Now, with the improvement of living standards, people's requirements for clothing fabrics are getting higher and higher. People are no longer satisfied with ordinary style fabrics, but emphasize individuality. There are many chemical fiber fabrics such as slub silk on the market now, and these chemical fiber fabrics have various styles.

However, some consumers prefer linen and wool like fabrics and effects. Today, there is already a slub yarn on the market, which not only has the characteristics of orderly and evenly distributed appearance, but also has differences in linear density and "pine knot" style, and slub yarn also has differential dyeing, good The advantages of air permeability, strong unevenness and so on. Therefore, slub silk has broad market application prospects.

When slub silk is used to produce fabrics, for its design, control and reproduction of characteristic parameters, the concrete factory will increase the aesthetics through the thickness ratio of slub silk, the distribution law of thick details and its change cycle. At present, in the slub yarn produced according to the existing production method, it is not possible to control the position where thickness and detail are produced. The distribution law of thickness and detail cannot be controlled, or the frequency and period of thick knots are not produced. But it can be done with professional production equipment.

Spinning device for forming slub filaments in composite yarn processes. The heating roller in the device comprises a cylindrical body, a heating device arranged on the body and a thermally conductive material made of a contact layer covering the outside of the body, and the contact layer is used to contact the textile thread with the body. In this way, the heated area and the non-heated area are formed on the contact layer, so that the filaments are drawn unevenly by the subsequent drawing, and slub filaments are formed.

Through the experience of using this equipment, it can be seen that the positions of the heating area and the non-heating area on the heating roller are relatively fixed, and the distance between the heating area and the non-heating area cannot be adjusted, so the details of the slub yarn cannot be adjusted. . At the same time, the temperature of each heating zone is the same, and differential heating of each heating zone cannot be achieved. Therefore, at present, the equipment for manufacturing slub yarns is developing towards facilitating adjustment of the distance between heating zones and facilitating the temperature of each heating zone.