Abstract: A method and apparatus for registration of a seal to a perforation on a plastic bag include a drum for forming a seal on a continuous plastic film and a downstream perforator/cutting station for forming a perforation on the film with respect to the location of the seal. The perforation is properly registered to the seal by sensing the seal location directly, with a seal sensor located near the perforator/cutting station.

Abstract: Folio reams are draped into discrete panels of paper or other wrapping material while in continuous motion along a horizontal path. The panels are fed from below so that the front, lateral and rear portions of each panel extend beyond the respective sides of the corresponding ream. The rear portions of successive panels are folded upwardly against the rear sides and thereupon forwardly against the top sides of the respective reams. The front portions of the panels are provided with films of adhesive and are folded upwardly against the front sides and thereupon rearwardly against the top sides of the respective reams so that their leaders overlie and are adhesively secured to the folded rear portions. The folding of front and rear portions is preceded by squaring of the reams and is followed by tucking and folding of front, rear and lateral portions of successive panels against the adjacent lateral sides of the respective reams.