Device for hydrodynamically strengthening nonwovens, wovens or knitted fabrics

Abstract

The invention relates to an apparatus for hydrodynamic entanglement of non-wovens, wovens or knits, comprising a basic drum ( 1 ) having a multiplicity of holes ( 4 ), on which basic drum ( 1 ), spaced apart therefrom, there is arranged a structured drum ( 6 ), the spacing between the basic drum ( 1 ) and the structured drum ( 6 ) being arranged to be produced by a plurality of wires ( 5, 5′, 5″, 5′″, . . . ) which are arranged on the surface of the basic drum ( 1 ) and which are at least in part in material-based connection with the basic drum ( 1 ), the wires ( 5, 5′, 5″, 5′″, . . . ) being arranged in parallel to one another on the surface of the basic drum ( 1 ), characterised in that the wires ( 5, 5′, 5″, 5′″, . . . ) are arranged on the surface of the basic drum ( 1 ) at an angle α of from 5° to 45°, preferably 15°, relative to the longitudinal axis of the basic drum ( 1 ).

1 . Apparatus for hydrodynamic entanglement of non-wovens, wovens or knits, comprising a basic drum having a multiplicity of holes, on which basic drum, spaced apart therefrom, there is arranged a structured drum, the spacing between the basic drum and the structured drum being arranged to be produced by a plurality of wires which are arranged on the surface of the basic drum and which are at least in part in material-based connection with the basic drum, the wires being arranged in parallel to one another on the surface of the basic drum, characterised in that the wires are arranged on the surface of the basic drum at an angle α of from 5° to 45°, preferably 15°, relative to the longitudinal axis of the basic drum. 
     
     
         2 . Apparatus according to  claim 1 , characterised in that between two to ten rows of holes are arranged between the wires. 
     
     
         3 . Apparatus according to  claim 1 , characterised in that the wires have a round, rectangular or contoured cross-section. 
     
     
         4 . Apparatus according to  claim 3 , characterised in that the wires have depressions and elevations. 
     
     
         5 . Apparatus according to  claim 1 , characterised in that the wires have a diameter of from 0.5 to 5 mm, preferably 1 to 3 mm, especially from 1 to 2 mm. 
     
     
         6 . Apparatus according to  claim 1 , characterised in that the wires are soldered onto the surface of the structured drum. 
     
     
         7 . Apparatus according to  claim 1 , characterised in that the structured drum is nickel-plated together with the wires. 
     
     
         8 . Apparatus for hydrodynamic entanglement of non-wovens, wovens or knits, comprising a basic drum having a multiplicity of holes, on which basic drum, spaced apart therefrom, there is arranged a structured drum, characterised in that the spacing between the basic drum and structured drum is arranged to be produced by at least one pin having a head, which is arranged to be fixed in the basic drum. 
     
     
         9 . Apparatus according to  claim 8 , characterised in that the height of the heads is between 1 to 10 mm. 
     
     
         10 . Apparatus according to  claim 8 , characterised in that the heads have an approximately semi-circular shape. 
     
     
         11 . Apparatus according to  claim 8 , characterised in that the holes in the basic drum have a diameter of from 2 to 10 mm. 
     
     
         12 . Apparatus according to  claim 8 , characterised in that the holes have a spacing of from 3 to 12 mm relative to one another. 
     
     
         13 . Apparatus for hydrodynamic entanglement of non-wovens, wovens or knits, comprising a basic drum having a multiplicity of holes, on which basic drum, spaced apart therefrom, there is arranged a structured drum, characterised in that the spacing between the basic drum and the structured drum is arranged to be produced by knobs which have been introduced into the basic drum by means of a deformation process. 
     
     
         14 . Apparatus according to  claim 13 , characterised in that the spacing of the knobs is between 10 and 30 mm relative to one another. 
     
     
         15 . Apparatus according to  claim 13 , characterised in that the knobs have a closed contour. 
     
     
         16 . Apparatus according to  claim 13 , characterised in that the diameter of the holes is between 4 to 10 mm, preferably 2 to 6 mm. 
     
     
         17 . Apparatus according to  claim 8 , characterised in that the holes in the basic drum have a diameter of from 3.5 to 5 mm. 
     
     
         18 . Apparatus according to  claim 8 , characterised in that the holes have a spacing of from 5 to 7 mm relative to one another. 
     
     
         19 . Apparatus according to  claim 1 , characterised in that the holes in the basic drum have a diameter of from 2 to 10 mm. 
     
     
         20 . Apparatus according to  claim 1 , characterised in that the holes have a spacing of from 3 to 12 mm relative to one another.