Water-disintegratable fibrous sheet having layered structure and wiping sheet comprising the same
US6187141A · kind A · utility
45Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1998 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Sep 16, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2762
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A water-disintegratable fibrous sheet having a layered structure comprising: (a) at least one first fiber web comprising pulp of conifer and pulp of hardwood; (b) at least one second fiber web comprising pulp of conifer, having a content of pulp of hardwood less than that in said first fiber web or containing no pulp of hardwood, said first and second fiber webs forming said layered structure; and (c) a water-insoluble or water-swellable binder being added to at least one of said first and second fiber webs. The fibrous sheet excellent in water-disintegratability and strength can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.