Needle-punched nonwoven production process and principle | JINHAOCHENG

The production process and principle of needle-punched non-woven fabrics. Speaking of non-woven fabrics, many friends know that it is a kind of cloth composed of fibers and has the same properties as cloth, but it has some characteristics that real cloth does not have. , that is, the material of this non-woven fabric is composed of polypropylene, and it can be moisture-proof, difficult to tear, etc. A series of characteristics that real cloth does not have, so today I will introduce how to make this non-woven fabric , one of the methods is the knitting method, which is to crochet the non-woven material with a needle. The following editor will talk about the production process and principle of needle-punched non-woven fabrics in detail.

Needle Punched Nonwoven Factory Recommended

Process flow:

The first step is needle-punched non-woven fabrics, which are made of polyester and polypropylene raw materials. After carding, combing, pre-acupuncture, and main acupuncture. The center is interlayered with mesh cloth, and then double-passed, air-laid and needle-punched to form a composite cloth. Afterwards, the filter cloth has a three-dimensional structure and is heat-set.

After the second step of singeing, the surface of the filter cloth is treated with chemical oil to make the surface of the filter cloth smooth and the micropores distributed evenly. From the surface, the product has a good density, both sides are smooth and air-permeable. On the plate and frame compressor The use of filtration proves that high-strength pressure can be used, and the filtration accuracy is as high as within 4 microns. Two raw materials, polypropylene and polyester, can be provided according to user needs.

Practice has proved that non-woven filter cloth has better performance in plate and frame filter press: for example, coal slime treatment in coal preparation plant, wastewater treatment in iron and steel plant. Wastewater treatment in breweries and printing and dyeing factories. If filter cloths of other specifications are used, the filter cake will not dry under pressure and is difficult to fall off. After using non-woven filter cloth, the filter cake will be quite dry when the filter pressure reaches 10kg-12kg, and the filter cake will be quite dry when the filter is opened. will fall off automatically. When users choose non-woven filter cloth, they mainly consider non-woven filter cloth of different thickness and quality according to the air permeability, filtration accuracy, elongation, etc. For product parameters, please click polyester needle felt and polypropylene needle felt. The specifications and varieties are all Can be made.

Acupuncture non-woven series products are formed by fine carding, multiple times of precision needle punching or appropriate 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 in the market.

The main ones are: geotextile, geomembrane, halberd flannelette, speaker blanket, electric blanket cotton, embroidered cotton, clothing cotton, Christmas crafts, artificial leather base cloth, filter material special cloth. Processing principle The use of acupuncture to produce non-woven fabrics is entirely through a mechanical action, that is, the needle puncture effect of the acupuncture machine, to reinforce and cohere the fluffy fiber web to obtain strength.


Use the thorn with barb on the edge of triangular section (or other section) to puncture the fiber web repeatedly. When the barb passes through the web, the surface of the web and some inner fibers are forced into the interior of the web. Due to the friction between fibers, the original fluffy web is compressed. When the needle exits the fiber web, the inserted fiber bundles break away from the barbs and remain in the fiber web. In this way, many fiber bundles entangle the fiber web so that it cannot return to its original fluffy state. After many times of needle punching, a considerable number of fiber bundles are pierced into the fiber web, so that the fibers in the fiber web are entangled with each other, thus forming a needle-punched nonwoven material with a certain strength and thickness.

Huizhou JinHaoCheng Non-Woven Fabric Co., Ltd is founded in 2005, located in Huiyang District, Huizhou City, Guangdong Province, which is a professional non woven production-oriented enterprise with 15-years history. Our company has realized fully automated production which can reach a total annual production capacity to 10,000 tons with 12 production lines in total. Our company had obtained ISO9001 quality management system certification in 2011, and was rated as "High-tech Enterprise" by our nation in 2018. Our products are widely penetrated and used in various fields of today's society, such as: filter materials, medical and health care, environmental protection, automobiles, furniture, home textiles and other industries.

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Post time: Dec-05-2022
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