Kernmantle Rope

Kernmantle rope (derived from the German kern "core" and mantel "sheath") is a woven outer sheath with an inner core designed to optimize strength, durability and flexibility. A rope with a protected structure. The core fibers provide the rope's tensile strength, while the sheath protects the core from wear during use. This is the only rope construction that is considered a life-safe rope by most fire and rescue operations.

Parachute cord (also called paracord or 550 cord when uhmwpe winch rope referring to Type III paracord) is a lightweight nylon kernmantle rope originally used for parachute suspension lines. This code served many other tasks and is now used by both military and civilians as a general utility code.

One of the uses of cologne mantle rope is as a climbing rope. Nylon ropes, once used for hauling yachts, have been tested to be useful for mountaineering and caving, and are now the modern standard. Germany's Edelrid introduced the first Cologne Mantel rope in 1953, revolutionizing fall protection. Hemp climbing ropes are a thing of the past and rope breakage has greatly decreased. In 1964, Edelrid and Mammut both developed dynamic ropes that could withstand multiple falls. These were the forerunners of modern dynamic climbing ropes. Although there have been occasional innovations, the ropes in use today are similar in construction, strength and durability from all manufacturers. Overall, there is a huge variety of climbing ropes available for different purposes. For example, there are well over 100 dynamic single ropes (the most common rope system in climbing). Kernmantle ropes are still used in sailing and other sports, but the technical requirements are usually less stringent for purposes such as mountaineering. Small kernmantle ropes are commonly called accessory cords. It is often used to make Prusik knots and loops and to attach accessories such as chalk bags. Depending on the ultimate use of a rope, one or more of its many properties (material, construction, finish, color, strength, durability, elasticity, flexibility, price, etc.) will be modified, possibly at the expense of others. For example, ropes used in caving generally experience increased wear, so mantles are more tightly woven than ropes used in climbing and rappelling. However, the resulting rope is cumbersome and difficult to tie knots. Kernmantle construction can be used for both static and dynamic ropes. Static ropes are designed to have relatively little stretch and are most useful for applications such as towing and rappelling. Dynamic ropes are used for belaying climbers and are designed to stretch under heavy loads and absorb the impact of falling climbers. Dynamic ropes manufactured for climbing are tested by UIAA. For the "single" standard rope test, an 80 kg (176 lb) weight is tied to the end of the rope. This weight is then dropped 5 meters (16 1/2 feet) onto a 2.7 meter (9 foot) rope and the rope runs over a rounded surface that mimics a standard carabiner. This process repeats until the rope breaks. For "double" ropes, the weight is 55 kg, for twin ropes two strands are used. In addition to the number of drops, the force of impact is also measured. It's a common misconception to think that the number of drops in a drop test (performed by the UIAA) is the actual number of climbing drops a rope can withstand before it becomes unsafe. Drop test drops are extremely harsh, and real climbing drops often do not provide comparable forces. This provides an added margin of safety for climbers using such ropes, even as they age.

Kernmantle ropes should be inspected before and after each use for damage of any kind. A "booger", indicating internal damage to the kernel, appears as a tuft of white thread protruding from the mantle. Extremely stressed ropes have visibly or visibly thinned tapers due to collapsed or torn core strands (incomplete). A split core strand can no longer provide full strength to the rope and (if not tightly woven) tends to break free with use and twist and twist toward the undamaged end. A rope that is worn or cut with sharp edges should be carefully inspected by an experienced user. You can choose to cut the rope at that point without risking the rope breaking at that point. To clean the rope, form it into a chain sinette to prevent excessive tangling and launder in a drum clothes washing machine using soap flakes. Do not use aggressive cleaning agents such as bleach or detergent on life-threatening nylon parts. Commercial rope cleaning equipment is also available, but should be used judiciously to avoid kinking (and weakening) the core strands.