Abstract: Wavy yarn is a new-type fancy yarn with a more abundant structure based on the conventional yarn structure of slub yarn. The production equipment of wavy yarn solves the length-limited problem of slub yarn due to the fiber length factor, can meet the demand of the subsequent weaving process, and is of great significance to diversify the garment varieties. The paper introduces the structural characteristics of the wavy yarn, the setting of the spinning process, the difficult problems in the spinning process and related solutions, and provide a reference for the fancy wavy yarn enterprises.

Key words: fancy yarn; wavy yarn; production equipment