Method for studying the deformation of a fibre web during a suction pulse
2008 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, Vol. 23, no 4, 398-402 p.Article in journal (Refereed) Published
A laboratory suction box was built to study the dynamic thickness deformation of a fibre web during a suction pulse. Both the pressure in the suction box and the duration of the suction pulse are adjustable in ranges of 0 to -40 kPa and 50 ms to 10 s, respectively During and after the suction pulse, the web thickness and the suction pressures can be measured. Furthermore, the air flow through the web can be calculated after the experiment.
The first evaluation of the performance of the laboratory suction box shows that the web is considerably compressed, especially during the initial phase of the suction pulse. This indicates that web compression is an important dewatering mechanism. After the suction pulse, a rapid and significant web expansion was observed, implying that considerable rewetting probably occurs.
Place, publisher, year, edition, pages
2008. Vol. 23, no 4, 398-402 p.
Suction box, Vacuum, Water removal, Compression, Displacement, Rewetting, Laboratory apparatus
Paper, Pulp and Fiber Technology
IdentifiersURN: urn:nbn:se:kth:diva-8556DOI: 10.3183/NPPRJ-2008-23-04-p398-402ISI: 000262102700007OAI: oai:DiVA.org:kth-8556DiVA: diva2:13912
QC 20100924. Uppdaterad från submitted till published (20100924).2008-06-022008-06-022010-09-24Bibliographically approved