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Beghello, Luciano
Publications (10 of 17) Show all publications
Land, C., Stolpe, L., Wahlström, T. & Beghello, L. (2011). MD strain and bagginess due to calendering. Nordic Pulp & Paper Research Journal, 26(1), 106-117
Open this publication in new window or tab >>MD strain and bagginess due to calendering
2011 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 26, no 1, p. 106-117Article in journal (Refereed) Published
National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-6523 (URN)10.3183/NPPRJ-2011-26-01-p106-117 (DOI)000293770200011 ()
Available from: 2010-11-04 Created: 2010-11-04 Last updated: 2017-12-12Bibliographically approved
Land, C., Beghello, L., Stolpe, L. & Wahlström, T. (2010). Baggy paper webs - an evaluation of some suggested problem sources. Paper presented at Progress in Paper Physics Seminar 2010. Paper presented at Progress in Paper Physics Seminar 2010.
Open this publication in new window or tab >>Baggy paper webs - an evaluation of some suggested problem sources
2010 (English)Conference paper, Published paper (Other (popular science, discussion, etc.))
National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-9969 (URN)
Conference
Progress in Paper Physics Seminar 2010
Projects
Baggy paper webs / Slappa och spända stråk i pappersbanor
Available from: 2012-02-08 Created: 2012-02-08 Last updated: 2013-06-12Bibliographically approved
Järnström, L., Beghello, L. & Emilsson, P. (2010). Comparison between a curved soft tip metering element and a conventional blade in the coating of paperboard. In: : . Paper presented at TAPPI Coating and Graphic Arts Conference (PaperCon'10), Atlanta, GA, USA May 2-5, 2010.
Open this publication in new window or tab >>Comparison between a curved soft tip metering element and a conventional blade in the coating of paperboard
2010 (English)Conference paper, Published paper (Refereed)
National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-10000 (URN)
Conference
TAPPI Coating and Graphic Arts Conference (PaperCon'10), Atlanta, GA, USA May 2-5, 2010
Available from: 2012-02-08 Created: 2012-02-08 Last updated: 2015-10-22Bibliographically approved
De Magistris, F., Germgård, U., Beghello, L., Järnström, L. & Lestelius, M. (2010). Effect of calendering on the compressibility of papers made with fibre of various properties. In: : . Paper presented at Progress in paper physics seminar 2010, Montreal, Canada, 7-10 June 2010.
Open this publication in new window or tab >>Effect of calendering on the compressibility of papers made with fibre of various properties
Show others...
2010 (English)Conference paper, Published paper (Other (popular science, discussion, etc.))
Abstract [en]

The surface and bulk compressibility of a given paper influence its calendering, coating, surface sizing and printing properties. This study aims at a deeper knowledge of which variable affects the compressibility of paper sheets and how calendering effect different sheet properties. The pulps were characterized by their chemical compositions and physical properties. The bulk compressibility, the surface compressibility and the thickness were evaluated both before and after calendering

National Category
Chemical Engineering Energy Systems
Research subject
Chemical Engineering; Environmental and Energy Systems
Identifiers
urn:nbn:se:kau:diva-9928 (URN)
Conference
Progress in paper physics seminar 2010, Montreal, Canada, 7-10 June 2010
Available from: 2012-02-08 Created: 2012-02-08 Last updated: 2015-10-22Bibliographically approved
Karlsson, H., Stolpe, L., Beghello, L. & Nilsson, L. (2010). Paper strength of both stratified and homogeneous sheets with selected fibres: Part II: Effect of refining..
Open this publication in new window or tab >>Paper strength of both stratified and homogeneous sheets with selected fibres: Part II: Effect of refining.
2010 (English)Manuscript (preprint) (Other academic)
Abstract [en]

The effect on the tensile strength and tearing resistance of refining one of the pulps in mixed and stratified sheets composed of two pulps was examined. The aim was to see whether the stratification has a positive effect on the tensile-tear relationship, or whether the same effect can be reached by adjusting the degree of refining of the pulps. Moderately refined, fractionated abaca (Musa textilis) pulp with a high tearing resistance potential was added to a Swedish softwood sulfate pulp. The softwood pulp was refined to three different dewatering resistances. It was shown that by stratifying the sheets consisting of 50wt% abaca and 50wt% softwood, the tensile index can be increased by refining the softwood pulp while the tearing resistance is retained. The effect of stratification on the tensile-tear relationship thus differs from the effect of refining. However, for sheets composed of 17wt% abaca and 83wt% softwood, no effect of the stratification was observed. The effect of stratification with different amounts of abaca was also examined. In general, the tensile and tear indices of mixed as well as stratified sheets were close to the results predicted by linear mass fraction additivity. However the stratified sheets showed a slightly lower tensile index than predicted and the mixed sheets a slightly higher tensile index.

