Needle-punched non-woven fabric processing procedure, processing principle | JINHAOCHENG

Non-woven fabric breaks through the traditional textile principle, and has the characteristics of short process flow, fast production rate, high output, low cost, wide use, and multiple sources of raw materials.

Needle-punched non-woven fabrics are a kind of non-woven fabrics, which are made of polyester, polyester, and polypropylene raw materials, and are processed through multiple needle punching and proper hot pressing. According to different processes, with different materials, tens of thousands of products are made, which are used in all walks of life, and products of various specifications can be customized according to different purposes.

Processing program
It is made of polyester and polypropylene raw materials and is carded, combed, pre-needled, and mainly needled. The center is interlayered with mesh cloth, and then through double nucleation, air-laid and needle-punched composite cloth, the post-press filter cloth has a three-dimensional structure. After heat setting and singeing, the surface is most treated with a chemical oil agent to make the filter cloth The surface is smooth, and the micropores are evenly distributed. From the surface, the product has good density, smooth and air-permeable surfaces on both sides. It is proved that the filter on the plate and frame compressor can use high-strength pressure and the filtration accuracy is up to 4 microns. Need to provide polypropylene and polyester two kinds of raw materials. Practice has proved that non-woven filter cloth has better performance in plate and frame filter press: for example, slime treatment in coal preparation plants and wastewater treatment in iron and steel plants. In the brewery, printing and dyeing plant wastewater treatment. If the filter cloth of other specifications is used, the filter cake will not be dry and difficult to fall off. After using the non-woven filter cloth, the filter cake will be quite dry when the filter pressure reaches 10kg-12kg, and the filter cake will be opened when the filter is framed. It will fall off automatically. When users choose non-woven filter fabrics, they mainly consider non-woven filter fabrics of different thickness and quality according to air permeability, filtration accuracy, elongation, etc., product parameters, please click polyester needled felt and polypropylene needled felt, specifications and varieties are all Can be formulated.

The series of needle punched non-woven fabrics are formed through fine carding, multiple precision needle punching or proper hot rolling. On the basis of introducing two high-precision acupuncture production lines at home and abroad, high-quality fibers are selected. Through the coordination of different production processes and the combination of different materials, hundreds of different products are circulating on the market, mainly including: geotextile, geomembrane, velvet cloth, speaker blanket, electric blanket cotton, embroidered cotton, clothing cotton, Christmas crafts , Human leather base cloth, special cloth for filter material.


Processing principle
The production of non-woven fabrics by acupuncture method is completely through a mechanical action, that is, the puncture action of the needle puncture machine, which strengthens the fluffy fiber web and obtains the strength. The basic principle is:
Use triangular cross-section (or other cross-section) edges with barbed thorns to repeatedly puncture the fiber web. When the barbs pass through the web, they force the surface and local inner fibers of the web to penetrate into the interior of the web. Due to the friction between the fibers, the original fluffy web is compressed. When the felting needle exits the fiber web, the pierced fiber bundles detach from the barbs and stay in the fiber web. In this way, many fiber bundles entangle the fiber web so that it can no longer restore the original fluffy state. After many times of needle punching, a considerable number of fiber bundles are pierced into the fiber web, making the fibers in the fiber web entangled with each other, thereby forming a needle punched nonwoven material with a certain strength and thickness.

Needle-punched non-woven process forms include pre-needling, main-needling, pattern needling, ring needling and tubular needling.

For professional knowledge and consultation on Melt-blown Non woven Fabric, Non-woven Finished Product, Spunlace Nonwoven Fabric, Filter Nonwoven Fabric, Felt-Needle-punched Nonwoven, you are welcome to contact Jinhaocheng Nonwoven Fabric. We will do our best to serve you.
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Post time: Jul-16-2021
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