What are the classifications of fancy yarns？

The different processing methods of fancy yarns can be roughly divided into the following categories: one is the fancy thread processed by the ordinary spinning system, such as chain thread, gold and silver thread, and silk thread, etc.; the other is the fancy yarn processed by dyeing method. Threads such as mixed color thread, printed thread, rainbow thread, etc.; the third is the fancy thread processed by fancy twisting machine, which can be divided into overfeeding type such as spiral according to the difference and change of the feeding speed of the core thread and the decorative thread Thread, braid thread, loop thread and control type such as belly thread, knot thread, etc.; the fourth is special fancy thread such as chenille thread, cored thread, drawing thread, flocking thread, etc. 　There are many varieties of fancy appearances for decoration, and there are also many production methods. The structure of fancy yarn is composed of core yarn, decorative yarn and fixed yarn. The core yarn bears strong force and is the main yarn; the decorative yarn is wrapped around the core yarn with twist to form an effect; the fixed yarn is wrapped around the outer periphery of the decorative yarn with the opposite twist direction to fix the pattern, but there are also cases where the fixed yarn is not used. To
The names and composition characteristics of several common fancy yarns (threads) are introduced below:
1. Knotted yarn The decorative yarn is twisted several times in the same place.
2. Spiral yarn is made by merging and twisting two yarns with different fineness, twist and type.
3. Thick yarns: Soft and thick fiber clumps are attached to the core yarn and wrapped with solid yarn.
4. Loop thread The decorative thread forms a closed loop shape, wrapped with solid yarn.
5. Knotted thread The decorative yarn is wound on the core wire in a spiral manner, but the loop is thrown out at intervals.
6. Chenille thread clamps the horizontal decorative yarn in the core thread. The end of the decorative yarn is loose and plush.
7. Diamond-shaped metal wire The metal core wire (made of aluminum foil or sprayed metal material covered with a transparent protective film) is wound in another color, thin decorative wire and fixed wire, with a diamond-shaped pattern effect.