When we buy filter cloth. Identification filter cloth, we must first understand the filter cloth several major technical indicators. More practical density, thickness and weight, air permeability. The following four points summarize the requirements to identify the filter cloth.
1 touch: where the staple fiber such as 208,729 as plush, soft. 734,747,758,3927 are made of the same kind of raw materials, but the thickness of different density only. 3927 very rough, strong, not soft. Softness, and roughness need you to hold the sample a little bit of touch, write down. Speaking is not clear. Density is a touch by hand, while the best number, 10cm have a few wires. The corresponding filter cloth specifications have their own density factor, as long as the control can be roughly identified.
2 and then said: One of the major is the determination of the thickness of the filter cloth, it is best to take a small piece of it.
Polyester burned to smoke black, polypropylene burning up and shiny. The other is not allowed to burn, hard to say.
4 Look: In general, large chemical fiber cloth white, shiny good. Small chemical fiber filter cloth darker, gray, long fiber cloth, smooth surface, good gloss, surface with short fibers on the cloth. There are twill, plain, these lines, can also help you determine the model.
(Addtime：2018-1-25)
