Textile Tips: Causes and Harms of Slashing
There are many kinds of sizing defects, and different fibers produce different slash defects. The following are just some of the major flaws that have common features.
(1) uneven sizing . Due to the viscosity of the slurry, temperature, squeezing force, sizing speed fluctuations and slurry bubbles and other reasons, the sizing rate is large and small, and serious formation of heavy pulp and light pulp defects. The heavy pulp weakens the elasticity of the warp yarns, causing the warp yarns on the loom to break off brittlely, the bark surface of the cloth being wrinkled, and the falling pulp increases. Light fluffing causes the warp yarns on the loom to stick to each other and break their heads, causing production to fail.
(2) uneven regain. Drying temperature and sizing speed are the main reasons for uneven regain. The sizing regain rate is too large, the slashing wear resistance is poor, the sizing film is sticky, and the yarns are easily stuck together, making the loom opening unclear, and easily producing hops, bead nets, etc., and also causing the breakage to increase. And the yarn is easy to mold; when the moisture regain is too small, the film becomes brittle, and the sizing yarn easily breaks and the film is easily scraped off, causing the yarn to fluff and break the head.
(3) uneven tension. There are many causes of uneven tension. For example, the entire warp beam unwinds and the tension is uneven. The yarn guide rollers of the whole machine are not parallel or horizontal, and the midpoint of the winding axis of the machine is not located on the center line of the machine table, causing the yarn to be skewed. Uneven tension will have an adverse effect on the clarity of the looms and the operation of the stopping mechanism. Reflected in the quality of the finished fabric, the tension is too small to form a point of shrinkage, and the tension is too large to produce a hanging point.
(4) Plaque . Slurry and pulp pieces in the slurry adhere to the yarn to form a dispersive massive pulp spot after being pressed. In addition, after a long period of parking, the slasher shaft is in contact with the slurry surface and the bonded pulp skin will adhere to the yarn skein to form a periodic sliver stain. If the slurry temperature is too high, the boiling slurry splashes on the squeegee after the grouting. On the loom, the yarns stick to each other at the spot and break off when they pass through the stop-and-strip. Pulp spots appear on cloth, affecting the cleanliness, appearance, and flatness of the fabric.
(5) Down, head and head. Poor warping, such as the warp beam breakage head, stranding head, etc., after the sizing yarn is wound, winding the yarn guide component will cause the spool shaft break point defect, and the whole warp axis wave yarn will increase the difficulty of the yarn split twisting, thus causing The yarn is broken and the head breaks to form the first point. Improper operation of the thread, so that the yarn is not separated, is also the main reason for the parallelism. The improper handling of the yarn during the winding of the yarn in the retractable reel and the improper handling of the reversal, the improper handling of the cut-off yarn and the incorrect operation of the yarn can cause twisting. The impact of weaving, twisting, and twisting on the weaving is great, and it is difficult for the weaving work. On the loom, weaving weaves such as suspending warp, shrinking, breaking warp, and bad weaving are added.
(6) Loose or stacked edges. Due to misalignment of the tilting and retracting position of the pulp axis disc, the warp yarn on one side is excessively overlapped, and the other side is too small and loose, so that one side is hard and one side is soft, and the side is soft and hard, and the side yarns are mutually embedded during the weaving. And if the warp tension is too large or too small, it will cause bad edges.
(7) Incorrect ink length, flow, and missing print. This is a flaw caused by improper operation or improper adjustment of the length-measurement printing device, which may affect the looms on the looms and cause garbled lengths.
(8) Oil pollution. The yarn bearing roller bearing lubricates the oil after it is melted on the yarn sheet, the grease in the slurry is poorly emulsified, and the cleaning work is improper. Severe oil stains can cause fabrics to fall.
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