US2003201567A1PendingUtilityA1

Tacky polymer melt spinning process

39
Priority: Apr 30, 2002Filed: Apr 30, 2002Published: Oct 30, 2003
Est. expiryApr 30, 2022(expired)· nominal 20-yr term from priority
Inventors:Richard W. MillerWalter J. NunningRaymond S. Knorr
D01F 6/80D01F 6/60
39
PatentIndex Score
0
Cited by
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References
0
Claims

Abstract

A method for high speed melt spinning of binder fibers by melting a polymer that exhibits substantially no exothermic crystallization peak as measured by DSC when it is cooled to solidification from a molten state according to test A, spinning said polymer at a speed of greater than about 2000 meters per minute to form said binder fibers; and winding said binder fiber onto a spin bobbin.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A method for high speed melt spinning of binder fiber comprising; 
 melting a polymer having a melting temperature range of greater than 0° C. to 160° C.;    spinning said polymer at a speed of greater than about 2000 meters per minute to form said binder fiber; and    winding said binder fiber onto a spin bobbin.    
     
     
         2 . A method according to  claim 1 , wherein said polymer comprises polyamides.  
     
     
         3 . A method according to  claim 1 , wherein said polymer comprises nylon 6/66/612 and 6/69.  
     
     
         4 . A method according to  claim 1 , wherein said polymer comprises nylon 6/66/12.  
     
     
         5 . A method according to  claim 1 , wherein said melting temperature range is greater than 0° C. to less than about 150° C.  
     
     
         6 . A method according to  claim 1 , wherein said melting temperature range is greater than 0° C. to less than about 140° C.  
     
     
         7 . A method according to  claim 1 , wherein said speed is greater than about 2500 meters per minute.  
     
     
         8 . A method according to  claim 1 , wherein said speed is greater than about 3000 meters per minute.  
     
     
         9 . A method according to  claim 1 , wherein spin finish is placed on said binder fiber prior to said winding.  
     
     
         10 . A method according to  claim 1 , wherein unwinding tension of said binder fiber from said spin bobbin is less than 2.0 grams on average.  
     
     
         11 . A method according to  claim 1 , wherein unwinding tension of said binder fiber from said spin bobbin is less than 1.5 grams on average.  
     
     
         12 . A method according to  claim 1 , wherein unwinding tension of said binder fiber from said spin bobbin is less than 1.0 grams on average.  
     
     
         13 . A method according to  claim 1 , wherein said winding of said fiber comprises a speed substantially equal to said spinning speed.  
     
     
         14 . A method according to  claim 1 , wherein said polymer exhibits substantially no exothermic crystallization peak as measured by DSC when it is cooled to solidification from a molten state by test A.  
     
     
         15 . A method for high speed melt spinning of binder fibers comprising; 
 melting a polymer that exhibits substantially no exothermic crystallization peak as measured by DSC when it is cooled to solidification from a molten state according to test A;    spinning said polymer at a speed of greater than about 2000 meters per minute to form said binder fiber; and    winding said binder fiber onto a spin bobbin.    
     
     
         16 . A method according to  claim 15 , wherein said polymer comprises polyamides.  
     
     
         17 . A method according to  claim 15 , wherein said polymer comprises nylon 6/66/612 and 6/69.  
     
     
         18 . A method according to  claim 15 , wherein said polymer comprises nylon 6/66/12.  
     
     
         19 . A method according to  claim 15 , wherein said speed is greater than about 2500 meters per minute.  
     
     
         20 . A method according to  claim 15 , wherein said speed is greater than about 3000 meters per minute.  
     
     
         21 . A fiber made by the method of  claim 15.

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