Papermaking Method and Papermaking System

Abstract

A papermaking method according to this invention is carried out using a paper machine provided with a head box ( 3 ) including a cell-structure manifold ( 30 ). An aqueous solution (M) containing 0.03 to 0.4 wt % of viscous agent is added to a material pulp slurry (S), and the obtained mixed pulp slurry (MS) is introduced into the manifold ( 30 ).

1 . A method of making paper using a paper machine provided with a head box including a manifold having a cell-structure, the method comprising the steps of:
 adding an aqueous solution of a viscous agent having a concentration of 0.03 to 0.4 wt % to a material pulp slurry; and   introducing a mixed pulp slurry containing the material pulp slurry and the aqueous solution of viscous agent into the manifold.   
     
     
         2 . The papermaking method according to  claim 1 , wherein the addition of the aqueous solution of viscous agent is performed between the head box and a screen located closest to the head box. 
     
     
         3 . The papermaking method according to  claim 1 , wherein the viscous agent is a polyethylene oxide-based viscous agent. 
     
     
         4 . A papermaking system comprising:
 a screen for removing impurities from a material pulp slurry;   a paper machine provided with a head box including a manifold having a cell-structure arranged downstream from the screen; and   a viscous agent adder for supplying an aqueous solution of a viscous agent having a concentration of 0.03 to 0.4 wt % into a pipe connecting the screen and the head box to each other.   
     
     
         5 . The papermaking system according to  claim 4 , wherein the viscous agent is a polyethylene oxide-based viscous agent.