US2005079785A1PendingUtilityA1

Fibers comprising starch and polymers

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Priority: May 10, 2001Filed: Oct 5, 2004Published: Apr 14, 2005
Est. expiryMay 10, 2021(expired)· nominal 20-yr term from priority
Inventors:Eric Bryan BondJean-Philippe Marie AutranLarry Neil MackeyIsao NodaHugh Joseph O'DonnellDean Van Phan
D01F 6/46D01F 6/92Y10T428/2927Y10T442/60Y10T428/2969D01F 6/50Y10T428/249924Y10T428/24994D04H 1/42D01F 6/52D01F 6/90Y10T428/2913
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Claims

Abstract

The present invention is directed to highly attenuated fibers produced by melt spinning a composition comprising destructurized starch, a thermoplastic polymer, and a plasticizer. The present invention is also directed to highly attenuated fibers containing microfibrils which are formed within the starch matrix. Nonwoven webs and disposable articles comprising the highly attenuated fibers are also disclosed.

Claims

exact text as granted — not AI-modified
1 . A nonwoven web comprising highly attenuated fiber comprising: 
 a. destructurized starch;    b. a thermoplastic polymer, and    c. a plasticizer.    
     
     
         2 . A nonwoven web wherein the highly attenuated fibers of  claim 1  are blended with other synthetic or natural fibers and bonded together.  
     
     
         3 . A disposable article comprising the nonwoven web of  claim 1 .  
     
     
         4 . A nonwoven web comprising highly attenuated fiber consisting of: 
 a. from about 5% to about 85% of destructurized starch,    b. from about 15% to about 90% of a thermoplastic polymer having a molecular weight of from about 5,000 g/mol to about 500,000 g/mol, and    c. from about 2% to about 70% of a plasticizer,    wherein thermoplastic polymer microfibrils are formed within the starch matrix in the highly attenuated fiber.    
     
     
         5 . A nonwoven web wherein the highly attenuated fibers of  claim 4  are blended with other synthetic or natural fibers and bonded together.  
     
     
         6 . A disposable article comprising the nonwoven web of  claim 4 .  
     
     
         7 . A nonwoven web comprising highly attenuated fibers comprising destructurized starch, a thermoplastic polymer having a molecular weight of from about 5,000 g/mol to about 500,000 g/mol, and a plasticizer.  
     
     
         8 . A nonwoven web wherein the highly attenuated fibers of  claim 7  are blended with other synthetic or natural fibers and bonded together.  
     
     
         9 . A disposable article comprising the nonwoven web of  claim 7.

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