What causes pilling in cashmere sweaters?

Cashmere sweaters can be seen everywhere and are loved by people. Some people love its heat-retaining properties, while others love its aesthetics and remodeling properties. There are countless reasons why they love it. However, the one downside that worries many people is that it pills easily. In fact, the pilling of cashmere sweaters is not only related to the characteristics of cashmere fibers and fabric structure, but also related to consumers\' wearing habits.
1. Fiber Yarn:
The fineness, length and curl of cashmere fiber are important characteristics of the process. Compared to wool, cashmere firstly has less fineness, a shorter length and fewer curls. This way the cohesive force of the fiber in the yarn is weak and there is a lot of hair exposed. In addition, the fabric fibers are slippery and slippery.damaged under the action of external force, causing lint and pilling. Secondly, the shrinkage coefficient and friction coefficient of its fiber are both low.l, and the friction resistance between fibers is reduced. However, due to the scale structure of cashmere fiber, cashmere slides easily from pure cashmere or wool blend fabric. When the fiber aggregate is subjected to a non-directional external force, the fibers that are pushed against the scales tend to move toward the roots, causing lint loss. Due to the spinal blockages between the scales and the elasticity of the fibrous body, the fibers are intertwined and pilled. , also caused the shrinkage caused by animal fibers.
Cashmere fiber has poor electrical conductivity. When clothes are worn, the fibers rub against each other, causing buildup.ion of charges in the fibers, resulting in static electricity. Fibers with a high dielectric coefficient are positively charged, and conversely, fibers with a high dielectric coefficient are negatively charged. For example, when chemical fibers rub against cashmere, the chemical fibers are negatively charged and the cashmere fibers are positively charged. Fibers with different charges are attracted to each other, which can easily cause the fabric to pill and pill. This phenomenon is particularly serious when the weather is dry.
The more crimped the fiber, the less likely it is to stretch when twisted. During the friction process, the fiber will loosen and slide easily, forming hairs on the surface of the yarn. For this reason, the more curled the fiber, the easier it is to pill. The finer the fiber, the more fiber heads are exposed to the surface of the yarn and the softer the fiber is.This. Therefore, thin fibers are easier to tangle and pill than thick fibers. In terms of fiber length, shorter fibers are easier to pill than long fibers. Because there are more loose fibers and the friction and cohesion between the short fibers are lower, the fibers slide easily to the surface of the fabric, which is easy to produce. Pilling phenomenon.
The twist and surface finish of the yarn also have a significant influence on pilling. High twist yarns have tight cohesion between fibers. When the yarn is rubbed, the fibers slip relatively less from the yarn, resulting in pilling. The balling phenomenon is reduced; Since cashmere sweaters are soft fabrics, excessive twisting will make the fabric harsh, so the twist cannot be increased to avoid pilling. The influence of the softness of the yarn, the smoother the yarn, the greater the surface is short and less hairy, so the smooth yarn is less likely to pill.
2. Fabric Structure:
A loosely structured fabric is more prone to pilling than a tight structured fabric. When a tightly structured fabric rubs against external objects, it is less likely to produce existing lint and lint. , and because the friction resistance between the fibers is large, it is not easy to slide to the surface of the fabric, which can reduce the phenomenon of pilling. High-gauge fabrics are generally tighter, so low-gauge fabrics are easier to fluff than high-gauge fabrics.ics.Pilling. Fabrics with flat surfaces are less prone to pilling, while fabrics with uneven surfaces are prone to pilling.
3. Influence of the dyeing and finishing process:
Once the yarn or fabric is dyed and finished, its anti-pilling properties will have an immore important pact, which is related to dyes, auxiliaries, conditions of the dyeing and finishing process, and yarns dyed with skeins. are more likely to pill than yarns dyed with loose wool or tops; garment-dyed fabrics are more likely to pill than yarn-dyed fabrics; the fabrics are shaped, particularly after finishing in resin. Its resistance to pilling will be greatly reinforced.
4. Influence of wearing conditions:
The phenomenon of pilling must start with the mechanism of textile pilling. When wearing a cashmere sweater, due to the friction exerted by the outer covering (such as a coat), one end of the shorter fibers of the yarn slips and becomes entangled with each other on the surface of the fabric .to form a ball. Cashmere fiber is finer and shorter than wool fiber. In addition, general cashmere sweaters are prcarded products. The short fiber content of cashmere yarn is higher, making them easier to “break” and tangle.
Therefore, when a cashmere sweater is worn inside, the lining of the matching coat should be smooth, not too rough or too hard, and the inside pocket should not be filled with hard objects or of pens, to avoid local friction and pilling. ; when worn outdoors, the sleeves and Do not rub the table top, sofa sleeves and armrests, backrest and sofa, etc. for a long period. The wearing time should not be too long. Pay attention to intermittent and alternate wearing to restore elasticity and avoid damage due to fiber fatigue.
After pilling a cashmere sweater, do not pull it with your hands. The correct method is to use scissors to gently cut the pom poms after washing. After several washes, with somens Loose fibers fall off and pillingThe cashmere sweater will gradually disappear.

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