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Strength Polyester is a strong fibre when compared to the natural fibres. Its strength can be controlled based on the intended end-use of the fibre in the range of 2.5 gm to 9.5 gm/denier. Fibres with lower tenacities are utilized for apparels. Fibres having more than 7 gm/denier tenacity are utilized for industrial applications. While blending polyester with other fibres, strength will also form an important criterion.
Elasticity Polyester is one of the textile fibres that exhibit good elongation and elastic recovery. The elongation is more in case of fibres of low tenacity and it is less when the strength is high. Polyester fibres exhibit high recovery under low stress. Recovery is 97 % at 2 % elongation.
Resiliency Polyester has excellent resilience.This property helps in resisting wrinkles and provide excellent recovery if creased.
Abrasion resistance Polyester has very good abrasion resistance.
Moisture Regain: Polyester is a hydrophobic fibre and has a regain of 0.4 % at standard conditions. Even at high humidity conditions, it has the moisture regain of 0.6 to 0.8 %. But the fibre has ‘wicking’ property which means moisture travels on the surface of the fibre, so as to keep the wearer comfortable.
Dimensional Stability: Polyester fabrics are given a finish called ‘heat setting’ which is a process of setting the dimensions of the fabrics, so that the fabrics neither stretch nor shrink.
Drapability Polyester has satisfactory drape. The drape improves with the change in cross sectional shapes. Heavy polyesters drape well making it suitable for economical draperies.
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