APPARTUS FOR, AND METHOD OF, PRODUCING A BAG FROM PAPER, AND PAPER BAG

摘要

A bag machine for production of bags made of paper material includes an unwinding device to unwind and feed paper material in a transport direction (x), a device to produce weakening lines partially offset in direction (x), so that a first wall of the bag continues in at least one tab that extends beyond a second wall, a tube-forming device, in which side areas are folded to form an overlapping area, a separation device to separate tube sections along the weakening lines, and a bottom formation device, in which areas of a leading end of the tube section are folded and fastened onto an outer wall thereof. The machine has a device for application of adhesive surfaces to the paper material, with which an adhesive surface is applied to an area of the paper material that represents the side of the tab facing the second wall in the finished bag.

主权项

1. A bag machine for production of bags made of paper material, comprising;
an unwinding device to unwind and feed the paper material in a transport direction (x); a device for producing weakening lines, such that portions of the weakening lines are offset relative to each other in the transport direction (x), so that a first wall of a finished bag continues in at least one tab, which extends beyond a second wall thereof; a tube formation device to form a tube, with which the side areas of the sheet are folded and joined to each other to form an overlapping area; a separation device to separate a tube section along the weakening lines from the tube; a bottom formation device, which areas of a leading end of the tube section are folded and fastened to an outer wall of the tube section; and a device for applying an adhesive surface to the paper material, the adhesive surface being applied to an area of the caper material that represents a side of the tab facing the second wall in the finished bag, the device for applying the adhesive surface being located upstream, in the transport direction (x) of the tube formation device.