Cotton wool refers to wool, which has the advantages of high water absorption, high warmth retention, high durability and high moisture absorption, but its disadvantages of pilling, pricking skin and shrinkage do exist. Therefore, shrinkage of cotton wool is a normal situation. During the cleaning process, pay attention not to wring it dry and machine wash it. Sheep wool is the main fabric of all major woolen sweaters. Many people will choose clothes containing a large amount of cotton wool in order to keep warm. What do you know about the advantages and disadvantages of these cotton wool? Advantages and disadvantages of sheep wool fabric The advantages of wool fabric are simply that it has good sag and enhanced gloss. In addition, it is not easy to fold. Pure wool has good air permeability, elastic stretch, more texture, and more natural and soft gloss. advantage 1. Wool is a natural fiber with good hygroscopicity. The research shows that its hygroscopicity is better than that of conventional synthetic fiber and natural fibers such as cotton and silk under any temperature and humidity conditions. 2. The cool feeling of wool. When the human body perspires, because the wool has high moisture absorption, it can maintain the humidity of the air around the skin in a low range, which is also one of the reasons why the wool fabric is comfortable and dry in summer. 3. Super absorbent: wool is a very good hydrophilic fiber, which is very comfortable to wear. 4. Warmth retention: because wool has natural curl, it can form many non flowing air zones as a barrier. 5. Durability: wool has very good tensile and elastic recovery, special scale structure and excellent bending, so it also has good appearance retention. shortcoming 1. Felting reaction: first, the unique and important characteristics of wool, which is caused by the scale on the surface of wool fiber. When the scale on the surface of wool meets the conditions of mechanical force (vibration, friction and pressure), heat and water, the wool sinks to its root. When the wool sinks, the edges of the wool scales hook each other and entangle so that it cannot be restored to the original length. Therefore, the shrinkage is serious. Under extreme conditions, wool can be reduced to half its original size (in garment making, it is normal to shrink by 80%). 2. It is easy to pillage and shrink, and some pure wool sweaters prick the skin. Does sheep hair shrink It shrinks. Pure wool fabric shrinks when exposed to water. The solution environment, temperature, fiber diameter, length and elasticity of wool fabric will affect the felting degree. High temperature will make shrinkage more serious. The way of weaving will also have an impact, and loose fabrics have more shrinkage space. The above is about the advantages and disadvantages of 100% sheep wool fabric and why sheep wool shrinks. I hope it can help you.