Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 44-50 |
| Number of pages | 6 |
| Journal | O Papel |
| Volume | 73 |
| Issue number | 1 |
| Publication status | Published - 2012 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- chemical composition
- fiber morphology
- fractionation
- refining
- vessel picking
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Evaluation of vessel picking tendency in printing. / Asikainen, Sari (Corresponding Author); Fuhrmann, Agneta; Kariniemi, Merja; Särkilahti, Airi.
In: O Papel, Vol. 73, No. 1, 2012, p. 44-50.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Evaluation of vessel picking tendency in printing
AU - Asikainen, Sari
AU - Fuhrmann, Agneta
AU - Kariniemi, Merja
AU - Särkilahti, Airi
PY - 2012
Y1 - 2012
N2 - Bleached eucalyptus kraft pulps, Eucalyptus globulus and Eucalyptus grandis, were fractionated using a hydrocyclone (Bauer 3”) in order to enrich the vessel elements in one of the fractions. The vessel picking tendency was analyzed with a method developed at KCL. In this method, handsheets are printed with a full scale 4-colour sheet-fed offset printing machine using a commercial printing ink. The vessel picking printing test was performed on the unfractionated eucalyptus kraft pulps, the vessel-rich and the vesselpoor fractions. The picked particles were analyzed and counted using an image analyzer. The vessel picking printing test was also done on the vessel-rich fractions after a PFI mill beating at 2000 revolutions. Hydrocyclone separated the vessels according to their size and shape successfully. The microscopy analysis showed that vessels in the vessel-rich fraction were larger and more square-shaped than those in the vessel-poor pulp. The refining of the vessel-rich fraction decreased the vessel picking tendency to the same or even to a lower level than that of the unfractionated pulp.
AB - Bleached eucalyptus kraft pulps, Eucalyptus globulus and Eucalyptus grandis, were fractionated using a hydrocyclone (Bauer 3”) in order to enrich the vessel elements in one of the fractions. The vessel picking tendency was analyzed with a method developed at KCL. In this method, handsheets are printed with a full scale 4-colour sheet-fed offset printing machine using a commercial printing ink. The vessel picking printing test was performed on the unfractionated eucalyptus kraft pulps, the vessel-rich and the vesselpoor fractions. The picked particles were analyzed and counted using an image analyzer. The vessel picking printing test was also done on the vessel-rich fractions after a PFI mill beating at 2000 revolutions. Hydrocyclone separated the vessels according to their size and shape successfully. The microscopy analysis showed that vessels in the vessel-rich fraction were larger and more square-shaped than those in the vessel-poor pulp. The refining of the vessel-rich fraction decreased the vessel picking tendency to the same or even to a lower level than that of the unfractionated pulp.
KW - chemical composition
KW - fiber morphology
KW - fractionation
KW - refining
KW - vessel picking
M3 - Article
VL - 73
SP - 44
EP - 50
JO - O Papel
JF - O Papel
SN - 0031-1057
IS - 1
ER -