A Model of the single-jersey Loop-formation Process

摘要

A determisnitic model of the single-jersey loop-formation process is formulated by incorporating the initial geometry of the knitting zone, the contribution of the take-down load, and the force required to move the needles. This model is based on the principle that the loop length is decided by the heitht beneath the sinker/verge line to which a needle is pulled up by thtension in the yarns of the loop. A computer program, based on the model of the single-jersey loop-formation process, is developed for predicting the effect of some relevant yarn, machine, and process variables on loop length as well as the resulting yarn-tension profile inside the knitting zone. The model is validated qualitatively in terms of the loop length and yarn-tension profile inside the knitting zone as well as quantitatively only in terms of the loop length. This modelled system is then explored to determine favourable conditions for knitting on orthodox single-jersey knitting systems.