After scouring and bleaching, nonwoven fabrics produced from cellulose fibers not only appear clean and white in appearance, but also have water absorption properties, wetting properties, softness, and absorption and absorption of fuel and finishing agents. Utilization and other performance will produce large changes. In particular, scouring and bleaching processes are of great significance to the production and development of nonwoven sanitary material products. The use of enzymes for refining treatment not only does not affect the skeleton of cellulose, but also minimizes damage to the surface of the nonwoven fabric. If stirred during the bioenzyme scouring process, the fleece effect of the nonwoven fabric can be improved.
Cotton fiber is a natural cellulose fiber commonly used in nonwoven fabrics. The content of natural impurities in cotton fiber depends on the origin, maturity and some other factors of the raw cotton. The purpose of scouring is to remove natural or artificial impurities contained in the fibers, such as waxy substances contained in natural cotton fibers, and residual spinning oils, oil stains, etc. on synthetic fibers can also be removed after scouring. be removed. After scouring, the wetting and water absorption properties of nonwoven fabrics can be significantly improved, and the appearance quality of the product can be improved. At the same time, it can also prevent these impurities from interfering with the dyeing and finishing processes.
Since nonwoven fabrics themselves are not suitable for scouring processing in conventional fabric dyeing and finishing, when products need to be scouring, bulk fiber processing is usually used. When scouring, the temperature required by the process is greater than or equal to 100℃. If the equipment allows, it is best to use 120℃~130℃. Only this scouring condition can remove impurities in the fiber well and ensure good water absorption. sex. Under the condition that the dosage of scouring agent is constant, increasing the scouring temperature is beneficial to the removal of impurities and shortens the scouring time; conversely, the lower the temperature, the longer the scouring time.
The biological enzyme scouring method is a cellulose fiber scouring and processing technology that is being vigorously promoted. In the traditional scouring process, a large amount of clean water is consumed for rinsing after scouring and a large amount of sewage is produced, which has a great impact on the environment. However, the use of biological enzyme refining method can not only effectively remove impurities, but also greatly reduce environmental pollution. The use of enzymes for refining treatment not only does not affect the skeleton of cellulose, but also minimizes damage to the surface of the nonwoven fabric. Adopting appropriate stirring methods can have a certain positive impact on the cooking effect. If stirred during the bioenzyme scouring process, the time can be shortened and the dosage of enzymes can be reduced. At the same time, the fleece efficiency of the nonwoven fabric can be improved.
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