The PP melt-blown filter cartridge is a tubular filter element crafted from non-toxic and odorless polypropylene particles through a process involving heating, melting, spinning, drawing, and shaping. Below is a detailed introduction to the PP melt-blown filter cartridge:
I. Product Features
Material & Structure:
Made from polypropylene (PP), it is non-toxic and odorless.
Structurally, it comprises a double-layer fiber construction with a dense inner fiber layer and a coarse outer fiber layer, forming a gradually tapering and tightening structure. The outer fibers are coarse and loosely packed, while the inner fibers are fine and tightly woven.
The fibers possess a small diameter, typically ranging from 5 to 25 microns, with most fibers measuring between 1 and 4 microns. This creates a three-dimensional microporous structure characterized by small pore sizes and high porosity, with an average pore size of less than 40 microns and an average porosity of 75% or more.
Filtration Performance:
Offers high filtration accuracy, achieving various precisions such as 1μm, 3μm, 5μm, 10μm, 20μm, 30μm, and 60μm.
The filter cartridge boasts uniform pore density and a filtration efficiency exceeding 99%.
Possesses both deep filtration and surface filtration capabilities, effectively retaining and removing solid particle impurities from fluids.
Durability:
Resistant to mold, acids, alkalis, and organic or inorganic solvents (excluding chlorosulfonic acid, concentrated nitric acid, and strong oxidants).
High strength ensures the filter cartridge remains undeformed even when the differential pressure between the inlet and outlet exceeds 0.4Mpa. Additionally, filtration efficiency remains unaffected at temperatures exceeding 90°C.
Other Characteristics:
Exhibits excellent chemical compatibility, suitable for filtering strong acids, alkalis, and organic solvents.
High dirt-holding capacity, long service life, and low cost.
High self-cleanliness, ensuring no contamination to water quality.
The unique gradient deep filtration creates a three-dimensional filter residue effect, featuring high porosity, high retention rate, large dirt-holding capacity, high flow rate, and low-pressure drop.
II. Manufacturing Process
The manufacturing process of the PP melt-blown filter cartridge primarily involves heating and melting, spinning, drawing, and shaping. This process enables polypropylene particles to form continuous long fibers, which intertwine and adhere to each other randomly in space, forming a three-dimensional microporous structure.
III. Application Fields
Due to its superior filtration performance and durability, the PP melt-blown filter cartridge has found widespread applications in various industries, including:
Pharmaceutical Industry: Pre-filtration of various injections, medicinal liquids, and injection bottle rinsing water; pre-filtration of large-volume infusions, antibiotics, and traditional Chinese medicine injections.
Food Industry: Filtration of alcoholic beverages, beverages, and drinking water.
Electronic Industry: Pre-filtration of pure water and ultrapure water.
Petroleum & Chemical Industry: Filtration of various organic solvents, acids, and alkalis; oilfield water injection filtration, etc.
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