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About Rope Suppliers
Rope suppliers and rope distributors, also known as
cord, line, string or twine suppliers, has, for much of human history,
been used in applications that require pulling and connecting. Many uses
for rope suppliers and rope distributors exist throughout the world,
especially in the marine, sailing, industrial, arborist, recreational,
outdoors, rigging, safety and military industries. The smallest components
of a rope are fibers, which, when twisted together, make yarn. Yarn,
in turn, is twisted together to create strands, which are then twisted
or braided together to create rope. Rope fibers can be either natural
or synthetic; the best fiber to use varies by application. Some types
of rope are naturally very strong and can handle heavy loads, although
wire rope often supplants natural and synthetic ropes for the heaviest
loads.
Natural rope types include manila, sisal, linen, jute and cotton. Manila
is a very hard rope that is popular in construction because it is resistant
to sunlight, stretches very little and will not melt when exposed to
heat like some synthetic ropes. Sisal has less strength than manila but
very good knot-holding ability, and thus is used in applications such
as gardening and bundling where high strength is not a requirement. Cotton
rope is very soft, pliable and easy to handle, but it is not as strong
as other natural and synthetic ropes. Synthetic ropes, such as nylon,
polyester, polypropylene, polyethylene, Kevlar and various co-polymer
blends, tend to be stronger than natural ropes. Nylon is the strongest
that rope suppliers and rope distributors use, and has a “memory” to
return to its original shape after being stretched. Nylon rope also has
very good shock absorption and is resistant to abrasion, sun and chemical
damage. Applications for nylon rope include lifting and towing. Polyester
rope, the most common rope used in the boating industry, does not stretch
as well, absorb shock or last as long as nylon rope, but it has better
resistance to abrasion and chemical damage. Another type, polypropylene
rope, is the only rope that floats, and it is used as a divider in many
pools. However, it has the weakest UV resistance and the lowest melting
point of all the ropes, and should not be left out in the sun.
The two main types of rope construction are twisting and braiding. Twisting
involves coiling three strands tightly in the same direction, although
the yarn within the strands must be twisted in the opposite direction.
This counter-twisting produces an all-around balanced rope that will
stay together without kinking. Once twisting is complete, each end must
be fused to prevent unraveling. Historically, twisting has been the most
popular form of rope construction. However, in modern times most ropes
have been braided. One advantage of braided ropes is that they do not
spin or untwist while holding a load. Braided ropes are either single
braided or double braided. Single braided ropes have no core, while double
braided ropes have a core of either the same or a different material.
Double braided ropes are stronger, but they cannot be spliced. Splicing
is a useful way to create a joint between two ropes or two ends of the
same rope by interweaving the strands together.
Proper care and storage should be implemented to extend the life of a
rope and ensure its continued safety. Ropes need to be manually checked
before and after each use for deformations and damage. If damage has
occurred, such as fraying or a visible core, the rope should not be used.
In the case of unraveling, a quick fix is to melt wax on the rope end,
or, for a synthetic rope with a low melting point, to melt the end of
the rope itself. The ends of natural fiber ropes can be tied together
with twine to prevent further unraveling. It is important to keep ropes
clean, because dirt, sand and small stones that get into a rope’s
interior can cause abrasion. If a rope is dirty, wash it with clear water
and dry it out of the sunlight. Your rope suppliers or rope distributors
will tell you when not in use, a rope should be stored in a place of
moderate temperature and low humidity. While in storage, keep ropes out
of direct sunlight, to prevent melting, and away from corrosive chemicals.
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Types of Rope
- is made of three or more interwoven yarns.
- is the general term used to refer to any length of fibers, including ropes, cord, lines, and strings.
- is soft and pliable, but it does not
have the strength of other rope.
- is the brand name of the synthetic rope made by the DuPont company. Kevlar rope has more strength pound-for-pound than steel.
- is a hard, natural fiber rope that is used for public utility
construction. Manila rope will not melt under high temperatures like
synthetic rope.
- is the strongest of all rope, and
is useful in applications that require high shock absorption. When
stretched, it “remembers” and
returns to its original shape.
- is almost as strong as nylon rope, but it does not stretch
as well. Polyester rope is popular in the boating industry.
- is an inexpensive, light-weight, popular all-purpose
rope, but it is less strong than nylon and polyester rope, and will
deteriorate the most quickly in sunlight.
- is a hard, natural fiber rope with less strength than manila
rope. Common uses include applications in which strength is not a necessity,
such as gardening.
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