Non-woven fabrics have become an extremely important part of the textile industry

Author: Date: 2021-02-08 08:04:07 Hits: 5 In recent years, non-woven fabric has become an extremely important part of the textile industry. The technical development of polymers, nonwovens processing and fabric finishing has greatly improved the physical and mechanical properties of fabrics, including fabric handling and drape, tensile properties, abrasion resistance, pilling and washing stability, dyeing and printing , Has created prospects for the application of non-woven fabrics. Especially in clothing jackets. This chapter briefly discusses the production process of various nonwovens, including web forming, web consolidation and finishing. It also discussed the introduction of various joining technologies, and finally summarized the future trends of the nonwoven market. Non-woven fabrics do not rely on the interweaving of yarns to achieve internal cohesion. In essence, they neither have an organized geometric structure. They are essentially the result of the relationship between a single fiber and another single fiber. This provides the nonwoven fabric with its own characteristics, with new or better characteristics (absorption, filtration), so it can be applied to other applications. Seams of car seat covers: performance and performance So, what is a non-woven fabric? Non-woven fabrics are felted or bonded together. Non-woven fabrics have many uses in textile products, especially as internal reinforcing agents and used to assist sewing (such as interfaces). Many non-woven fabrics are disposable products. Laminated fabrics may not Weaving cloth, but bonding together by heating or glue partly reviewed the progress of dyes and colorants, including chromium materials for industrial textile applications, optical effect pigments and microencapsulated colorants. In fact, non-woven fabrics are products with their own characteristics and performance, but they also have weaknesses. They are all around us, and we use them unknowingly every day. Indeed, they are often hidden. Non-woven fabrics can be made into non-woven fabrics with absorbency, air permeability, drape, flame retardancy, heat-sealability, light weight, lint-free, moldable, soft, stable, hard, tear-resistant, and waterproof according to needs cloth. Obviously, despite this, not all the mentioned characteristics can be combined in a single non-woven fabric, especially those contradictory. There are two main manufacturing methods for non-woven fabrics: felting or bonding. The fabric uses fibers instead of yarns. Lay them randomly or in a uniform manner to form a mesh layer. They are fixed together by gluing or bonding process. Felt Wool Felt is the most common non-woven fabric, made of short staple fibers made from wool or other animal hair (such as camel). Wool is an ideal fiber because its surface has natural hook-like scales, which will interlock with each other when moisture, heat and vigorous exercise are applied. Hot and humid conditions can cause the fiber to curl, and the scales lock together to prevent the fiber from straightening again. When you wash a natural wool jumper and shrink in size, you actually feel the jumper, and no matter how hard you try to stretch it, you can’t make it bigger. Because the fibers are loosely connected, nonwoven fabrics are generally more porous than other forms of textiles. To achieve integrity, the fibers in the nonwoven fabric are bonded by using one of the following methods. There are three main methods for the manufacture of bonded fabrics: Dry-laid webs: Put the fiber web in a drum, and then inject hot air to bond the fibers together. Wet-laid web: The fiber web is mixed with a solvent to soften the fibers and release a gel-like substance, bond the fibers together, and then dry the fiber web. Direct spinning: spinning fibers onto a conveyor belt, then spraying glue onto the fibers, and then pressing them to bond; if the fibers are thermoplastic (it will be deformed by heating), no glue is needed in this process. Related tags: Previous: Fiber selection for nonwoven production