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Höglund, Hans
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Publications (10 of 69) Show all publications
Höglund, H., Pettersson, G., Norgren, S. & Engstrand, P. (2018). A paper or paperboard product comprising at least one ply containing high yield pulp and its production method. se 540115 C2.
Open this publication in new window or tab >>A paper or paperboard product comprising at least one ply containing high yield pulp and its production method
2018 (English)Patent (Other (popular science, discussion, etc.))
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:miun:diva-33506 (URN)
Patent
SE 540115 C2
Note

International application WO 2018054957 A1.

Available from: 2018-04-17 Created: 2018-04-17 Last updated: 2018-04-17Bibliographically approved
Pettersson, G., Norgren, S. & Höglund, H. (2017). Strong paper from spruce CTMP - Part I. Nordic Pulp & Paper Research Journal, 32(1), 54-58
Open this publication in new window or tab >>Strong paper from spruce CTMP - Part I
2017 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 32, no 1, p. 54-58Article in journal (Refereed) Published
Abstract [en]

This study was carried out on sheets from spruce CTMP fibers, which are surface treated with a mix of cationic starch and CMC and blended with 20% bleach softwood chemical pulp fibers before handsheets were prepared in a Rapid Köthen sheet former, where the sheets were dried to 40-55% d.c. The sheets were pressed in a hot press nip in a pilot machine with adjustable pressure and heat. Both low and high nip pressure were used in combination with two different nip temperatures, 80°C and 100°C, to achieve sheets in a broad range of densities. The results show that remarkable improvements are possible, both in terms of tensile index (up to 85 kNm/kg) and compression strength, SCT, (up to 38 kNm/kg) on the CTMP-based sheets under optimal conditions at papermaking, i.e. consolidate the sheet structure in a press nip at evaluated temperatures. It is evident from the current study that there is an as of yet unexploited potential in modifying the conditions of papermaking from spruce CTMP furnishes, which can be utilized for the manufacturing of papers with high requirements on strength and stiffness, e.g. packaging papers.

Keyword
Adsorption, CMC, CTMP, Heat, Polyelectrolytes, Pressure, Starch, Tensile index
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-30664 (URN)10.3183/NPPRJ-2017-32-01-p054-058 (DOI)000398384400007 ()2-s2.0-85016441688 (Scopus ID)
Available from: 2017-04-26 Created: 2017-04-26 Last updated: 2017-06-09Bibliographically approved
Pettersson, G., Norgren, S., Höglund, H. & Engstrand, P. (2016). Low energy CTMP in strong and bulky paperboard plies. In: Paper Conference and Trade Show, PaperCon 2016: . Paper presented at Paper Conference and Trade Show, PaperCon 2016, 15 May 2016 through 18 May 2016, Cincinnati; United States (pp. 556-564). TAPPI Press, 1
Open this publication in new window or tab >>Low energy CTMP in strong and bulky paperboard plies
2016 (English)In: Paper Conference and Trade Show, PaperCon 2016, TAPPI Press, 2016, Vol. 1, p. 556-564Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
TAPPI Press, 2016
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-30112 (URN)2-s2.0-85010465464 (Scopus ID)9781510831193 (ISBN)
Conference
Paper Conference and Trade Show, PaperCon 2016, 15 May 2016 through 18 May 2016, Cincinnati; United States
Available from: 2017-02-14 Created: 2017-02-14 Last updated: 2017-02-14Bibliographically approved
Pettersson, G., Norgren, S. & Höglund, H. (2016). Strong paper from spruce CTMP. In: International Mechanical Pulping Conference 2016, IMPC 2016: . Paper presented at International Mechanical Pulping Conference 2016, IMPC 2016; Jacksonville; United States; 26 September 2016 through 28 September 2016 (pp. 229-233). TAPPI Press
Open this publication in new window or tab >>Strong paper from spruce CTMP
2016 (English)In: International Mechanical Pulping Conference 2016, IMPC 2016, TAPPI Press, 2016, p. 229-233Conference paper, Published paper (Refereed)
Abstract [en]

This study was carried out on sheets from spruce CTMP fibers, which are surface treated with a mix of cationic starch and CMC and blended with 20% bleach softwood chemical pulp fibers before handsheets were prepared in a Rapid Kothen sheet former, where the sheets were dried to 40-55% d.c. The sheets were pressed in a hot press nip in a pilot machine with adjustable pressure and heat. Both low and high nip pressure were used in combination with two different nip temperatures, 80 °C and 100 °C, to achieve sheets in a broad range of densities. The results show that remarkable improvements are possible, both in terms of tensile index (up to 85 kNm/kg) and compression strength, SCT, (up to 38kNm/kg) on the CTMP-based sheets under optimal conditions at papermaking, i.e. consolidate the sheet structure in a press nip at evaluated temperatures. It is evident from the current study that there is an as of yet unexploited potential in modifying the conditions of papermaking from spruce CTMP furnishes, which can be utilized for the manufacturing of papers with high requirements on strength and stiffness, e.g. packaging papers.

