Polyesters are polymers with ester bonds. Polyester is a resilient material resistant to stretching, it maintains its shape and does not bend, is a non-hygroscopic material, it does not absorb water, is hard to stain, and melts at high temperatures. 

The operating temperature range is from -40 to +120°C. Polyester belts can be applied in handling operations, which require the above material properties to be met.