Device For The Production Of Tubular Bags

Abstract

A device for producing tubular bags filled with bulk goods from continuous foil tubes. The device includes a pair of sealing tools that seal or weld the foil tubes in bag-length intervals. A pair of closing bars connected to the sealing tools are biased toward each other and press the foil tubes before the sealing tools are closed. A stripper is provided to remove the residue of the bulk goods from the area of the seal by a wiping motion in the direction of bag movement through the device. The closing bars are connected to the stripper so that through a closing movement of the closing bars, the stripper is pulled along in the run direction of the foil while touching the foil to strip the area to be sealed before the sealing tools close.

1 - 19 . (canceled)  
   
   
       20 . A method of producing tubular bags filled with bulk goods from a continuous foil tube moving in a run direction comprising: 
 moving a pair of tool mounts in an orbital movement, wherein the tool mounts have a near end and a distal end;    moving a first pair of opposing tools, each mounted on one of the pair of tool mounts, cyclically to engage the tube and seal the foil tube in bag-length intervals during a portion of the orbital movement;    moving a second pair of opposing tools, each mounted on one of the pair of tool mounts, and removing bulk goods from the area of the seal by a wiping motion effective in the run direction, and following a path responsive to the orbital path; and    using a pair of opposing passive devices, each mounted near the distal end of each tool carrier, during at least part of the portion of the orbital movement, to affect the path of a selected pair of the first and second pairs of tools such that the distal end of the selected pair follows a path parallel to a path the near end of the selected pair follows.    
   
   
       21 . The method of  claim 20 , wherein using is performed during at least all of the portion of the orbital movement.  
   
   
       22 . The apparatus of  claim 20 , wherein using is performed during at least the time the tube is engaged.  
   
   
       23 . The apparatus of  claim 20 , further comprising linking the pair of passive devices is linked to the second pair of tools.