Refined cellulose fiber composition
AssigneeStora Enso OYJ
InventorsUlla Jansson, Anders Moberg, Kaj Backfolk
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Abstract
The present invention relates to a refined cellulose fiber composition useful as a strength enhancing agent for paper and paperboard, wherein the refined cellulose fiber composition has a Schopper-Riegler (SR) number in the range of 80-98 as determined by standard ISO 5267-1, and wherein the refined cellulose fiber composition has a content of fibers having a length >0.2 mm of at least 12 million fibers per gram based on dry weight. The invention further relates to a method for preparing the refined cellulose fiber composition and to pulp paper and paperboard comprising the refined cellulose fiber composition.
Claims7
A refined cellulose fiber composition,
- wherein the refined cellulose fiber composition has a Schopper-Riegler (SR) number in the range of 80-98 as determined by standard ISO 5267-1, and
- wherein the refined cellulose fiber composition has a content of fibers having a length >0.2 mm in a range of 15 to 40 million fibers per gram based on a dry weight;
- and
- wherein said refined cellulose fibers are refined softwood cellulose fibers.
Dependencies are inferred from the claim text.