| 摘要 |
A system for handling zipper-equipped wrapper sheet material to be used in a form, fill, and seal machine for wrapping product enables the wrapper sheet to be drawn from a supply with a flap sheet portion overlying a panel sheet portion and subsequently disposing the flap sheet portion such that it is folded back away from the panel sheet portion to fully open up the wrapper sheet material. The folding over of the flap sheet portion brought about by apparatus which permits continuous flow of wrapper sheet to the form, fill, and seal machine at conventional machine high speed production rates. The system is made adjustable to handle zipper-equipped wrapper sheet material of various sizes. Devices are included to ensure proper tensioning of the line of wrapper sheet material passing to the form, fill, and seal machine. |
