Material made of mineral fibers for absorbing impact noise

Abstract

The invention relates to a material comprising a felt of mineral fibers, such as glass fibers, intended to be placed under a wood floor, especially of the laminate type, so as to absorb the noise of impact against the wood floor.

1 . An assembly comprising a wood floor juxtaposed with a material comprising a felt of mineral fibers.  
     
     
         2 . The assembly as claimed in the preceding claim, characterized in that the felt has a thickness ranging from 2 to 10 mm.  
     
     
         3 . The assembly as claimed in the preceding claim, characterized in that the felt has a thickness ranging from 3 to 7 mm.  
     
     
         4 . The assembly as claimed in one of the preceding claims, characterized in that the fibers of the felt have a fineness index ranging from 3 to 25 liters per minute.  
     
     
         5 . The assembly as claimed in the preceding claim, characterized in that the fibers of the felt have a fineness index ranging from 10 to 15 l/min.  
     
     
         6 . The assembly as claimed in the preceding claim, characterized in that the mineral fibers are glass fibers.  
     
     
         7 . The assembly as claimed in one of the preceding claims, characterized in that the felt includes some binder in an amount from 3 to 30% by weight.  
     
     
         8 . The assembly as claimed in the preceding claim, characterized in that the felt includes some binder in an amount from 5 to 25% by weight.  
     
     
         9 . The assembly as claimed in the preceding claim, characterized in that the felt includes some binder in an amount from 6 to 16% by weight.  
     
     
         10 . The assembly as claimed in one of the preceding claims, characterized in that the binder is of the thermosetting type.  
     
     
         11 . The assembly as claimed in one of the preceding claims, characterized in that the binder is of the phenolic or acrylic or epoxy type.  
     
     
         12 . The assembly as claimed in one of the preceding claims, characterized in that the fibers were produced by the internal centrifugation process.  
     
     
         13 . The assembly as claimed in one of the preceding claims, characterized in that the material includes at least one veil.  
     
     
         14 . The assembly as claimed in the preceding claim, characterized in that at least one veil is on an external face of the assembly.  
     
     
         15 . The assembly as claimed in either of the two preceding claims, characterized in that at least one veil has a mass per unit area ranging from 5 to 100 g/m 2 .  
     
     
         16 . The assembly as claimed in one of the three preceding claims, characterized in that at least one veil is made of polyester.  
     
     
         17 . The assembly as claimed in one of the preceding claims, characterized in that the material and the wood floor are adhesively bonded to each other.  
     
     
         18 . The assembly as claimed in one of the preceding claims, characterized in that the wood floor is a laminate.  
     
     
         19 . A building that includes an assembly as claimed in one of the preceding claims.  
     
     
         20 . A felt comprising mineral fibers, with a thickness ranging from 2 to 10 mm and a mass per unit area of at least 130 g/m 2 .  
     
     
         21 . The felt as claimed in the preceding claim, characterized in that its mass per unit area ranges from 180 to 700 g/m 2 .  
     
     
         22 . The felt as claimed in one of the preceding felt claims, characterized in that it has a thickness ranging from 3 to 7 mm.  
     
     
         23 . The felt as claimed in one of the preceding felt claims, characterized in that its fibers have a fineness index ranging from 3 to 25 liters per minute.  
     
     
         24 . The felt as claimed in the preceding claim, characterized in that its fibers have a fineness index ranging from 10 to 15 l/min.  
     
     
         25 . The felt as claimed in one of the preceding felt claims, characterized in that it includes some binder in an amount from 3 to 30% by weight.  
     
     
         26 . The felt as claimed in one of the preceding felt claims, characterized in that it includes some binder in an amount from 5 to 25% by weight.  
     
     
         27 . The felt as claimed in the preceeding claim, characterized in that the felt includes some binder in an amount from 6 to 16% by weight.  
     
     
         28 . The felt as claimed in one of the preceeding felt claims, characterized in that the binder is of the thermosetting type.  
     
     
         29 . The felt as claimed in one of the preceding felt claims, characterized in that the binder is of the phenolic or acrylic or epoxy type.  
     
     
         30 . The felt as claimed in one of the preceding felt claims, characterized in that the fibers were produced by the internal centrifugation process.  
     
     
         31 . The felt as claimed in one of the preceding felt claims, characterized in that the mineral fibers are glass fibers.  
     
     
         32 . The use of a material comprising a felt of mineral fibers, said material being placed on a floor base and under a wood floor, in order to attenuate the impact noise caused by the impact with said wood floor.  
     
     
         33 . The use as claimed in the preceding claim, characterized in that the material is not adhesively bonded to the floor base.