{"id":9390,"date":"2025-01-15T10:30:31","date_gmt":"2025-01-15T02:30:31","guid":{"rendered":"https:\/\/www.textile-fabric.com\/archives\/9390"},"modified":"2025-01-15T10:30:31","modified_gmt":"2025-01-15T02:30:31","slug":"causes-of-weaving-defects-in-woven-fabrics","status":"publish","type":"post","link":"https:\/\/www.textile-fabric.com\/?p=9390","title":{"rendered":"Causes of weaving defects in woven fabrics"},"content":{"rendered":"

(1) Wrong Yarn)<\/strong><\/span><\/p>\n


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Appearance: In the wool of knitted fabrics, horizontally continuous loops are used in larger specifications The yarn is woven from thick or thin yarn, usually with a single yarn, but occasionally there are multiple yarns arranged side by side or spaced apart, depending on the density and thickness. <\/p>\n


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Cause: When weaving knitted fabrics, the operator mistakenly used yarn with non-specified count or denier specifications. If you misuse finer yarn, the fabric will appear thin. If you misuse thicker yarn, the fabric will appear dense and thick. <\/p>\n


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\u3000(2) Wrong End<\/strong><\/span><\/p>\n


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Appearance: The warp yarn of the woven fabric has a single one or several parallel yarns with non-specified thickness. If it is a thinner yarn, it is called fine end. If it is a thicker yarn, it is called fine end. Coarse End. <\/p>\n


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Cause: The number of yarns used to draw the warp during warping is wrong, and an incorrect number is used. Warp yarns of specified specifications. Such defects are often full-length <\/p>\n


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\u3000 (3) Wrong Pick<\/strong><\/span><\/p>\n


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Appearance: The weft of woven fabrics has one or more continuous strands of non-specified thickness. If it is a thinner yarn, it is called a fine pick. If it is a thicker yarn, it is called a fine pick. Coarse Pick. <\/p>\n


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Cause: During weaving, the weft yarn in the weft tube or the package yarn fed into the shuttleless loom has the wrong count, and weft yarn of non-specified specifications is used. After the operator finds out, he usually stops the machine and removes it. But the automatic Looms with replaced tubes are often difficult to spot. <\/p>\n


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\u3000 (4) Wrong Weaving<\/strong><\/span><\/p>\n


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Appearance: The weaving method is wrong, and the texture of the cloth is different from the original designer. For example, the left twill is woven into the right twill etc. <\/p>\n


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Cause: Generally caused by errors in drawing-in. Others include errors in the pattern of jacquard fabrics, errors in the arrangement of warp yarns in multi-standard warp fabrics, etc.<\/p>\n


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\u3000(5) Wrong Draw<\/strong><\/span><\/p>\n


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Appearance: Two adjacent warp yarns are brought together and woven into the cloth as one according to the fabric structure. Judging from this, the yarn (actually two yarns) appears to be extremely thick. This kind of defect is a complete one. If it is found during the initial weaving of the warp beam, it can be completely avoided by removing one of the parallel yarns. <\/p>\n


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Causes: 1). When warping and pulling yarns, two yarns were neglected to be treated as one. 2). After sizing, the yarns were not clearly separated, and the two yarns were stuck together, forming a shape The same root. 3). When threading the heddle, thread the two healds into the same heddle. <\/p>\n


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\u3000(6)Mispick<\/span><\/strong><\/p>\n


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Appearance: Two weft yarns are woven into the same fabric felling, and occasionally there are three or more weft yarns. The length of the weft yarns varies from the full width of the fabric to the one about 10 cm near the two edges of the fabric. More. <\/p>\n


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Cause: 1). The long and parallel weft of the fabric was due to the failure to check the weaving edge after shutting down the machine to troubleshoot. . Or the weft probe fails and the weft breakage does not stop automatically. 2) The weft is not of full width length because the length of the safety yarn is not enough, the edge shear is improperly set or not sharp enough, and the yarn tail is not removed after weft breakage. <\/p>\n


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\u3000(7)Pick-Out Mark<\/strong><\/span><\/p>\n


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Appearance: The weft yarn of the gray cloth is not removed properly, and after weaving continues, there are still traces on the cloth surface. <\/p>\n


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Cause: During fabric weaving, if the operator finds that there are different wefts woven in, or weaving has serious dense paths or thin lines, the machine should be stopped immediately to cut off the woven weft yarns and remove them. During the removal, the warp yarns are picked by the weft yarns. The friction underneath produces a large amount of hairiness, so after reweaving, a hairy cloth surface of equal width and width appears in the original dismantled area. <\/p>\n


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\u3000(8)Broken End<\/strong><\/span><\/p>\n


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Appearance: One or more warp yarns of the fabric are broken, causing the distance between the two adjacent yarns on the left and right to become larger. . In plain weave, the two broken yarns are juxtaposed, just like in twill weave.If there are objects, there will be discontinuities in the cloth pattern. <\/p>\n


