Specialty yarns including high twist, low twist, untwisted, high tenacity,涡流纺, reverse twist, and bamboo yarn. Offering fine cotton (BCI), organic cotton (GOTS, OCS), recycled cotton, polyester (GRS), African cotton, Pima cotton yarns, and certificates. Hard-to-find yarns, we have in stock.

Henan QiangNian (Wei Xian He Sheng) Product Hotline: 13903781186, Mr. Liu

The shrinkage rate, which measures the degree of fabric shrinkage, is the result of the fabric's free contraction in water when washed in a drum washing machine, in a completely relaxed state. Not only does the pre-dyed and finished fabric and garments shrink during relaxed washing, but the knitted greige fabric, when fully relaxed and soaked in water, also exhibits dimensional shrinkage, known as shrinkage. The shrinkage process of knitted fabrics during water washing or relaxation in water is a result of the combined shrinkage of fibers, yarns, and fabric structure.

Fiber Shrinkage

In spinning, fiber stretching (chemical fibers), weaving, and processes with high tensile forces in dyeing, fibers elongate due to external stretching and form internal stresses within the fibers. The drying action under tension and the cohesive forces between fibers, as well as the interlacing resistance between yarns, temporarily fix this elongation and internal stress. When treated with water or steam, water molecules weaken the interactions between the macromolecular segments of the fibers, lowering the barrier for their retraction. Under the influence of internal stresses, the fibers will shrink. Long fiber fabrics, yarns with low twist, and regenerated cellulose fiber fabrics are prone to elongation due to external stretching during wet processing (such as scouring and dyeing), resulting in significant shrinkage. Cotton knitted fabrics, if processed with a loose method during scouring and dyeing, will not be stretched, leading to minimal shrinkage due to fiber properties. However, if a high-tension stretching method is used, it will cause significant fiber shrinkage. It is crucial to note that fiber deformation caused by external stretching is difficult to recover due to the cohesive forces between fibers and the interlacing resistance between yarns (loop knots). Therefore, attention must be paid to controlling the external stretching forces during the scouring and dyeing processes of cotton knitted fabrics.

A variety of "specialized, refined, unique, and new" yarns including strong twisted yarn, low twisted yarn, untwisted yarn, high tenacity yarn,涡流纺yarn, reverse twisted yarn, and bamboo yarn. Offering high-quality cotton (BCI), organic cotton (GOTS, OCS), recycled cotton, polyester (GRS), African cotton, and Pima cotton yarns along with certifications. Hard-to-find yarns, we have in stock.

Henan QiangNian (Weizhou Hesheng) Product Hotline: 13903781186, Mr. Liu