A fabric composed of Fashion outdoor fabric in a knotte […]
A fabric composed of Fashion outdoor fabric in a knotted relationship. Twisting relationship: a stable relationship formed by a group of yarns bending left and right, and the adjacent yarns surround the sheath. Knitted fabric is a fabric formed by knitting regular movement of yarns to form loops, and loops and loops are intertwined with each other. Therefore, the loop is the smallest basic unit of knitted fabric. This is also an important mark for identifying knitted fabrics. In weft knitting, each yarn forms a loop in one course, and the loop formed by one yarn is arranged along the weft direction of the fabric; in warp knitting, each yarn is only formed in each course One or two stitches are then transferred to the next course to form stitches. The stitches formed by one yarn are arranged along the warp direction of the fabric. Therefore, in a weft knitted fabric, one yarn can form a course, while in a warp knitted fabric, many yarns form a course.
Yarn is fed in the weft direction, bent into a loop and strung each other to form a fabric. According to whether the yarn feeding is one-way or two-way, weft knitting can be divided into two types. One is that the yarn is fed in one direction and woven into loops, and the fabric is knitted by circular knitting; the other is that the yarn is knitted into loops in the forward and reverse directions, and the fabric is knitted by flat knitting. Yarn is fed from the warp direction, bent into a loop and strung together to form a fabric. Its characteristic is that each yarn forms only one loop in a course, so each course is formed by many yarns forming a loop and intertwining each other. Continuous loop—new yarn or new loop meets the old loop inside and outside the hook; unloop the old loop is taken off the hook and put on the new loop loopmakes the yarn form a closed sum New coil of specified size; pull-pull the new coil away from the loop-forming area.
This new coil becomes the old coil in the next cycle. There are two types of loop forming process: knitting method and knitting method. In the loop forming process of the knitting method, the various stages of loop forming are carried out in the above order. In the loop forming process of the knitting method, the bending of the yarn starts from the unlooping and is carried out at the same time as the loop forming stage. On some knitting machines, each knitting needle completes the loop forming process in sequence; there are also some knitting machines where each knitting needle is aligned in a row at the same time. The number of stitches per unit length or unit area of a knitted fabric. It reflects the density of knitted fabrics under certain yarn thickness conditions. Usually expressed by horizontal density, vertical density and total density.
Horizontal density is the number of stitches within a predetermined length (such as 50 mm) of the knitted fabric along the course direction. Longitudinal density is the number of stitches within a predetermined length of the knitted fabric in the wale direction. The total density is the number of stitches of the knitted fabric in a specified area (such as 25 square centimeters). The ratio of horizontal density to vertical density of knitted fabric is called density contrast coefficient. The loop is the basic unit of the knitted fabric and is a spatial curve. Its projection on the fabric plane is composed of approximate straight sections and arc sections. The straight line is called the circle column and the arc line is called the circle arc. In knitted fabrics, a row of stitches arranged in a horizontal direction is called a course, and a row of stitches in a longitudinal string is called a wale. The horizontal distance between the corresponding points of two adjacent coils on the course is called the coil pitch. The vertical distance between the corresponding points of two adjacent coils on the wale of the coil is called the coil height.