Cellulosic Fiber Containing Hydroentangled Nonwoven and Method for Producing It

Abstract

The invention is directed to a low-dusting, soft hydroentangled nonwoven with improved strength, which comprises cellulosic fiber with a pre-determined average length as well as staple fibers, which are either synthetic fibers and/or modified cellulose fibers, as well as a method for making this nonwoven.

1 . Low-dusting, soft hydroentangled nonwoven with improved strength, which comprises cellulosic fiber and as staple fiber synthetic and/or modified cellulose fiber, wherein the average length of the cellulosic fiber is less than 2.30 mm. 
     
     
         2 . The nonwoven according to  claim 1 , wherein the average length of the cellulosic fiber is between 1.90 mm and 2.30 mm. 
     
     
         3 . The nonwoven according to  claim 1 , wherein the average length of the cellulosic fiber is between 2.10 mm and 2.30 mm. 
     
     
         4 . The nonwoven according to the  claim 1 , comprising at least one layer of cellulosic fiber and at least one layer of staple fiber. 
     
     
         5 . The nonwoven according to  claim 1 , wherein the staple fiber is viscose. 
     
     
         6 . The nonwoven according to  claim 1 , wherein the staple fiber is polyester. 
     
     
         7 . The nonwoven according to  claim 1 , wherein the cellulose fiber is made from northern softwood. 
     
     
         8 . The nonwoven according to  claim 1 , wherein the proportion of cellulosic fiber in the fabric is 45% by weight or more. 
     
     
         9 . The nonwoven according to  claim 1 , wherein the proportion of cellulosic fiber in the fabric is 50% by weight or more. 
     
     
         10 . The nonwoven according to  claim 1 , wherein the proportion of cellulosic fiber in the fabric is over 50% by weight. 
     
     
         11 . A method for the production of a low-dusting, soft hydroentangled nonwoven with improved strength, which nonwoven comprises cellulosic fiber and as staple fiber synthetic and/or modified cellulose fiber and which method comprises the steps of:
 forming the web from cellulosic fiber and staple fiber by dry-laying,   bonding the web by hydroentanglement,   removing water from the nonwoven, and   drying the nonwoven and winding to form a roll,   
       wherein the cellulosic fiber web is comprised of cellulosic fibers having an average length of 2.30 mm or less. 
     
     
         12 . The method according to  claim 11 , wherein the average length of the cellulosic fiber is between 1.90 mm and 2.30 mm. 
     
     
         13 . The method according to  claim 11 , wherein the average length of the cellulosic fiber is between 2.10 mm and 2.30 mm. 
     
     
         14 . The method according to  claim 11 , wherein at least one web is formed from cellulosic fiber and at least one web from staple fibers.