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Interpretation of 7 national standards in the field of textiles



my country is a major country in the textile industry, and the construction of a standard system for the textile industry has achieved initial results. The National Textile Standardization Technical Committee (…

my country is a major country in the textile industry, and the construction of a standard system for the textile industry has achieved initial results. The National Textile Standardization Technical Committee (TC 209), established in 1994, currently has 1,149 textile standards under its jurisdiction, including 523 national standards and 626 textile industry standards, involving textile fibers, yarns, fabrics and products, covering clothing, household, For the three major industrial application fields, the standard quantity and distribution basically meet the development needs of the industry.

Recently, the national standards team of my country’s textile industry has added “new recruits” and released 7 items National standard. “The national standards released this time include 6 basic method standards and 1 product standard.” Liu Feifei, deputy secretary-general of the National Textile Standardization Technical Committee, explained that among them, the Chinese standard “Textiles 1,2-dichloroethane, chloroethanol” “Determination of and Chloroacetic Acid” (GB/T 37633) is the standard for detection methods of hazardous substances. The method established by this standard is suitable for the qualitative and quantitative detection of 1,2-dichloroethane and its degradation products, namely chloroethanol and monochloroacetic acid, in textiles. It fills the gap in domestic testing technology for this project and provides a way to improve my country’s textile industry. Provide necessary technical support for product quality, protecting people’s health, avoiding trade barriers, and strengthening textile ecological safety and quality monitoring.

The national standard “Textiles Color Fastness Test – Color Fastness to Saliva” (GB/T 18886) is a strong standard supporting testing method and consumer concern standard. In order to accurately simulate the conditions of actual use of textiles, this revision adjusts the formula of artificial saliva and adds requirements for the pH value of artificial saliva. At the same time, it further improves the operability of the method and the comparability of the results. In order to improve the textile Product quality, especially the quality of infant and child clothing products, plays a certain role.

National Standard “Quantitative Chemical Analysis of Textiles – Mixtures of Acetate Fiber or Triacetate Fiber and Certain Other Fibers (Hydrochloric Acid Method)” (GB/T 37630) and “Quantitative Chemistry of Textiles Analysis of mixtures of polyacrylonitrile fibers and certain other fibers (formic acid/zinc chloride method)” (GB/T 37629) is a quantitative chemical analysis standard for new fibers. The two standards are based on the solubility characteristics of new fibers in different solvents. It is a simple and operable standard test method based on the characteristics of different solvents, as well as the actual detection cycle and accumulated practical experience. It has advantages in improving test efficiency and reducing the use of toxic and harmful chemical reagents. These two standards provide the industry with a unified qualitative and quantitative method, and play an important role in supervising false labeling and mislabeling of content, regulating market order, and protecting the rights and interests of downstream customers and consumers.

The national standard “Evaluation of Moisture Absorption and Quick Drying Properties of Textiles Part 2: Dynamic Moisture Transfer Method” (GB/T 21655.2) is the functional testing standard for textiles. Moisture-absorbing and quick-drying functional textiles are widely used in sportswear, mountaineering clothing, casual wear, underwear, etc. due to their ability to absorb moisture and quickly conduct moisture. The dynamic moisture transfer method is a commonly used method in a series of standards for testing and evaluating moisture-absorbing and quick-drying functional textiles. This standard combines the current development of the product market, modifies some assessment indicators, adds labeling requirements, unifies the method of functional labeling, and further improves the requirements for instruments and equipment. The implementation of this standard provides a scientific basis for market supervision and inspection, which is conducive to creating a good market competition atmosphere and protecting the rights and interests of consumers.

The national standard “Test Method for Fatigue Resistance to Appearance Changes of Textile Elastic Webbing” (GB/T 37635) is a standard for testing methods related to consumer experience needs. Elastic webbing is widely used in the field of textile clothing and home textiles. After consumers wear or use it for many times, the elasticity of some elastic webbings will weaken or disappear, and even the internal elastic fibers will break, seriously affecting the appearance and performance of the clothes. The formulation of this standard makes up for the lack of method standards in this field, can effectively characterize the fatigue resistance of webbing, and meet the needs of elastic webbing manufacturers and application companies in various fields.

The national standard “Knitted Sportswear” (GB/T 22853-2019) is suitable for identifying the quality of sportswear made of knitted fabrics as the main fabric. This revision fully considers users’ requirements for convenience and comfort in wearing clothing during sports, and makes targeted modifications and supplements to the old standards to make them more in line with the current market demand for knitted sportswear, such as Pilling performance, bursting strength, washing dimensional change rate and some color fastness indicators have been tightened, moisture absorption and quick-drying performance requirements and post-wash appearance requirements have been added, and requirements for surface defects, dimensional deviations, sewing quality, etc. Adjustments were made. The release of the new standards will provide more precise and specific specifications for manufacturing companies and testing departments, provide consumers with safer and more comfortable knitted sportswear products, and help guide corporate product innovation and production. </p

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Author: clsrich

 
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