Sanitary napkin having three-dimensional structure
US7594905B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2005 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Feb 22, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F13/4758
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A sanitary napkin includes a napkin body containing a liquid absorbent layer and a three-dimensional structure is disposed on the skin-side surface of the napkin body. The three-dimensional structure is formed of a reinforcing member and a liquid-permeable sheet, and an elastic member is disposed along an apex to extend in a longitudinal direction. The reinforcing member has high-density portions and low-density portions alternating with each other in the longitudinal direction so that the apex can be shortened in the longitudinal direction by an elastic contractive force of the elastic member. Therefore, the napkin body can be easily kept curved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.