The membrane is the core of the membrane folding filter core, the center rod and the end cover of the filter core are processed by hot welding technology, without any glue, no leakage and no two pollution. According to the material, the foldable filter core can be divided into PP polypropylene foldable filter, PTFE polytetrafluoroethylene foldable filter, PES polyethersulfone foldable filter and nylon folding filter. Today we will learn the difference between the materials of these folded filter elements.

PP polypropylene foldable filter core, as a kind of relatively accurate, prefilter filter core material (very cheap), it can only intercept large colloid, particle type, its role is to prevent large particles, such as blocking terminal filter membrane, the end of the terminal filter play a protective role. However, it has strong adsorption capacity and large amount of pollutants. This is not achieved by PES and PTFE. As a kind of material with relative accuracy, the size of its aperture is of little significance.

PTFE polytetrafluoroethylene foldable filter, which can be divided into hydrophilic PTFE and hydrophobic PTFE, hydrophilic filtrating liquid and hydrophobic filter gas, can be divided into casting film and continuous casting mould according to the casting process. Due to the unique four F atom carbon structure of PTFE, the material has strong chemical stability, strong acid resistance, strong alkali resistance and organic solvent resistance. The PTFE material itself is hydrophobic, and the hydrophilic PTFE is treated. Therefore, the flux of hydrophilic PTFE membrane is relatively poor. Finally, PTFE is an absolute precision filter membrane, which can be used to remove bacteria from the terminal liquid and remove bacteria from the gas.

PES polyethersulfone foldable filter core is the advanced polyethersulfone microfiltration membrane in the world. The pore opening rate of more than 80% of the Kong Zhan membrane membrane of polyethersulfone membrane membrane has a unique micropore geometry, which improves the filtration efficiency and circulation of the difficult filtration solution. Polyethersulfone and polypropylene support are used to form two kinds of materials, which are made up of hot melt and non cohesive substances. They are suitable for chemical and pharmaceutical industries which require more stringent requirements. The main characteristics: unique hydrophilic properties, without surface active agent and surface lubricant, provide high level of filtration precision and circulation for filter solution, wide range of application PH, low adsorption capacity for protein and precious biological agents, high retention rate, excellent chemical tolerance and thermal stability, good strength, positive resistance and resistance. Reverse pressure shock.

Nylon foldable filter core is a hydrophilic nylon microporous membrane, which is heated by two combinations of nylon and polypropylene, without adhesive and fiber. It is suitable for the chemical and pharmaceutical industries with strict requirements. Main characteristics: stable hydrophilic property, strong flexibility, high rejection rate, excellent chemical tolerance, especially suitable for filtration of organic solvents. Resistance to positive and reverse pressure shocks.

These foldable filters have excellent chemical compatibility. They are suitable for filtering strong acid, strong alkali and organic solvents. The membrane filter area is large, the pressure difference is low, the pollution ability is strong, the service life is long and so on. The user can choose the suitable material according to the needs.