Methods for forming a fluted composite

US7166190B2 · kind B2 · utility

Assignee

• National Institute for Strategic Technology Acquisition and Commercialization · US

Inventors

• Peter A. Graef · Tacoma, US
• Clifford R. Bolstad · Milton, US
• Fred B. Howard · Olalla, US
• Charles E. Miller · Kent, US
• Daniel Bunker · Northampton, US

Key dates

• Filing date: Feb 28, 2005
• Grant date: Jan 23, 2007
• Expiry date: Feb 28, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2013/530481
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Methods for forming an absorbent fibrous composite containing absorbent material dispersed in bands through the composite and along the composite's length are disclosed. The methods generally include depositing a fibrous slurry on a foraminous support to form a web and depositing or injecting absorbent material into the web across its width to provide a web having absorbent material in bands along the composite's length. Drying the web provides a fluted absorbent composite. In one embodiment, the method is a wetlaid method and in another embodiment, the method is a foam-forming method. Preferably, the methods are twin-wire forming methods.