What are the types of non-woven fabrics?

by:Sunshine     2020-03-14
What are the types of non-woven fabrics? There are also many kinds of non-woven fabrics. The exact name of non-woven fabrics should be non-woven fabrics or non-woven fabrics. Because it is a fabric that does not need spinning and weaving, it only directional or randomly propped textile staple fibers or filaments to form a fiber mesh structure, then it is reinforced by mechanical, thermal or chemical methods. Non-woven fabric breaks through the traditional textile principle and has the characteristics of short process flow, fast production speed, high output, low cost, wide use and many sources of raw materials. What are the types of non-woven fabrics? First, the spunlaced non-woven spunlaced process is to spray high-pressure fine water flow onto a layer or a multi-layer fiber net, so that the fibers are entangled with each other, so that the fiber net can be reinforced and has certain strength. The spunlaced non-woven fabric is similar to other dry non-woven fabrics. It needs to be prepared by raw materials, opened and mixed, and combed into a net (Or air flow into a net or cross-folded into a net) , Spunlaced reinforcement, finishing, drying, coiling, finished product cutting inspection and packaging warehousing. The net forming method of spunlace cloth can be dry Net forming, wet net forming, or even melt spinning method. Common spunlace process: fiber metering---Open loose mix---Combing into a net---The front and back sides of the fiber net are pierced (Strict water treatment is required)---Drying---Roll-up. Spunlaced non-woven fabric principle: the fiber mesh is transmitted by a conveying mesh curtain or a metal mesh curtain and is pre-wetted (Roller or water curtain) Pre-wet and pre-spunlaced, then enter the spunlaced area, and the fiber net in the spunlaced area is sprayed by extremely fine high-pressure water flow emitted by several spunlaced devices, the surface fiber enters the fiber net vertically due to strong impact. At the same time, because the conveying curtain has a three-dimensional structure, the water flows through the fiber net and hits the conveying curtain, which is reflected back at different angles, the reverse impact on the fibers is formed, so that the fibers are displaced in different directions, so that the fibers in the fiber net are entangled and tightly held together to form a wet non-woven fabric with a certain strength. The water flow after multiple reflections is taken away by the spunlaced device and the vacuum suction tank under the net curtain due to energy reduction and pressure reduction, and then reused after being treated by the filtration circulation system. The wet non-woven fabric is vacuum dehydrated and then enters the drying device to dry and then becomes a cloth. The spunlace cloth is formed after the fiber is entangled by the fiber sprayed with a high-pressure water needle. After passing through the carding machine, the fibers are combed and leveled, then laid on the transportation line through the netting machine, and finally formed after being entangled by high-pressure water injection. After molding, it is also rolled into a spunlaced cloth roll through a high-temperature dryer. Spunlaced non-woven fabrics are classified according to different patterns, such as plain straight paving and Cross Printing. The general raw materials are VISCOSE adhesive and POLYESTER, with different contents. Second, hot-bonded non-woven fabric refers to the addition of fiber-like or powdery hot-melt bonding reinforcement materials in the fiber net, and the fiber net is heated, melted, cooled and reinforced into a cloth. Three, Pulp meal air flow Net non-woven fabric can also be called clean paper, dry paper Non-woven fabric. It uses the airflow forming technology to loosen the wood pulp fiberboard into a single fiber state, and then uses the airflow method to make the fiber agglomerate on the mesh curtain, and the fiber mesh is added to the cloth. 4. Wet non-woven wet non-woven fabric is to loosen the fiber raw materials placed in the water medium into single fibers, and at the same time mix different fiber raw materials to make fiber suspension slurry, which is transported to the mesh forming mechanism, the fiber is made into a net and then fixed into a cloth in a wet state. Five, spunbonded non-woven fabric is after the polymer has been squeezed out and stretched to form a continuous filament, the filament is laid into a net, and the fiber net is bonded, bonded, chemically bonded or mechanically reinforced by itself, make the fiber mesh into a non-woven fabric. Six, melt spray non-woven fabric process: Polymer feeding---Melt Extrusion---Fiber formation---Fiber cooling---Net---Reinforced into cloth. Seven, acupuncture non-woven fabric is a kind of dry non-woven fabric, acupuncture non-woven fabric is to use the puncture effect of the needle to reinforce the fluffy fiber net into a cloth. Eight, sewing non-woven fabric is a kind of dry non-woven fabric, the sewing method is to use the warp coil structure to fiber mesh, yarn layer, non-textile materials (For example, plastic sheets, plastic thin metal foil, etc) Or their assemblies are reinforced to make non-woven fabrics.
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