Table 1.
Specifications of the used pulp grades.
| Type | Length-weighted average fibre length (mm) | Kappa number ISO 302:2004 |
Wood type |
|---|---|---|---|
| SW-BK | 2.368 | 0.5 | North American Softwood (spruce, pine, fir) |
| SW-UBK | 2.453 | 10.1 | European SW (spruce, pine, larch) |
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