Device and process for transferring a material web

Abstract

A device for transferring a material web includes a transfer zone to which vacuum can be applied and at least one sealing mechanism with sealing lips. The sealing mechanism limits or divides the transfer zone, where suction can be applied to a space between the sealing lips.

1 . A device for transferring a material web from a first supporting surface to a subsequent supporting surface, the device comprising a transfer zone to which vacuum can be applied and at least one sealing mechanism having a plurality of sealing lips, the sealing mechanism limiting or dividing the transfer zone, at least two of the sealing lips defining a space therebetween to which suction can be applied through an opening. 
   
   
       2 . The device of  claim 1 , further comprising a supporting belt adapted to support the material web in the transfer zone. 
   
   
       3 . The device of  claim 1 , wherein the sealing lips of the sealing mechanism form a labyrinth seal. 
   
   
       4 . The device of  claim 1 , wherein the transfer zone comprises a pick-up zone and a stabilizing zone. 
   
   
       5 . The device of  claim 4 , wherein the sealing mechanism defines the limit of the pick-up zone. 
   
   
       6 . The device of  claim 5 , wherein the sealing mechanism is disposed intermediate the pick-up zone and the stabilizing zone. 
   
   
       7 . The device of  claim 1 , wherein the sealing mechanism is swivel-mounted. 
   
   
       8 . A process for transferring a material web from a first supporting surface to a subsequent supporting surface, the process comprising
 applying a vacuum in a transfer zone to transfer the material web from the first supporting surface to the subsequent supporting surface; and   applying a suction to a sealing mechanism in the transfer zone.