In the process of forming knitted fabrics on knitting machines, yarns are subject to complex mechanical effects, such as tension, bending, torsion and friction. In order to ensure normal production and product quality, knitting yarns should meet the following requirements:
- Yarn should have certain strength and elongation.
The strength of yarn is an important quality index of knitting yarn. Because the yarn undergoes certain tension and repeated loading during preparation and weaving, as well as bending and torsional deformation during weaving, the knitting yarn must have certain strength and elongation in order to bend into a circle and reduce yarn breakage during weaving.
- The yarn should have good softness.
Soft yarns are easy to bend and twist, and make the loops in knitted fabrics uniform in structure, clear and beautiful in appearance. At the same time, it can reduce yarn breakage and damage to looping parts in the process of weaving.