Sewing loop:
It is a more traditional mode of looping. Since the needle of the sewing machine needs to penetrate the mouth of the plastic rubber ring, if the penetration is too tight, the ring will easily fall off during work, and the penetration is too sparse, which will cause the filtrate to leak
Hot-melt upper ring:
using hot-melt technology, the non-woven fabric and the plastic apron are bonded together. This welding process has particularly good sealing performance, solves the phenomenon of liquid leakage, and is a new breakthrough in solving the treatment of the filter bag ring.