| 摘要 |
A pinch bottom open mouth ("PBOM") hag having a pinch bottom flap folded over upon and adhered to one wall of the bag, with a tab for tearing the flap open inserted at its inner end between the walls of the bag, folded to overlie the flap and the outside of the other wall and releasably adhered to the other wall, and a method of and apparatus for manufacturing the bags with the tabs from bag tubes wherein the tubes are continuously fed forward, one after another, tabs are applied to the tubes as the tubes travel forward and folded to overlie said other wall before the pinch closure flap is folded over, and wherein each tab is inserted between the walls of a tube by bringing the tab into a position overlapping said one wall and separating said one wall from the other to the point where the end of the tab slips off said one wall and becomes disposed between the walls. |