National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-5615 (URN)
Available from: 2010-05-03 Created: 2010-05-03 Last updated: 2019-05-02Bibliographically approved
Karlsson, H., Stolpe, L., Beghello, L. & Nilsson, L. (2010). Paper strength of both stratified and homogeneous sheets with selected fibres: Part I: Effect of fibre properties..
Open this publication in new window or tab >>Paper strength of both stratified and homogeneous sheets with selected fibres: Part I: Effect of fibre properties.
2010 (English)Manuscript (preprint) (Other academic)
Abstract [en]

The effect on paper strength of placing different types of fibres in separate layers instead of homogeneously mixing the fibres was examined. The aim was to displace the tensile‑tear relationship towards higher strength values. Two‑layer laboratory sheets were made in a multilayer handsheet former and compared to single‑layer sheets made from a homogeneous mixture of the two pulps. Fibres with high coarseness (southern pine) and fibres with a high fibre length (abaca, Musa textilis) were added to a Swedish softwood sulfate pulp. Placing the different fibres in separate layers was shown to give a higher tearing resistance but a lower tensile strength than mixing the fibres. The sheets containing southern pine showed results as expected, based on linear mass fraction additivity and the differences in density between the sheets, whereas the sheets containing abaca indicated a synergism for tensile strength in the mixed sheets. The results are discussed with respect to differences in load distribution in the sheets during the tensile and tear tests. It is suggested that the high tear index of the stratified sheets is because the degree of bonding is at a low level in the southern pine and abaca layers, while the high tensile index of the stratified sheets is a result of an increased activation of the additive fibres in the network together with the more flexible softwood fibres. Fibre length seems to be more important than fibre coarseness for achieving a positive effect on paper strength of stratification.

National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-5614 (URN)
Available from: 2010-05-03 Created: 2010-05-03 Last updated: 2019-05-02Bibliographically approved
Land, C., Wahlström, T., Stolpe, L. & Beghello, L. (2010). Plastic strain of moisture streaks at different moisture contents. Nordic Pulp & Paper Research Journal, 25(4), 481-487
Open this publication in new window or tab >>Plastic strain of moisture streaks at different moisture contents
2010 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 25, no 4, p. 481-487Article in journal (Refereed) Published
Abstract [en]

An uneven moisture profile in the paper web during drying can cause runnability problems due to slack areas in the paper web. This study aims at indentifying the moisture level at which it is most important to keep the moisture even. This was evaluated with a laboratory study of plastic strain after loading wet paper samples to strains between 0.3-4% and unloading. The papers tested were made from softwood bleached kraft pulp and the moisture content varied between 9 and 50%. The plastic strain was highest at a moisture content of 20-30%, but the sensitivity to moisture variations was highest at a moisture content of 10-20%. The paper was also sensitive to moisture variations above a moisture content of 30%.

According to calculations based on the laboratory results, moist streaks appearing at a high moisture content would turn into short streaks, and moist streaks appearing at a low moisture content would turn into long streaks. A machine trial with moist streaks applied at high moisture resulted in short streaks in the paper, confirming the qualitative results of the laboratory study.

Keywords
baggy web, draw, moisture, paper, plasticity, strain
National Category
Paper, Pulp and Fiber Technology
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-6432 (URN)10.3183/NPPRJ-2010-25-04-p481-487 (DOI)000285701900009 ()
Available from: 2010-09-30 Created: 2010-09-29 Last updated: 2017-12-12Bibliographically approved
Boudreau, J. & Beghello, L. (2009). A Method of Measuring the Thickness of the Coating on a Dryer Cylinder. Nordic Pulp & Paper Research Journal, 24(3), 309-312
Open this publication in new window or tab >>A Method of Measuring the Thickness of the Coating on a Dryer Cylinder
2009 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 24, no 3, p. 309-312Article in journal (Refereed) Published
National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-3814 (URN)10.3183/NPPRJ-2009-24-03-p309-312 (DOI)
Available from: 2009-03-19 Created: 2009-03-19 Last updated: 2017-12-13Bibliographically approved
Boudreau, J., Hollmark, H. & Beghello, L. (2009). Chemical and Morphological Analyses of the Tissue Yankee Coating. Nordic Pulp & Paper Research Journal, 24(1), 52-59
Open this publication in new window or tab >>Chemical and Morphological Analyses of the Tissue Yankee Coating
2009 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 24, no 1, p. 52-59Article in journal (Refereed) Published
National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-3813 (URN)10.3183/NPPRJ-2009-24-01-p052-059 (DOI)
Available from: 2009-03-19 Created: 2009-03-19 Last updated: 2017-12-13Bibliographically approved
Karlsson, H., Nilsson, L., Beghello, L. & Stolpe, L. (2009). Handsheet former for the production of stratified sheets. Appita journal, 62(4), 272-278
Open this publication in new window or tab >>Handsheet former for the production of stratified sheets
2009 (English)In: Appita journal, ISSN 1038-6807, Vol. 62, no 4, p. 272-278Article in journal (Refereed) Published
National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-1908 (URN)
Available from: 2007-10-08 Created: 2007-10-08 Last updated: 2019-03-12Bibliographically approved
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