The occurrence of fabric defects in textile companies is unavoidable, and the reasons for fabric defects are also numerous. Common types of woven fabric defects and their causes are:
Jumping - Three or more warps or wefts are detached from each Other and skipped over multiple wefts or warp yarns.
Hundred feet - a complete organization of a twill or satin fabric with one or several weft yarns unwoven.
Loose - The warp yarn floats on the surface of the fabric and appears slightly darker than other warp yarns on the fabric.
Double weft - The two weft yarns are not undulated by the tissue and weave into the fabric.
The end of the knot - after the yarn breaks, it is knotted on the fabric to form a knot or a knot that is dense or has irregular length.
Double warp - a warp formed by the weaving of two warp yarns side by side in the fabric.
Weft-weft-weft knits into the fabric, showing a white loop on the fabric.
Jumping - Line or area-shaped float dots formed by 1 to 2 warp yarns (or weft yarns) without skipping a predetermined number of weft yarns (or warp yarns) in parallel on the top and bottom of the tissue.
Breaking Warp – The warp in the fabric breaks and presents a vaguely visible white mark on the cloth.
White thread weaving - white thread weave into the fabric to form the defect.
Rare - the fabric defect caused by the weft of the zonal tissue is less than that of the normal tissue.
Rough warp - coarse warp yarns are weaved into the fabric.
Fine warp - The warp yarn is finer than the normal warp yarn and weaves into the defect of the ground organization.
Weft-latitude - Local weft density is less than specified, showing thin, latitudinal, dark-colored stripes on fabric surfaces.
According to the survey, the presence of fabric fabric defects will reduce the fabric price by 45%-65%. As we all know, cloth inspection is the final stage of the completion of cloth production, and it is also an important part of quality control, directly affecting the final fabric quality. And finished grade. At present, foreign fabric inspection technology using computer technology can effectively reduce labor, improve accuracy, and speed, mature systems up to 100m/min, can greatly increase production efficiency. Representative products include I-TEX from Israel's EVS, Cyclops from Belgium's BARCO, and Fabriscan fabric's online inspection system from Uster, Switzerland.
In contrast, the cloth inspection in China's textile industry is based on observation by the human eye. It requires a high level of inspection personnel, labor intensity, and requires a long time of dedicated work. It is unfavorable to the health of workers and is subject to subjective factors. The rate is high, the detection speed is only 5-20m/min, it is difficult to adapt to the high-speed production methods with higher automation degree in the textile industry's previous processes. Therefore, it is imperative to study the real-time online inspection system of fabric defects suitable for domestic textile enterprises.
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