Tear resistant porous extensible web
US6452063B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1999 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | May 25, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24298
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention pertains to a porous, macroscopically-expanded, three-dimensional, elastomeric web suitable for use in disposable absorbent articles such as bandages, diapers and pull-up diaper training pants, as well as a method for making the web. In a preferred embodiment the web has a continuous first surface and a discontinuous second surface remote front first surface. In a preferred embodiment the elastomeric web exhibits a multiplicity of primary apertures in the first surface of the web, the primary apertures being defined in the plane of the first surface by a continuous network of interconnecting members. Each interconnecting member exhibits an upwardly concave-shaped cross-section along its length. The interconnecting members terminate substantially concurrently with one another to form a secondary aperture in the plane of the second surface of the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.