What is the seal for medical waste in double-layer packaging bags?

Goose neck knot

Medical wastes should be packed in double-layer packaging bags with gooseneck sealing and layered sealing. Only in this way can the garbage be sealed tightly.

Goose neck sealing is to twist the plastic bag mouth into a spiral strip in one direction, and then tie it tightly with a tie to form an effective seal similar to goose neck.