How is the plasticity of wool?
Wool is often subjected to various external forces such as stretching, curling, and twisting during the processing to change the original shape of the fiber. Wool felt has good elasticity because of wool. It tries to return to its original form. Therefore, various kinds of stress are generated inside the fiber. This internal stress needs to be gradually attenuated and eliminated in a long time. It often processes wool products. Difficulties arise, which is one of the factors that make wool products unstable in size and shape during processing and use. The plasticity of wool refers to the fact that under the hot and humid conditions of wool, its internal stress can be quickly attenuated, and the existing form can be changed according to the external force, and then cooled or dried to maintain the shape.