Liquid resistant face mask having surface energy reducing agent on an intermediate layer therein

US5706804A · kind A · utility

Assignee

• Minnesota Mining and Manufacturing Company · US

Inventors

• Nicholas R. Baumann · Windom, US
• John M. Brandner · Windom, US
• John A. Temperante · Windom, US
• Shannon L. Dowdell · Indianapolis, US
• Michael D. Romano · Circle Pines, US
• Scott J. Tuman · Woodbury, US
• Matthew T. Scholz · Woodbury, US

Key dates

• Filing date: Jan 31, 1997
• Grant date: Jan 13, 1998
• Expiry date: Jan 31, 2017

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A41D13/1115
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A face mask including a face-contacting layer, an outer cover layer, a polymeric microfiber mat disposed between the face-contacting layer and the outer cover layer, and a non-woven fibrous mat disposed between the face-contacting layer and the outer cover layer. The non-woven fibrous mat includes polymeric fibers and a surface energy reducing agent. The face-contacting layer, the cover layer, the polymeric microfiber mat, and the non-woven fibrous mat cooperate with each other to allow gas to pass through the mask while inhibiting the passage of liquid through the mask.