Breathable backsheet, absorbent articles, and methods
US10774475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2016 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Aug 20, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2555/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present disclosure includes cellulosic fiber barrier layer having a hydrophobic sizing to cause the barrier layer to exhibit hydrophobic properties. For example, the present cellulosic fiber barrier layers can be configured to have a high hydrostatic head (e.g., more than 200 mm H2O) while retaining a high air permeability (e.g., 0.5 ft3/min-ft2). The present disclosure also includes laminates (e.g., a breathable backsheet assembly) including one of the present cellulosic fiber barrier layers and a nonwoven support layer positioned beneath and coupled (e.g., bonded) to the barrier layer, such that the laminate is configured to exhibit desirable liquid-barrier performance (e.g., pinhole-free performance at 400 mm H2O for 10 minutes, and/or the like). The present disclosure also includes disposable absorbent garments including at least one of the present cellulosic fiber layers and laminates (e.g., including one of the present laminates as a backsheet for the disposable absorbent garment).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.