Abstract
Needling of formed kraft pulp at a dry content of 20% was previously shown to result in a redistribution of the fibres in the plane, resulting in local regions with a higher fibre structure density. The bending properties of a three-ply paperboard with a needled middle layer have been studied here, and it is shown that a needled middle layer can increase the bending resistance of a layered board by 8% and that the peak bending angle can be increased by up to 20%, although the bending stiffness may not be changed significantly. The needled middle layers had a higher compressive stiffness in the out-of-plane direction, but the effect of the needling on the tensile strength in the out-of-plane direction was insignificant.
Originalsprache | englisch |
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Seiten (von - bis) | 89-97 |
Seitenumfang | 9 |
Fachzeitschrift | Cellulose Chemistry and Technology |
Jahrgang | 52 |
Ausgabenummer | 1-2 |
Publikationsstatus | Veröffentlicht - 1 Jan. 2018 |
ASJC Scopus subject areas
- Organische Chemie
- Werkstoffchemie