The PP yarn wound filter machine produces a PP yarn wound filter. The structure of the filter core is thick in the outer layer, the inner layer is fine, the outer layer is loose, and the inner layer is tightly tapered. The unique gradient deep filtration forms a three-dimensional filter residue effect, featuring high porosity, high rejection rate, large dirt holding capacity, large flow rate and low pressure drop.
The PP yarn wound type filter machine adopts a process of extruding a polymer into a non-woven process. In theory, any thermoplastic polymer chip material can be used in the production process. Polypropylene is the most used slice material for the production process of PP yarn wound filter.
In addition, the polymer slicing materials commonly used in the PP yarn wound filter process are polyester, polyamide, polyethylene, polytetrafluoroethylene, polystyrene, PBT, EMA, EVA, and the like. The olefin polymer raw material (such as polypropylene) has a high degree of polymerization, so that the heating temperature is higher than the melting point of 100 ° C to be melted at a higher temperature, and the polyester heating temperature is slightly higher than the melting point of the melt blowing. Olefinic feedstocks generally do not require drying.