Kevlar Kevlar is a proprietary synthetic fiber developed by DuPont in 1965. Kevlar is an aramid; aramids are a class of heat-resistant, durable synthetic fibers. These qualities of strength and heat resistance make Kevlar fiber an ideal construction material for certain types of rope. Ropes are essential industrial and commercial utilities and have been since before recorded history.
Kevlar ropes are used in construction, marine contexts and even for consumer recreational purposes. They are used as mooring lines for ships and recreational watercraft, as furniture components, as hauling utilities and for a host of other purposes. Kevlar cables are strong enough to support the weight of suspension footbridges; Kevlar rope has more strength pound-for-pound than steel. These ropes feature low elasticity, high strength, high chemical resistance and are easy to splice. Some other applications of Kevlar rope include mine sweep cables, riser tensioners, moorings on oil rigs, winch lines for utility trucks, helicopter slings, oil containment booms and the lift lines of light-duty cranes.
Kevlar ropes and cords are just one example of the many kinds of synthetic and natural cordage. Cord materials are chosen based on the demands of their applications, and because there are so many contexts in which cords and ropes are applied, a wide range of cord compositions and configurations is available to accommodate them. The two main rope configurations are braided and twisted. Braided rope features several interwoven strands of fibers for added strength and durability. It is very difficult for braided ropes to become unwound, making them a popular choice in demanding applications involving high amounts of stress.
The other main rope variety is twisted rope, which features several strands of rope wound around each other. This configuration is often sufficient even for demanding applications, as the tightness of rope winding can keep many twisted rope varieties from becoming unraveled. Ropes are available in natural and synthetic compositions. Natural rope varieties include manila rope, cotton rope and many other examples. Other synthetic varieties include nylon, polyethylene and many others. Kevlar is among the strongest of all fiber varieties, making it very popular for demanding applications.