Plastic containers are the main packaging materials in cosmetics, and the core parts of the containers are plastic, such as pump heads, spray caps and bottle caps. Therefore, there is an indissoluble bond between cosmetics and plastics. This article mainly introduces several kinds of plastics commonly used to make a small Science Popularization:
ABS belongs to engineering plastics, which is not environmental friendly and has high hardness. It can't contact directly with cosmetics and food. In acrylic cosmetics, ABS is usually made of inner cover and shoulder cover. The color is yellowish or milky white.
PP and PE are environmental protection materials, which can directly contact with cosmetics and food. They are the main materials for filling organic skin care products. The materials are naturally white and translucent. According to different molecular structure, it can achieve three different degrees of hardness and softness
Pet belongs to environmental protection material, which can directly contact with cosmetics and food. It is the main material for filling organic skin care products. PET material is soft, and its natural color is transparent.
PCTA and PETG are environmentally friendly materials, which can directly contact with cosmetics and food. They are the main materials for filling organic skin care products. They are soft and transparent. PCTA and PETG are soft and easy to scratch. And it is not commonly used for printing.
AS hardness is not high, more brittle (when knocking with crisp sound), transparent color, and the background bluing can directly contact with cosmetics, food, in ordinary emulsion bottles, vacuum bottles are generally bottle body material, also can make small capacity of the cream bottle. It is transparent.
Acrylic material is hard, transparent, and the background color is white. And acrylic in order to maintain a transparent texture often spray outside the bottle, or in the injection of color.