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Precision to Detail


New Polyester Compounds for Precise Applications

For the last 30 years, AKRO-PLASTIC has been a developer and manufacturer of high-quality engineering compounds specialised in the field of polyamides. However, AKRO-PLASTIC has also manufactured a significant amount of polyesters for multiple partners. The compounding lines of FEDDEM, the sister company of AKRO-PLASTIC, are specially designed and optimised to compound polyesters gently and to maintain as much ductility as possible.

AKRO-PLASTIC is excited to launch its new PRECITE® product line for thermoplastic polyester compounds, based on PBT, PET and different blends. PBT compounds are used in applications that require high precision, tight tolerances, good mechanical properties as well as superior heat aging performance. Through the low moisture absorption, Polyester compounds have an exceptional dimensional stability, making them the first choice for precision parts majorly in the automotive, industrial, appliances and E/E industry.

The extraordinary high repeatability and accuracy of AKRO-PLASTIC’s global ICX® Technology is the perfect match for high precision PBT applications. 

The PRECITE® portfolio focuses on glass fibre reinforced PBT and PET up to 50 %. Additionally, low warpage blends like PBT/ASA are available, as well as blends with improved surface quality based on PBT/PET. We also offer PRECITE® with our unique affordable carbon fibre reinforcement, ICF. Moreover our portfolio offers compounds which are hydrolysis stabilized and also compounds with food contact approval. 

Post Consumer


Our sustainable PRECITE® ECO portfolio contains PET based on post-consumer raw materials. It has an outstanding low carbon footprint. Due to its excellent mechanical properties, PRECITE® ECO enables a comparable performance compared to virgin PRECITE®.

PRECITE® ECO offers unique properties such as:

  • Good availability
  • Good mechanical properties
  • Reduced carbon footprint
  • Slower crystallization behavior
  • Comparable performance to virgin PRECITE® compounds
  • Preferred color: black 

As the graphs show, one does not see a significant difference in mechanical performance. If we compare a PRECITE® K GF 50 black (7434), a PBT/PET blend with 50% glass fiber reinforcement, for its strength. It can be seen that it is on the same level (approx. 180MPa) with the PBT/rPET grade PRECITE® K GF 50 ECO Black (8270).

Even with pure PET compounds, the performance of post-consumer PET is remarkable. Our PRECITE® E ICF 30 ECO black (8277), as shown in the spider diagram, performs even better than the Vergin PET compound PRECITE® E ICF 30 black (7429). Both have tremendous stiffnesses of >23GPa and strength of <215MPa. In these two cases, the carbon fiber also plays a supporting role, the special carbon fibers creating a perfect bond with the matrix.


Product Characterisation

PRECITE® thermoplastic polyesters are based on polybutylene- or polyethylene-terephthalate – (PBT or PET) – and have a unique combination of properties to cover the high requirements of a variety of complex applications. PRECITE® features a very high stiffness and strength as well as low moisture absorption leading to an exceptional dimensional stability. Furthermore PRECITE® has an outstanding heat aging performance as well as excellent gliding properties and wear resistance.

Find the Right Polyester for Your Application

A selection of polyester compounds for your applications.

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Carbon fibre reinforcement


Next to our AKROMID® grade line we also offer the affordable carbon fibre reinforcement ICF that harmonises extremely well with PRECITE® and offers lighter weight solutions especially for the automotive market. PRECITE® P3 ICF 20 has similar properties to a PBT GF 30, offering 10 % reduction of density. PRECITE® ICF 30 can replace a PBT GF 50 and save part weight up to 18 %.



PRECITE® has a unique combination of properties to accomplish the high requirements of a variety of complex applications. The most important markets for PRECITE® are the automotive and E/E industry as well as appliances. Generally, PBT is the material of choice for applications with high demands for dimensional stability, strength and rigidity as well as heat aging performance.

Especially in automotive, the dimensional stability, the resistance against fuels and lubricants as well as the good long-term thermal behavior enable PRECITE® to be the first choice for many components in the electric segment. Typical applications are fuse boxes, door locking modules as well as housings for electric motors for wipers, window lift or seat adjustment. Also small components like connectors and switches with tight tolerances require the precision of PBT compounds. 

In opposite to nylons the high stiffness of PRECITE® is independent from moisture. Along with the weather resistance, PRECITE® can be also used for exterior applications like wiper arms, mirror housings as well as elements of sunroofs. 

Furthermore, the color stability, also at elevated temperatures, enables visible applications in the E/E and appliance sector, like oven handles, knobs or switches as well as light bulb housings.

Disclaimer: All specifications and information given on this website are based on our current knowledge and experience. A legally binding promise of certain characteristics or suitability for a concrete individual case cannot be derived from this information. The information supplied here is not intended to release processors and users from the responsibility of carrying out their own tests and inspections in each concrete individual case. AKRO®, AKROMID®, AKROLEN®, AKROLOY®, AKROTEK®, ICX®, PRECITE® and DIA(hr)LOG® are registered trademarks of AKRO-PLASTIC GmbH.

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