The Difference between Nylon, Polyester and Polypropylene Hook and Loop
Hook and loop fasteners, commonly known by the Velcro® brand name, come in a variety of strengths and materials to handle everything from home and garden tasks to heavy-duty and industrial-strength jobs. Cuffs, bands, strips and specialty versions of hook and loop fasteners can be purchased in polyester, polypropylene and nylon materials for use in automotive, medicine, military and many other industries. While each type of fiber offers its own benefits, the type of task it will be performing is the best way to make a selection.
Nylon and Polyester are almost identical in appearance. Nylon is an incredibly strong, lightweight and shrink-resistant material. Nylon is mildew-resistant and dries very quickly, but it does not float. It is somewhat resistant to ultraviolet rays and can withstand high temperatures. Nylon's smooth surface provides a crisp background for graphic and logo imprinting on products such as straps. Nylon strap fasteners, like this Velcro® Brand nylon loop tape, provide a sturdy and reliable hold and are far and away the most common hook and loop.
Polypropylene hook is molded into a variety of different styles.[/caption]
Polyester is an alternative choice for hook and loop fasteners. A synthetic fiber made from ethylene, which comes from petroleum, polyester is resistant to mildew as well as stretching, pilling and shrinking. Polyester has a low tolerance for high temperatures and tends to dry slower than other fabrics. It is most resistant to ultraviolet light, but does not float. Hook and loop fasteners made of polyester provide a strong hold and closure. Check out this sew-on polyester hook tape to use on clothing, bags, and other fabrics.