US2005268980A1PendingUtilityA1

In-line sandwich seams

26
Individually held — no corporate assignee on recordPriority: Jun 4, 2004Filed: Jun 4, 2004Published: Dec 8, 2005
Est. expiryJun 4, 2024(expired)· nominal 20-yr term from priority
Inventors:Curtis D. GardnerSerge Chagnon
D21F 1/0036
26
PatentIndex Score
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Cited by
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References
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Claims

Abstract

The present invention is both a method for manufacturing a papermaker's dryer fabric and other seamed industrial fabrics, and the fabric made in accordance with the method. The industrial fabric has a main portion and first and second ends, and may be woven so as to have a first weave pattern at the main portion and a second weave pattern different from the first weave pattern at the first and second ends. The second weave pattern forms an upper layer and a lower layer with a pocket therebetween at the first and second ends. The industrial fabric further has a seaming member at least partially disposed in the pocket and attached to the respective upper layer and lower layer.

Claims

exact text as granted — not AI-modified
1 . An industrial fabric for use in a papermaking machine, said fabric having a main portion and first and second ends and being woven so as to have a first weave pattern at said main portion and a second weave pattern different from said first weave pattern at said first and second ends, said second weave pattern forming an upper layer and a lower layer with a pocket therebetween at said first and second ends, said fabric further having a seaming member at least partially disposed in said pocket and attached to said respective upper layer and lower layer.  
   
   
       2 . The industrial fabric according to  claim 1 , wherein said seaming member includes an insertion element and a connecting element.  
   
   
       3 . The industrial fabric according to  claim 2 , wherein said insertion element is disposed in said pocket.  
   
   
       4 . The industrial fabric according to  claim 2 , wherein said insertion element is a woven web.  
   
   
       5 . The industrial fabric according to  claim 2 , wherein said connecting element is a seaming loop or a spiral.  
   
   
       6 . The industrial fabric according to  claim 1 , wherein said main portion is formed from a plurality of interwoven layers.  
   
   
       7 . The industrial fabric according to  claim 1 , wherein each of said upper and lower layers is a single layer having interwoven machine direction (MD) yarns and cross-machine direction (CD) yarns.  
   
   
       8 . The industrial fabric according to  claim 7 , wherein at least one CD yarn is removed from each of said upper and lower layers at predetermined locations.  
   
   
       9 . The industrial fabric according to  claim 8 , wherein said predetermined locations in said upper layer align vertically with said predetermined locations in said lower layer.  
   
   
       10 . The industrial fabric according to  claim 9 , wherein a thread is sewn through said predetermined locations to attach said seaming member to said upper and lower layers.  
   
   
       11 . The industrial fabric according to  claim 1 , wherein said seaming member is sewn to said upper and lower layers.  
   
   
       12 . The industrial fabric according to  claim 11 , wherein said seaming member is sewn in-line.  
   
   
       13 . The industrial fabric according to  claim 1 , wherein said seaming member is a single piece having the same width of the fabric.  
   
   
       14 . The industrial fabric according to  claim 1 , wherein said seaming member is formed from smaller segments each having less than the width of the fabric.  
   
   
       15 . The industrial fabric according to  claim 1 , wherein the industrial fabric is a dryer fabric for use in a drying section of a papermaking machine.  
   
   
       16 . A method of forming an industrial fabric for use in a papermaking machine, said method comprising the steps of: 
 forming a main portion of said fabric with a first weave pattern;    forming first and second ends with a second weave pattern different from said first weave pattern, said second weave pattern forming an upper layer and a lower layer with a pocket therebetween, disposing a seaming member in said pocket; and    attaching said seaming member to said respective upper layer and lower layer.    
   
   
       17 . The method according to  claim 16 , wherein said seaming member includes an insertion element and a connecting element.  
   
   
       18 . The method according to  claim 17 , wherein said insertion element is disposed in said pocket.  
   
   
       19 . The method according to  claim 17 , wherein said insertion element is a woven web.  
   
   
       20 . The method according to  claim 17 , wherein said connecting element is a seaming loop or a spiral.  
   
   
       21 . The method according to  claim 16 , wherein said main portion is formed from a plurality of interwoven layers.  
   
   
       22 . The method according to  claim 16 , wherein each of said upper and lower layers is a single layer having a plurality of interwoven machine direction (MD) yarns and cross-machine direction (CD) yarns.  
   
   
       23 . The method according to  claim 22 , wherein CD yarns are absent from said upper and lower layers at predetermined locations.  
   
   
       24 . The method according to  claim 23 , wherein said predetermined locations in said upper layer align vertically with said predetermined locations in said lower layer.  
   
   
       25 . The method according to  claim 24 , wherein a thread is sewn through said predetermined locations to attach said seaming member to said upper and lower layers.  
   
   
       26 . The method according to  claim 16 , wherein said seaming member is sewn to said upper and lower layers.  
   
   
       27 . The method according to  claim 16 , wherein said seaming member is sewn in-line.  
   
   
       28 . The method according to  claim 16 , wherein said seaming member is a single piece having the same width of the fabric.  
   
   
       29 . The method according to  claim 16 , wherein said seaming member is formed from smaller segments each having less than the width of the fabric.  
   
   
       30 . The method according to  claim 16 , wherein the industrial fabric is a dryer fabric for use in a drying section of a papermaking machine.

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