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Production Process Of Needle Punched Non-woven Fabric

May 17, 2019

Process flow:

The first step of the needle-punched nonwoven fabric is made of polyester and polypropylene raw materials, which are carded, combed, pre-acupuncture and main acupuncture. The center is added with a mesh interlayer, and then double-passed, the air-laid acupuncture is combined into a cloth, and the rear pressure filter cloth has a three-dimensional structure and is heat-set.

After the second step of singeing, the surface is treated with chemical oil to make the filter cloth smooth and the pores are evenly distributed. The density of the product is good from the surface, and the surface of both surfaces is smooth and breathable, and it is on the plate and frame compressor. The proof of filtration can be used with high pressure and filtration accuracy up to 4 microns. Polypropylene and polyester can be supplied according to user needs.

Practice has proved that the non-woven filter cloth has better performance in the frame frame filter press: the coal slurry treatment in the coal plant and the wastewater treatment in the steel plant. Waste water treatment in brewery, printing and dyeing plant. If the filter cloth of other specifications is used, the filter cake will not dry and it will be difficult to fall off. After using the 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. Will fall off automatically. When selecting the non-woven filter cloth, the user mainly considers the non-woven filter cloth of different thickness and quality according to the air permeability, filtration precision and elongation. For the product parameters, please click the polyester needle felt and the polypropylene needle felt. Can be formulated.