Packaging machine

An apparatus for making packages, comprising:

• an indexing mechanism configured to receive a web of connected bags, wherein the indexing mechanism is configured to move the web of connected bags along a first path of travel, and wherein the indexing mechanism is configured to reverse index the web of connected bags along a second path of travel that is opposite the first path of travel;
• an engagement device, the engagement device comprising:
• a first pair of grippers movable between an open position and a closed position, wherein the first pair of grippers are configured to grip a first ply of the bag when in the closed position;
• a second pair of grippers movable between an open position and a closed position, wherein the second pair of grippers are configured to grip the first ply of the bag when in the closed position, wherein the second pair of grippers are spaced apart from the first pair of grippers;
• a third pair of grippers;
• a fourth pair of grippers, wherein the third pair of grippers and fourth pair of grippers are movable relative to each other;
• wherein movement of the third and fourth pair of grippers toward each other when the first pair of grippers and the second pair of grippers are gripping the first ply of the bag causes a second ply of the bag to slide between the third pair of grippers and the fourth pair of grippers such that the opening of the bag has a rectangular shape;
• and
• a sealing member configured to seal the opening of the bag.