Introduction to the PH value of fabrics
Textiles PH Value Fabrics Textile Products
TextilesPH value refers to the residual acid and alkali content in fabrics, which affects human safety and health. One of the limit indicators for hazardous substances. Chinese national standard GB18401-2010 “National Basic Safety Technical Specifications for Textile Products” stipulates that the PH value of infants and children and textile products that are in direct contact with the skin should be controlled between 4.0 and 8.5, and the PH value of textile products that are not in direct contact with the skin should be controlled between 4.0 and 8.5. 9.0. If the product requires subsequent processing, it must undergo wet treatment during the process, and the pH value can be relaxed to between 4.0 and 10.5.
The pH value of human skin is generally between 5.5 and 7.0, which is slightly acidic. If the PH value of textiles exceeds the standard, it will destroy the weakly acidic environment on the surface of human skin, cause itching, make the skin susceptible to other pathogens, and even cause symptoms such as dermatitis.
In addition, Textiles A high or low pH value will make the fabric prone to damage during storage. It can be seen that the PH value of textile products is not only closely related to the health of consumers, but also inseparable from the quality of the textile products themselves.
There are many reasons why the pH value exceeds the standard. However, the fabric is not fully washed before being dried before leaving the factory after printing and dyeing. Taking certain neutralization measures is the main reason for unqualified pH value. In addition, inferior fabrics, etc. can also cause the PH value to exceed the standard.
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