Method of recycling fibers from post-consumer nylon fabrics

A method of recycling fibers from post-consumer nylon fabrics, comprising:

• (S1) crushing a post-consumer nylon textile by using a two-stage crushing device to obtain crushed textiles;
• (S2) quantitatively and continuously feeding the crushed textiles to a two-stage screw machine with a preset length-to-diameter ratio through a feeder;
• transporting the crushed textiles to a compression zone, a melting zone, and a metering zone in sequence;
• and subjecting the crushed textiles to water cooling in a water-cooled device, air cooling, granulation, and drying to obtain first nylon fabric chips;
• (S3) repeating step (S2) to perform secondary granulation on the first nylon fabric chips to obtain second nylon fabric chips;
• (S4) feeding the second nylon fabric chips and a polyamide-6 masterbatch according to a weight ratio respectively into a composite core-skin screw for melting and mixing at a preset temperature to obtain a mixed melt;
• and
• (S5) metering and feeding, by a metering pump, the mixed melt into a spinning box followed by compounding in a spinning component to obtain a coated filament bundle with a skin-core structure;
• and ejecting the coated filament bundle through a slow-cooling heating zone for monomer suction followed by primary cooling by lateral blowing, cluster oiling, secondary cooling in a spinning channel, stretching and shaping, and winding to obtain the recycled fibers.