What are polyester bottle flakes?

The full name of polyester bottle flakes is bottle-grade polyester chips. Its chemical name is polyethylene terephthalate (referred to as "PET"), and its chemical formula is (C10H8O4)n. According to downstream uses, it can be divided into four types: water bottle flakes, oil bottle flakes, hot filling, and carbonic acid.

Polyester bottle flakes are crystalline polymers with a relative density of 1.30-1.38, an amorphous glass transition temperature of 69°C, a melting point of 250-265°C, a long-term use temperature of 120°C, and can be used at 150°C for a short period of time. Its film tensile strength is equivalent to that of aluminum film, which is 9 times that of PE film, with a light transmittance of 90%, excellent electrical insulation, and good electrical performance under high temperature and high frequency. Polyester bottle flakes are often used in packaging in industries such as food, beverages, cosmetics, and medicines. They have the advantages of being lightweight and recyclable, and are widely used in the modern packaging industry.