Filter Press Cloth Material and Efficacy

Jan 11, 2023

PP Right for My Application

Filter press cloths generally fabricated from woven or needled felt fabrics. The fabrics generally consist of:
(1)、Cotton
(2)、Aramid
(3)、Polypropylene
(4)、Polyester
(5)、PTFE
(6)、Nylon
Filter press cloths are available in a variety of materials form the standard oxford weave to the quick-release, mono-multifilament.
The fabric that is most commonly used is polypropylene. However, polyester is also available.

Filter Cloth for Filter Press Efficacy
Filter press cloths are an effective filtration medium that may filter particulates in a wide range of different micron ratings, often between 5 microns to 25 microns, depending on the contaminants being filtered.
The clothes fit between filter press plates, sometimes also called frame filter presses or simply plates.
The number of plates used for filtration varies significantly based on the required specifications of the application.
For example as few as 4 plates up to as many as 200 plates may be used. The filter press cloths trap the contaminants in solid batches known as filter cakes.

Select Filter Press Cloth:

  1. Filter Cake Release: The release efficiency of filter cake directly affects the working efficiency of filter press equipment. The surface of the filter cake is smooth and non sticky, and the filtrate will quickly leach out of the filter cloth, with high filtration efficiency. In this case, it is necessary to choose single silk filter cloth or satin filter cloth.
  2. Filtrate Acidity and Alkalinity: Select the appropriate type of filter cloth according to different acidity and alkalinity. Polyester filter cloth has the strongest acid resistance and vinylon filter cloth has the strongest alkali resistance. Polypropylene filter cloth is both acid and alkali resistant.
  3. Filter Cake Shape: Consider the wear resistance of filter cloth according to whether the particles are uniform and whether the shape is hard. The polyester filter cloth and nylon filter cloth is best wear resistance.
  4. Filter Material Temperature: The temperature is a major factor affecting the working efficiency of filter press cloths. The polyester filter cloth is most temperature resistant.