Production method of nonwoven fabrics
The production methods of nonwoven fabrics mainly include various processes such as thermal bonding, needling, water pricking, and spraying.
1. Thermal bonding is a method of bonding fibers to each other through high temperature and pressure. Firstly, the raw materials, chemical fibers or natural fibers, are spun and mixed to form a uniform fiber network on the mechanical roller group; Then heat and apply a force to blend and bond together. Finally, it is made by processing such as cooling, cutting, and discrimination.
2. Acupuncture refers to placing a fiber network or fiber layer on the upper and lower sides of a bristle needle. As the needle rotates, the needle is inserted into the fibers and interlaced together, causing them to combine with each other. The advantage of acupuncture is that it can change the thickness, strength, and breathability of non-woven fabrics, and also has special functions such as flame retardancy and anti-static properties.
3. The water spunlace method uses high-pressure water flow as a medium to disperse fibers, and then forms a fiber mesh through the assembly of sieve plates, allowing the fibers to naturally wrap and form a fiber mesh. Finally, the non-woven fabric is obtained through drying, ironing, and equal treatment. Spunlaced non-woven fabric has the characteristics of high strength, good softness, good breathability and moisture absorption.
4. Spray coating method is a method of mixing plastic particles and solvents and spraying them onto a fiber mesh, which is then dried, cooled, and shaped to produce non-woven fabrics. Sprayed non-woven fabrics have the advantages of uniform thickness, lightweight, and high hardness. Functional substances such as flame retardancy, stain resistance, and sterilization can be added according to needs.