Disposable diaper with meandering leg hole stretch units
US9713555B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2013 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Jul 10, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/49092
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A disposable diaper 10 has sheet-like leg hole stretch units 100 that extend in a product lengthwise direction L in an area where leg hole concave units 35 are formed and are at least partially stretchable along a product lengthwise direction L. End edges in a product widthwise direction W of the leg hole stretch units 100 meander in the product lengthwise direction L. Distances between the end edges in the product widthwise direction W of the leg hole stretch units 100 and a center line CL change from a front waistline unit 20 toward a rear waistline unit 30. Provided are a plurality of inflection points where an amount of change in the distance starts decreasing instead of increasing and a plurality of inflection points where an amount of change in the distance starts increasing instead of decreasing, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.