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Gester Instruments | Professional Textile Testing Equipment Manufacturers Since 1997


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Test Standard

How to control the shrinkage rate of textiles

Textile shrinkage has always been a problem that plagues textile companies: the percentage of textiles that shrink after washing or soaking in water. In response to the problem of shrinkage, the national standard for textile products clearly stipulated as early as 2004: the washing size change rate of high-quality textile products cannot exceed 2%–3%, first-class products cannot exceed 2%–4%, qualified products cannot exceed 2%–5%. shrinkage rate“Big trouble”Looking at the entire testing-equipment' target='_blank'>textile industry, the current domestic textile market, whether it is a small workshop or a formal brand enterprise, basically does not indicate on the product packaging.“Shrinkage”; Is this the so-called collective negligence of the textile weaving industry? It is understood that if you want to control the shrinkage rate of textiles, you must go through a pre-shrinking pre-treatment or post-finishing process. This process will cost a certain amount of expenses both in terms of process flow and professional and technical personnel. At present, the detection of shrinkage rate of domestic textiles is a must-test item, especially for textile export enterprises. There are many textile enterprises exporting to the European and American textile markets. Different countries have different testing requirements for standard shrinkage washing machines or European standards and Japanese standards. Generally, textile enterprises have special departments responsible for shrinkage testing of textiles and other indicators testing departments. Of course, it is also feasible to entrust a third-party testing agency to detect and then show the test certificate. This is because the test proves that the shrinkage rate of textiles cannot be solved. The shrinkage rate of textiles is caused by materials, production processes and later use, so we must start with these aspects. To solve the problem of shrinkage of textiles, enterprises should start from the following aspects: 1. Qualified fabrics: When manufacturers purchase fabrics according to customer needs, they must check the quality and must test the purchased fabrics, because the quality of the fabrics It directly affects the shrinkage rate of finished products, prompting both upstream and downstream enterprises to pay attention. 2. Strict process: In the process of production, manufacturers should pay attention to finishing procedures, so that the shrinkage rate of fabrics after pre-shrinking treatment can be effectively controlled within the standard or customer requirements. 3. Strengthen self-inspection and self-control: the inspection should be strengthened before the finished product leaves the factory, and the product should be marked on the product label according to the requirements.“Shrinkage”, so that consumers can better understand the details of the product, and accept the inspection, so that it can be continuously strengthened and improved. General worsted woolen wool: shrinkage of 4% in warp and 3.5% in weft; silk crepe de chine: shrinkage of 10% in warp and 3% in weft. How to correctly grasp the shrinkage rate of different fabrics? First, find out what the shrinkage rate is. The shrinkage rate refers to the percentage of shrinkage of the fabric after the clothes are soaked and washed. The shrinkage rate is closely related to the fiber characteristics of the fabric, the structure of the fabric and the production and processing process. The material is a very important internal factor that causes the shrinkage rate of the textile, but the shrinkage rate of the textile during production and use is also normal. In different circumstances, how to reduce the shrinkage of textiles requires more specific operations of different materials and processes.

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