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Cause: The warp yarn was interrupted during weaving, the auto-stop device failed, and weaving continued without connecting the warp yarn properly. <\/p>\n


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\u3000 (9) Broken Pick (Broken Pick)<\/strong><\/span><\/p>\n


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Appearance: The weft yarn in the fabric is broken, but the two ends of the break are very close, that is, the length of the break smaller. Such defects are generally not noticeable. <\/p>\n


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Causes: 1). The weft yarn broke during weaving, but it continued to be woven in an instant, with only a small distance missing. 2). There are serious thick knots and flying flowers on the weft yarn, which will cause the weft yarn to break during disassembly. <\/p>\n


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\u3000 (10) Hundred feet (missing weft)<\/strong><\/span><\/ p><\/p>\n


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Appearance: This defect only occursBorn in twill weave, the warp yarns in the same part of each complete organization float on the cloth surface at the same time, like a centipede with multiple legs. <\/p>\n


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Cause: If one less weft yarn is woven into the twill fabric, the interweaving points will be reduced, and some warp yarns will float on the weft yarns twice in a row. <\/p>\n


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\u3000 (22) End Snarl<\/strong><\/span><\/ p><\/p>\n


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Appearance: One of the warps of a fabric has a small section of crimped and twisted together and woven into the fabric. It is more likely to occur in fabrics woven with strongly twisted yarns. <\/p>\n


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Cause: During warping, one of the warp yarns is too relaxed, causing one section to curl. <\/p>\n


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\u3000(12)Filling Snarl<\/strong><\/span><\/ p><\/p>\n


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Appearance: The weft yarns of the fabric have a small section of crimp and are twisted together and woven into the fabric. It is more likely to occur in fabrics woven with strongly twisted yarns. <\/p>\n


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Causes: 1). In the weft tube or the package yarn used for weft yarn, there is a phenomenon that small sections of yarn are curled and twisted. 2). The weft tube is improperly formed and the yarn unwinding is not smooth. 3). The weft tension is too small, the opening of the weaving mouth is unclear, etc. <\/p>\n


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\u3000(13)Reed Mark)<\/strong><\/span><\/p>\n


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Appearance: There is a large gap between the two warp yarns of the gray cloth, and the weft yarns woven into it can be seen, resulting in zigzag marks due to the action of the steel reed teeth. <\/p>\n


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Cause: 1). The reed teeth are deformed and the warp cannot be The control lies in positioning, or the reed teeth are loose. 2). There is one or several intervals in the warp.The root is subjected to excessive tension during weaving. <\/p>\n


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\u3000(16)Temple Mark<\/strong><\/span><\/p>\n


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Appearance: There are traces of needle pricks or needle pricks about 2 to 5 cm wide in the edge of the fabric. In severe cases, it may cause The weft yarn in this area is bent in a wavy manner <\/p>\n


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Cause: temple support selection needleThe thickness is not suitable, and the thorn ring of the temple support is stuck and cannot be rotated, or the rotation is not smooth enough. <\/p>\n


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\u3000 (17) Knot<\/span><\/strong><\/p>\n


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Appearance: There are thick and large balls tightly knotted on the cloth.<\/p>\n


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Cause: The warp or weft yarns are broken and then joined together, and the knot is too big and protrudes from the cloth surface.<\/p>\n


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\u3000 (18) Jump Yarn (Float)<\/strong><\/span><\/p>\n


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Appearance: The warp or weft yarns are not woven according to the specified organization and float on the surface of the cloth.<\/p>\n


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Cause: The opening angle of the fabric opening is too small, or the healds are unevenly suspended, and a small number of warp yarns are particularly loose. <\/p>\n


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\u3000 (19) Weaving Hole <\/strong><\/span><\/p>\n


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Appearance: The warp and weft yarns of the gray fabric are broken, forming holes of different sizes. This kind of defect is easy to occur in fabrics with dense warp and weft.<\/p>\n


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Cause: shuttle friction, licker-in holding the fishing hook, will cause the warp and weft to break, and rolling the shuttle can also Make the warp break <\/p>\n


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\u3000(20)\u677e\u7ecf(Slack End)<\/strong>
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Appearance: When a warp yarn is woven into the fabric, at its interweaving point, the cloth surface is more convex and concave than normal, with an upward arching phenomenon. Generally, it is called ribbed in the factory.<\/p>\n


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Cause: A single warp yarn is under less tension when weaving , or the warp yarn is too loose after joining it. <\/p>\n


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\u3000(21) Slack Filing<\/strong><\/span><\/p>\n


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Appearance: A weft yarn woven into the cloth, at its interweaving point, is more protruding from the cloth surface than normal, with an upward arching phenomenon. Generally, it is not obvious.<\/p>\n


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Cause: A single weft yarn is subjected to damage during weaving Less tension. <\/p>\n

<\/div>\n

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Extended reading: https:\/\/www.brandfabric.net\/full-dull-dobby-print-pongee-breathable-fabric\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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