Polyester fibre is a widely used synthetic fibre. Basic raw materials for polyester fibre production are petroleum, coal, air & eater. From those basic raw materials the Glycol monomer dihydric alcohol and terephthalic acid are produced, which are polymerized into an autoclave at high temperature and polyester chips are produced, which are melt spun.

Length: polyester fibre could be produced in filament from or staple form i.e. as we desire. Fibre length is controllable.

Fineness: fineness of polyester fibre is also controllable.

X-sectional shape: Normal cross-sectional shape is round but it is also made triangular, elliptical or pentagonal.

Strength: normally tenacity varies from 4.5 to 5.0 gram per denier.

Extensibility: extension at break varies from 20% to 30%. Good recovery from extension.

Resiliency: shows good resiliency property. It does not crease easily.

Dimensional stability: polyester fibre is dimensionally stable. It could be heat- set at around 200 degree c.

Moisture regain: very low moisture from 0~0.4%.

Action of bleaching agents: it is not damaged by action of bleaching agents.

Action of sunlight & heat: polyester is unaffected by normal sunlight but prolong exposure to sunlight can reduce strength of polyester. Polyester fibre melts at 227 degree C to 242 degree C.

Dye ability: polyester fibre shows good dye ability at high temperature.

End use: polyester fibre is widely used for apparels both 100% from and blended form with cotton, nylon, wool, rayon, acetate, etc fibre.