Method for improving fiber quality and process efficiency in mechanical pulping
US8262852B2 · kind B2 · utility
9Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2010 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Jul 8, 2030 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C3/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention provides a composition and method for improving a mechanical pulping process by decreasing freeness and amount of shives, providing energy and chemical savings, and enhancing brightness and mechanical strength of a paper product made from a pulp material in the process. The composition includes formulations, such as surfactants, chelants, hydrotropes, reductive and oxidative pulp modifiers, and pH-controlling chemicals. The method includes selectively introducing these formulations to the pulp material in the mechanical pulping process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.