1. Warp direction, warp yarn and warp density -- fabric length direction; the yarn in this direction is called warp yarn; the number of yarns arranged within 1 inch is warp density (warp density);
2. Weft, weft and weft density -- the direction of fabric width; the yarn in this direction is called weft, and the number of yarns arranged within 1 inch is weft density (weft density);
3. Density -- it is used to indicate the number of yarns per unit length of woven fabric, which is generally the number of yarns within 1 inch or 10 cm. China's national standard stipulates that the number of yarns within 10 cm is used to express the density, but textile enterprises still use the number of yarns within 1 inch to express the density. For example, "45x45 / 108x58" usually indicates that the warp and weft are 45, and the warp and weft density are 108 and 58.
4. Width -- the effective width of a fabric. It is usually expressed in inches or centimeters. The common ones are 36 inches, 44 inches, 56-60 inches, etc., which are respectively called narrow width, medium width and width. Fabrics higher than 60 inches are of extra wide width, which is usually called wide cloth. Today, the width of extra wide fabrics in China can reach 360 cm. The width is usually marked after the density. For example, if the fabric mentioned in 3 is added with the width, it is expressed as "45x45 / 108x58 / 60", that is, the width is 60 inches.
5. Gram weight -- the gram weight of a fabric is generally the gram number of square meter fabric weight. The gram weight is an important technical index of knitted fabric, and the gram weight of woolen cloth is usually taken as an important technical index. The gram weight of denim fabric is generally expressed as "Oz", that is, ounces per square yard of fabric weight, such as 7 ounces and 12 oz denim;
6. Yarn dyed fabric -- in Japan, it refers to the process of dyeing yarn or filament, and then weaving with colored yarn. This kind of fabric is called "color weaving fabric". The factory producing color woven fabric is generally called dyeing and weaving factory, such as denim, and most of shirt top materials are color woven fabric;
