In public perception, traditional fabrics are made of textiles. The name of non-woven fabric makes people confused. Does it really not need to be woven?
Non-woven fabric Also known as non-woven fabric, it is a fabric that does not need to be woven or spun. It is not made of yarns interwoven and braided one by one in the traditional sense, but a cloth formed by directly bonding fibers together through physical methods. In terms of production technology, non-woven fabrics directly use polymer slices, short fibers or filaments to form fibers into a web through airflow or machinery, and then reinforce them through hydroentanglement, acupuncture or hot rolling, and finally after finishing to form a non-woven fabric. of fabric.
The production process of non-woven fabrics can be divided into the following steps:
1. Combing fibers; 2. Fiber web forming; 3. Fixing fiber web; 4. Heat treatment ;5. Final finishing and processing.
Non-woven fabrics can be classified according to their causes:
(1) Spunlaced non-woven fabrics: spray high-pressure fine water flow onto one or more layers of fiber webs to make them The fibers become entangled with each other, thus strengthening the fiber web.
(2) Heat-sealing non-woven fabric: refers to adding fibrous or powdery hot-melt adhesive reinforcement materials to the fiber web, so that the fiber web is heated, melted and then cooled to reinforce the fabric.
(3) Pulp air-laid non-woven fabric: also known as dust-free paper and dry paper-making non-woven fabric. It uses air-laid technology to turn wood pulp fibers into single fibers, and uses airflow to agglomerate the fibers on the web curtain and then strengthen it into cloth.
(4) Wet-laid non-woven fabrics: The fiber raw materials placed in the water medium are opened into single fibers, and different fiber raw materials are mixed to form a fiber suspension slurry and transported to the web-forming mechanism. In the wet state, it is formed into a web and reinforced into cloth.
(5) Spunbond non-woven fabric: After the polymer is extruded and stretched to form continuous filaments, it is laid into a web. The fiber web is bonded or mechanically reinforced to become a non-woven fabric.
(6) Melt-blown non-woven fabric: The production steps are polymer input-melt extrusion-fiber formation-fiber cooling-web forming-reinforcement into cloth.
(7) Needle-punched non-woven fabric: It is a type of dry-laid non-woven fabric. It uses the puncture effect of needles to reinforce the fluffy fiber web into cloth.
(8) Stitch-bonded non-woven fabric: It is a type of dry-laid non-woven fabric that uses warp-knitted coil structure to embroider fiber webs, yarn layers, non-woven materials (such as plastic sheets, etc.) or their The combination is reinforced to make a non-woven fabric.
A wide range of fiber raw materials are needed to make non-woven fabrics, such as cotton, linen, wool, asbestos, glass fiber, viscose fiber (rayon) and synthetic fibers (including nylon, polyester, acrylic , polyvinyl chloride, vinylon, etc.). But nowadays, non-woven fabrics are no longer mainly made of cotton fiber, and other fibers such as rayon have taken its place.
Non-woven fabric is also a new type of environmentally friendly material, which is moisture-proof, breathable, elastic, light weight, non-combustible, and easy to It has the characteristics of decomposition, non-toxic and non-irritating, rich colors, low price, and recyclable, so it has a wide range of applications.
Among industrial materials, non-woven fabrics are mostly used to make filter media, sound insulation, electrical insulation, Products such as packaging, roofing and abrasive materials. In the daily necessities industry, it can be used as clothing lining materials, curtains, wall decoration materials, diapers, travel bags, etc. In medical and sanitary products, it can be used in the production of surgical gowns, hospital gowns, masks, sanitary belts, etc.
