Fluid-absorbent article

US12042365B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Thomas Daniel · Waldsee, DE
• Christophe Bauduin · Ludwigshafen, DE
• Katrin Baumann · Mannheim, DE
• Katarzyna Dobrosielska-Oura · Ludwigshafen, DE

Key dates

• Filing date: Feb 12, 2018
• Grant date: Jul 23, 2024
• Expiry date: Dec 14, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2013/530708
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A fluid-absorbent article includes an upper liquid-pervious layer (A), a lower liquid-impervious layer (B), a fluid-absorbent core (C) between (A) and (B) including at least 60% by weight of non-surface postcrosslinked fluid-absorbent polymer particles and not more than 40% by weight of fibrous material, based on the sum of non-surface postcrosslinked fluid-absorbent polymer particles and fibrous material. An acquisition-distribution layer (D) between (A) and (C) includes at least 90% by weight of synthetic fibers and not more than 10% by weight of cellulose based fibers, based on the sum of synthetic fibers and cellulose based fibers. The basis weight of the acquisition-distribution layer (D) is at least 70 gsm. The fluid-absorbent polymer particles have a saline flow conductivity (SFC) of less than 5×10−7 cm3s/g and an AUHL of less than 15 g/g. Preferably the acquisition-distribution layer (D) is a non-woven web including a three dimensional network of fibers.