There are many materials for plastic bottles. The functions and characteristics of plastic bottles of different materials are different. Here is a comparison between PET plastic bottles and PP plastic bottles.
Characteristics: PE is soft and feels waxy. Compared with the same plastic, it is lighter in quality and has a certain transparency. The flame is blue when burning
Toxicity: nontoxic and harmless to the human body
Application of polypropylene (PP): microwave oven, tableware, basin, plastic barrel, thermos bottle shell, woven bag and so on.
Characteristics: high chemical stability, good hygienic property and high heat resistance. Microwave oven tableware can be marked with the word "PP" plastic products.
Toxicity: nontoxic and harmless to the human body.
The polymer can have three three-dimensional structures: isotactic, syndiotactic, random polypropylene, the former two can crystallize, and the latter can not.
Polyester (PET) applications: plastic beverage bottles, medicine bottles, cosmetic bottles, oil bottles, and all kinds of caps and thermal insulation covers.
Characteristics: good transparency, unbreakable, good chemical stability, suitable for packaging various liquid or solid medicines. It has a good shade for ultraviolet light.
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