Processing technology of cosmetic glass bottles

Coloring process

1. Electroplated aluminum: The aluminum surface is wrapped in a film on the inner plastic layer.

2. Electroplating (UV): Compared to spray painting, the effect is bright.

3. Spray coating: Compared to electroplating, the color is dull and matte.

Inner bottle external spraying: It is spraying on the outside of the inner bottle, with a clear gap between it and the outer bottle when viewed from the outside, and the spraying area is small when viewed from the side.

Spray on the inside of the outer bottle: It is spray painted on the inside of the outer bottle, which appears to have a larger area from the outside, a smaller area from a vertical plane, and no gap with the inner bottle.

4. Brushed gold and silver coating: It is actually a film, and upon careful observation, the gaps that connect can be found on the bottle body.

5. Secondary oxidation: It is a process of secondary oxidation on the original oxide layer to achieve a smooth surface covered with dark and matte patterns or a glossy pattern on the dark and matte surfaces. It is commonly used in logo production.

6. Injection molding color: It is the process of adding color powder to the raw materials during product injection molding. The process is relatively inexpensive, and bead powder can also be added. Adding cornstarch will turn PET transparent color into opaque color.

Printing process

1. Screen printing: One type is high-temperature ink screen printing, which is characterized by not easily fading, a dull and dull color, and difficulty in achieving the effect of purple color matching. The other type is low-temperature ink screen printing, which has a bright color and high requirements for ink, otherwise it is easy to fall off, and attention should be paid to bottle disinfection.

2. Hot stamping: It is a thin layer of paper hot stamping on top, so there is no unevenness of silk screen printing.

It is best not to directly apply hot stamping on PE and PP materials. Heat transfer printing should be performed first before hot stamping, or good hot stamping paper can also be used for direct hot stamping.

3. Water transfer printing: It is an irregular printing process carried out in water, which produces inconsistent patterns and is more expensive.

4. Heat transfer printing: Heat transfer printing is commonly used for products with large quantities and complex printing, which involves attaching a layer of film on the surface and is relatively expensive.

5. Offset printing: It is commonly used for aluminum-plastic hoses and all plastic hoses. If offset printing is used to make colored hoses white, silk screen printing must be used. Offset printing will have a base color that will be exposed, and sometimes a layer of bright or matte film will be attached to the surface of the hose.