The back sealing bag adopts hidden vertical sealing edge to ensure the integrity of the packaging front pattern. In the packaging design process, the bag body pattern can be set as a whole to keep the picture coherent, delicate and beautiful. The sealing is on the back, which makes the bearing capacity of both sides stronger, and reduces the possibility of packaging damage.
Finally, the back sealing bag can effectively reduce about 40% of the cost and consumption of packaging materials, cost advantage is obvious.