Generally,fabrics are divided into two categories: woven fabrics and knitted fabrics. Woven fabric is a fabric formed by intertwining the warp and weft yarns perpendicularly to each other. Knitted fabrics are formed by knitting needles to form loops of yarn or filaments, and then the loops are interlocked with each other. Knitted fabrics and woven fabrics have their own unique characteristics in terms of processing technology, fabric structure, fabric characteristics and finished product use due to different weaving methods. Here are some comparisons.
Knitted and woven can be distinguished in several ways:
1. Basic Concepts
Knitted fabric refers to the process of using knitting needles to form loops of various raw materials and yarns, and then connecting them into knitted fabrics through strings. It can be done transversely or longitudinally, transverse weaving is called weft knitted fabric, and longitudinal weaving is called warp knitted fabric. The loop is the small basic unit of the knitted fabric, and the loop is composed of the loop stem and the extension line in a space curve.
Woven fabrics are made of two or more sets of mutually perpendicular yarns interwoven at a 90-degree angle for warp and weft. Longitudinal yarns are called warp yarns, and horizontal yarns are called weft yarns.
Each intersection point between warp and weft is called a weave point and is a small basic unit of a woven fabric.
2.Fabric weave characteristics
Knitted fabrics are formed by the bending of yarns in space, and each loop is composed of one yarn. When the knitted fabric is subjected to external tension, such as longitudinal stretching, the bending of the loops changes, and the height of the loops also increases. At the same time, the width of the coil is reduced. If the tension is transversely stretched, the situation is the opposite. The height and width of the coil can obviously be converted to each other under different tension conditions, so the knitted fabric has great extensibility. It can extend in all directions and has good elasticity. Because the knitted fabric is formed by hole-shaped coils, it has greater air permeability and feels soft.
Woven fabrics are somewhat curved due to the interweaving of warp and weft, and only bend in the direction perpendicular to the plane of the fabric. The degree of bending is related to the mutual tension between warp and weft, as well as the stiffness of the yarn. When the woven fabric is subjected to external tension, such as longitudinal stretching, the tension of the warp increases and the bending decreases, while the bending of the weft increases, such as longitudinal stretching, until the warp is completely straightened, and the fabric shrinks laterally. When the woven fabric is stretched laterally by external tension, the tension of the weft yarn increases, the bending decreases, and the warp yarn bending increases, such as the lateral stretching continues until the weft yarn is completely straightened, and the fabric shrinks longitudinally. The warp and weft yarns do not change, unlike knitted fabrics.
Post time: May-12-2022
