Development Of A New Method To Quickly Test And Evaluate The Sizing Effect Of Filament

Sizing is the key procedure in weaving of textile industry. There is a saying that good sized is half woven. The warp yarn is endued with the ability of abrasion-proof through sizing. The sizing effect determines the weaving efficiency of weaving workshop. So the quick testers and methods to evaluate the sizing effect of warp yarn are needed. At present, the testers and methods to test the sizing effect of filament are not appropriate. The disadvantages are that the testing results are influenced by the experiment, and that the testing is taking time. Due to this reason, this dissertation introduces a new testing method of evaluating the sizing effect on zero-twist multifilament yarns using laboratory techniques, Viz. from the image processing and analyzing, we get the sizing effect of zero-twist multifilament yarns.The quick testers and methods which introduced by this dissertation includes a new weaving simulation set, a CCD photo system and an image processing and analyzing software.Based on analyzing the force of warp yarn receives on the weaving machine, we developed the new weaving simulation set. On the weaving machine, the warps are abraded by the yarn rider, frame, reed and warp. Furthermore, the warp yarn also endues the drawing, tortuosity and impulsive force applied by the weaving machine. The most severe abrasion is the abrasion between warp and warp. So the new weaving simulation set mostly simulates the tangent direction friction that produced by the friction of filaments to filaments and the drawing, tortuosity and impulsive force. The experiment parameters are chosen by the parameter optimization.The CCD photo system is used to photograph the filament yarn which has endured the load of weaving inflicted by the new weaving load simulation set and display, store the image of filament. Then the image is processed and analyzed by the image processing software.The image processing software is based upon Microsoft Visual Basic 6.0 whichprocesses and analyzes the image photographed by the CCD camera. The software analyzes the bundling which is most important for the filament weaving ability. The software includes median filter, thresholding, removing the noises in images and the module of analyzing the bundling of the sized filament yarn endured the load of weaving inflicted by the new weaving load simulation set. From the contradistinctive experiment of eyeballing and the software of this dissertation introduced, we came to the conclusion that the software's result is authentic.This new method to quickly test and evaluate the sizing effect filament yarn is validated by the experiment. It can continuously and quickly test the sizing effect and the result indicates that this method can evaluate the sizing effect of filament well.