Bindingsstrekking

Bindingsstrekking denotes the elongation or stretch of binding materials—such as straps, cords, belting, or fabric bindings—under tensile load. It is a key parameter in assessing performance of bindings used to secure loads, fasten equipment, or hold components in place. The term is primarily used in Norwegian technical contexts and may be translated as “binding stretch.”

In cargo securing, bindingsstrekking affects how tightly loads are held over time; in sporting and climbing gear, it influences safety and load consistency; in textile or garment manufacture, it relates to edge bindings and their stability during use. The concept is relevant wherever bindings must maintain tension under varying conditions.

Quantifying bindingsstrekking involves measuring elongation under controlled loads, often expressed as strain or percentage elongation relative to the original length. Tests distinguish static versus dynamic loading and may assess creep, temperature effects, and aging. International standards from ISO or EN families may govern tensile testing of binding materials, though the exact standard depends on material and application.

Common binding materials include polymers such as nylon, polyester, polypropylene, leather, and metal or synthetic straps. The amount of stretch depends on material properties, thickness, weave, knot type, and exposure to heat, moisture, or UV light. Over time, creep may cause gradual elongation even under constant load.

In design and operation, engineers seek an appropriate balance between sufficient strength and acceptable stretch, using safety factors to account for variability and wear. Regular inspection of bindings and replacement after signs of excessive elongation, fraying, or loss of integrity is advised.

See also: elasticity, tensile strength, creep, material testing, rigging, cargo securing.