PBT (PolyButyleneTerephthalate): semi-crystalline polymer belonging to the polyester family, with good chemical resistance. It is different than the other polymers for its high electrical (high resistance to the passage of electric current) and the high temperature oxidation resistance (operating temperature), characteristics that are retained even at temperatures up to 135° C, therefore these thermal values of these polymers do not “age” and do not degrade.
As for all the polyesters is very important the dehumidification process of the granule before processing.