Polyethylene terephthalate has use PET bottle
0.70–0.78: general purpose bottles
0.78–0.85: bottles for carbonated drinksMonofilaments, engineering plasticsPET bottle recycling
The only form of PET that is widely recycled in 2022 is the bottle.  These are recycled by 'mechanical recycling' increasingly to bottles but still to other forms such as film or fibre.  Other forms of polyester are not (as of 2022) collected in significant quantities.
Significant investments were announced in 2021 and 2022 for chemical recycling of PET by glycolysis, methanolysis, and enzymatic recycling to recover monomers. Initially these will also use bottles as feedstock but it is expected that fibres will also be recycled this way in future.See also
BoPET (biaxially oriented PET)
Bioplastic
PET bottle recycling
Plastic recycling
Polycyclohexylenedimethylene terephthalate—a polyester with a similar structure to PET
Polyester
Solar water disinfection—a method of disinfecting water using only sunlight and plastic PET bottles