Production process for preparing spun-bonded non-woven fabric by recycling polypropylene fast food box

The invention discloses a production process for preparing spun-bonded non-woven fabric by recycling polypropylene fast food boxes. The production process comprises the following steps: step 1, physically screening waste food boxes, crushing and removing impurities; and step 2, carrying out chemical modification treatment on the recycled polypropylene particles, including remodeling and deodorizing a polypropylene structure by using a chemical reagent, so that the mechanical property and the ductility of the polypropylene particles are improved, and the treated meal box is suitable for being used as a raw material of a non-woven fabric. 3, the modified polypropylene is subjected to screw melting, spinning lapping, hot rolling forming and other processes, a spun-bonded non-woven fabric finished product capable of recycling polypropylene can be obtained, the high-quality non-woven fabric is obtained by recycling waste polypropylene meal boxes and conducting secondary resource utilization, development of circula