Bulky sheet and process for producing the same
US6936333B2 · kind B2 · utility
33Cited by
20References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2001 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Feb 13, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24628
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A bulky sheet comprising a fiber aggregate formed by water needling of a fiber web is disclosed. The bulky sheet has a number of projections and depressions comprising the fiber aggregate. The projections and the depressions is formed both by rearrangement of the constituting fibers of the fiber aggregate by water needling of the fiber aggregate and by the multiple bending manner of the fiber aggregate along the thickness direction thereof. The projections and the depressions retains the shape thereof by themselves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.