Polyester

In its molecular structure, polyethylene terephthalate (PET) - TECAPET - is available either as an amorphous or semi-crystalline thermoplastic. Whereas the amorphous type is highly transparent and has a lower mechanical strength, as well as substantially inferior sliding characteristics than the semi-crystalline type, semi-crystalline types have higher hardness, rigidity and strength with outstanding sliding behaviour and low sliding wear (compared to POM in damp or dry environments).

Due to its good creep strength, low moisture absorption and outstanding dimensional stability, PET is extremely well-suited for applications where complex parts and the highest requirements regarding dimensional accuracy and surface quality are needed.

Polybutylene terephthalate (PBT) - TECADUR PBT - is a semi-crystalline thermoplastic of the polyester family, which crystallizes very slowly and is therefore available in an amorphous-transparent or crystalline-opaque condition, depending on the processing method.
PBT is particularly characterized by its high strength, rigidity and thermal deformation resistance, as well as its very high dimensional stability and low tendency to creep. Furthermore, PBT, like all polyesters, has very good frictional and wearing properties. Compared to PET, PBT has a better impact strength - particularly at low temperatures.

Polycarbonate (PC) - TECANAT - is an amorphous polymer of the polyester family. Due to its low degree of crystallinity, PC has a high degree of transparency. PC is characterized by high strength, rigidity and hardness. Furthermore, PC is also very impact resistant.
By comparison to its chemical resistance, this material is very resistant to external influences such as weather and UV-radiation.