Stretchable sheet, worn article using the same, and stretchable sheet manufacturing apparatus
US10758428B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2017 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Sep 7, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24033
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A stretchable sheet 10 includes: a plurality of attached portions 3 spaced apart from each other in the direction of stretch Df, wherein the first surfaces 1f and 2f of a pair of sheets 1 and 2 are attached to each other by being welded without using an adhesive, at the attached portions 3, the attached portions 3 hold elastic members F, and the attached portions 3 extend in a direction Dp crossing the direction of stretch Df of the elastic members F; and a plurality of folds P that appear between the attached portions 3 while the elastic members F are shrunk, wherein a width W3 of the attached portions 3 in the direction of stretch Df is set to be 0.2 mm or more and less than 1.0 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.