Page 15 - Des Pawson "Knots The Complete Visual Guide"
P. 15

ROPE MATERIALS        13



      Synthetic rope
      Synthetic fibers are stronger than natural fibers and are resistant
      to decay. The most common synthetics used for making rope are
      polypropylene, polyester, and nylon.

      Polypropylene
      Polypropylene is relatively
      inexpensive and varied
      in form.

        Has a tendency to break         Floats in water.
      down in sunlight—needs
      to be treated against             Slightly slippery—
      ultraviolet rays.              needs to be tied with
                                     a secure knot.
        More liable to chafe than
      other synthetic fibers.



      Polyester

      Polyester is one of the best
      ropes for outdoor use.
        Wears well—resistant to
      chafing and sunlight.              Can be purchased
                                     prestretched, meaning
        As strong as nylon but
                                     there will be minimal
      has less stretch.              stretch during use.



      Nylon
      Nylon fibers were the
      first synthetic material to
      be used for making rope.
        Has a degree of stretch—
      particularly good for             Tends to stiffen over time.
      absorbing shock loads.
                                        Resists the ultraviolet rays
         Good for making ropes       in sunlight better than
      used for mooring boats         polypropylene, but not as
      and climbing.                  well as polyester.
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