Paper with improved stiffness and bulk and method for making same
US8460512B2 · kind B2 · utility
5Cited by
223References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2008 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Jun 27, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31982
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention provides a three layered reprographic paper having improved strength, stiffness and curl resistance properties, and a method for making same. The paper has a central core layer made largely of cellulose and bulked with a bulking agent such as a diamide salt. A starch-based metered size press coating is pressed on both sides of the core layer, wherein the starch has a high solid content. The coating forms a three layered paper having an I-beam arrangement with high strength outer layers surrounding a low density core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.