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Company News >> Plastic Material Processing by Makeup Brush Factories

Plastic Material Classes
Plastic material types and classes used by Chinese makeup brush factories mainly include: AS, ABS, PP, PE, PET, PCTA, PETG and acrylic.
AS hardness is not high, brittle (clear sound when knocking), transparent color, and the bottom color is blue, it can directly contact with cosmetics and food. In ordinary lotion bottles, vacuum bottles are generally the material of the bottle body. A small-capacity cream bottle can also be made. It is transparent.
ABS belongs to engineering plastics, is not environmentally friendly, has high hardness, and cannot be directly contacted with cosmetics and food. In acrylic cosmetic packaging materials, it is generally the material of inner cover and shoulder cover. The color is yellow or milky white.
PP and PE are environmentally friendly materials, which can be directly contacted with cosmetics and food. They are the main material for filling organic skin care products. The material is white and translucent. According to different molecular structures, three different degrees of softness and hardness can be achieved.
PET is an environmentally friendly material that can be directly contacted with cosmetics and food. It is the main material for filling organic skin care products. PET is soft and the color is transparent.
PCTA and PETG are environmentally friendly materials. They can be directly contacted with cosmetics and food. They are the main material for filling organic skin care products. The materials are soft and transparent. PCTA and PETG are soft and easy to scratch. And it is not commonly used for printing and printing.
Acrylic is hard, transparent and has a whitish background. In addition, Acrylic often sprays in the outer bottle in order to maintain a transparent texture, or paints it during injection molding.

For handles the most popular plastic class used by Chinese makeup brush factories is ABS, while the other classes are used for packaging.
Plastic Coloring Process
Anodized aluminum: aluminum exterior, wrapped in a layer of plastic on the inner layer.
Plating (UV): Compared to the spray pattern, the effect is bright.
Spray: The color compared to plating is dull.
Frosted sand: a layer of matte texture.
Outer bottle spray: It is sprayed on the outside of the inner bottle. There is a clear gap between the outer bottle and the outer bottle. The side view shows a small area of ​​the spray.
Spray inside the outer bottle: It is printed on the inner side of the outer bottle and looks larger from the appearance. The vertical plane looks smaller. There is no gap with the inner bottle.
Brushed gold and silver: It is a film. Look carefully to find the gap in the bottle.
Double oxidation: It is a secondary oxidation in the original oxide layer, so as to achieve a pattern with a matte surface on the smooth surface or a glossy surface with a dull surface. Mostly used for the production of logo.
Injection color: It is added to the raw material when the product is injection molded. The process is relatively cheap. It is also possible to add bead powder or to add too white powder to make the PET transparent color into an opaque color (add some toner to make the color). The generation of water ripple is related to the amount of added bead powder.
Plastic Printing Process
Silk screen: The effect after printing has obvious unevenness. Because it is a layer of ink. Silk-screened regular bottles (cylindrical) can be printed at one time. Other irregular one-time costs. Color is also a one-time fee. And divided into dry ink and UV ink. Self-drying inks are easy to lose for a long time and can be wiped off with alcohol. The UV ink touches up and has a noticeable unevenness that is difficult to wipe off.
Hot stamping: A thin layer of paper is printed on it. Therefore, there is no silky impression. And hot stamping is best not directly on the PE and PP materials. Hot stamping is required before hot stamping. Or a good bronzing paper can also be directly stamped. You can't do hot stamping on aluminum plastic, you can do hot stamping at full speed.
Water transfer: It is a random printing process carried out in water. The printed lines are inconsistent. And the price is more expensive.
Thermal transfer: Thermal transfer is often used for large quantities and printing complex products. It belongs to a film attached to the surface. The price is expensive.
Offset printing: mostly used for aluminum plastic hoses and all plastic hoses. If the offset printing is a color hose, it must be screen printed when it is white. The offset will have a base color. And sometimes a layer of bright film or sub-film is attached to the surface of the hose.
3D printing: This technical terminology should be called UV inkjet printing. There is no requirement for color and color registration. Basically, what patterns can be printed, and no plate making, convenient coloring, is the darling of major cosmetics brands in recent years. However, there is a requirement for the printing surface, and the curvature of the printing surface should be as flat as possible and the arc drop should not exceed 3 mm.

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