Polyester Thermoplastic

Polyester is a general term encompassing all polymers in which the main polymer backbones are formed by the esterification condensation of polyfunctional alcohols and acids. Thermoplastic polyesters become pliable above a specific temperature and return to a solid state upon cooling. Common examples include Polybutylene Terephthalate (PBT) and Polyethylene Terephthalate (PET).
See also Polyester Thermoset.
Whittington’s Dictionary of Plastics, 2nd ed., 244-245.