Bolian Filtration Solutions Co., Ltd.

Affects of filter cloth raw materials on filtration effect

The vertical filter press cloth for a fully-automatic press filter. based on the fiber structure, has three types: staple yarn, filament, and monofilament. The filtration effect of different filter fabrics varies depending on the surface smoothness of the raw materials. A comparison of the filtration effect of different filter fabrics is as follows.

staple yarn

Advantages: It can weave filter cloth with high filtration accuracy, which is

favorable for filter material adhesion.

Disadvantages: Poor cake release and stiffness, and blockage issue.

chemical filament

Advantages: It can weave high-accuracy filter cloths, which has good dimensional stability and good stiffness after heat-setting, as well as easy cake release.

Disadvantages: Gaps between fibers may adsorb finer particles during the filtration process, causing blockage.


Advantage: Since filaments do not have pores and grooves, as long as the particle size is smaller than the woven pore size, most will pass through smoothly. After calendering, the filtration precision can be improved, and the surface is smooth for easy cake release.

Advantages: Relatively, it is difficult to achieve high filtration accuracy and good flexibility.


The filtration cloth should vary depending on different filtration equipment and filtering materials. For fully automatic vertical press filters, it is suitable to use multifilament filter cloth with high filtration accuracy, easy cake release, high strength, and dimensional stability. For sticky filtering materials, monofilament filter cloth can be used. The weft can be woven with multifilament to meet the required filtration accuracy. Manufacturers specializing in these sophisticated textiles, such as filter press cloth manufacturers, offer a range of solutions tailored to varying industrial needs.

The warp threads of multifilament filter cloth have three forms: untwisted, single twist, and folded twist. Untwisted threads can only weave filter cloth with low density and filtration accuracy, which is rarely used. The filter cloth woven with single-twisted yarns has a smooth surface, high filtration accuracy, and easy cake release. However, it has poor stiffness and dimensional stability, making the choice of material crucial for specific applications. For these specialized requirements, products like filter cloth roll provide a variety of options to suit different filtering needs.

On the other hand, the filter cloth woven with folded twisted yarns has good stiffness, dimensional stability, and high strength. But it is easy to clog and has poor cake release, highlighting the need for specific types of filter cloth like the larox filter cloth, which is designed to address these challenges, offering enhanced performance for certain filtration systems.