Paper articles exhibiting water resistance and method for making same
US7666273B2 · kind B2 · utility
7Cited by
35References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2008 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Jul 2, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a process for preparing sized paper and paperboard which incorporates in the paper and paperboard at the size press size a composition comprising one or more “hydrophobic polymers” wherein hydrophobic polymers, the amount of such polymers and the weight ratio of starch to such polymer in the composition are selected such that the paper and paper board exhibits a Cobb Value equal to or less than about 25 and to a sized paper or paperboard web formed by the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.