Polyethylene Terephthalate (PET)

Polyethylene terephthalate is a polymer that is used in most countries to produce polyester fibers (70%), film resins (22%), film (6%) and polyester engineering resins (2%), but in Iran this polymer is more used for different types of drinking bottles. Due to the high resistance of these bottles to breakage, temperature and gas penetration, having low weight and low price compared to other packaging materials such as glass and metal, the production of plastic bottles from this resin has been used widely. Which, of course, causes the consumption of PET bottles to flow into the municipal waste stream. The high volume of these bottles compared to the weight, which takes up a lot of space during transportation and burial, and its very long decomposition in nature (about 300 years), has caused the problem of recycling these bottles to attract everyone's attention especially in recent years.