The non-rotation of the hand wheel when the machine keeps running to secure the security of the operator. No need to adjust the height of worktops on both sides of the machine when you need to replace mould, no need to assemble or dismantle the material discharge chains and discharge hopper.
https://www.sedmachinery.com/outer-packaging-machine/cellophane-packing-machine/semi-automatic-cellophane-packing-machine.html