Defects will inevitably occur in the weaving of the gre […]
Defects will inevitably occur in the weaving of the grey silk on the water jet loom, which will affect the quality of the grey silk and reduce the quality of the grey silk. The main defects are: warp road (commonly known as 'reed road'), loose edges of high-density thin fabrics, weft bars, damage, oil stains, etc.
In the actual operation, it was found that the downgrading of the grey silk caused by the meridian accounted for the largest proportion, and the statistical report showed that it accounted for about 50% of the total downgrading. It is very helpful to improve product quality and expand the market share of the product.
The reason for the formation of the meridian:
The shape of the warp path: one or more shadow strips that are regularly or irregularly whitened, brightened or darkened on the silk surface along the direction of the warp. The reasons for its formation are varied and different. In practice, the reason is usually mistaken for the quality problem of the reed, which is very one-sided. The following is an analysis of the production process of grey silk:
1. Warping process
This process adopts split-axis warping, and tension is the most important in the management of split-axis warping process. Uneven tension is the cause of wire breakage and warp defects, mainly manifested in the following aspects: the size of the warp wire drum; the problem of mixed batches of raw materials; the problem of static electricity of raw materials; the problem of the guide wire hole of the creel; The problem of solving the problem; the connection problem of the retractable reed in front of the reel.
2. Sizing process
Because there are many parameters controlled in this process. Therefore, there are many factors that lead to the change of the inherent quality of the fiber. For this reason, the fluctuation range of each parameter must be well controlled in order to improve the quality of the pulp. Control of drying elongation; speed problem of sizing machine; surface problem of sizing roll; tension problem in decomposing, drying, and coiling;
3. Shafting process and piercing reed
In the spooling process, the threads on several spools must be simultaneously wound onto the woven spool according to the total number of warp threads in the fabric design. For this reason, attention should be paid to the tension of the decoupling of several spools participating in the spooling. question. The problem of twisting or threading of intricate reeds caused by grasping the wire by hand in the absence of a splitter.