For the current dazzling packaging market, its packaging materials mainly include bottles, cans, tubes, bags, spray cans and so on.
1.Bottles are mostly used for packaging emulsions with low viscosity, water-based cosmetics, such as lotions, lotions, and lotions. The materials used in cosmetic plastic packaging bottles are: PE, PP, PET, composite materials, etc.
2.Jars are also commonly referred to as jars, which are often used in the packaging of creams and cosmetics; such as day cream, night cream, eye cream and so on. The main materials are PP, PET, PETG, etc.
3.The tubes include plastic tubes, composite tubes, and aluminum tubes, which are mainly used for packaging facial cleanser, sunscreen, hand cream, etc. The cover material is generally PP, the tube shoulder and neck material are generally PE, and the tube body uses single-layer film, composite film, etc., according to the number of layers, it is divided into single-layer, double-layer, three-layer, and five-layer pipes.
The general compatibility test is to pack the content in the packaging material and place it at different temperatures such as -20 degrees, 25 degrees, 40 degrees, etc. Observation, of course, set a specific light intensity if possible, observe 1 Month to March, or longer cycle.
After the test, evaluate and record the appearance of the packaging material, the weight loss rate of the contents, the aging condition, the color migration condition, and the stress cracking condition.