Which one is better, PET cosmetic packaging material hose or PP cosmetic packaging material hose?

We all know that there are many kinds of cosmetic packaging material hoses, and different materials have different characteristics. Let's compare the PET cosmetic packaging material hose and PP cosmetic packaging material hose.

Polypropylene (PP) application areas: microwave tableware, basins, plastic barrels, thermos shells, woven bags, etc.

Features: High chemical stability, good hygiene performance, and high heat resistance. Microwave tableware can be made of plastic products marked with PP.

Toxicity: non-toxic, harmless to humans.

The polymer can have three three-dimensional structures: isotactic, syndiotactic and atactic polypropylene. The former two can be crystallized, but the latter cannot. Commercially available polypropylene products basically have an isotactic structure, with a melting point of 164-170 degrees Celsius, a density of 0.935 g/cm3 in the crystalline part and 0.851 g/cm3 in the non-clean part.

The biggest disadvantage of PP is that it is easy to oxidize and age. Now it is overcome by adding antioxidants and ultraviolet light absorbers.

Polyester (PET) applications: plastic beverage bottles, medicine bottles, cosmetic bottles, oil bottles and various bottle caps and thermal insulation caps.

Features: Good transparency, not easy to break, good chemical stability, suitable for a variety of liquid or solid medicine packaging. It has good shielding properties to ultraviolet rays.

Toxicity: non-toxic.

PET cosmetic packaging material hose is the mainstream of beverage packaging. The leading position in China's beverage packaging industry should be PET cosmetic packaging hoses. So far, no better packaging materials have been found to replace PET cosmetics packaging hoses. PP bottles are mainly one-step injection stretch-blow and two-step heating stretch-blow molding machines. The PP bottles are transparent, robust and heat-resistant, and the price is lower than that of radical materials. Generally, the PP cosmetic packaging material hose is mixed with 0.1%-0.4% sorbitol xylene nucleating agent. After blowing, blowing, injection, kneading and other methods, it can produce high transparent PP cosmetic packaging material hose. PP cosmetic packaging material hose has good temperature resistance, sensitive bottle shape description, inferior safety, hygiene and taste persistence of the contents, and the price is cheaper than PET, PS, PE and other materials. The use of PP cosmetic packaging hoses in beverage packaging markets has gradually approached PET bottles. The continuous development of modified resins, antireflection agents, and mechanical equipment skills has enabled PP containers to replace glass, PET and PVC containers, and have a wide range of Market prospects.