Visual inspection of filter cloth is the easiest way to identify fibers. He distinguishes cotton, linen, silk, etc. and chemical fibers according to the appearance and mental characteristics of fibers such as length, thickness, curl, color, and feel. The hand-feel visual identification method is highly subjective, and requires the operator to have rich professional knowledge and experience, and to master the sensory characteristics of various fibers.

To identify the filter cloth, it is necessary to first understand several main technical indicators of the filter cloth. The main ones are density, thickness, weight, air permeability, breaking strength and so on. The more practical ones are density, thickness and weight, and air permeability.

1. Look first. In terms of (the color of the filter cloth), the large chemical fiber filter cloth is white and has a good luster. The small chemical fiber filter cloth is dark and gray, and some filter felts, such as Nomex, are yellowish in color. (Gloss of filter cloth) Long fiber filter cloth, smooth surface, good gloss, short fiber filter cloth surface with hair. (The texture of the filter cloth) There are also twill, plain, these textures can also help you judge the model. Because some specifications have different textures, the specifications will also be different.

2. Touch again. (Softness) Among them, the short fibers such as 208 and 729 are soft like plush cloth. 734, 747, 758, 3927 are all woven from the same material, but the thickness and density are different. 3927 is very rough, firm, not soft. Softness and roughness require you to touch the sample little by little and write it down. Speaking is not clear. (Density) One is to touch the density by hand, and it is best to count it. There are several wires in 10cm. The corresponding filter cloth specifications have their own density coefficients, which can be roughly identified as long as they are compared.

3. Rename. The main one is to measure the thickness of the filter cloth, it is best to take a small piece and weigh it (gram weight per square meter).

4. Burn again. Among them, polyester fires black smoke, and polypropylene fires blue light. Others are not allowed to burn, it is hard to say.

5. The above are some technical opinions. From the perspective of thinking, our order is to first determine whether it is a woven fabric, and then determine the material (polyester, polypropylene or what), and then make a rough judgment on the length and staple fiber and texture. Then comprehensively determine the filter cloth type according to the technical indicators of the thickness, density and gram weight of the filter cloth. Of course, the premise is that you have a rough specification sheet for the corresponding model.

Changzhou Xiahua Environmental Protection Technology Co., Ltd. specializes in the production and operation of industrial filtration materials for many years, mainly in the chemical industry, and the products are exported to many countries. Xiahua mainly produces the filter cloth, filter bag, pressure filter bag, etc., Xiahua filter cloth, use heart!