Absorbent article having an absorbent with a variable density in the Z direction and a method of forming said article
US5611879A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1991 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Apr 15, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An absorbent article, such as a sanitary napkin, a diaper, training pants, an incontinent garment or a bedpad is disclosed for absorption of human exudate. The absorbent article includes an absorbent having a homogeneous composition with an essentially constant density in the x-y plane. The absorbent has at least two distinct portions which are integrally joined together by a junction line and each portion has a thickness different from an adjacent portion. The absorbent is folded on the junction line to obtain a variable density along the z axis. The folded absorbent also has a uniform capillary size in the x-y plane and a variable capillary size in the z direction. The absorbent article further includes a liquid-permeable cover which is positioned adjacent to at least one surface of the absorbent. A method of forming the article is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.