Process belt, method for producing paper or nonwoven and use of a process belt

Abstract

Increasingly higher requirements are imposed on the quality and the speed of the production process during the manufacture of nonwovens. It is therefore an object of the invention to provide a process belt for improved nonwoven manufacture. This object is achieved with a process belt for nonwoven or paper manufacture which comprises a device for electrical charging of the process belt. Such a device makes it possible to influence the deposition of nonwoven material on the belt and also to optimally configure the contact between belt and nonwoven material during nonwoven manufacture. In particular, during the transfer of nonwoven material from one belt to another or another installation part, the electrostatic charge assists by repulsion and attraction reactions between nonwoven material and belt.

1 . A process belt for nonwoven or paper manufacture, by comprising a device for electrical charging of the process belt. 
   
   
       2 . The process belt according to  claim 1 , wherein the device has a slider. 
   
   
       3 . The process belt according to  claim 1 , wherein the device has a conductive roller or conductive ring. 
   
   
       4 . The process belt according to  claim 1 , wherein the device has induction means. 
   
   
       5 . The process belt according to  claim 1 , wherein the device has means for specifically inducing tribo-electric charge. 
   
   
       6 . The process belt according to  claim 1 , wherein the process belt comprises a metal. 
   
   
       7 . The process belt according to  claim 1 , wherein the process belt comprises a conductive plastic. 
   
   
       8 . The process belt according to  claim 1 , wherein the process belt comprises a metal part and a plastic part. 
   
   
       9 . The process belt according to  claim 1 , wherein a charge having the same polarity as the process material is present in the belt. 
   
   
       10 . The process belt according to  claim 1 , wherein a charge having opposite polarity to the process material is present in the belt. 
   
   
       11 . The process belt according to  claim 1 , wherein the device comprises a direct current source. 
   
   
       12 . The process belt according to  claim 1 , wherein the device comprises an alternating current source. 
   
   
       13 . The process belt according to  claim 1 , wherein the charge is produced specifically in the depositing area of the process material. 
   
   
       14 . The process belt according to  claim 1  wherein the charge is produced specifically in a transfer area to another belt or another installation part. 
   
   
       15 . The process belt according to  claim 1 , wherein only one functional part of the process belt is charged. 
   
   
       16 . A method for producing paper or nonwoven, wherein a process belt according to  claim 1  is specifically electrically charged. 
   
   
       17 . Use of a process belt, in particular a process belt according to  claim 1  and specifically with complete or local electrical charging of the process belt.