Absorbent composite structure formed of a substrate and cross-linkable hydrogel polymer particles

US5977014A · kind A · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Manfred Plischke · Rheinböllen, DE
• Mattias Schmidt · Idstein, DE
• Ebrahim Rezai · Kobe, JP

Key dates

• Filing date: Mar 10, 1997
• Grant date: Nov 2, 1999
• Expiry date: Mar 10, 2017

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2013/53791
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An absorbent composite structure suitable for absorbing aqueous body fluids is provided which includes a substrate having two surfaces, a plurality of hydrogel-forming polymer particles and a chemical cross-linking agent capable of bonding to both the substrate and the hydrogel-forming particles. In at least a substantial portion of the structure, the majority of the hydrogel-forming polymer particles are connected by the chemical cross-linking agent directly to at least one of the substrate surfaces. The absorbent composite structure can be incorporated into an absorbent article. A method of making the absorbent composite structure is also disclosed.