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Views: 0 Author: Site Editor Publish Time: 2023-02-24 Origin: Site
Non-woven fabrics are textile short fibers or filaments that are oriented or randomly arranged to form a netty structure and then combined by mechanical, thermal viscous, or chemical methods. The sources of materials are extensive for the production of non-woven fabrics. The production process and product use are different, and the selected raw materials are not the same.
The Types of Non-woven Material
Synthetic fiber (chemical fiber)
Recycled fiber (artificial fiber)
3. Melt-blown Non-woven Fabric
4. Needle punch Non-woven Fabric
Non-woven fabrics can be made of a variety of materials. There are synthetic fibers, natural fibers, and artificial fibers.
Polypropylene (PP), polyester (PET); There are nylon (PA), viscose fiber, acrylic fiber, vinyl fiber (HDPE), chlorinated fiber (PVC), polyamide (nylon), degradable such as polylactic acid (PLA), and so on
Cotton, hemp, wool
Cellulose, rayon, is mainly from wood pulp fiber, viscose fiber, acetic acid fiber, copper ammonia fiber, etc. It is obtained by reshaping cellulose molecules of natural materials such as cotton wool, wood, bamboo, bagasse, and reed through a technological treatment methods.
Different production processes and the selection of raw materials are not the same. We take four kinds of non-woven fabrics as an example:
Almost all fibers can be spunlaced, the production of spunlaced non-woven fibers are short fibers, and the primary raw materials are:
(1) Natural fiber: cotton, wool, hemp, silk;
(2) Conventional fiber: viscose fiber, polyester fiber, acetate fiber, polypropylene fiber, polyamide fiber;
(3) Differential fiber: microfiber, special-shaped fiber, low melting point fiber, high crimping fiber, antistatic fiber;
(4) High-function fiber: sach as aromatic polyamide fiber, carbon fiber, metal fiber.
Spunlace non-woven fabrics are generally used to produce medical curtains, surgical clothes, surgical cover cloth, medical dressing materials, wound dressings, medical gauze, disinfection wipes, etc.
The spun-bond non-woven fabric is made of grain and color masterbatch after melting, spinning, spreading, and hot rolling reinforcement and its fiber length is a long filament.
The primary raw materials are generally synthetic fibers, such as polypropylene fibers and polyester fibers. They are used to produce medical smocks, disinfection covers, diapers, and other fabrics for filtration and liquid absorption products.
The process of melt-blown non-woven fabric takes advantage of high-speed hot air to stretch the polymer melt stream extruded by the spinneret of the die head, thus forming microfibers and condensing on the coagulation curtain goods drum and relying on their adhesion to become non-woven fabric.
Theoretically, all thermoplastic (high-temperature melting, low-temperature curing) polymer slice raw materials can be used for the melt-blown process. Polypropylene is the most widely used raw material for the melt-blown process. In addition, the commonly used raw materials for polymer slices in the melt-blown process include polyester, polyamide, polyethylene, polytetrafluorethylene, polystyrene, PBT, EMA, EVA, and so on. The use of melt-blown non-woven fabric is to make medical masks, and its middle layer is a composite material made of melt-blown materials.
Needling non-woven fabric is a kind of dry non-woven fabric. It uses the puncture effect of the needle to reinforce the fluffy fiber net into a cloth. Staple fiber is the rawest material for needling non-woven fabric.
The primary raw materials are polyester, polycaprolactam, viscose fiber, polypropylene, etc.
Currently used in the production of medical and health fields and personal and health fields of non-woven fabrics, mainly cotton, rayon and wood pulp, lint, synthetic fibers, and so on. Wood pulp fibers will be used to increase the water absorption of non-woven fabrics, PE will be used to augment water resistance, and viscose fibers can increase the absorption and retention ability of non-woven fabrics.
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