Device and method of sealing packages

Abstract

A device for sealing packages comprises a sealing bar ( 1, 2 ). It is the object of the present invention to provide a sealing bar which solves the problems of lacking evenness of the sealing bar due to manufacturing tolerances. Advantageously, the quality of the sealing seam shall be enhanced. This object is solved by a compressible, heat conducting material ( 5 ) provided on the sealing bar ( 1, 2 ).

1 - 17 . (canceled) 
     
     
         18 . A device for sealing of packages, comprising a first sealing bar having a sealing face and a compressible, heat conducting material provided on the sealing bar at the sealing face. 
     
     
         19 . The device according to  claim 18 , wherein the material is elastic. 
     
     
         20 . The device according to  claim 18 , wherein the material comprises a metal meshwork. 
     
     
         21 . The device according to  claim 18 , further comprising a counter-bearing. 
     
     
         22 . The device according to  claim 18 , further comprising a second sealing bar that is provided as a counter-bearing, wherein a sealing operation is performed therebetween. 
     
     
         23 . The device according to  claim 22 , wherein each of the first sealing bar and the second sealing bar comprises a contact face adapted to receive a package material therebetween. 
     
     
         24 . The device according to  claim 22 , wherein said second also comprises a compressible, heat conducting material. 
     
     
         25 . The device according to  claim 18 , wherein the compressible, heat conducting material extends over the entire sealing face. 
     
     
         26 . The device according to  claim 18 , wherein the compressible, heat conducting material has a side opposite to the sealing bar, and further comprising a strip on the side of the compressible, heat conducting material. 
     
     
         27 . The device according to  claim 26 , wherein the strip comprises Teflon. 
     
     
         28 . The device according to  claim 18 , wherein the first sealing bar comprises a heating device. 
     
     
         29 . The device according to  claim 22 , wherein at least one of the first sealing bar and the second sealing bar comprises a heating device 
     
     
         30 . A method of sealing packages, said method comprising: pressing a first sealing bar to a counter-bearing; and providing a compressible, heat conducting material on the first sealing bar. 
     
     
         31 . The method according to  claim 30 , further comprising forming the counter-bearing with a second sealing bar. 
     
     
         32 . The method according to  claim 31 , further comprising receiving a web between the first sealing bar and the second sealing bar. 
     
     
         33 . The method according to  claim 32 , further comprising sealing the web over an entire surface of the sealing bar with a constant pressure. 
     
     
         34 . The method according to  claim 30 , further comprising compensating for tilting and/or manufacturing tolerances of the sealing bars with the compressible, heat conducting material. 
     
     
         35 . The method according to  claim 30 , further comprising provinding an elastic metal meshwork for the material.