Method, casting mold, and production device

Abstract

A method and a casting mold for producing a fiber-based blank made of pulp ( 40 ). The method has the steps of providing a casting mold, filling the casting mold with a process liquid such that a liquid reservoir ( 31 ) is formed in the casting mold, and applying pulp ( 40 ) onto the liquid reservoir ( 31 ) in the casting mold.

1 . A method for producing a fiber-based blank, in particular a container ( 100 ,  100 ′,  100 ″) or a fiber-based closure element ( 300 ) for a container ( 100 ,  100 ′,  100 ″) from pulp ( 40 ), comprising the steps of
 providing a casting mold ( 20 ), 
 filling the casting mold ( 20 ) with a process liquid ( 30 ), in particular water, such that a liquid reservoir ( 31 ) is formed in the casting mold ( 20 ), 
 applying pulp ( 40 ) to the liquid reservoir ( 31 ) in the casting mold ( 20 ). 
 
     
     
         2 . The method according to  claim 1 , wherein the liquid reservoir ( 31 ) is replaced after the application of the pulp ( 40 ) to the liquid reservoir ( 31 ) by targeted draining of the liquid reservoir ( 31 ) through the casting mold ( 20 ). 
     
     
         3 . The method according to  claim 2 , wherein a flow of pulp ( 40 ) is created by draining the liquid reservoir ( 31 ) and the inflowing pulp is deposited on an inner wall of the casting mold ( 20 ). 
     
     
         4 . The method according to  claim 2 , wherein the liquid reservoir ( 31 ) is drained from the casting mold ( 20 ) at a plurality of points. 
     
     
         5 . The method according to  claim 4 , wherein the liquid reservoir ( 30 ) is drained from the casting mold ( 20 ) through the plurality of points in a specific time sequence. 
     
     
         6 . The method according to  claim 2 , wherein the container ( 100 ) formed by depositing the pulp ( 40 ) is removed from the mold ( 20 ) after the liquid reservoir ( 31 ) is replaced. 
     
     
         7 . The method according to  claim 1 , wherein the pulp ( 40 ) is introduced into the casting mold ( 20 ) at an overpressure. 
     
     
         8 . The method according to  claim 1 , wherein the liquid reservoir in the casting mold ( 20 ) is removed under a vacuum such that the pulp ( 40 ) is sucked into the casting mold ( 20 ). 
     
     
         9 . The method according to  claim 1 , wherein different pulps are introduced into the casting mold ( 20 ) one after the other, so that a layered structure of the blank can be produced within the casting mold. 
     
     
         10 . The method according to  claim 1 , wherein, by filling the casting mold ( 20 ) with the process liquid ( 30 ), the casting mold ( 20 ) is backwashed before the pulp ( 40 ) is introduced. 
     
     
         11 . A casting mold ( 20 ) for producing a fiber-based blank from pulp ( 40 ), in particular for carrying out a method according to  claim 1 , wherein the casting mold ( 20 ) is permeable to liquid, characterized in that wherein the casting mold has at least one closable drain opening ( 21 ) for draining liquid from the interior ( 22 ) of the casting mold ( 20 ). 
     
     
         12 . The casting mold ( 20 ) according to  claim 11 , wherein the casting mold has a plurality of closable drain openings ( 21 ) such that a liquid can be drained from the interior of the casting mold ( 20 ), in particular from a cavity ( 24 ), at a plurality of points. 
     
     
         13 . The casting mold ( 20 ) according to  claim 12 , wherein the plurality of closable drain openings ( 21 ) are arranged along the casting mold ( 20 ) in different planes. 
     
     
         14 . The casting mold ( 20 ) according to  claim 11 , wherein the closable drain openings ( 21 ) are configured as valves, in particular as pinch valves. 
     
     
         15 . The casting mold ( 20 ) according to  claim 11 , wherein the casting mold has an outer boundary ( 23 ) that is impermeable to liquid. 
     
     
         16 . A production device comprising a casting mold ( 20 ) according to  claim 11  for producing a fiber-based container ( 100 ) from pulp ( 40 ), in particular according to a method for producing the fiber-based container ( 100 ,  100 ′,  100 ″) from the pulp ( 40 ), comprising the steps of
 providing a casting mold ( 20 ), 
 filling the casting mold ( 20 ) with a process liquid ( 30 ), in particular water, such that a liquid reservoir ( 31 ) is formed in the casting mold ( 20 ), 
 applying pulp ( 40 ) to the liquid reservoir ( 31 ) in the casting mold ( 20 ). 
 
     
     
         17 . The production device according to  claim 16 , wherein the production device has a control apparatus for controlling the drain openings ( 21 ).