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Strong paper from spruce CTMP – Part II: Effect of pressing at nip press temperatures above the lignin softening temperature
2018
Nordic Pulp & Paper Research Journal
The main objective of the current study was to demonstrate that it is possible to enhance strength properties of sheets from spruce HT-CTMP and CTMP furnishes up to the same level as is common on sheets from softwood kraft pulps by changing conditions in papermaking. To achieve that, sheets of spruce HT-CTMP and CTMP were consolidated at densities close to that of the reference bleach kraft pulp by pressing at press nip temperatures well above the tack and softening temperatures of lignin. On
doi:10.1515/npprj-2018-3009
fatcat:cf5j7newbvan5pw2a2txzbrasm