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non woven manufacturing process
Acupuncture non-woven fabric production process and principles, talking about non-woven fabrics, many friends know that this is a kind of fabric composed of fibers with the same properties of cloth,
non woven manufacturers in china
However, it does have some characteristics that are not available in cloths. That is, the material of this non-woven fabric is composed of polypropylene, and it can be dampproof, difficult to tear, etc., which is not possessed by a series of real cloths. To introduce to you how to make such a non-woven fabric, one of the methods is the knitting method, which is to crochet the material of the non-woven fabric with a needle. The following Xiao Bian gave everyone a detailed explanation of the process and principle of acupuncture non-woven fabric production.
Acupuncture non-woven production process and principle
  non woven manufacturing process
Process flow:
    The first step of acupuncture non-woven fabric is made of polyester, polypropylene raw materials, after carding, combing, pre-acupuncture, the main acupuncture. The center adds a net cloth sandwich layer, and then undergoes dual channeling, the air-laid acupuncture is compounded into a cloth, and the back pressure filter cloth has a three-dimensional structure and is heat-set.
    After the second step of singeing, the chemical oil agent is applied on the surface to make the surface of the filter cloth smooth and the pores are distributed evenly. From the surface, the density of the product is good, and the surfaces of the two surfaces are smooth and air-permeable, and are good on the plate and frame compressor. Filtration use proof, can use high-strength pressure, filtration accuracy up to 4 microns, according to user needs to provide polypropylene and polyester two raw materials.
   non woven manufacturing process
Practice has proved that the non-woven filter cloth has better performance in pressure filtration of the plate and frame: examples are the treatment of the coal slurry in the coal plant and the wastewater treatment in the steel plant. Wastewater treatment in breweries and printing and dyeing plants. Such as using other specifications of filter cloth will appear filter cake is not dry, and it is difficult to fall off, after using non-woven filter cloth, the filter cake is quite dry when the filter pressure reaches 10kg-12kg, and the filter cake is opened when the filter is opened. It will fall off automatically. When users choose non-woven filter cloth, they mainly consider different thickness and quality of non-woven filter cloth according to air permeability, filtration accuracy, elongation, etc. Please refer to polyester needle felt and polypropylene needle felt for product parameters. Can be formulated.
non woven manufacturing process
Acupuncture non-woven products are formed by fine carding, precision needle punching or appropriate hot rolling. In the introduction of two high-precision acupuncture production lines at home and abroad, the selection of high-quality fiber. Through the cooperation of different production processes and the matching of different materials, hundreds of different products are currently on the market.
    Among them are: geotextiles, geomembrane, enamel velvet, speaker blankets, electric blankets, cotton, embroidered cotton, cotton garments, Christmas crafts, human leather fabrics, special cloth for filter materials. Processing principle The production of non-woven fabrics by needle punching is entirely through a mechanical action, that is, needle piercing by a needle machine, and the fluffy webs are reinforced and cohesive to obtain strength.
   non woven manufacturing process
The web is repeatedly pierced with barbed barbs of triangular section (or other section) edges. As the barb passes through the web, the surface of the web and the inner fibers of the inner layer are forced into the interior of the web. Due to the friction between the fibers, the original fluffy web is compressed. When the needle is withdrawn from the web, the piercing fiber bundle exits the barb and remains in the web, so that many fiber bundles entangled the web so that it can no longer restore its original fluffy state. After many times of needle punching, a considerable number of fiber bundles are pierced into the web and the fibers in the web are entangled with each other to form a needle-punched non-woven material having a certain strength and thickness.
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