The softness of polypropylene melt blown non-woven fabric varies depending on the production process and material, and is usually not very soft. The softness can be improved by adding softeners and improving the fiber structure.
Polypropylene melt blown non-woven fabric is a non-woven material made from polypropylene fibers through melt blown technology. Due to its unique production process and material characteristics, its softness has always been a focus of attention. So, is polypropylene melt blown non-woven fabric really soft? Below, we will provide a detailed analysis from the aspects of material characteristics, production processes, and methods to improve softness.
Material characteristics of polypropylene melt blown non-woven fabric
Polypropylene melt blown non-woven fabric is mainly made of polypropylene and processed through high-temperature melting, spinning, and mesh laying techniques. Polypropylene fibers themselves have good strength and chemical resistance, but relatively speaking, their softness is not outstanding. Therefore, the softness of polypropylene melt blown non-woven fabric mainly depends on factors such as its fiber structure, fiber density, and the connection method between fibers.
The influence of production process on softness
1. Fiber diameter: The finer the fiber diameter, the tighter the interweaving between fibers, and the softness of non-woven fabric is relatively good.Therefore, in the production process, by adjusting the spinning process and reducing the fiber diameter, the softness of non-woven fabric can be improved.
2. Fiber density: The higher the fiber density, the thicker the non-woven fabric and the relatively poorer its softness. Therefore, in the production process, it is necessary to control the fiber density reasonably to ensure a balance between the softness and thickness of non-woven fabrics.
3. Heat treatment: Heat treatment is one of the important processes to improve the softness of non-woven fabrics. By appropriate heat treatment, the connection between fibers can be made tighter, reducing the rigidity of fibers and thus improving the softness of non-woven fabrics.
Methods to improve softness
1. Adding Softener: In the production process of polypropylene melt blown non-woven fabric, a certain amount of softener can be added, such as silicone oil, soft resin, etc., to improve the lubricity between fibers, reduce the rigidity of fibers, and thus improve the softness of non-woven fabric.
2. Fiber modification: By chemical modification, physical modification and other methods, the surface structure and properties of polypropylene fibers are changed, such as increasing the hydrophilicity of the fiber surface, reducing the crystallinity of the fiber, etc., to improve the softness of non-woven fabrics.
3. Adjusting the fiber structure: By adjusting the arrangement of fibers and the degree of interweaving between fibers, the fiber structure of non-woven fabric can be improved, thereby enhancing its softness. For example, using a three-dimensional interwoven structure can increase the fluffiness and softness of non-woven fabrics.
Conclusion
In summary, the softness of polypropylene melt blown non-woven fabric varies depending on the production process and material. Although its softness is relatively poor, it can be improved by adding softeners, improving fiber structure, and other methods. In practical applications, suitable polypropylene melt blown non-woven fabric products can be selected according to specific needs.
Post time: Dec-13-2024