Basic knowledge of fabrics-what is non-woven fabric?

What is non-woven fabric? Because it is a fabric that does not need to be spun and weaves, it just aligns or randomly arranges short textile fibers or filaments to form a web structure, which is then reinforced by mechanical, thermal bonding or chemical methods. To put it simply: it is not made of yarns that are interwoven and knitted together, but the fibers are directly bonded together by physical methods, so when you get the sticky scale in your clothes , You will find that it is impossible to draw out the thread ends. Non-woven fabrics break through the traditional textile principles, and have the characteristics of short process flow, fast production speed, high output, low cost, wide use, and multiple sources of raw materials. Its main uses can be roughly divided into: (1) Medical and health cloths: surgical gowns, protective clothing, disinfection wraps, masks, diapers, sanitary napkins, etc.; (2) Home decoration cloths: wall coverings, table cloths , Bed sheets, bedspreads, etc.; (3) Follow-up cloth: lining, adhesive lining, wadding, shaped cotton, various synthetic leather base cloth, etc.; (4) Industrial cloth: filter material, insulating material, cement packaging bag, Geotextiles, covering cloths, etc.; (5) Agricultural cloths: crop protection cloths, seedling cloths, irrigation cloths, thermal insulation curtains, etc.; (6) Others: space cotton, heat and sound insulation materials, linoleum, cigarette filters, bags Tea bags etc. Classification of non-woven fabrics: 1. Spunlace non-woven fabrics. The spunlace process sprays high-pressure fine water onto one or more layers of fiber webs to entangle the fibers with each other so that the webs can be reinforced and have a certain strength. 2. Thermally bonded non-woven fabric Thermally bonded non-woven fabric refers to the addition of fibrous or powdery hot-melt bonding reinforcement materials into the fiber web, and the fiber web is heated, melted and cooled to reinforce the fabric. 3. Pulp air-laid non-woven fabric Air-laid non-woven fabric can also be called dust-free paper and dry paper-making non-woven fabric. It uses air-laid technology to open the wood pulp fiberboard into a single fiber state, and then uses the air-flow method to agglomerate the fibers on the web curtain, and then strengthen the fiber web into a cloth. 4. Wet-laid non-woven fabrics Wet-laid non-woven fabrics are used to open fiber raw materials placed in an aqueous medium into single fibers, and at the same time mix different fiber raw materials to form a fiber suspension slurry, which is transported to the web forming mechanism, and the fiber In the wet state, a net is formed and then reinforced into a cloth. 5. Spunbond non-woven fabric Spunbond non-woven fabric is formed after the polymer has been extruded and stretched to form continuous filaments, the filaments are laid into a web, and the web is bonded by itself, thermally bonded, and chemically bonded. Combination or mechanical reinforcement method to make the web into a non-woven fabric. 6. The process of meltblown nonwoven fabric: polymer feeding---melt extrusion---fiber formation---fiber cooling---netting---reinforcement into fabric. 7. Needle-punched non-woven fabrics Needle-punched non-woven fabrics are a kind of dry-laid non-woven fabrics. Needle-punched non-woven fabrics use the puncture effect of needles to reinforce the fluffy web into a cloth. 8. Stitched non-woven fabrics Stitched non-woven fabrics are a kind of dry-laid non-woven fabrics. The stitching method uses the warp-knitted loop structure to align fiber webs, yarn layers, non-woven materials (such as plastic sheets, plastic thin metal Foil, etc.) or their combination is reinforced to make a non-woven fabric.