Raw materials

All our products are made of high tenacity raw materials. Our suppliers are selected following the criterion of the highest quality and reliability.

Today, high tenacity ropes are made from synthetic or synthesized materials, being the most common polyamide, polyester, and polypropylene, followed by aramid and polyethylene.

In all of them, the different manufacturing processes have given them different characteristics: thus, polyester ropes tend to be more resistant but their buoyancy index is lower than polypropylene ropes, and aramid ropes have the melting point higher, to mention just a few differences.

In the following table we show a detailed comparison of the technical properties of the fibers with which we work at Folch Ropes.

 

Technical properties of high tenacity synthetic fibres

Material Polyamide Polyester Polypropylene Monofilament Polypropylene Multifilament Copolymer PET/PP Polyethylene,
high modulus
Aramid
Trade names Nylon®, Perlon® Diolen®, Dacron®, Trevira® Folch Folch Polysteel, Danline Dyneema®, Spectra® Technora®, Kevlar®
Tenacity gr/denier 7 - 9 7 - 8,4 5 - 6 5 - 7 6 - 7 25 - 38 20 - 25
Density 1,14 1,38 0,91 0,91 0,91 0,97 1,39
Melting point in ºC 215ºC 250 - 260ºC 160 - 165ºC 160 - 165ºC 145ºC 140ºC 500ºC
Water absorption % 1 - 7% 0,5 - 2% 0,01% 0,5 - 1% 0,01% 0,01% 2 - 5%
Knotted strength % 60 - 65% 55 - 60% 55 - 65% 55 - 65% 55 - 65% 35 - 50% 30 - 40%
Elongation aat break % 16 - 27% 10 - 17% 14 - 24% 15 - 22% 10 - 12% 3 - 8% 2 - 4%
Abrasion resistance Excellent Excellent Weak Weak Weak Good Weak
UV resistance Good Excellent Weak Good Weak Regular without treatment Weak