Patent ID: 6991592

Claim:
A method of folding a bag, the method comprising: (a) providing an unfinished flat bottom bag having a sleeve defining a longitudinal direction and a transverse direction, the bag comprising a mouth end and a bottom end and longitudinal gussets extending from the mouth end to the bottom end, the bottom end having an unfinished base portion; (b) opening the unfinished base portion and extending the gussets transversely while the unfinished base portion is stationary; (c) forming a crease between an end-most portion of the bottom end while the unfinished base portion is moving continuously in the transverse direction; (d) forming a fin extending transversely across the unfinished base portion by sealing the end-most portion of the bottom end while the unfinished base portion and the fin are being moved continuously in the transverse direction; and (e) folding a first end and a second end of the fin against the unfinished base portion while the unfinished base portion is moved continuously in the longitudinal direction to form a base.