Abstract
Knitting tension during weft-knitting is experimentally investigated with the aid of a model apparatus and a circular knitting machine. Although the knitting velocity in our experiment using the circular knitting machine was much lower than the ordinary velocity, it is possible to estimate real knitting tension from the results given in this article and in the light of those obtained by the experiment using the model apparatus.
(1) The larger the input yarn tension, the larger the knitting tension and the shorter the stitch length.
(2) Reductions in yarn tension and stitch length by robbing back are estimable from figures showing the relations between input yarn tension and knitting tension and between knitting tension and stitch length.
(3) The relation between knitting tension and the amount of work done by robbing back has nothing to do with knitting condition. The curve of that relation is conditioned by the properties of the yarn used.
(4) The larger the yarn and the higher its flexial rigidity, the larger the knitting tension. The lower the flexial rigidity of the yarn used, the lesser the effect of input yarn tension on knitting tension.
