The difference between the upper seam of the filter bag and the upper circle of the hot melt

The upper seam of the seam: it is a more traditional upper circle mode. Since the needle of the sewing machine needs to penetrate the mouth of the plastic rubber ring, if the penetration is too compact, the ring mouth is easy to fall off during work, and the penetration is too sparse, which may cause the filtrate to leak out.

Hot-melt upper ring: The hot-melt technology is used to perfectly fit the non-woven fabric and the plastic apron. This welding process has a particularly good sealing performance, which solves the phenomenon of liquid leakage filtration and is a  new breakthrough of the solution to the treatment of the filter bag ring.

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