Fiber Structure
Alpaca fiber is similar in structure to sheep wool fiber. Its softness comes from the small diameter of the fiber, similar to merino wool. Its glossiness is due to low height of the individual fiber scales compared to sheep wool. Alpaca fibers have a higher tensile strength than wool fibers. In processing, slivers lack fiber cohesion and single alpaca rovings lack strength. Blend these together and the durability is increased several times over. More twisting is necessary, especially in Suri, and this can reduce a yarn's softness.
The alpaca has a very fine and light fleece. It does not retain water, is thermal even when wet and can resist solar radiation effectively. These characteristics guarantee the animals a permanent and appropriate coat to protect against extreme changes of temperature. This fiber offers the same protection to humans.
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