Absorbent articles having an anisotropic foam acquisition layer

US11413197B2 · kind B2 · utility

Assignee

• ONTEX GROUP NV · BE

Inventors

• Annemie Houben · Evergem, BE
• Miguel Angel Rodríguez Pérez · Valladolid, ES
• Alberto López Gil · Valladolid, ES
• Josias Tirado Mediavilla · Palencia, ES
• Javier García González · Valladolid, ES
• Lieven Dhooge · Ertvelde, BE
• Ainas WEBER · Bad Neuenahr-Ahrweiler, DE

Key dates

• Filing date: Mar 17, 2020
• Grant date: Aug 16, 2022
• Expiry date: Mar 17, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L15/425
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention relates to acquisition layers for use in absorbent articles, preferably of the disposable personal hygiene type. It discloses absorbent articles (7) comprising a liquid permeable topsheet (8), a liquid impermeable backsheet (9), an absorbent core (1) between the topsheet (8) and the backsheet (9) and an acquisition layer (2) between the topsheet (8) and the absorbent core (1), said acquisition layer (2) having a width (w) and a length (l) along an acquisition plane and a thickness (t) extending perpendicular thereto. The absorbent core (1) comprises at least one absorbent material selected from the group consisting of fibrous absorbent materials and highly absorbent polymers. The acquisition layer (2) comprises a polymeric foam having an open cell and interconnected porous structure comprising an anisotropic cell structure having an axis of anisotropy (4) extending substantially parallel to a longest length of a plurality of substantially neighbouring cells (6), which is substantially perpendicular to the acquisition plane.