Before the textile fabrics used in clothing leave the factory as finished products, the quality of the fabrics has been inspected and graded according to national standards.
The quality of various types of fabrics for work clothes has its own evaluation standards. The evaluation basis generally includes items such as physical quality, physical indicators, fabric surface defects, and dye fastness.
1. Colored cotton and polyester cotton
Evaluation based on physical indicators, neps and impurities, and fabric surface defects. Physical indicators include warp and weft density and warp and weft fracture strength. Neps and impurities are represented by qualified defect strings. Fabric defects refer to weaving defects and yarn defects.
2. Printed and dyed cotton cloth
It is evaluated by combining the crystal quality of both intrinsic quality and appearance quality. Intrinsic quality refers to breaking strength, weft density, shrinkage and dye fastness, and is evaluated on a per-critic basis; appearance quality refers to fabric surface defects, which are evaluated on a piece-by-piece basis.
3． Wool fabric
The products are graded according to four categories: physical quality, physical indicators, color fastness and appearance defects. Physical indicators include width, square meter weight, breaking strength, shrinkage and non-wool fiber content. Physical quality refers to the appearance, feel, style, etc., and is evaluated by people after “pinching, touching, grabbing, and looking” the product and comparing it to the standard sample.
4. silk fabric
Evaluate based on two aspects: intrinsic quality and appearance quality. Intrinsic quality includes length, width, warp and weft density, weight, breaking strength, shrinkage and other physical and mechanical indicators as well as dyeing fastness. Appearance quality refers to defects produced during the weaving, scouring, dyeing, printing and finishing processes.
5. Ramie cloth
Gray fabrics are graded according to physical defects and appearance defects. Physical properties include breaking strength and density. Printed and dyed fabrics are evaluated based on intrinsic quality and appearance defects. Intrinsic qualities include weft density, strength, shrinkage and dye fastness.
6． knitted fabric
Cloth for underwear is evaluated based on physical indicators on a batch-by-batch basis. Including transverse density, longitudinal density, square meter dry weight and strength. Fabrics for outerwear, stretch polyester warp-knitted fabrics and weft-knitted fabrics are evaluated based on physical indicators and appearance defects. The physical indicators of warp knitted fabrics include loop density, width, square meter dry weight, and breaking strength. The physical indicators of weft knitted fabrics include width and square meter dry weight.
