What is a PP cotton filter element?

What is a PP cotton filter element? When it comes to water purifiers, many users may have heard the 'PP cotton filter elementPP cotton filter element is a tubular filter element made of non-toxic and odorless polypropylene resin as a raw material, made of fiber, heated and melted, spinning, traction, and formed into a tubular filter element. If the raw material is mainly polypropylene, it can be called PP melt-blown filter element. Why is the PP cotton filter element always placed in the first level? The pore size of the PP cotton filter element is uniform and dense, and the PP cotton filter element is placed in the first level, mainly because it can first intercept the large particles of impurities in the tap water. And PP cotton has the following advantages, which is the reason why it is placed in the first stage to filter. In general, the advantages of PP cotton filter element are as follows: 1. Multi-layer deep structure, very large dirt holding capacity. The outer fiber of the PP cotton filter element is relatively thick, while the inner fiber is thinner, and the outer layer is relatively loose. It is compact, forming a multi-layer gradient structure with gradually tightening gradients. Each layer of this multi-layer structure can intercept and store impurities in the water, and when many layers add up, the dirt holding capacity will be very large. 2. It can effectively remove various particulate matter in the water. Water flows from the outside of the pp cotton to the inside. After layer by layer, the closer to the inner layer of the filter element, the smaller the pore size, the higher the filtration accuracy. When particulate impurities pass through the pores of the PP filter element, bridging will occur. Even particles smaller than the pores can be blocked. In this way, through the PP cotton, various particulate impurities in the filtered liquid are removed. 3. Chemical adhesive-free polypropylene is melt-blown, traction, and receiving technology, so that the polypropylene fibers rely on self-adhesion to entangle each other to form PP cotton filter elements of different shapes and sizes. The bonding of PP cotton filter element does not require other materials. As the chemical composition of PP is clean and meets food hygiene standards, it will not cause secondary pollution to the liquid to be filtered due to the material, and it is safer to use. 4. Large filtration flow and small pressure difference. The polypropylene fiber, the raw material of PP cotton, relies on self-adhesive entanglement to form a three-dimensional tortuous microporous structure, which is different from the fiber distribution in traditional fabrics and carded nonwovens. Larger specific surface area, higher porosity. The large surface area and many small holes can allow water to pass through the PP cotton quickly, without too much difference in the height of the inner and outer water, so not only the filtration flow is large, but the pressure difference is also small. 5. Good chemical stability, acid, alkali, organic solution, oil chemical stability of PP cotton is closely related to its raw material polypropylene. The chemical stability of polypropylene is very good, except that it can be corroded by concentrated sulfuric acid and concentrated nitric acid, it is relatively stable to various other chemical agents. In summary, the PP cotton filter element integrates surface, deep, coarse and fine filtration. It has the characteristics of large flow, corrosion resistance, and high pressure resistance. In addition, its cost is not very high, so it is widely used in water purification systems. , And in the water purifier is responsible for the water purification task of the 'first pass'. The quality of the PP cotton filter element is determined by the tightness of its fibers. The inner fibers of the high-quality PP cotton filter element are tight and uniform. The PP cotton filter element is the first-stage filter element of the water purifier, and more than 80% of the impurities will be filtered out at this level. The more impurities are filtered, the easier the filter element will be blocked.