1. The physical and mechanical properties of the raw materials are not ideal, the fiber breaking strength is low, and the warp yarn cohesion is poor. During the weaving process, it cannot withstand the repeated friction of steel reeds and healds, resulting in fluffing or breakage of single warp fibers.
2. Warping and paralleling The process yarn guide is grooved or damaged, or the warp yarn is shaken or wrapped tightly during unwinding, which damages the fiber strength and elongation and deteriorates the mechanical properties. When the production and processing tension exceeds the yield value of its strength and elongation, resulting in The single fiber is broken and the warp is broken.
3. The loom reed and healds are grooved and damaged, and the warp threads cannot withstand repeated high-frequency friction. And the hair is broken off. The faster the loom speed is, the more serious the warp hair breakage will be.
4. The lint monitor of the warping machine fails, allowing the lint and long knots of the raw material itself to escape or block the warping machine. When workers break the warp joints, the knots are too large and too long. During weaving, the warp threads on the warp surface are tightly entangled, resulting in unclear openings and broken ends.
5. When the loom is running, the opening height of the warp has a great influence on the warp hair and warp breakage, because the weaving When the loom opens, the elongation of the warp threads is proportional to the opening height. If the opening height of the loom is large, the elongation of the warp threads will be large. Excessive elongation will cause fluffing and breakage of the warp threads.
6. When the loom is running, the friction stroke of the healds also has a great influence on the warp hair breakage. . When the heald frame is opened, the warp wires move toward the heald eye, and when the shed is closed, the warp wires move backward from the heald eye. The distance of this forward and backward movement is the friction stroke. The loom is continuously running, opening and closing in a continuous cycle, and the warp wires are constantly moving back and forth in the heddle eye and are subject to friction. It is also an important link in causing menstrual hair loss. In particular, the opening height is too large, the opening parts are worn, the movement of the heald frame is unstable, the healds move up and down, the loom speed is high, and the warp hair breaks are more serious.
“Six Measures” to Prevent Filament and Menstruation
1. Select raw materials according to different varieties and quality requirements. After the raw materials enter the factory, they are first sampled for physical and mechanical performance testing, and then sprayed in the weft direction on the loom to make samples for the weavability and color absorption of the raw materials, which lays the foundation for the raw materials to be put into production and the rational formulation of finishing, slurry, and process parameters.
2. Wire guide components for aligning, slurrying, and combining processes, wool monitors, static eliminators, and debonding Self-stop devices and other devices must be inspected regularly and any problems found should be dealt with in a timely manner. After starting the machine, check again to see if there is any lint on the warp beam. If there is lint, pick it out in time and notify the previous process to analyze the cause.
3. Strengthen the quality acceptance of reeds and healds, and do a good job in regular inspection, cleaning, maintenance and other management work .
4. Regularly inspect and repair the heald frame opening device of the loom to prevent wear of the opening parts and uneven movement of the heald frame. Stable, the healds are swaying.
5. In water-jet weaving, when smooth weft insertion can be ensured, the opening height should be as small as possible.
6. Strengthen quality awareness among lathes in each process. To improve the operating skills, the wire path must be clarified when joining warp wire breakage. When joining, the knots should be small and short, and the knots should not come off.
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