Big bag emptying systems elevates ton bag to material inlet, breaking the ton bag outlet by manual, then opens flowrate control valve with vibrancy equipment to promote unloading powder or pellets into the lower hopper by gravity.Design capacity: 12bag/h; Big Bag Unloader Function and Features:Simple and reliable structure;Little power consumption;No damage and leakage for material;Convenient operation;Accessories for connection of dust collector;Accessories for connection of discharge valve.Big bag emptying is used in breaking and unloading big bag for dry powder or pellet material such as plastic pitch, carbon black and food additive in trades of plastic, rubber, food, medicine, chemical industries, and etc.