Super water-absorbent composite and method for preparation thereof
US6540853B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 18, 2001 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Jan 18, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2484
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An absorbent composite sheet mainly consisting of a fibrous substrate web, a super absorbent polymer, and a bonding component bonding both of them with each other, wherein (a) the fibrous substrate web is a non-bonded web with a few of the constituent fibers bonded with each other, (b) a liquid mixture system is used of a medium mainly consisting of the super absorbent polymer and the bonding component, (c) a composite web is formed by adding the liquid mixture system to the fibrous substrate web, and (d) a liquid component is separated from the composite web so that fixing of the super absorbent polymer to the fibrous substrate web and bonding of the webs of the fibrous substrate web with one another are carried out at the same time. Methods of manufacturing such absorbent composite sheets are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.