The key feature that makes two polymers distinctive is the use of alcohol resulting in ester group. Polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) both belong to the polyester family. Let’s begin by comparing apples with apples. Also do not forget, PET is one of the most recycled thermoplastics as well.Īdditionally, there have been continuous efforts to tailor PET properties for improved performance with beneficial cost profiles to meet high-end application demands.Īt the same time, polypropylene, polyethylene and polyvinyl chloride are equally popular for these benefits, so how do you find which one is suited for you? In this guide, you will find out the key knowledge to find the suitable grade among thousands of options available. For all the applications demanding lightweight and impact-resistant material, PET is of your choice. You find the polymer used in packaging, fabrics, films to molded parts for automotive, electronics and many more. PET is among those plastics which are an important part of your everyday life. Most common application include rigid and flexible packaging as it is very light weight. It has a semi-crystalline form when stable. It is widely used in everyday items and easily recyclable. Polyethylene terephthalate or PET belongs to the family of polyesters. It shows resistance to impact, moisture, alcohols and solvents. It finds use in packaging, textiles, films to molded parts for automotive, electronics. It is used in everyday items and easily recyclable. Polyethylene terephthalate (PET) is an aliphatic polyester.