Polyethylene Terephthalate (PET)
One of the plastics you are most likely to come into physical contact with on a daily basis, depending on how it is made PET can be completely rigid or flexible, and because of its molecular construction it is impact, chemical and weather resistant and a terrific water and gas barrier.
Common uses of PET: Soft drink, water, cooking oil bottles, packaging trays, frozen ready-meal trays, First-aid blankets, polar fleece.