In the second half of this year, the textile fabric business is good, in order to ensure the quality

Double-layer fabric is generally produced by double-axis loom, while single-axis loom can only produce double-layer fabric with small difference in floating length. The double layer fabric is divided into the outer layer and the inner layer, and the two layers are generally connected by the connecting warp. According to the structure characteristics of the inner layer and the bonding method, the floating length of the outer and inner warp is different from that of the bonding warp. When the difference of floating length lines is small, the tension tends to be the same, which can be produced by single-spindle loom. When the difference of floating long lines is large, the tension difference is large, suitable for the use of double-axis loom production.

According to the characteristics of double-layer fabric, the interweaving points and buckling of the surface warp are more than those of the inner warp, and the tension is larger. The interweaving points of the junction warp are the least, and the tension is the least. In the weaving process, the characteristics of warp distribution before and after are: the warp with more interweaving points and large tension is distributed on the first few pages of the heald frame, and the warp with fewer interweaving points and small tension is distributed on the latter few pages of the heald frame. Therefore, the table warp is mostly on the first few pages of the heald frame, the inner warp is mostly on the next few pages of the heald frame, and the knot is on the last few pages of the heald frame. This threading method causes the binding warp to become more and more loose in production, and the warp stop sheet will sink after weaving for a certain period of time, eventually leading to unclear loom opening, and even stopping and unable to drive. Due to the certainty of the internal and external structure, the release ratio of the elastic warp is certain, and will not relax indefinitely with the progress of weaving.

Through the analysis, we can see that the root cause of the inability to drive is the relaxation of the junction warp, which makes the stop sheet drop and leads to the stop; Weaving can proceed smoothly by removing the warp stops on the jointing warp. However, there are also hidden dangers in removing the stopping piece on the junction warp, that is, it is not easy to find the fracture of the junction warp in time. The main causes of warp breakage include excessive warp tension being pulled off, warp being hung up by the burrs of healds and warp stops, poor sizing resulting in pulp spot sticking and broken warp, and poor joints during warping and sizing. Among them, the main reason is that the warp tension is too large and the warp is broken. Therefore, in the case of connecting the warp without wearing the warp stopper, it is generally possible to achieve smooth weaving.

In order to prevent the phenomenon of breaking the knot warp, it is necessary to strengthen the work of the road guard to inspect the cloth on tour. In warping, sizing can be through the strand, butt knot dyeing, so that the stopper is easier to find the broken warp; At the same time, it can be considered to change the number of reed penetration and improve the relaxation of the binding warp. In short, the probability of fracture of the bonding warp is not high, especially in the production of thick, strand, high-strength warp and other double-layer fabrics, it can be safely used for production, so as to avoid stopping caused by slack bonding warp.