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Polyester fiber is lightweight, bio-compatible, quick-drying, and versatile.

quillsPolyester is a manufactured fiber, in which the fiber forming substance is any long-chain synthetic polymer composed of at least 85% by weight of an ester of a substituted aromatic carboxylic acid. This includes, but is not restricted to, substituted terephthalic units and parasubstituted hydroxy-benzoate units.

Polyester fiber properties include:
  • High strength
  • Dimensional stability and strength
  • Lightweight
  • Resistant to shrinking
  • Controlled elongation
  • Abrasion resistant
  • Mildew-resistant
  • Flexible
  • Low moisture absorption
  • Quick drying
  • Chemical resistance in specific environments
  • Bio-compatible

Technical Data

Tenacity (g/denier) 8.8 - 9.1
Elongation at break (%) 13.9 - 14.3
Shrinkage at 177°C (%) 7.9
Melting point (°F) 493
In flame Burns slowly; melts and drips
After flame Self-extinguishes
Chemical resistance Good resistance to weak alkalis & weak acids. Moderate resistance to strong acids & alkali
Specific gravity (g/cc) 1.38
Moisture regain (%) 0.4
Disclaimer: Values are only a guide. Actual values depend on manufacturer and exact type of yarn. Please contact our engineering team for specific values as they relate to your application.

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Additional Resources