Apparatus and Method in a Paper Machine and a Paper Machine

Abstract

The invention comprises an apparatus and a method in a paper machine and a paper machine. According to the invention at least one deckle rail with strip form body of the forming table comprises openings for leading water between the deckle rail with strip form body and the stock layer and/or the deckle rail with strip form body and the wire.

1 . Apparatus in a paper machine, comprising 
 at least one deckle rail ( 8 ) for supporting the edge of a stock layer ( 10 ) on a wire ( 5 ) of a forming table,    means for leading water to the vicinity of the deckle rail ( 8 ), characterised in that the apparatus comprises openings    in the lower surface of the deckle rail ( 8 ) for leading water directly between deckle rail ( 8 ) and the wire ( 5 ), for the sealing of the gap between the deckle rail ( 8 ) and the wire ( 5 ) with water.    
   
   
       2 . Apparatus according to  claim 1 , characterised in that, it comprises openings in the Inner edge of the deckle rail ( 8 ) facing the wire for leading of water between the deckle rail ( 8 ) and the stock layer ( 10 ) for lubricating of this gap.  
   
   
       3 . Apparatus according to  claim 1  or  2 , characterised in that, the inner edge of the deckle rail facing the wire and/or the lower surface of the deckle rail is of a porous material.  
   
   
       4 . Apparatus according to any of the claims  1 - 3 , characterised in that, at the end of the deckle rail means have been arranged for feeding water substantially in the machine direction for supporting the edge of the stock layer on the wire.  
   
   
       5 . Apparatus according to any of the claims  1 - 4 , characterised in that, the deckle rail ( 8 ) is substantially long, comprising the majority of the length of the forming table, extending at least nearly from the head box ( 1 ) at least nearly to the dry line.  
   
   
       6 . Method in a paper machine, in which 
 stock is fed to the wire ( 5 ) of the forming table in a paper machine to form a stock layer,    the edge of the stock layer ( 10 ) is supported by at least one deckle rail ( 8 ) on the wire ( 5 ), characterised in that, in the method water is brought inside the deckle rail ( 8 ) and    the space between the deckle rail ( 8 ) and the wire ( 5 ) is sealed with water by leading water from inside the deckle rail ( 8 ) between the deckle rail ( 8 ) and the wire ( 5 ).    
   
   
       7 . Method according to  claim 6 , characterlsed In that, the gap between the deckle rail ( 8 ) and the stock layer ( 10 ) is lubricated by leading water from inside the deckle rail ( 8 ) between the decide rail ( 8 ) and the stock layer ( 10 ).  
   
   
       8 . Method according to  claim 7 , characterised in that, the lubricating water is led through the inner surface of the deckle rail ( 8 ) facing the wire directly between the deckle rail ( 8 ) and the stock layer ( 10 ).  
   
   
       9 . Method according to any of the claims  6 - 8 , characterised in that, the sealing water is led through the lower surface of the deckle rail ( 8 ) facing the wire directly between the deckle rail ( 8 ) and the wire ( 5 ).  
   
   
       10 . Method according to any of the claims  6 - 9 , characterised in that, in the method dewatering takes place substantially on the entire width of the web, extending to the inner surface of the deckle rail.  
   
   
       11 . Method according to any of the claims  6 - 10 , characterised in that, in the method water ( 19 ) from the end Of the deckle rail ( 8 ) is fed substantially in the machine direction for supporting the edge of the stock layer ( 10 ) on the wire ( 5 ).  
   
   
       12 . Paper machine, comprising a forming table, characterised in that, in connection with the forming table is an apparatus according to any to the claims  1 - 5 .  
   
   
       13 . Paper machine according to  claim 12 , characterised in that, the forming table lacks means for bending the edges of the wire ( 5 ) of the forming table upwards.