Paper making method and apparatus

Abstract

An apparatus for making paper includes a stirring tank and a paper making portion. The stirring tank includes: an outer cylinder; a middle cylinder disposed concentrically with the outer cylinder; a raw-material feeding port for feeding raw-material into said stirring tank; a stirring mechanisms; and a top plate for holding the outer and middle cylinders in a predetermined position. The paper making portion is installed below the stirring tank and includes: a wire cloth and a paper making frame having an opening for holding said wire cloth, and the opening is connected to a suction unit. The stirring mechanisms are uniformly disposed above the wire cloth. In addition, a plurality of raw-material feeding ports are uniformly disposed above the wire cloth.

1 . An apparatus for making paper, comprising: 
 a stirring tank including: 
 an outer cylinder;  
 a middle cylinder located concentrically with said outer cylinder and in the inside of said outer cylinder;  
 a raw-material feeding port for feeding a raw material;  
 stirring mechanisms disposed between said outer cylinder and said middle cylinder; and  
 a top plate for holding said outer and middle cylinders in a predetermined position, and  
   a paper making portion installed below said stirring tank, said paper making portion including:    a wire cloth; and    a paper making frame having an opening for holding said wire cloth, said opening being connected to a suction unit,    wherein said stirring mechanisms are uniformly disposed above said wire cloth.    
   
   
       2 . The paper making apparatus according to  claim 1 , wherein said equally disposed stirring mechanisms are alternately disposed with respect to a central annular line of a paper making portion of said wire cloth.  
   
   
       3 . The paper making apparatus according to  claim 1 , wherein said stirring mechanisms are air nozzles.  
   
   
       4 . The paper making apparatus according to  claim 1 , wherein a cleaning fluid jet mechanism is provided on said top plate.  
   
   
       5 . A method of making an annular paper body, comprising the steps of: 
 feeding a raw material from a raw-material feeding port disposed above a wire cloth so that the raw material is uniformly fed onto said wire cloth; and    passing the raw material diluted in water through said wire cloth.    
   
   
       6 . The paper making method according to  claim 5 , wherein said feeding step feeds the raw material from a plurality of raw-material feeding ports uniformly disposed above said wire cloth.  
   
   
       7 . The paper making method according to  claim 6 , wherein said feeding step feeds the raw material from said plurality of raw-material feeding ports alternately disposed with respect to a central annular line of a paper making portion of said wire cloth.  
   
   
       8 . The paper making method according to  claim 5 , wherein in said feeding step, the raw material is fed while crawling on the surface of a middle cylinder provided within a paper making apparatus.  
   
   
       9 . The paper making method according to  claim 5 , wherein a central body having a substantially conical portion is provided within a paper making apparatus, and said feeding step feeds the raw material toward the apex of said conical portion of said central body.  
   
   
       10 . The paper making method according to  claim 5 , wherein said feeding step feeds the raw material with a predetermined concentration into water which is in a stirred condition, and 
 said passing step is carried out while maintaining the stirred condition for a predetermined time after said feeding step is completed.    
   
   
       11 . A paper making apparatus comprising: 
 a stirring tank including: 
 an outer cylinder;  
 a middle cylinder located concentrically with the outer cylinder and in the inside of said outer cylinder;  
 a raw-material feeding port for feeding a raw material;  
 stirring mechanisms disposed between said outer cylinder and said middle cylinder; and  
 a top plate for holding said outer cylinder, said middle cylinder and said stirring mechanisms in a predetermined position; and  
   a paper making portion disposed in a lower portion of said stirring tank, said paper making portion including: 
 a wire cloth; and  
 a central body having an opening for holding said wire cloth and is connected to a suction unit,  
   wherein said raw-material feeding ports -are uniformly disposed above said wire cloth.    
   
   
       12 . The paper making apparatus according to  claim 11 , wherein said raw-material feeding ports are alternately disposed with respect to a central annular line of a paper making portion of said wire cloth.  
   
   
       13 . The paper making apparatus according to  claim 11 , wherein the middle cylinder has a cylindrical column shape.  
   
   
       14 . The paper making apparatus according to  claim 11 , wherein one of a stirring air supply hole, said raw-material feeding port and a cleaning fluid jet port is provided on a side surface of said middle cylinder.  
   
   
       15 . A paper making apparatus comprising: 
 a stirring tank including: 
 an outer cylinder;  
 a middle cylinder located concentrically with the outer cylinder and in the inside of said outer cylinder;  
 a raw-material feeding port for feeding a raw material;  
 stirring mechanisms disposed between said outer cylinder and said middle cylinder; and  
 a top plate for holding said outer cylinder, said middle cylinder and said stirring mechanisms in a predetermined position; and  
   a paper making portion disposed in a lower portion of said stirring tank, said paper making portion including: 
 a wire cloth; and  
 a central body having an opening for holding said wire cloth and is connected to a suction unit,  
   wherein said raw-material feeding port is directed to the outer peripheral surface of said middle cylinder.    
   
   
       16 . A paper making apparatus comprising: 
 a stirring tank including: 
 an outer cylinder;  
 a raw-material feeding port for feeding a raw material;  
 stirring mechanisms disposed within said outer cylinder; and  
 a top plate for holding said outer cylinder, said raw-material feeding port and said stirring mechanisms in a predetermined position; and  
   a paper making portion disposed in a lower portion of said stirring tank, said paper making portion including: 
 a wire cloth; and  
 a central body having an opening for holding said wire cloth and is connected to a suction unit, an upper surface of said central body being formed in a substantially conical shape,  
   wherein said raw-material feeding port is disposed above the apex of the conical upper surface.