Polyester Fibre (PES)

Polyester Fibre (PES)

Owing to their favourable cost effectiveness polyester fibres are the most frequently used fibre type in filter media. This fibre is manufactured by polycondensation  in the melt spinning process. The chemical parent substances are glycol and terephthalate.

Typical fields of application:

Specific properties
Temperature resistanceContinuous: 140 °C/Peak: 150 °C
Melting point250–260 °C
Spontaneous ignition508 °C
LOI-Value20 %
Density1,38 g/cm³
Moisture pick-up0,2–0,5 % at 65 % relative humidity and 20 °C
Resistance to hydrolysisPoor
Acid resistanceLimited
Alkali resistancePoor
Resistance to oxidationGood
Resistance to solventsLimited

KAYSER FILTERTECH GmbH