How does an automatic bag emptying machine work?

Dinnissen supplies discontinuous and continuous bag emptying machines:

In a discontinuous process, the bags are opened and emptied one by one in a closed cabinet. The bag is positioned manually or automatically on the cutting table of the machine. Then the door closes and the bag is cut in half. Then the tables flap in a vertical position for good emptying. For some products, the bag is also pre-cut along the length at the top. This gives the product more room to slide out of the bag when the tables are vertical. An air injection is an option to further improve emptying. After the bag has been emptied, it is released and falls into a shaft after which a worm compactor or baler can be placed.

In a continuous process, the bags are supplied with a conveyor belt and fall through a knife box with 2 to 6 rotating knives. The knife box cuts a bag into rings. Correct positioning of the bags and knives results in a higher emptying rate. Correct positioning of the bags and knives also results in a lower amount of residual pieces of packaging material. The cut bags end up in a rotating sieve basket where they repeatedly tumble around. Due to the rotation, the product falls through the coarse screen surface. Debris from the bag gradually moves to the outlet of the sieve basket and then falls onto a discharge conveyor or press.