Absorbent materials having improved fluid intake and lock-up properties

US6689934B2 · kind B2 · utility

Assignee

• Kimberly-Clark Worldwide, Inc. · US

Inventors

• Richard Norris Dodge, II · Appleton, US
• Nancy Lange · San Francisco, US
• Jayant Chakravarty · Woodbury, US
• Jian Qin · Appleton, US
• Sridhar Ranganathan · Suwanee, US
• Fu-Jya Tsai · Alpharetta, US
• Cathleen Mae Uttecht · Menasha, US
• Xiaomin Zhang · Charlotte, US

Key dates

• Filing date: Nov 8, 2002
• Grant date: Feb 10, 2004
• Expiry date: Nov 8, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/699
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Disclosed are absorbent composites, useful in an absorbent article, having high liquid intake rates. The absorbent composites may also have a rapid liquid lock-up. Absorbent composites of this invention have an intake rate of at least about 1.9 cc liquid/second at an 80% absorbent composite saturation level and a liquid lock-up fraction of at least about 0.70 at 50% superabsorbent material saturation. The absorbent composites of this invention can be a freeze-dried composite, an airformed absorbent composite, or other fibrous or non-fibrous absorbent composites.