The strength , breaking tenacity of 4 to 7 g/d ,and abrasion resistance of polyesters are quite high, therefore strong fabrics can be made from them. (36)
Specific gravity of polyester fibres (1.38 g/cm3) is moderate, therefore fabrics made from polyesters are medium in weight
Polyester fibres have very good dimensional stability , but they may shrink at very high temperatures. (37)
4-Elasticity and resilience
The elasticity of polyester is generally good as polyester recovers well from stretching . Resilience of polyester fibres is excellent ( good recovery from wrinkling) (38).