IEDCO, Turnersville, N.J., developed bulk bag unloaders with a bulk bag deflation system that provides containment while allowing the operator to compact empty bulk bags.

These bulk bag unloading systems create a dust-tight seal when the bulk bags are connected to the integral flange and lowered onto the inlet rim of the unloader. Once the dust-free discharging is complete, the operator may compact the empty bag with the bulk bag deflation system. This compacts an empty bulk bag while connected to an in-house dust collection system to eliminate the pluming of dust when bags are manually crushed after emptying.

Pneumatically controlled valves divert the dust collection suction from either the spout access and seal enclosure or the bag deflation system.