Composite integral sheet of highly absorbent wrap material with hydrophobic water-vapor-permeable pellicle
US5480693A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1995 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | Jan 12, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite integral sheet of wrap material which includes a first layer of absorbent material containing fibers bearing foraminous hydrophobic water-vapor-permeable pellicles, a second layer of printable material and an impermeable pigmented polymer layer interposed between the first and second layers. Additionally, the absorbent layer will include highly absorbent material formed by in-situ crosslinking of a partially pre-neutralized polyacrylic acid. The composite wrap material has a plurality of air pockets formed between at least one of the first or second layers and the polymer layer, by discontinuously bonding the first or second layers to the polymer material. A method of making the composite integral sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.