The material of the Cosmetic bottles is usually PP, PE, K material, AS, ABS, acrylic, PET, and the like. It is usually used for injection molding of thicker cream bottles, caps, stoppers, gaskets, pump heads and dust covers for cosmetic containers; PET blowing is a two-step molding, tube blank is injection molding, and finished packaging is blowing. bottle.
PCTA and PETG 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 soft and transparent. PCTA and PETG are soft and easy to scratch, and are not commonly used for printing.
AS hardness is not high, brittle, transparent, 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, and can also make small-capacity cream bottles. , showing a transparent shape.
Acrylic material is hard, transparent, and the base color is whitish, and acrylic is often sprayed in the outer bottle to maintain a transparent texture, or to be colored during injection molding.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.
At present, the PETG injection molding process of cosmetic bottle manufacturers is relatively stable, and does not require a specially designed injection molding machine. The injection temperature is only about 215 ° C ~ 235 ° C, and the PC injection molding process is not easy to control, the injection temperature is as high as 280 ° C, In contrast, they can save power even better. PETG does not easily generate internal stresses during injection molding, which is determined by their molecular structure and their excellent ductility. PCs are more prone to internal stresses, and more than one internal stress post-processing procedure is eliminated. The internal stress of injection molded products is very dangerous, and the serious situation is stress cracking, which will increase unnecessary complaints or claims from customers.
