Abstract: An apparatus for forming, filling and sealing a pre-formed bag has a top sheet and a bottom sheet. The bag has a leading edge seal, a trailing edge seal, a bottom edge seal and an open top edge with an upper portion extending therefrom. The apparatus includes a back plate, a slotted front plate disposed adjacent to the back plate. The slotted front plate and the back plate clamps a portion of the bag disposed below the top edge. The front and back plate extend from the trailing edge to the leading edge. A pair of gripping fingers clamp the leading edge and the trailing edge adjacent to and below the front plate. A pair of pins each have a distal end that moves from a first limit position to a second limit position. In the first limit position, the distal end of the pins are spaced from the bottom sheet. In the second limit position, the distal end of the pins penetrate through the bottom sheet and clamp the top sheet against the front plate.