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The yarn of slub denim denim has certain particularity compared with the yarn of general fabric, so the request for the original yarn is also different. Important disclosures are:

1. Warp yarn has lower breaking strength and elongation

Warp yarn has a long process flow and is often subject to frequent bending and elongation. The tension on the machine is large when weaving. Therefore, the breaking strength and elongation of warp yarn are relatively low.

2. The maturity, levelness and permeability of raw cotton are poor

Indigo dyes have poor dyeability and color fastness to abrasion and rubbing. It is difficult for cotton yarn spun with cotton with high maturity to form uneven dyeing, resulting in defects such as colored flowers and white stars. Therefore, the content of dead petals, dead cotton and neps should be screened outside the cotton yarn as much as possible.

3. Long yarn hairiness

The hairiness of the yarn directly affects the quality of the next product. The hairiness of sizing and warping process is difficult to separate the yarn, and the breakage increases. At the same time, it will also cause the turbidity and thickening of the dye solution, and even the blockage of the pipeline.

4. Long yarn defects such as wet sliver and slub

As for ordinary slub denim, yarn defects such as wet yarn and slub yarn are long, otherwise it will affect the surface and color of the cloth and increase the consumption breakage rate.

5. Large winding capacity

However, the denim yarn count is low, and the capacity of single drum yarn winding should only be increased to screen the fabric knots, which is more significant when weaving on shuttleless looms.

6. The yarn fineness is accurate, the weight is partial, and the weight unevenness is small

It is still necessary to ensure that the fineness, weight deviation and weight unevenness of denim yarn are in a fair field, otherwise it will directly affect the control of the weight standard per square meter.

The article originated from denim millhttp://www.021-xi.cn