Place, publisher, year, edition, pages
TAPPI Press, 2016
Keyword
CMC, CTMP, Heat, Polyelectrolytes, Pressure, Starch, Tensile index Adsorption
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-29836 (URN)2-s2.0-85006415447 (Scopus ID)9781510830738 (ISBN)
Conference
International Mechanical Pulping Conference 2016, IMPC 2016; Jacksonville; United States; 26 September 2016 through 28 September 2016
Available from: 2017-01-09 Created: 2017-01-09 Last updated: 2017-04-26Bibliographically approved
Pettersson, G., Höglund, H., Norgren, S., Sjöberg, J., Peng, F., Hallgren, H., . . . Solberg, D. (2015). Strong and bulky paperboard sheets from surface modified CTMP, manufactured at low energy. Nordic Pulp & Paper Research Journal, 30(2), 318-324
Open this publication in new window or tab >>Strong and bulky paperboard sheets from surface modified CTMP, manufactured at low energy
Show others...
2015 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 30, no 2, p. 318-324Article in journal (Refereed) Published
Abstract [en]

A description is given regarding methods used to manufacture strong and bulky sheets from furnishes based on a broad range of surface modified CTMP qualities. Starch and CMC are adsorbed on the fibre surfaces using a multilayer or a MIX concept. It is shown that both the in-plane and out-of-plane strength for the CTMP based sheets after such surface treatment can be more than doubled at a maintained density. This can be utilized to improve bending stiffness or to reduce the basis weight in multi-ply paperboards.

Keyword
CTMP, Starch, CMC, Multilayer, Paperboard, Strength properties
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-25692 (URN)000354806700018 ()2-s2.0-84945899503 (Scopus ID)
Available from: 2015-08-21 Created: 2015-08-18 Last updated: 2017-08-10Bibliographically approved
Norgren, S. & Hoglund, H. (2014). Consolidation of fibre-fibre bonds in TMP and CTMP based papers. Paper Technology, 55(3), 6-10
Open this publication in new window or tab >>Consolidation of fibre-fibre bonds in TMP and CTMP based papers
2014 (English)In: Paper Technology, ISSN 0958-6024, Vol. 55, no 3, p. 6-10Article in journal (Other academic) Published
Abstract [en]

TMP and CTMP fibres are viscoelastic materials, which behave very differently at different temperatures and loading rates, should also be considered in papermaking. The positive effects of increased web temperature on dewatering and web consolidation (sheet strength) in pressing and drying of TMP/CTMP based papers have been known for some time. However, the effects of dry content during such conditions are less closely investigated. In this paper the effect of dry content on fibre-fibre bonds in consolidation of paper webs during press drying at high temperature is discussed. It is shown that the final paper strength is especially positively affected when a Z-directionalpressure is applied in the dryness range 50-75%.

National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:miun:diva-22632 (URN)2-s2.0-84904868180 (Scopus ID)
Note

CODEN: PATEE

Available from: 2014-09-22 Created: 2014-08-20 Last updated: 2014-09-22Bibliographically approved
Norgren, S., Pettersson, G. & Höglund, H. (2014). High strength papers from high yield pulps. In: International Mechanical Pulping Conference, IMPC 2014: . Paper presented at International Mechanical Pulping Conference, IMPC 2014; Helsinki; Finland; 2 June 2014 through 5 June 2014; Code 109275.
Open this publication in new window or tab >>High strength papers from high yield pulps
2014 (English)In: International Mechanical Pulping Conference, IMPC 2014, 2014Conference paper, Published paper (Refereed)
Abstract [en]

The positive effects changing the present standard conditions regarding temperature and moisture content during pressing and drying in papermaking of high yield pulp furnishes, such as those from TMP and CTMP, has previously been reported in a series of studies at Mid Sweden University. In the current study, the effects of fibre surface modification by starch/CMC at press-drying conditions have been investigated. It is shown how the strength properties of sheets from HTCTMP, manufactured at very low electric energy consumption (approximately 600 kWh/ton), can be radically improved by several hundred percent at optimum papermaking conditions.

