Abstract
Speed of paper machines is often limited by the drainage
rate of the furnish and the mechanical properties of the
wet web, i.e. the tension and relaxation properties. In
this study, the effects of the fibre properties and fines
content on dewatering, dry and wet web properties were
determined. The share of long fibres decreased only
slightly when the pulp was refined in the Valley beater.
More fibre cutting occurred during refining in the ProLab
refiner. Tests showed that refining of pulp from SR20 to
SR30 and SR70 using a Valley beater or a ProLab refiner
increased the dewatering time. The wet and dry tensile
strength as well as the residual tension of the wet web
at 2% strain also increased. Removal of fines shortened
the dewatering time and decreased the wet and dry tensile
strength, and the residual tension compared to pulps
containing fines. Addition of fines increased the
dewatering time as well as the dry and wet tensile
strength. The fibre properties affected the residual
tension more than the fines content, while the fines
content was more important for the wet tensile strength
Original language | English |
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Title of host publication | PaperCon 2011 |
Publisher | TAPPI Press |
Pages | 448-455 |
ISBN (Print) | 978-161839443-9 |
Publication status | Published - 2011 |
MoE publication type | A4 Article in a conference publication |
Event | Paper Conference and Trade Show, PaperCon 2011 - Covington, United States Duration: 1 May 2011 → 4 May 2011 |
Conference
Conference | Paper Conference and Trade Show, PaperCon 2011 |
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Abbreviated title | PaperCon 2011 |
Country/Territory | United States |
City | Covington |
Period | 1/05/11 → 4/05/11 |