Non woven fabric is a type of textile formed by wet or dry processing of fibers, which has the characteristics of softness, breathability, and wear resistance. It is widely used in fields such as healthcare, agriculture, clothing, and construction. The production process of non-woven fabric mainly includes key steps such as fiber loosening, mixing, pretreatment, network preparation, shaping, and finishing.
Firstly, the fibers are loosened. The main raw materials for non-woven fabrics include polyester fibers, nylon fibers, polypropylene fibers, etc. These fibers are often compacted and clumped during the production process, so they need to undergo loosening treatment. The main methods of loosening include boiling, air flow, and mechanical loosening, with the aim of fully unfolding and loosening the fibers for subsequent processing.
Next is mixing. During the mixing process, fibers of different types, lengths, and strengths are mixed together in a certain proportion to achieve the required performance requirements. The mixing process is usually carried out through methods such as pulp stirring, loosening mechanical mixing, or air flow mixing to ensure uniform mixing.
Next is preprocessing. The purpose of pretreatment is to remove impurities on the surface of fibers, improve their adhesion, and increase the strength and stability of non-woven fabrics. Common pre-treatment methods include pre stretching, coating adhesive, melt spraying, etc., and can also be treated for waterproofing, anti-static, etc. according to different product requirements.
Then is the preparation of the network. In the preparation network stage of non-woven fabric, the pre treated fibers are formed into a certain arrangement structure through wet or dry methods. Wet preparation of non-woven fabric involves suspending fibers in water to form a slurry, which is then filtered, dehydrated, and dried to form a fabric. The dry method for preparing non-woven fabrics is to arrange and fix the fibers into a mesh structure in high-speed airflow through methods such as glue spraying and melt spraying.
Next is finalization. Setting is a crucial step in the production of non-woven fabrics. By using methods such as hot air setting and high-frequency setting, the fiber network is shaped and fixed into a cloth shape under certain temperature and pressure conditions. The shaping process directly affects the strength, shape, and appearance of non-woven fabrics, and requires strict control of parameters.
It’s organizing. Sorting is a process in the production of non-woven fabrics, which mainly includes cutting, hot pressing, rewinding, and other processes. The pre shaped non-woven fabric is then processed to obtain the required finished product size and shape. During the sorting process, dyeing, printing, and laminating can also be added to enhance the aesthetic and functional properties of non-woven fabrics.
In summary, the key steps in the production process of non-woven fabrics include fiber loosening, mixing, pretreatment, network preparation, shaping, and finishing. Each step is crucial and directly affects the quality and performance of the final product. With the widespread application of non-woven fabrics in various fields, the production technology of non-woven fabrics is also constantly innovating and improving to meet market demand and product updates.
Dongguan Liansheng Nonwoven Fabric Co., Ltd., a manufacturer of non-woven fabrics and non-woven fabrics, is worthy of your trust!
Post time: May-21-2024