Absorbent structures comprising fluid storage members with improved ability to dewater acquisition/distribution members

US6551295B1 · kind B1 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Mattias Schmidt · Idstein, DE
• Gianfranco Palumbo · Bad Homburg vor der Höhe, DE

Key dates

• Filing date: Sep 12, 2000
• Grant date: Apr 22, 2003
• Expiry date: Sep 12, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2013/530817
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention is an absorbent structure to be used in absorbent articles, having at least a first region for acquisition/distribution of fluid and a second region for storage of fluid. The first region can contain materials which have a relatively high capillary desorption pressure, as the materials in the second region exhibit a sufficiently high capillary absorption pressure so as to still efficiently drain the first region.The first region material has a Capillary Sorption Desorption Height (CSDH 90) of more than 40 cm and the second region material satisfies at least one of following requirements:(a) an absorption capacity of at least 15 g/g at 35 cm in the capsorption test;(b) an absorption capacity of at least 15 g/g at 0 cm in the capsorption test and an absorption efficiency of at least 55% at 40 cm;(c) a Capillary Sorption Absorption height at 50% of its capacity at 0 cm absorption height (CSAH 50) of at least 35 cm in the capsorption test.