Underpants-type disposable diaper and production method therefor
US10470944B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2015 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Nov 3, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F13/49011
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A main object of the present invention is to improve the fit of edge portions of an outer body around the legs. In at least one of the ventral side outer part and the dorsal side outer part, parts at a lower edge of a side edge correspondence region corresponding to side edge portions in a front-back direction, positioned on the both width direction sides of an inner body, constitute edges of leg openings, a lower part of the side edge correspondence region is set as a folded part that is folded once or plural times in a zigzag manner in the front-back direction and fixed at the side edge portions, the folded part is gradually unfolded downward with increasing proximity to the width-direction central side, and the folded part is fixed in a halfway or completely downward unfolded state to the inner body at the width direction central portion, and elongated oblique resilient and elastic members are fixed in an extended state in a direction from the folded part to the side edges of the inner body below the folded part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.