Appearance: In the hair of the knitted fabric, laterally continuous terry loops are woven from coarser or finer yarns of a larger specification. Most of them are single roots, but even there are parallels or multiple roots. According to the dense, thick and normal are different.
Cause: When weaving knitted fabrics, operators mistakenly use non-specified counts or yarns of Danny size to weave. Misuse of the finer yarns makes the fabric appear thinner. Misuse of thicker yarns results in thicker fabrics.
(2) Wrong End
Appearance: The warp yarns of woven fabrics have a single or side-by-side thickness that is not specified. If it is a fine yarn, it is called Fine End. If it is a thicker yarn, it is called Coarse End.
Contributing factors: The number of bobbin yarns involved in the warping of the menstruation was wrong and the warp yarns were not specified. This kind of embarrassment is often a full-blown person.
(3) Wrong Pick
Appearance: The weft of the woven fabric has one or more non-specified specifications. For finer yarns, FinePick is called. If it is a thicker yarn, it is called Coarse Pick.
Causes: When weaving, the weft yarns of the weft tube, or the number of bobbin yarns fed by the shuttleless weaving machine are incorrect, and weft yarns other than the specified ones are used. After the operator discovered it, it was removed and stopped. However, weaving machines that change tubes automatically are often not easy to find.
(4) Wrong Weaving
Appearance: The weave method is wrong, and the texture of the cloth is different from the original designer. For example, the left twill is woven into a right twill.
Causes: Mostly caused by wearing errors. Others, such as jacquard fabric board error, multi-standard warp fabric warp yarn arrangement error.
(5) Wrong Draw
Appearance: Two warp yarns that are adjacent to each other are woven together into one fabric. Regardless, the root (actually two) yarns appear particularly thick. Such crickets are all full-peppers. If they are found in the primary weaving of the warp beam, removing one of the roots in the tandem can be completely avoided.
Contributing Factors: 1) When neglecting the warp draft, it is negligence to treat two strands as one. 2) After the sizing, the yarn is not clear, the two stick together and form the same root. 3). Two threads penetrate the same heddle at the time of threading.
(6) Mispick
Appearance: Two wefts are woven into the same weaving mouth and even have three or more roots. The length of the parallel weft ranges from the full width of the fabric to more than 10 centimeters near the edge of the cloth.
Causes: 1). The length of the fabric is full and weft. After troubleshooting due to shutdown, we did not check the weaving drive. Or the weft pin failed and the weft break did not stop. 2). Non-full length latitude and longitude, due to the length of the insurance yarn is not enough, the side cut set improperly or not sharp enough, and after the broken weft did not clear the yarn tail.
(7) Set Mark, Fine
Appearance: The density of the weft yarn arrangement on the fabric is less than that specified. The weft yarns weave into the length of the fabric are gradually thinned from the normal density, and gradually returned to the original density from the thinnest, forming a thin cloth with a constant width.
Causes: 1). The needle of the weft is broken. When there is no weft yarn, it will continue to idle. 2). Warp tension is not properly controlled during weaving. 3). The warp tension adjustment is too tight before stopping and driving.
(8) Set Mark, Coarse
Appearance: The density of the weft yarns arranged on the fabric is denser than the regulations. The weft yarn weaves along the length of the fabric gradually densifies from the normal density, and then gradually returns to the original density from the closest density, forming a narrow cloth with a narrow width. Causes: 1) The warp tension is not properly controlled during weaving. 2). Warp tension adjustment is too loose when stopping and driving.
(9) Pick-Out Mark
Appearance: The weft of the weft cloth is not well dismantled. After weaving continues, there are still marks on the cloth surface.
Causes: In the weaving of fabrics, the operator found that wefts were weaving at different places, or weaving severe roads and loosing, and immediately shutting down and weaving the weft yarns weaved. When the warp yarn is removed, the warp yarn is rubbed off by the weft yarn, resulting in a large amount of hairiness. Therefore, after reweaving, the warp yarn exhibits a multi-hairiness cloth surface with the same width and width as the original one.
(10) Broken End
Appearance: The warp of the fabric breaks one or more roots, resulting in a large distance between the two adjacent yarns. In plain weave fabric, it becomes two broken yarns juxtaposed, as if by. In twill weaves, there is a phenomenon of discontinuity.
Causes: The warp yarn is interrupted by weaving and the stopping device fails. Weaving continues without weaving the warp yarn.
(11) Broken Pick
Appearance: The weft yarn in the fabric breaks, but the distance between the ends of the break is very short, that is, the length of the break is small. This type of defect is generally not significant.
Causes: 1) The weft yarn breaks in the weaving but it continues to weave in a moment, only a short distance away. 2). There are serious rough knots and flying flowers on the weft yarn, which causes the weft to break when it is removed.
(12) One hundred feet (lacking)
Appearance: This kind of flaw only occurs in the twill weave, in the warp of the same part of each organization, at the same time floating on the cloth, like a set of many feet.
Causes: When a twill weaves less weft yarn, the interweaving point decreases, and part of the warp yarn floats on the weft yarn twice. (13) End Snarl
Appearance: One of the warp yarns in the fabric has a small amount of curling and twisting and weaving into the cloth. Fabrics made from strong twisted yarns are more likely to occur.
Cause: One of the root warp yarns is loose during warping, causing a period of curling.
(14) Filling Snarl
Appearance: Fabric weft yarns have a small amount of curling and weaving into the fabric. Fabrics made from strong twisted yarns are more likely to occur.
Causes: 1) In the weft bobbin or in the bobbin yarn used for the weft yarn, the small yarn has been curled and twisted. 2). The weft bobbin is improperly formed and it is not smooth when the yarn is unreeled. 3). The tension of the weft yarn is too small, and the mouth of the weaving is not clear.
(15) Reed Mark
Appearance: Between the two warp yarns, there is a large gap between the two warp yarns, and weaving weft yarns can be seen.
Causes: 1) The deformation of the steel rakes has failed to control the warp yarns in position, or the dents have loosened. 2). There are one or a few gaps in the warp yarn and the tension applied during weaving is too large.
(16) Temple Mark
Appearance: Approximately 2 to 5 cm wide acupuncture or traces of acupuncture in the cloth. In severe cases, the weft yarns of the part are wavy and curved.
Cause: The thickness of the needle used in the temple supporter is not appropriate, and the stall supporter stuck in the ring cannot be rotated, or the rotation is not smooth enough.
(17) Rolling
Appearance: In the position near the edge of the cloth, there are many broken strands in succession. Although they are properly attached, there are still many yarn tails on the surface of the fabric after continuous weaving.
Cause: The shuttle is clamped in the mooring passage, which cuts off many warp yarns. More often than not, the structure of the shuttle is poor and the movements of the pick and the opening are hindered. The shuttleless loom that is used now can avoid such defects.
(18) Reedness
Appearance: The two warp yarns that are judged are squeezed together, and the gap between the left two and the right two is increased, forming a checkerboard-like small square lattice with the weft yarn.
Causes: 1) The angle at which weaving is opened when weaving is too large. 2). The warp tension between upper and lower layers is too different. 3). The density of the dental caries is not uniform.
Man'S Cargo Shorts,Khaki Cargo Shorts,Men Letter Printing Cargo Shorts,Men Casual Work Shorts
Shaoxing Tongbang Textile Co.,Ltd. , https://www.sxtongbang.com