Self-bonded corrugated fibrous web

US7427434B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Ludwig Busam · Idstein, DE
• Martin Scaife · Singapore, SG
• Matthias Rudolf Sprehe · Bad Kötzting, DE
• Gabriele Stiehl · Schwalbach, DE

Key dates

• Filing date: Oct 20, 2003
• Grant date: Sep 23, 2008
• Expiry date: Oct 20, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24702
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A self-bonded corrugated web made from a primary pre-bonded web layer of thermoplastic fibers having a substantially uniform thickness. The primary pre-bonded web layer is arranged to form corrugations forming a corrugation pattern of parallel corrugation lines, which can be parallel to the longitudinal extension of the web. The corrugated web is heat- or melt-fusion bonded in regions forming a primary bonding pattern of a plurality of primary bonding pattern lines, which are arranged non-parallel to the corrugation lines and which intersect at least two of the corrugation lines, for stabilizing the corrugations.