Absorbent articles exhibiting improved internal environmental conditions
US5938648A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Dec 3, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B5/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to absorbent articles such as diapers, adult incontinence garments, and feminine hygiene products. The present invention further relates to such absorbent articles having outer coverings designed to provide breathability and promote more healthy internal environmental conditions for the wearer. More specifically, the present invention provides an absorbent article comprising (a) a topsheet; (b) a backsheet; and (c) an absorbent core located between the topsheet and the backsheet; wherein the backsheet comprises a non-porous, substantially fluid impermeable, moisture vapor permeable composite sheet material. Preferably, the composite sheet material is oriented such that the film layer of the composite sheet material faces toward said absorbent core. Where the film layer of the composite sheet comprises a substantially hydrophilic elastomer film layer, the substantially hydrophilic elastomer film is preferably located in contact with the fibrous substrate. Where the film layer of the composite sheet comprises a multiple layer film with a substantially hydrophilic elastomer film layer and a substantially hydrophobic elastomer film, the substantially hydro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.