US2004198118A1PendingUtilityA1

Hydroentangling using a fabric having flat filaments

42
Priority: Dec 16, 2002Filed: Dec 8, 2003Published: Oct 7, 2004
Est. expiryDec 16, 2022(expired)· nominal 20-yr term from priority
Inventors:Mark LevineChristian Widen
D04H 1/492D04H 18/04D06C 29/00D21F 1/0072B01D 39/1615B01D 39/1623D03D 13/00D03D 11/00Y10T442/3033Y10T442/3114D21F 1/0027Y10T442/322Y10T442/3041
42
PatentIndex Score
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Cited by
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References
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Claims

Abstract

A fabric incorporating flattened filaments for use as a support fabric in producing a nonwoven product by a hydroentangling process, and a hydroentangling method employing such a fabric.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A hydroentangling support fabric comprising flattened filaments.  
     
     
         2 . A hydroentangling support fabric as set forth in  claim 1 , wherein said fabric includes machine direction (MD) filaments and cross-machine direction (CD) filaments and said flattened filaments include only a portion of said MD filaments.  
     
     
         3 . A hydroentangling support fabric as set forth in  claim 1 , wherein said fabric includes MD filaments and CD filaments and said flattened filaments include all of said MD filaments.  
     
     
         4 . A hydroentangling support fabric as set forth in  claim 1 , wherein said fabric includes MD filaments and CD filaments and said flattened filaments include only a portion of said CD filaments.  
     
     
         5 . A hydroentangling support fabric as set forth in  claim 1 , wherein said fabric includes MD filaments and CD filaments and said flattened filaments include all of said CD filaments.  
     
     
         6 . A hydroentangling support fabric as set forth in  claim 1 , wherein said fabric includes MD filaments and CD filaments and said flattened filaments include a combination of said MD filaments and said CD filaments.  
     
     
         7 . A hydroentangling support fabric as set forth in  claim 1 , wherein said fabric is a double layer fabric and said flattened filaments are incorporated into only one layer.  
     
     
         8 . A hydroentangling support fabric as set forth in  claim 7 , wherein said one layer is the wear side layer.  
     
     
         9 . A hydroentangling support fabric as set forth in  claim 7 , wherein said one layer is the forming side layer.  
     
     
         10 . A hydroentangling support fabric as set forth in  claim 1 , wherein said fabric is a triple layer fabric and said flattened filaments are incorporated into only one layer.  
     
     
         11 . A hydroentangling support fabric as set forth in  claim 10 , wherein said one layer is the wear side layer.  
     
     
         12 . A hydroentangling support fabric as set forth in  claim 10 , wherein said one layer is the forming side layer.  
     
     
         13 . A hydroentangling support fabric as set forth in  claim 1 , wherein the permeability of said fabric is greater than 350 cfm.  
     
     
         14 . A hydroentangling support fabric as set forth in  claim 1 , wherein said fabric is a spiral link type fabric.  
     
     
         15 . A method of producing a support fabric for a hydroentangling process, comprising the step of incorporating flattened filaments within said support fabric/during production of said support fabric.  
     
     
         16 . A method of producing a support fabric for a hydroentangling process as set forth in  claim 15 , wherein said flattened filaments are formed through extrusion prior to weaving of said support fabric.  
     
     
         17 . A method of producing a support fabric for a hydroentangling process as set forth in  claim 15 , wherein said flattened filaments are formed by calendering non-flattened filaments prior to weaving of said support fabric.  
     
     
         18 . A method of producing a support fabric for a hydroentangling process as set forth in  claim 15 , wherein said flattened filaments are formed by calendering a source fabric.  
     
     
         19 . A method of producing a support fabric for a hydroentangling process as set forth in  claim 18 , wherein said calendering is applied to only one side of said source fabric.  
     
     
         20 . A method of producing a support fabric for a hydroentangling process as set forth in  claim 18 , wherein said calendering is applied to both sides of said source fabric.  
     
     
         21 . A method of producing a support fabric for a hydroentangling process as set forth in  claim 15 , wherein said flattened filaments are formed by sanding a source fabric.  
     
     
         22 . A method of producing a support fabric for a hydroentangling process as set forth in  claim 15 , wherein said fabric is a spiral link type fabric.  
     
     
         23 . A support fabric for a hydroentangling process, produced by incorporating flattened filaments within said support fabric during production of said support fabric.  
     
     
         24 . A support fabric for a hydroentangling process as set forth in  claim 23 , wherein said flattened filaments are formed through extrusion prior to weaving of said support fabric.  
     
     
         25 . A support fabric for a hydroentangling process as set forth in  claim 23 , wherein said flattened filaments are formed by calendering non-flattened filaments prior to weaving of said support fabric.  
     
     
         26 . A support fabric for a hydroentangling process as set forth in  claim 23 , wherein said flattened filaments are formed by calendering a source fabric.  
     
     
         27 . A support fabric for a hydroentangling process as set forth in  claim 26 , wherein said calendering is applied to only one side of said source fabric.  
     
     
         28 . A support fabric for a hydroentangling process as set forth in  claim 26 , wherein said calendering is applied to only both sides of said source fabric.  
     
     
         29 . A support fabric for a hydroentangling process as set forth in  claim 23 , wherein said flattened filaments are formed by sanding a source fabric.  
     
     
         30 . A support fabric for a hydroentangling process as set forth in  claim 23 , wherein said fabric is a spiral link type fabric.

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