Series
International Mechanical Pulping Conference, IMPC 2014
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-24067 (URN)2-s2.0-84923974435 (Scopus ID)9780000000002 (ISBN)
Conference
International Mechanical Pulping Conference, IMPC 2014; Helsinki; Finland; 2 June 2014 through 5 June 2014; Code 109275
Note

Export Date: 7 January 2015

Available from: 2015-01-08 Created: 2015-01-07 Last updated: 2015-08-12Bibliographically approved
Pettersson, G., Höglund, H., Sjöberg, J. C., Peng, F., Bergström, J., Solberg, D., . . . Ljungqvist, C.-H. -. (2014). Strong and bulky paperboard plies from low energy CTMP. In: International Mechanical Pulping Conference, IMPC 2014: . Paper presented at International Mechanical Pulping Conference, IMPC 2014; Helsinki; Finland; 2 June 2014 through 5 June 2014; Code 109275.
Open this publication in new window or tab >>Strong and bulky paperboard plies from low energy CTMP
Show others...
2014 (English)In: International Mechanical Pulping Conference, IMPC 2014, 2014Conference paper, Published paper (Refereed)
Abstract [en]

A description is given regarding methods used to manufacture strong and bulky sheets from furnishes based on a broad range of surface modified CTMP qualities. Starch and CMC are adsorbed on the fibre surfaces using a multilayer or a MIX concept. It is shown that both the in-plane and out-of-plane strength for the CTMP based sheets after such surface treatment can be more than doubled at a maintained density. This can be utilized to improve bending stiffness or to reduce the basis weight in multi-ply paperboards.

National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-24070 (URN)2-s2.0-84924007797 (Scopus ID)9780000000002 (ISBN)
Conference
International Mechanical Pulping Conference, IMPC 2014; Helsinki; Finland; 2 June 2014 through 5 June 2014; Code 109275
Note

Export Date: 7 January 2015

Available from: 2015-01-08 Created: 2015-01-07 Last updated: 2015-08-12Bibliographically approved
Norgren, S. & Höglund, H. (2011). Consolidation of fibre-fibre bonds in TMP and CTMP based papers. In: PROCEEDING OF INTERNATIONAL MECHANICAL PULPING CONFERENCE 2011: . Paper presented at International Mechanical Pulping Conference 2011, Xian, Peoples R China, Jun 26-29, 2011 (pp. 448-453).
Open this publication in new window or tab >>Consolidation of fibre-fibre bonds in TMP and CTMP based papers
2011 (English)In: PROCEEDING OF INTERNATIONAL MECHANICAL PULPING CONFERENCE 2011, 2011, p. 448-453Conference paper, Published paper (Refereed)
Abstract [en]

TMP and CTMP fibres are viscoelastic materials, which behave very differently at different temperatures and loading rates, which should to be considered also in papermaking. The positive effects of increased web temperature on dewatering and web consolidation (sheet strength) in pressing and drying of TMP/CTMP based papers are well known since a long time. However, the effects of dry content during such conditions are less closely investigated. In this paper the effect of dry content on fibre-fibre bonds in consolidation of paper webs during press drying at high temperature is discussed. It is shown that the final paper strength is especially positively affected when a Z-directional pressure is applied in the dryness range 50%similar to 75 %.

National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-22692 (URN)000308615200100 ()978-7-5019-8251-6 (ISBN)
Conference
International Mechanical Pulping Conference 2011, Xian, Peoples R China, Jun 26-29, 2011
Available from: 2014-08-31 Created: 2014-08-31 Last updated: 2014-08-31Bibliographically approved
Logenius, L., Agnemo, R. & Höglund, H. (2010). A study of the formation and elimination of chromophores in wood under mechanical pulping conditions using spectroscopy. Paperi ja puu - Paper and timber, 92(5), 35-39
Open this publication in new window or tab >>A study of the formation and elimination of chromophores in wood under mechanical pulping conditions using spectroscopy
2010 (English)In: Paperi ja puu - Paper and timber, ISSN 0031-1243, Vol. 92, no 5, p. 35-39Article in journal (Refereed) Published
Abstract [en]

Thin sections of wood, i.e., shavings, were used in spectroscopic measurements studying the formation and elimination of chromophores under mechanical pulping conditions. Light absorption coefficients, light scattering coefficients, and brightness were monitored.The method was applied to study how temperature in the absence of mechanical energy affects wood brightness. An increase in absorption coefficient at 420 nm indicates formation of ortho-quinone structures. By applying mechanical pulp processing conditions, the light absorption coefficient increased in the 400-500-nm wavelength region, probably due to the formation of chromophores in the lignin. Comparison of heat treated wood shavings with mechanical pulps indicated that additional chromophores were created during the mechanical pulping processes.The method was also used in studying how high-temperature hydrogen peroxide bleaching of the wood shavings affects the light absorption coefficients. The light absorption spectra reveal information about chromophore elimination in wood chemical components during hydrogen peroxide bleaching at slightly pressurized conditions. This is relevant to processes, such as the alkaline peroxide mechanical pulp process, in which the wood chips are impregnated with bleaching chemicals before refining. The easy penetration of chemicals into the wood shavings ensures rapid and even distribution of the treatment chemicals. A change in light absorption coefficient at shorter wavelengths (400-500 nm) was observed.

Keyword
Light scattering coefficient, light absorption coefficient, brightness, wood, chromophore
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:miun:diva-7770 (URN)000282459000011 ()2-s2.0-84862667135 (Scopus ID)
Available from: 2008-12-15 Created: 2008-12-15 Last updated: 2013-02-18Bibliographically approved
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