Method of making an absorbent disposable article

US5013382A · kind A · utility

Assignee

• PAUL HARTMANN AG · DE

Inventors

• Krzysztof Nalowaniec · Heidenheim, DE
• Kurt Simmler · Heidenheim, DE

Key dates

• Filing date: Mar 31, 1988
• Grant date: May 7, 1991
• Expiry date: Mar 31, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/1097
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In an absorbent disposable article, such as in particular a diaper, in which an absorbent body is covered on one side by a liquid-impermeable protective sheet and on the opposite side by a porous layer, certain edge areas of the porous cover layer should be provided with a liquid-impermeable protective layer. This protective layer is formed as a prefabricated impervious sheet and possesses, before being placed on cover layer, on one side a smooth and the other side an extremely coarse surface. The impervious sheet serving as the protective layer penetrates essentially exclusively with its coarse surface areas inside the cover layer. Through the smooth side of this impervious sheet, an absolute imperviousness is assured. Because of the physical bond, which forms between the impervious sheet and the cover layer, the impervious sheet can be formed extremely thin, i.e., a minimum amount of material is sufficient for the impervious sheet. For only partial penetration of the impervious sheet into the cover layer, special manufacturing processes are indicated.