High-density absorbent structure
US6273996A · kind A · utility
20Cited by
6References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1998 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Mar 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/26
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Low-density uncreped through-air-dried webs containing bleached chemithermomechanical pulp fibers and a wet-strength resin are calendered to significantly increase density and reduce caliper. When wetted, these webs substantially return to their original caliper and density and substantially regain their original fluid-handling characteristics. Consequently these webs are very thin when dry and thick when wet. They can be used for a wide variety of applications, including paper towels, wipers and fluid-handling components for infant care and personal care products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.