Why does cashmere pill? Cashmere sweater has been widely favored by consumers at home and abroad because of its “light, soft, cool, waxy” characteristics. In the process of wearing cashmere sweaters, many consumers find that cashmere sweaters pilling, so they have doubts about the quality of cashmere sweaters. Now I would like to introduce this issue to consumers. (Related to see: how to prevent sweaters from pilling? )
Main Factors Affecting Fabric Pilling
Fiber length: the pilling degree of the fabric made of longer fiber is lighter than that of the fabric made of shorter fiber; due to the small number of fiber ends per unit length, the fiber ends exposed to the surface of the yarn and fabric are also less; in addition, the cohesion between the long fibers is larger, and it is not easy to slide out to the surface of the yarn and fabric.
Fineness of fiber: coarse fiber is more difficult to pilling than fine fiber. In addition, the coarser the fiber is, the harder the fiber is, and the fibers erected on the surface of the fabric are not easy to entangle into balls.
Crimp degree of fiber: the crimp of fiber is more, the cohesion between fibers is greater, the friction is increased, the fiber is not easy to dissociate to the surface of the fabric, so it is not easy to pilling.
Cross section shape of fiber: the cross section shape of fiber is close to round, and the cohesion between fibers is small, so it is easier to pilling than the irregular fiber whose cross section shape is close to triangle, polygon, etc.
Fiber strength, elongation and elasticity: the fiber with high strength, elongation and elasticity is not easy to break and fall off during friction, and it is easy to tangle into a ball once it is pilled.
Yarn twist: the yarn twist is large, the binding between fibers is tight, and the pilling degree of fabric is reduced.
Fabric structure: knitted fabric is easier to pilling than woven fabric.
In addition, the way of fabric finishing and washing also has an effect on the pilling degree.
Why Does Cashmere Pill?
Why does cashmere pill? It is determined by the characteristics of cashmere sweater fiber.
Why does cashmere pill? From the perspective of raw materials, the fineness of cashmere is 14.5-15.9um, the length is 30-40mm, and the curl is 3-4 pieces / cm, which indicates that cashmere is a fine and short fiber with smaller curl than fine wool; the cross section of cashmere fiber is close to round; cashmere is also a fiber with strong single fiber strength, excellent elongation and elasticity.
Why does cashmere pill? From the analysis of the twist of the cashmere yarn, in order to make the cashmere sweater a good feel, the twist should not be too large during spinning, so the bond between the fibers is not very tight.
Why does cashmere pill? From the analysis of the structure of cashmere sweater, cashmere sweater belongs to knitted fabric. In order to give full play to the soft, smooth and waxy characteristics of cashmere, a key process, namely the cashmere shrinking process, must be carried out in the finishing process. One of the purposes of this process is to shrink some fibers out of cashmere and cover the surface of cashmere sweater tissue to make it feel soft. In this way, it is easy to make the cashmere on the surface of cashmere sweater intertwine into a ball.
To sum up, it is not difficult to draw a conclusion that a small amount of pilling of cashmere sweater is a normal phenomenon, and the causes are closely related to the properties of raw materials, yarn twist and fabric structure.