Evaluation of vessel picking tendency in printing

Sari Asikainen (Corresponding Author), Agneta Fuhrmann, Merja Kariniemi, Airi Särkilahti

Research output: Contribution to journalArticleScientificpeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)44-50
Number of pages6
JournalO Papel
Volume73
Issue number1
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Fingerprint

Kraft pulp
Pulp
Printing
Offset printing
Bleached pulp
Ink
Refining
Microscopic examination
Color

Keywords

  • chemical composition
  • fiber morphology
  • fractionation
  • refining
  • vessel picking

Cite this

Asikainen, S., Fuhrmann, A., Kariniemi, M., & Särkilahti, A. (2012). Evaluation of vessel picking tendency in printing. O Papel, 73(1), 44-50.
Asikainen, Sari ; Fuhrmann, Agneta ; Kariniemi, Merja ; Särkilahti, Airi. / Evaluation of vessel picking tendency in printing. In: O Papel. 2012 ; Vol. 73, No. 1. pp. 44-50.
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abstract = "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.",
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Asikainen, S, Fuhrmann, A, Kariniemi, M & Särkilahti, A 2012, 'Evaluation of vessel picking tendency in printing', O Papel, vol. 73, no. 1, pp. 44-50.

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 journalArticleScientificpeer-review

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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

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JO - O Papel

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Asikainen S, Fuhrmann A, Kariniemi M, Särkilahti A. Evaluation of vessel picking tendency in printing. O Papel. 2012;73(1):44-50.