Disposable diaper having facing layer with patterned preferential flow areas
US3934588A · kind A · utility
40Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1974 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Aug 20, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F13/51121
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A multi-layer diaper includes a porous facing layer to be positioned adjacent an infant's skin, and absorbent batt, and a water-impervious backing sheet. The facing layer is provided with areas of preferential liquid flow, surrounded by areas of increased water repellency relative to the areas of preferential liquid flow. The areas of preferential liquid flow are in the form of thinned areas, areas of increased wettability or areas of normal wettability surrounded by water repellent borders. The flow paths are spread over at least the central portion of the facing layer to direct liquid to the absorbent batt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.