Patent Number: 6,309,988

Title: Biodisintegratable nonwovens with improved fluid management properties

Abstract: Disclosed is a biodisintegratable nonwoven material having improved fluid management properties. The biodisintegratable nonwoven material demonstrates a higher contact angle hysteresis, quicker intake times, and improved skin dryness as compared to prior art nonwoven materials. In addition, these biodisintegratable nonwoven materials also exhibit high wetting rates, which is unexpected based upon the higher hysteresis values. The nonwoven material may be produced using thermoplastic compositions which comprise an unreacted mixture of an aliphatic polyester polymer as a continuous phase, polyolefin microfibers as a discontinuous phase encased within the aliphatic polyester polymer continuous phase, and a compatibilizer for the aliphatic polyester polymer and the polyolefin microfibers. The multicomponent fiber exhibits substantial biodisintegratable properties and good wettability yet is easily processed. The biodisintegratable nonwoven materials may be used in a disposable absorbent product intended for the absorption of fluids such as body fluids.

Inventors: Tsai; Fu-Jya Daniel (Appleton, WI), Wertheim; Brigitte C. (Appleton, WI)

Assignee: Kimberly-Clark Worldwide, Inc.

International Classification: A61L 15/16 (20060101); A61L 15/22 (20060101); C08L 67/04 (20060101); C08L 67/00 (20060101); C08L 67/02 (20060101); D01F 6/92 (20060101); D01F 6/46 (20060101); D04H 1/42 (20060101); D04H 001/00 (); D04H 003/00 ()

Expiration Date: 10/30/2018