Papermaking process employing carboxylated cellulosic fibers
US8968518B2 · kind B2 · utility
0Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2013 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Aug 28, 2033 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/67
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A papermaking process includes, firstly, providing carboxylated cellulosic fibers with a carboxyl group content being in the range from 0.06 to 1.5 mmol/g. Then the carboxylated cellulosic fibers are employed to prepare mixing pulp including filler particles, wherein the content of the carboxylated cellulosic fibers in the mixing pulp is in the range from 40% to 100% by dry fiber weight of the mixing pulp. After that, paper is made employing the mixing pulp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.