Process for manufacturing insulating material

Abstract

Process for producing cellulose-based thermal and/or acoustic insulation material, characterised in that said insulation material comprises paper sludge and wherein said insulation material is in form of flakes.

1 . Process for producing cellulose-based thermal and/or acoustic insulation material, characterised in that said insulation material comprises paper sludge and wherein said insulation material is in form of flakes. 
     
     
         2 . Process according to  claim 1 , wherein said paper sludge derives from processes that use long fibre cellulose. 
     
     
         3 . Process according to  claim 1 , wherein said insulation material is free of bonding agents. 
     
     
         4 . Process is according to  claim 1 , wherein said paper sludge is subjected to mechanical hammering operations. 
     
     
         5 . Process is according to  claim 1 , wherein said paper sludge does not comprise material made of sheet elements or the like. 
     
     
         6 . Process is according to  claim 1 , wherein said paper sludge comprises a solid state material content between 25% and 60% in weight. 
     
     
         7 . Process is according to  claim 1 , wherein said paper sludge comprises a solid state material content between 8% and 10% in weight. 
     
     
         8 . Process is according to  claim 1 , wherein at least one additive from among flame retardants, colouring agents and fungicides is added to the paper sludge. 
     
     
         9 . Process according to  claim 8 , wherein the additives are added in form of liquid solution or powder material. 
     
     
         10 . Use of paper sludge for producing thermal and/or acoustic insulation material in form of flakes. 
     
     
         11 . Use according to  claim 10 , wherein said paper sludge derives from processes using long fibre cellulose. 
     
     
         12 . Use according to  claim 10 , wherein said thermal and/or acoustic insulation material are produced through mechanical hammering operations.