The polypropylene melt blown filter element, also known as pp melt blown filter cartridge, is the most widely used precision filtering component in water treatment, chemical industry, electronics and other fields. It is made of food-grade polypropylene and is formed through high-temperature melting, high-speed spinning, fiber entanglement and solidification. With its unique gradient physical structure and stable technical parameters, it achieves efficient deep filtration and has outstanding advantages such as large pollutant capacity, low resistance and corrosion resistance.
In terms of physical structure, the spun depth filter cartridge adopts a radial gradient microporous structure, which is different from ordinary homogeneous filter elements. It is an integrated tubular structure without splicing gaps or chemical adhesives, and its structure is stable and not prone to deformation. The filter element presents a gradually changing morphology from coarse outer fibers with loose pores to fine inner fibers with dense pores, with fiber diameters concentrated in 1-4 micrometers and an overall porosity of over 75%. This gradient structure can achieve layered filtration. The outer layer intercepts large particles such as sand and suspended solids, while the inner layer precisely captures fine pollutants, effectively avoiding rapid clogging of the filter element and significantly extending its service life. The standard lengths of the filter element are 10 inches, 20 inches, 30 inches and 40 inches, with an inner diameter of mostly 28 mm. The specifications are standardized, suitable for various conventional filtering equipment.
Stable and comprehensive technical parameters are the core guarantee for the efficient operation of polypropylene melt blown filter cartridge. Its filtration accuracy covers 0.5 μm to 60 μm, with mainstream accuracies of 1 μm, 5 μm, 10 μm and 20 μm, meeting the needs of various filtration scenarios such as coarse filtration and fine filtration. It has excellent acid and alkali resistance, applicable to pH ranges of 1-13, and can be adapted to the vast majority of acid and alkali water and industrial fluids, with extremely strong adaptability.
In terms of operating parameters, the pp spun filter cartridge works at a temperature lower than 70°C (under 0.25 Mpa conditions), can withstand 126°C high-temperature steam sterilization for 30 minutes, meeting the aseptic processing requirements of the pharmaceutical and food industries. The maximum forward pressure difference can reach 0.4 Mpa, with good pressure resistance, and it is unlikely to deform or break during operation. Furthermore, the filter element is made of pure polypropylene virgin material, which is non-toxic, odorless, and has excellent hydrophilic properties. The filtration process does not cause secondary pollution and fully complies with the hygiene standards and usage requirements of high-end industries such as water purification and food processing.
In conclusion, the unique gradient layered physical structure of melt-blown filter element endows it with excellent deep retention and anti-blocking filtration performance. The comprehensive and stable technical parameters ensure the reliability and scene versatility of the equipment operation. The perfect adaptation of the structure and parameters makes it an extremely cost-effective basic filter component in the industrial filtration and domestic water purification fields, with irreplaceable application value.