Method and device for applying a textile auxiliary during the stitch-bonding of geotextiles involving a hydrodynamic stitch-bonding process

Abstract

The invention relates to a method and device for applying a textile auxiliary in essentially one softening during the stitch-bonding of geotextiles involving a hydrodynamic process.

1 . Method for applying a textile auxiliary during a hydrodynamic solidification process of geotextiles comprised of continuous fibers, wherein the textile auxiliary is added in metered doses directly into the fluid utilized for the hydrodynamic solidification.  
     
     
         2 . Method as claimed in  claim 1 , wherein the textile auxiliary is introduced into the system of the hydrodynamic solidification by means of a dosing pump.  
     
     
         3 . Method as claimed in  claim 1  wherein two or more non-solidified or pre-solidified nonwoven fabrics are bonded to each other.  
     
     
         4 . Method as claimed in  claim 1 , wherein the nonwoven fabric to be solidified or the nonwoven fabrics to be bonded are comprised of synthetic materials, such as polypropylene, polyethylene, polyamide or polyester, or of mixtures thereof.  
     
     
         5 . Method as claimed in  claim 1 , wherein the nonwoven fabric to be solidified or the nonwoven fabrics to be bonded are comprised of or include bi-component fibers.  
     
     
         6 . Method as claimed in  claim 1  wherein the nonwoven fabric(s) additionally contain natural fibers.  
     
     
         7 . Geotextiles solidified according to  claim 1.