Method for making dimensionally stable articles

US4081884A · kind A · utility

Assignee

• Dr. Carl Hahn G.m.b.H.

Inventors

• Wolfgang Johst
• Axel Friese · Wuppertal, DE
• Stefan Simon · Cologne, DE

Key dates

• Filing date: May 11, 1977
• Grant date: Apr 4, 1978
• Expiry date: May 11, 1997

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06C21/00
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method is provided for manufacturing a dimensionally stable compressed article such as an absorbent catamenial tampon comprising compressed cellulosic fibers. The method comprises the steps of first radially compressing a cylindrical blank to form a radially compressed blank having a length in excess of the desired finished length; then axially compressing the blank in a heated chamber to a length less than the desired finished length; then allowing the blank to expand to the desired finished length; and then maintaining the blank at this length while still in the heated chamber until the blank obtains the desired stability.