Stitch length (stitch) If the stitch length refers to the lateral density of the tuft, then the stitch length refers to the vertical density of the tuft. Expressed as the number of tufts in a straight 1 in (or 10 cm). It is very simple to change the stitch length by manually controlling the abacus. The result of manual control is to adjust the rotation speed of the licker-in roller, which is the running speed of the base fabric. When the speed is increased, the stitch length is increased. Stitch lengths range from 6 to 17 tufts/in, with 10 to 12 tufts/in being the most common. In order to obtain the best performance of the carpet, the general practice is to arrange the vertical density of the carpet close to or equal to the horizontal density. For example, a tufting machine with a gauge of 1/10 inch uses a transverse tuft density of 10 tufts/in, and the total number of tufts in the square inch should be 100. Secondly, if the needle distance is 1/8in and the transverse tufting density of 12 tufts/in is adopted, the number of tufts in the square inch should be 96. Although the number of tufts per unit area of the two is similar, it is obvious that the former has The tuft structure is more reasonable. At the same time, adjusting the transverse density of pile tufts can be used as one of the important means to adjust the quality of square meter pile yarn.
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