The immense strength of the Polyester filament yarns is the reason they are extensively used in the textile industries. Not only the outerwear, but a range of other products as well is created using PFY. The major characteristics of Polyester filament yarns include-

• Usually made of long filament fibre
• Smooth
• Continuous and long
• Lustrous
• Either pretty low or very high twist
• The twist depends of the stretch
• Easy manufacturing
• The construction of fabric decides PFY snagging
• Slick and cool
• Strands are intimately packed