Airbag module on seat back

Disclosed are airbag modules (10) for a passenger seat(14) having a seat back (18), a container (20) coupled to the seat back: wherein the container includes at least one airbag (12) in an undeployed state, and a structure (44) positioned aft of the seat back, wherein the structure includes a recess or opening (52) configured to receive the at least one airbag in a deployed state; structure may have a breakable area (56) positioned aft of the recess; wherein breakable area is configured to form an opening in a structure aft surface (50); when a force is applied by the at least one airbag in a deployed state.