Multi-layer absorbent cores and methods of manufacture
US12390376B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2018 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Apr 1, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/53908
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Absorbent cores comprising a layered structure and methods of manufacture are disclosed. In one embodiment, an absorbent body may comprise a top layer comprising a liquid permeable web material, a bottom layer comprising a web material, and a reinforcement layer disposed between the top layer and the bottom layer. The absorbent body may further comprise a first absorbent layer disposed between the reinforcement layer and the bottom layer, the first absorbent layer comprising absorbent material which comprises substantially only superabsorbent material and a second absorbent layer disposed between the top layer and the reinforcement layer, the second absorbent layer comprising absorbent material which comprises absorbent material. The body may also comprise adhesive disposed between the top layer and the second absorbent layer, between the second absorbent layer and the reinforcement layer, and between the first absorbent layer and the bottom layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.