Mineral Wool Insulation Product For Façade Renovations

Abstract

The invention is directed to a mineral wool insulation slab for facade renovations, comprising a rigid insulation slab or lamella having and outer and an inner side, wherein the outer side of the slab comprises an outer layered surface and the innerside of the slab is a mechanically and/or chemically softened layer of the one and same insulation slab. The invention is further directed to a method for manufacturing of such an insulation slab.

1 . A mineral wool insulation slab for façade renovations, comprising:
 a rigid insulation slab or lamella, a core having a density of 20-120 kg/m 3 , the insulation slab or lamella has an outer side and an inner side, wherein 
 the outer side of the slab comprises an outer layered surface and 
 the inner side of the slab is a mechanically, mangled or rolled, and/or chemically softened layer, said softened layer being essentially softer than the rest of the slab, 
 wherein the density of the softened layer of the slab is between 18 and 108 kg/m 3 . 
 
     
     
         2 . The insulation slab of  claim 1 , wherein the density of the slab is between 40 and 100 kg/m 3 . 
     
     
         3 . The insulation slab of  claim 1 , wherein the density of the softened layer of the slab is less than 108 kg/m 3 . 
     
     
         4 . The insulation slab of  claim 1 , wherein the depth of the softened layer is 10-100 mm. 
     
     
         5 . The insulation slab of  claim 1 , wherein the insulation slab is of stone wool or glass wool. 
     
     
         6 . The insulation slab of  claim 1 , wherein the outer side of the insulation slab comprises a wind protective surface or coating. 
     
     
         7 . The insulation slab of  claim 1 , wherein the outer side of the insulation slab comprises a rendered façade coating, 
     
     
         8 . A method for manufacturing of a mineral wool insulation slab for façade renovations comprising a rigid insulation slab or lamella, having a density of 20-120 kg/m 3  which insulation slab or lamella has an outer side and an inner side wherein the method comprises the steps of:
 softening of the inner side of the insulation slab mechanically, by rolling or cutting, or chemically, and 
 adding an outer layered surface to the outer side of the insulation slab, wherein the density of the softened layer of the slab is between 18 and 108 kg/m 3 . 
 
     
     
         9 . The method of manufacturing of an insulation slab of  claim 8 , wherein the softening is made mechanically by feeding the insulation slab on a manufacturing line over a rollable mangle or cutting roll. 
     
     
         10 . The method of manufacturing of an insulation slab of  claim 9 , wherein the cutting roll comprises blades along the perimeter of the axis of the cutting roll, which will when the insulation slab is fed over the cutting roll, create cuts in the direction of the line over the entire length of the insulation slab. 
     
     
         11 . The method of manufacturing of an insulation slab of  claim 10 , wherein the distance between the blades is between 0.5 and 2.5 cm. 
     
     
         12 . The method of manufacturing an insulation slab of  claim 11 , wherein the cutting roll comprises metal molds for cutting into the insulation slab. 
     
     
         13 . The method of manufacturing of an insulation slab of  claim 9 , wherein the cutting roll comprises spikes or needles. 
     
     
         14 . The method of manufacturing of an insulation slab of  claim 8 , wherein the softening is made chemically by adding less binding agent to the back side of the insulation slab or by adding a chemical agent to the back side of the insulation slab. 
     
     
         15 . The method of manufacturing of an insulation slab of  claim 8 , wherein the adding of an outer layered surface comprises gluing or spraying a wind protective surface or coating or a rendered surface or coating to the insulation slab. 
     
     
         16 . The method of manufacturing of an insulation slab of  claim 8 , wherein the insulation slab is of stone wool or glass wool. 
     
     
         17 . (canceled) 
     
     
         18 . The insulation slab of  claim 1 , wherein the density of the softened layer of the slab is between 30-80 kg/m 3 . 
     
     
         19 . The insulation slab of  claim 4 , wherein the depth of the softened layer is 20-50 mm. 
     
     
         20 . The method of manufacturing of an insulation slab of  claim 8 , wherein the density of the softened layer of the slab is between 30-80 kg/m 3 .