A number of yarns form a stable relationship and form a […]
A number of yarns form a stable relationship and form a fabric.
These yarns can be divided into different yarn groups according to the running direction; the yarns in the same direction can be divided into different yarn groups.
If there is only one set of yarns running in one direction, a stable relationship is required, and the adjacent yarns must be bent and then passed through the sleeves to continue in a spatial curve. This relationship is called a winding; if there is two directions The yarn group, in order to form a stable relationship, must be bent up and down in an alternating contact after the encounter, and this relationship is called a cross. The intersection is a flat curve or a half-wound.
The cross-over and wrap-around relationship can be composed of several yarns together, and can also be formed after crossing a plurality of yarns. Different operating rules form a plurality of cross-wound combinations to form a variety of tissues.
Crossing and winding are two stable structural relationships that the yarn can make. At the same time, there are two unstable structural relationships of contact and separation in the yarn group, which together produce a balanced and stable force in the plane of the fabric, so that the fabric maintains a stable shape and specific mechanical properties.
Analyzing the yarn groups in the fabric and its running direction, running law and formation relationship, it is possible to clearly understand various fabrics.
A group of yarns running in only one direction, the adjacent yarns are wound up, and constitute a knitted fabric. The crochet system of the circular machine, the flat knitting machine and the warp knitting machine can complete the bending and regular changes of the yarn to form a winding relationship. There are a variety of operating rules, forming different organizations; warp knitting can also be used in the weft direction.
A group of yarns running in two directions, the encountering yarns intersecting to form a woven fabric. The shuttle loom can complete the upper and lower opening and closing of the warp yarns, insert the weft yarns, and change the warp yarn running rules to form various tissues.