Method of making a cellulosic absorbent sheet
US8568560B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2012 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | May 1, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249965
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of making a cellulosic absorbent sheet. A cellulosic web is prepared from an aqueous papermaking furnish. The web is fabric-creped. The fabric-creping step forms a creped web with a drawable reticulum having a plurality of interconnected regions of different local basis weights including at least: (i) a plurality of fiber-enriched regions of a relatively high local basis weight, interconnected by way of (ii) a plurality of lower local basis weight linking regions. The drawable reticulum includes a cohesive fiber matrix capable of increasing in void volume upon drawing. The creped web is dried, while substantially preserving the drawable reticulum, to form a dried web, and the dried web is drawn. The drawing step increases the bulk of the dried web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.