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Polypropylene is an olefin fiber which is very strong and resilient.

yarnpackage2 A manufactured olefin fiber made from polymers or co-polymers of propylene. The resulting fiber has a high degree of crystallinity (72 to 75%), so it is very strong and resilient.

Polypropylene fiber properties include:
  • Lightweight (floats on water)
  • Extremely low moisture regain
  • Quick drying
  • Highly resistant to mechanical abuse
  • Mildew and insect resistant
  • Chemical resistant
  • Abrasion resistant
  • Sunlight resistant
  • Colorfast
Sample polypropylene applications:
  • Filtration media
  • Protective clothing
  • Outerwear
  • Binding materials

Technical Data

Tenacity (g/denier) 3.5 - 4.5
Elongation at break (%) 25 - 30
Shrinkage at 177°C (%)
Melting point (°F) 325 - 335
In flame Burns slowly and melts
After flame Continues to burn
Chemical resistance Excellent resistance to acids and bases
Specific gravity (g/cc) 0.90
Moisture regain (%) <1.0
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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