Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Successive twin-wire roll forming of two-ply paper with softwood kraft pulp and recycled pulp - Effect of kraftply formation on Z-strength
SCA, Sweden.
RISE - Research Institutes of Sweden, Bioeconomy, Papermaking and Packaging.
2017 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 32, no 4, p. 639-645Article in journal (Refereed) Published
Abstract [en]

Kraftliner and kraft-top liner typically consists of two or more plies that are formed separately and combined by couching. The Z-strength tends to be limited by the ply adhesion, and the softwood kraft pulp used is commonly refined beyond the optimum for tensile strength to ensure sufficient Z-strength. In this work, two-ply forming by successive twin-wire roll forming, was evaluated with moderately refined never-dried unbleached softwood kraft pulp and recycled pulp in different plies. Successive twin-wire roll forming involved two-sided roll forming of the first ply and onesided roll forming of the second ply directly onto the first ply. Two-sided roll forming of the recycled pulp and onesided roll forming of the kraft pulp was evaluated in parallel to the reversed combination. The Z-strength was found to be limited by the strength of the kraft ply rather than by the ply adhesion. The effect on Z-strength when changing headbox consistency or when going from one-sided to two-sided roll forming for the kraft ply was in agreement with results for single-ply forming. Besides the favorable findings for Z-strength, the results suggest that successive roll forming enables an efficient utilization of the tensile strength potential of the softwood kraft pulp. 

Place, publisher, year, edition, pages
De Gruyter Open Ltd , 2017. Vol. 32, no 4, p. 639-645
Keywords [en]
Formation, Forming sections, Kraft pulps, Liner boards, Multiply boards, Reclaimed fibers, Tensile strength, Z direction strength, Adhesion, Pulp refining, Recycling, Softwoods, Unbleached pulp, Wire, Forming section, Z-directions, Kraft pulp
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-38040DOI: 10.3183/NPPRJ-2017-32-04-p639-646Scopus ID: 2-s2.0-85052674686OAI: oai:DiVA.org:ri-38040DiVA, id: diva2:1297184
Available from: 2019-03-19 Created: 2019-03-19 Last updated: 2019-03-20Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus
By organisation
Papermaking and Packaging
In the same journal
Nordic Pulp & Paper Research Journal
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 5 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.35.8