Polyester is the most widely used technical fibre for dust removal, because of its excellent value for money.
Its thermoplastic aspect enables all imaginable surface treatments and above all the use of heat welding to make filter bags.
The fibre is used for its excellent mechanical strength at temperatures of up to 150°C, but in the presence of humidity and SOX, polyester hydrolyses and is soon weakened.
Polyester fibres are available in many finenesses.
| Properties of the fibre : | |||
| Trade marks : | PES | ||
| Specific gravity : | 1.38 g/cm3 | ||
| moisture absorpition : | 0.4 (20°C H.R. 65% ) | ||
| Tenacity : | 4.5-7.5 cN/dtex | ||
| Elongation : | 11-14 % | ||
| Max continuos temperature: | 140 °C | ||
| Max temperature (peaks) : | 150 °C | ||
| Loi (limit oxygene index) : | 20 % | ||
| Chemical resistance: | |||
| Strong acids : |  |
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| Weak acids : | |
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| Strong alkallis : |  |
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| Weak alkallis : |  |
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| Oxidising agents : |  |
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| Hydrolys : | |
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| Fibre specific solvents : | H2SO4 |
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