Needle-punched non-woven fabric: It is a kind of dry-laid non-woven fabric. Needle-punched non-woven fabric uses the puncture effect of the needle to strengthen the fluffy web into a cloth.
Needle-punched non-woven fabrics are made of polyester and polypropylene materials, and are carded, combed, pre-acupuncture and main acupuncture. The center is sandwiched with a mesh cloth, and then double-passed. The air-laid net is needle-punched to form a cloth. The post-press filter cloth has a three-dimensional structure. After heat setting, after singeing, the surface is treated with chemical oil to make the filter cloth. The appearance is smooth, the pores are evenly distributed, the density of the product is good from the surface, the surface on both sides is smooth and the air permeability is good, it is proved that the filter is used on the plate and frame compressor, high pressure can be used, and the filter accuracy is up to 4 microns, according to the user Need to provide two raw materials of polypropylene and polyester. Practice has proved that the performance of non-woven filter cloth is better when it is pressed by plate and frame: for example, slime treatment in coal preparation plant, wastewater treatment in iron and steel plant, wastewater treatment in brewery and printing and dyeing plant. If other specifications of filter cloth are used, filter cake pressure will appear The problem is not dry and difficult to fall off. After using non-woven filter cloth, the filter cake will be quite dry when the pressure of the filter reaches 10kg-12kg, and the filter cake will automatically fall off when the filter is opened. When the user selects the non-woven filter cloth, the non-woven filter cloth of different thickness and quality is mainly considered according to the air permeability, filtration accuracy, elongation, etc. For the product parameters, please click the polyester needle felt and polypropylene needle felt. Can be formulated.
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