the package could be carried out by alternative means as in the case of the pleating operation the cutting and folding stations could be of different form and alternative arrangements could be used to dispense the composite tape due consideration being given to the difficulties involved in handling self adhesive tape these problems are considerably facilitated by the present invention in which a non adhesive tape is used in conjunction with the adhesive tape since the composite tape will have non adhesive areas on both sides thus facilitating handling and permitting the use of such expedients as the co acting drive belts 76 and 78 acting on opposite sides of the tape the vacuum rollers 94 and 108 also permit advance of an adhesive tape with contact only being made with its non adhesive surface an alternative mode of advancing such adhesive tape into engagement with a package involves advancing the tape along a trough so that it assumes a laterally curved configuration in which it is to a degree self supporting the drive force being applied to the adhesive side of the tape by adhesive drive rollers although in the preferred embodiment of the invention the neck of the bag is folded once a similar tape seal may be applied to multiple folded bag necks although in this case the top edges of the bag will not be directly engaged by the tape the non adhesive tape could also be overlapped beneath the top edge rather than the bottom edge of the adhesive tape although this arrangement will usually be less satisfactory since on opening the tape will remain adhered to the main portion of the bag neck and will not assist in unfolding of.