The processing procedure of Needle punched non woven fabric:
It is made of polyester and polypropylene raw materials, which are carded, combed, pre-needle punched, and main needle punched. A mesh cloth interlayer is added in the center, and then double-layered, air-laid and needle-punched to form a cloth, and the filter cloth has a three-dimensional structure. The appearance is smooth, the micropores are evenly distributed, the density of the product is good from the surface, the surface of both sides is smooth and the air permeability is good, and it has been proved by the filter on the plate and frame compressor. 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 filtration: for example, coal slime treatment in coal preparation plants, and wastewater treatment in iron and steel plants. Wastewater treatment in breweries, printing and dyeing plants. If other specifications of filter cloth are used, the filter cake will not be pressed dry and it will be 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 when the filter frame 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 air permeability, filtration accuracy, elongation, etc.