Patent ID: 7172546

Claim:
An apparatus for sealing the bottom of a bag, comprising: a frame through which said bag is advanced in a longitudinal direction; a pair of edge grippers mounted on a gripper carrier movably mounted on said frame, said grippers being engageable with respective opposite edges of said bag, and movable away from each other for gripping and laterally pulling on said edges of said bag; a folding plate mounted on said frame for engaging said bag and folding an end portion of said bag to define a fold line; an adhesive applicator mounted on said frame for applying adhesive to the folded end portion of said bag; at least one pair of cooperating nip rollers for receiving said fold line of said bag; and a carrier drive for advancing said gripper carrier and said pair of edge grippers longitudinally of said frame to advance said fold line of said bag between said pair of cooperating nip rollers.