The vertical granule back-seal packaging machine is a packaging device designed for granular materials. It adopts a vertical structure and achieves automated packaging through processes such as bag making, filling, sealing, and cutting. Its back-seal process forms a sealed line on the back of the packaging bag, which is compact in structure and has good sealing properties. It is suitable for materials such as beans, nuts, and feed pellets. It is widely used in industries such as food, chemicals, and agriculture, providing standardised and automated packaging solutions for granular materials.