Method of producing a fiber product having a strength suitable for printing paper and packaging material
US6958108B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1999 |
| Grant date | Oct 25, 2005 |
| Priority date | — |
| Expiry date | Apr 30, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C9/005
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a modified fiber product and a method of producing same. According to the method, the cellulosic raw material is formed into a fiber suspension, into which components modifying the properties of the fibers are added, subsequent to which the fibrous material is dried in connection with, for example, web forming. According to the invention, alkyl derivative of cellulose is mixed into the fiber suspension in alkaline conditions, the derivative being at least partly dissolved in water, and the derivative is allowed to be sorbed into the fibrous material prior to drying such that the sorbed cellulose derivative can not be washed off with water. The strength properties or the water retention of paper and paperboard products can be improved by using the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.