In addition to fulfilling all the certification requirements, PTE is obliged to the task of consciously setting new standards across all process levels.
The selection of the raw material has a decisive influence on the quality of the compounds. Therefore, PTE only obtains materials from the leading companies in the respective sector.
For example, the natural rubbers that are to be processed are only obtained from plantations that have been qualified and approved by PTE.
The global network of suppliers includes about 150 companies that are certified as per ISO 9001.
In order to safeguard the high quality standards, PTE uses the following measuring devices in its in-house physical and chemical laboratories:
- Ozone test chamber
- Rheometer measurement
- Measurement of Mooney viscosity
- Measurement of density and hardness
- Tensile tester and abrasion tester
- IR spectrometer
- Differential scanning calorimetry
- Halogen moisture analyser - Karl-Fischer measuring device
- Bead hardness measuring device
Other test methods involve thermal examinations and volumetric determinations. The company also collaborates with selected external test control authorities.