US2005227561A1PendingUtilityA1

Anti-rewet press fabric or filter media comprising a fine porous layer of splittable microfibers

38
Individually held — no corporate assignee on recordPriority: Apr 13, 2004Filed: Apr 13, 2004Published: Oct 13, 2005
Est. expiryApr 13, 2024(expired)· nominal 20-yr term from priority
Inventors:Maryann C. Kenney
D21F 7/083Y10T442/3065
38
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

An anti-rewet fabric for a paper machine including a base fabric in the form of an endless loop. A fine porous layer is incorporated into the press fabric and is composed of split microfibers. The present invention provides good anti-rewet properties and exhibits a reduced start-up period and controlled wear. The present invention is also applicable to other fabrics, such as fabrics used for filtration.

Claims

exact text as granted — not AI-modified
1 . An anti-rewet press fabric for a paper machine, said fabric comprising: 
 a base fabric, said base fabric being in the form of an endless loop and having an outer side and an inner side; and    a fine porous layer applied to said base fabric, wherein said fine porous layer comprises split microfibers.    
   
   
       2 . The anti-rewet press fabric as claimed in  claim 1 , further comprising at least one additional layer of material disposed between said fine porous layer and said base fabric.  
   
   
       3 . The anti-rewet press fabric as claimed in  claim 1 , further comprising at least one additional layer of material applied to an outer side of said fine porous layer.  
   
   
       4 . The anti-rewet press fabric as claimed in  claim 1 , wherein said base fabric is a fabric selected from the group consisting of woven, nonwoven, nonwoven arrays of MD or CD oriented yarns, knitted and braided fabrics.  
   
   
       5 . The anti-rewet press fabric as claimed in  claim 4 , wherein said base fabric is an extruded mesh fabric.  
   
   
       6 . The anti-rewet press fabric as claimed in  claim 1 , wherein said base fabric is a strip of material spirally wound in a plurality of turns, each turn being joined to those adjacent thereto by a continuous seam, said base fabric being endless in a longitudinal direction, said strip material being selected from the group consisting of woven fabrics, nonwoven fabrics, knitted fabrics, braided fabrics and extruded mesh fabrics.  
   
   
       7 . The anti-rewet press fabric as claimed in  claim 1 , wherein said base fabric is an on-machine seamable fabric.  
   
   
       8 . The anti-rewet press fabric as claimed in  claim 2 , wherein said at least one additional layer of material comprises fiber batt.  
   
   
       9 . The anti-rewet press fabric as claimed in  claim 2 , wherein said at least one additional layer of material is comprised of a fine woven base.  
   
   
       10 . The anti-rewet press fabric as claimed in  claim 2 , wherein said at least one additional layer of material is comprised of a non-woven structure.  
   
   
       11 . The anti-rewet press fabric as claimed in  claim 3 , wherein said at least one additional layer of material comprises fiber batt.  
   
   
       12 . The anti-rewet press fabric as claimed in  claim 3 , wherein said at least one additional layer of material is comprised of a fine woven base.  
   
   
       13 . The anti-rewet press fabric as claimed in  claim 3 , wherein said at least one additional layer of material is comprised of a non-woven structure.  
   
   
       14 . The anti-rewet press fabric as claimed in  claim 1 , wherein at least one of said splittable microfibers comprise polyamide and polyester in the at least one fiber.  
   
   
       15 . The anti-rewet press fabric as claimed in  claim 14 , wherein said polyamide fibers are poly[imino(1-oxo-1,6-hexanediyl)].  
   
   
       16 . The anti-rewet press fabric as claimed in  claim 1 , wherein said fine porous layer further comprising nonsplittable fiber.  
   
   
       17 . The anti-rewet press fabric as claimed in  claim 16 , wherein said nonsplittable fiber is present in an amount sufficient to insure the integrity of the press fabric structure.  
   
   
       18 . An industrial filtration fabric comprising: 
 a base fabric, said base fabric being in the form of an endless loop and having an outer side and an inner side; and    a fine porous layer applied to said outer side of said base fabric, wherein said fine porous layer comprises split microfibers.    
   
   
       19 . The industrial filtration fabric as claimed in  claim 18 , wherein said base fabric is a fabric selected from the group consisting of woven, nonwoven, knitted and braided fabrics.  
   
   
       20 . The industrial filtration fabric as claimed in  claim 18 , wherein said fine porous layer is needle punched to said base fabric.  
   
   
       21 . The industrial filtration fabric as claimed in  claim 18 , wherein at least one of said splittable microfibers comprise polyester.  
   
   
       22 . The industrial filtration fabric as claimed in  claim 18 , wherein said fine porous layer further comprising nonsplittable fiber.

Join the waitlist — get patent alerts

Track US2005227561A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.