Apparatus for making a spunbond nonwoven

Abstract

An apparatus for making a spunbond nonwoven has a spinneret for making bicomponent filaments having an eccentric core-sheath configuration whose sheaths seen axially of the filament have constant thicknesses over at least 20% of their outer surfaces. A mesh belt receives the filaments from the spinneret.

We claim: 
     
         1 . An apparatus for making a spunbond nonwoven, the apparatus comprising:
 a spinneret for making bicomponent or multicomponent filaments having an eccentric core-sheath configuration whose sheaths seen axially of the filament have constant thicknesses over at least 20% of their outer surfaces; and   a mesh belt for receiving the filaments from the spinneret.   
     
     
         2 . The apparatus according to  claim 1 , further comprising:
 a cooler for cooling the filaments; and   a stretcher connected to the cooler for stretching the filaments.   
     
     
         3 . The apparatus according to  claim 2 , further comprising a diffuser connected to the stretcher. 
     
     
         4 . The apparatus according to  claim 2 , wherein the cooler and the stretcher form an assembly that is closed, and, except for the supply of cooling air in the cooler blocks entry of further air from outside. 
     
     
         5 . The apparatus according to  claim 1 , further comprising:
 a thermal preconsolidater for thermally preconsolidating the filaments of the nonwoven web deposited on the mesh belt by the spinneret.   
     
     
         6 . The apparatus according to  claim 5 , wherein the thermal preconsolidater operates with hot air. 
     
     
         7 . An apparatus for making a spunbond nonwoven textile from endless crimped continuous filaments, the apparatus comprising:
 a spinneret for making bicomponent or multicomponent filaments having an eccentric core-sheath configuration whose sheaths seen axially of the filament have constant thicknesses of 0.1 to 5 Φm over at least 20% of their outer surfaces; and   a mesh belt for receiving the filaments from the spinneret.