Polyester
The synthetic raw material

The production process

Polyethylene terephthalate (PET) belongs to the category of polyesters. A polycondensation reaction of terephtalic acid and ethylene glycol synthesises into PET. PET is produced by a melt spinning process.
 
The melted polymer is pressed through spinning nozzles and an antistatic agent is added to prevent the individual fibres from static charging. After stretching to ease further processing the fibres are crimped and cut in a final step.
 

The properties of polyester

  • low moisture absorption (0.2 - 0.5 %)
  • high melting temperature (250 - 260 °C)
  • UV resistant
  • low resistance to alkalis
  • temperature resistance (150 °C)
  • smooth surface texture
  • flammable (LOI 20 - 22)
  • thermoplastic