Micropore folding filter element

The utility model discloses a micropore folding filter element which comprises a polypropylene shell, a polypropylene core column, an inserting opening and supporting rings, an air outlet hole is formed in the outer side of the polypropylene shell, the supporting rings are arranged in the polypropylene shell at equal intervals in a sleeved mode, and the polypropylene core column is installed between the supporting rings through installation holes. A polypropylene downstream supporting layer, a filtering layer and a polypropylene upstream supporting layer are sequentially arranged between the polypropylene core column and the polypropylene shell from inside to outside; the folding filter element serving as the filter element with high filtering precision is mainly made of a polypropylene high polymer material and is good in chemical compatibility such as acid resistance and alkali resistance, a unique hot melting welding processing technology is adopted in the production process, a 100% brand-new PP injection