: is to add color powder in the raw material when the product is injected. The technology is relatively cheap. You can also add bead powder, or you can add too white powder to make the PET transparent color become opaque color (and add some color powder to adjust the color). The generation of water ripples is related to the amount of beads added.

Packaging material printing process

1. Screen printing: The effect after printing has an obvious concave and convex sense. Because it's a layer of ink. The regular bottle of silk screen printing (cylinder type) can be printed at one time. Other irregular lump fees. Color is also a one-time expense. And there are two kinds of self-drying ink and UV ink. Self-drying ink is easy to fall off for a long time and can be wiped off with alcohol. UV ink has obvious concave and convex feeling and is difficult to erase.

2, hot printing: is a thin layer of paper hot printing on the above. So there is no sense of concave and convex screen printing. And hot stamping is better not directly on the two materials PE and PP. It is necessary to heat transfer printing first and then hot stamping. Or there is a good hot stamping paper can also be directly hot printing. Aluminum plastic can not do hot stamping, full speed can do hot stamping.

3. Water transfer: It is an irregular printing process placed in water. The print is inconsistent. And it's more expensive.

4, heat transfer: heat transfer is mostly used for large quantities and complex printing products. A film attached to a surface. The price is too expensive.

5, offset printing: mostly used in aluminum-plastic hoses and all-plastic hoses. If it is a color hose to do white must use screen printing, offset printing will have the background color through. And sometimes a layer of bright film or subfilm is attached to the surface of the hose.