All industries need plastic bottle packaging. As consumers, whether it is plastic bottles for food packaging or those for daily necessities, their bottle bodies are all marked with PET, PP, and PE, which represent the materials of plastic bottle packaging. So, what do these marks specifically mean? What are their specific uses? What should consumers pay attention to when they see these marks?
PET bottle
The scientific name of PET is polyethylene terephthalate plastic. The raw material of PET plastic is in a highly crystalline state, presenting a milky white or light yellow color. PET has excellent optical properties and weather resistance. It is non-toxic and stable, but it is not resistant to hot water immersion or alkaline substances. PET bottle packaging is suitable for food, medicine, cosmetics and other industry product packaging. It is very easy to identify PET bottles. Use a lighter to touch the bottle body. If it gives off a pleasant smell, it is a PET bottle. If it gives off a pungent smell, it is not a pure PET bottle.
PP bottle
The scientific name of PP is polypropylene. The raw material of PP plastic is in a semi-crystalline state. PP material is one of the lighter types of commonly used plastics. It has excellent electrical properties and is used as a moisture and heat-resistant high-frequency insulating material. It is suitable for the automotive industry, daily necessities packaging, etc. In terms of food packaging, PP bottles cannot be used for barrier packaging of carbonated beverages. So consumers should pay attention!
PET bottle
Polyethylene, known by its chemical name, is the world’s largest synthetic resin in terms of production volume and also the most widely used plastic packaging material. Due to its low water absorption, insolubility in water, resistance to moisture, and insulating properties, PE material is not only used in food and drug packaging but also in the construction industry.
PS bottle
Characteristics: High transparency, glossy surface. Applications: Disposable plastic tableware, combs, boxes, ballpoint pen barrels, children’s toys, plastic shopping bags.
