miun.sePublikasjoner
Endre søk
Link to record
Permanent link

Direct link
BETA
Höglund, Hans
Alternativa namn
Publikasjoner (10 av 72) Visa alla publikasjoner
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.
Åpne denne publikasjonen i ny fane eller vindu >>A paper or paperboard product comprising at least one ply containing high yield pulp and its production method
2018 (engelsk)Patent (Annet (populærvitenskap, debatt, mm))
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-33506 (URN)
Patent
SE 540115 C2
Merknad

International application WO 2018054957 A1.

Tilgjengelig fra: 2018-04-17 Laget: 2018-04-17 Sist oppdatert: 2018-04-17bibliografisk kontrollert
Samuelsson, T., Pettersson, G., Norgren, S., Svedberg, A., Höglund, H. & Engstrand, P. (2018). Development of strong and water resistant packaging materials from high yield pulps – fundamental aspects. In: IMPC 2018: . Paper presented at International Mechanical Pulping Conference (IMPC) 2018, May 27-30, 2018, Trondheim, Norway. Trondheim, Norway
Åpne denne publikasjonen i ny fane eller vindu >>Development of strong and water resistant packaging materials from high yield pulps – fundamental aspects
Vise andre…
2018 (engelsk)Inngår i: IMPC 2018, Trondheim, Norway, 2018Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

This work is focused on fundamental aspects of the densification of paper sheets during hot-pressing under conditions where the lignin in the fibre walls is softened. In this study light microscope and scanning electron microscope (SEM) techniques were used to reveal the mechanisms in the fibre network structure within the paper sheets that arises due to densification and the impact of lignin. UV and staining methods and spectrometric observations of the ultrastructure of cross section of paper sheets and fibre surfaces will highlight the changes that occur in the fibre structures. This study improves the understanding of how fibres collapse and how internal fibre-fibre bonds in lignin-rich mechanical pulp affect the physical properties of the final paper sheet. To demonstrate this, paper sheets from five different pulps containing different concentration of natural lignin were produced. Handsheets of 150 g/m2 were prepared in a Rapid Köthen (RK) laboratory sheet former, where the sheets were press-dried at 100 kPa and ca 90oC to a dry content of 45-50% d.c. After 24 hours in room temperature the hand sheets were hot-pressed in a temperature interval from 20 – 200oC at a constant pressure in a cylinder-press at a speed of 1 m/min. The results show that remarkable improvements on paper sheets, based lignin-rich pulps, can be achieved in terms of increased tensile index (up to 85 kNm/kg), compression strength, SCT, (up to 38 kNm/kg) and wet strength (up to 10 kNm/kg), which depends on the densification of the fibre structure at high temperature and pressure in the load nip. It is concluded that this to a major extent is related to that the lignin rich fibres are compressed at high enough temperature to both softened and develop tacky surfaces so that the fibres are locked into their positions within the highly densified sheets. The SEM evaluation shows how the surface structure get dense at pressing at 200oC for the CTMP based paper sheets. The light microscopy studies of the sheet cross sections reveal how the fibres collapse in the case of CTMP based sheets while fibres from bleached kraft pulp based sheets are quite well collapsed already at room temperature.

sted, utgiver, år, opplag, sider
Trondheim, Norway: , 2018
Emneord
ctmp, densification, hand sheets, hyp, lignin, mechanical pulp, nssc, strength properties, tmp, wet strength
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-34675 (URN)
Konferanse
International Mechanical Pulping Conference (IMPC) 2018, May 27-30, 2018, Trondheim, Norway
Tilgjengelig fra: 2018-10-09 Laget: 2018-10-09 Sist oppdatert: 2018-12-03bibliografisk kontrollert
Norgren, S., Pettersson, G. & Höglund, H. (2018). Strong paper from spruce CTMP - Part II: Effect of pressing at nip press temperatures above the lignin softening temperature. Nordic Pulp & Paper Research Journal, 33(1), 142-149
Åpne denne publikasjonen i ny fane eller vindu >>Strong paper from spruce CTMP - Part II: Effect of pressing at nip press temperatures above the lignin softening temperature
2018 (engelsk)Inngår i: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 33, nr 1, s. 142-149Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The main objective of the current study was to demonstrate that it is possible to enhance strength properties of sheets from spruce HT-CTMP and CTMP furnishes up to the same level as is common on sheets from softwood kraft pulps by changing conditions in papermaking. To achieve that, sheets of spruce HT-CTMP and CTMP were consolidated at densities close to that of the reference bleach kraft pulp by pressing at press nip temperatures well above the tack and softening temperatures of lignin. On sheets from spruce CTMP (CSF 420 ml), where the fibers were surface treated with cationic starch, it was possible to reach tensile index at the same level as on sheets from the untreated reference kraft pulp. The compression strength (SCT) of CTMP and HT-CTMP sheets, which were achieved at the highest press nip temperature (200 °C) in the study, was equal to or higher than that of the reference kraft pulp sheets. The results show that there is a great yet unexploited potential in papermaking from spruce HT-CTMP and CTMP furnishes, which could be utilized in manufacturing of products where very high requirements upon strength is demanded. 

Emneord
adsorption, CMC, CTMP, heat, polyelectrolytes, pressure, starch, tensile index
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-34544 (URN)10.1515/npprj-2018-3009 (DOI)000450919200016 ()2-s2.0-85048028992 (Scopus ID)
Tilgjengelig fra: 2018-09-27 Laget: 2018-09-27 Sist oppdatert: 2019-08-06bibliografisk kontrollert
Pettersson, G., Höglund, H., Norgren, S., Engstrand, P., Peng, F., Granfeldt, T., . . . Joelsson, T. (2018). Upgrading the strength properties of sheets from hardwood high yield pulps. In: Pan Pacific Fibre Value Chain Conference 2018, Proceedings: . Paper presented at 2018 Pan Pacific Fibre Value Chain Conference and Expo, New Zealand, 4 December 2018 through 7 December 2018 (pp. 142-147). Appita Inc.
Åpne denne publikasjonen i ny fane eller vindu >>Upgrading the strength properties of sheets from hardwood high yield pulps
Vise andre…
2018 (engelsk)Inngår i: Pan Pacific Fibre Value Chain Conference 2018, Proceedings, Appita Inc. , 2018, s. 142-147Konferansepaper, Publicerat paper (Fagfellevurdert)
sted, utgiver, år, opplag, sider
Appita Inc., 2018
Emneord
CMC, CTMP, Polyelectrolytes, Pressure heat, Starch, Tensile index, Dyes, Fibers, Hardwoods, Manufacture, Pulp refining, Surface treatment, Cationic starches, Compression index, Compression strength, Number of contacts, