Production process and principle of needle-punched non-woven fabric

The production process and principle of needle-punched non-woven fabrics, when it comes to non-woven fabrics, many friends know that this is a kind of cloth composed of fibers and has the same nature as cloth, but it has some characteristics that the real cloth does not have, that is, the material of this non-woven fabric is made of polypropylene, moreover, it can be moisture-proof, difficult to tear and so on. A series of real cloth does not have the characteristics, so today I will introduce you how to make this kind of non-woven fabric, one of the methods is knitting, which is to hook the material of this non-woven fabric with a needle. The following small series will give you a detailed explanation of the production process and principle of needle-punched non-woven fabrics. Process Flow: The first step of acupuncture non-woven fabric is made of polyester and polypropylene raw materials, combed, combed and pre-punched, and the main acupuncture. The center is added with a mesh interlayer, and then subjected to double-Channel nuclear treatment, the airflow is formed into a mesh acupuncture composite cloth, and the post-filter cloth has a three-dimensional structure and is heat-shaped. After firing in the second step, the surface is most treated with chemical oil to make the filter cloth smooth in appearance and evenly distributed in micropores. From the surface, the product has good density, smooth and breathable surfaces on both sides, the filtration on the plate and frame compressor proves that high strength pressure can be used, the filtration accuracy is as high as 4 microns, and two raw materials of polypropylene and polyester can be provided according to the needs of users. Practice has proved that the non-woven filter cloth has better performance in Plate and Frame pressure filtration: coal slime treatment in coal preparation plant and wastewater treatment in steel plant. Wastewater Treatment in brewery and printing and dyeing plant. If other specifications of filter cloth are used, the problem that the filter cake is not pressed and difficult to fall off will occur. After the non-woven filter cloth is used, the pressure of the filter cake reaches 10k g- It is quite dry at 12 kg, and the filter cake will automatically fall off when the filter is opened. When selecting non-woven filter cloth, users mainly consider non-woven filter cloth of different thickness and quality according to air permeability, filtration accuracy, elongation, etc. Please point polyester needle felt and polypropylene needle felt for product parameters, specifications and varieties can be formulated. Needle-punched non-woven fabric series products are formed by fine combing, multiple precision acupuncture or proper hot rolling treatment. On the basis of introducing two high-precision acupuncture production lines at home and abroad, high-quality fibers are selected. Through the cooperation of different production processes and the matching of different materials, hundreds of different products are currently circulating on the market. Among them, there are mainly geotextile, geomembrane, velvet cloth, sound box blanket, electric blanket cotton, embroidery cotton, clothing cotton, Christmas crafts, leather base cloth and special cloth for filter materials. Processing principle the production of non-woven fabrics by needle-piercing method is completely through a mechanical action, that is, the needle-piercing effect of the needle-piercing machine, and the fluffy fiber mesh is reinforced and combined to obtain strength. Basic principle: using triangular section (Or other sections) The needle with the inverted hook on the edge of the edge repeatedly punctures the fiber net. When the hook passes through the fiber net, the fiber surface and the local inner layer fiber are forced to penetrate into the fiber net. Due to the friction between fibers, the original fluffy fiber net was compressed. When the needle withdraws from the fiber net, the punctured fiber bundle leaves the reverse hook and stays in the fiber net, so that many fiber bundles entangle the fiber net so that it can no longer return to its original fluffy state. After many times of acupuncture, quite a number of fiber bundles are pierced into the fiber net, so that the fibers in the fiber net are entangled with each other to form a needle-piercing nonwoven material with a certain strength and thickness.