PET is commonly known as polyester resin. It is a polycondensate of terephthalic acid and ethylene glycol, together with PBT, collectively referred to as thermoplastic polyester, or saturated polyester. PET is a milky white or light yellow highly crystalline polymer with a smooth and shiny surface. Creep resistance, fatigue resistance, friction resistance and dimensional stability, abrasion resistance is small, hardness is high, and it has the highest toughness among thermoplastics; good electrical insulation performance, low temperature influence, but poor corona resistance. Non-toxic, weather-resistant, chemical resistant, stable, low water absorption, resistant to weak acids and organic solvents.
In many fields, plastic bottles are an important form of packaging. Beverages, foods, cosmetics, pharmaceuticals, daily necessities and chemical raw materials can all be stored in plastic bottles. Plastic products have been integrated into our lives. Plastic products are everywhere in life. The demand for plastic products in the packaging market is increasing.
Disposable PET plastic products have occupied a considerable market share, and the quality of plastic bottles is also increasing.
The importance of plastic containers has been gradually highlighted, not only in the beverage market but also in the food, cosmetics and pharmaceutical industries. The development of new filling technology and heat-resistant PET bottles opens up new possibilities and options.
PET bottles are popular in the packaging of beverages, cosmetics, and bathroom products, while PE bottles are used primarily in detergent packaging. In addition, PE is also widely used in milk bottles.