System for aperturing and coaperturing webs and web assemblies

US6837956B2 · kind B2 · utility

Assignee

• Kimberly-Clark Worldwide, Inc. · US

Inventors

• Christine Marie Cowell · Fond du Lac, US
• Richard W. Kubalek · Appleton, US
• Andrew Michael Lake · Combined Locks, US
• Jeffrey Dean Lindsay · Appleton, US
• Susan J. Moder · Appleton, US
• Shelley Rasmussen · Oshkosh, US
• Laura Walker · Appleton, US

Key dates

• Filing date: Nov 26, 2002
• Grant date: Jan 4, 2005
• Expiry date: Jul 25, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/133
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Improved aperturing of a web can be obtained by providing pins with an extended tapered section that is substantially convex in shape. When the tapered section is longer than the penetration depth of the pins into the receiving recesses of a female roll, frictional forces in the nip between layers are reduced. Pins with extended tapered sections can be used in devices for producing apertured composite web assemblies comprising sections of absorbent matter attached to a nonwoven web or other carrier layer.