Abstract: This application relates to a yarn carrier device with a yarn tension control function for a flat knitting machine, and a yarn tension control method. At the moment a carriage is connected to a yarn carrier device, a fixing frame carrying a bobbin ascends or descends on sliding rails installed on the yarn carrier device. The ascending or descending speed, time and distance of the fixing frame can be calculated directly according to a yarn carrier stop, the quantity of an unknitted portion of the yarn and the speed of the carriage. When the carriage contacts a yarn carrier, the fixing frame is controlled to ascend along the sliding rails. When the carriage drives the yarn carrier to enter a knitting area, the fixing frame is controlled to descend.

Abstract: A flat-knitted three-dimensional fabric with an internal support structure, and the fabric is consisted of an upper surface layer, a lower surface layer, and a support structure yarn in a middle, wherein the upper surface layer and the lower surface layer comprise alternate-knitted single-sided stitches and fully-knitted single-sided stitches; the upper surface layer and the lower surface layer are connected by means of tuck knitting of the support structure yarn in the middle to form the integrally formed three-dimensional fabric with an internal support structure; and the alternate-knitted single-sided stitches are correspond to tuck loops formed by the support structure yarn and are used to lock the tuck loops formed by the support structure yarn in the middle, such that the support structure yarn will not puncture the surfaces of the fabric when the fabric is pressed.

Abstract: A flat-knitted three-dimensional fabric with an internal support structure, and the fabric is consisted of an upper surface layer, a lower surface layer, and a support structure yarn in a middle, wherein the upper surface layer and the lower surface layer comprise alternate-knitted single-sided stitches and fully-knitted single-sided stitches; the upper surface layer and the lower surface layer are connected by means of tuck knitting of the support structure yarn in the middle to form the integrally formed three-dimensional fabric with an internal support structure; and the alternate-knitted single-sided stitches are correspond to tuck loops formed by the support structure yarn and are used to lock the tuck loops formed by the support structure yarn in the middle, such that the support structure yarn will not puncture the surfaces of the fabric when the fabric is pressed.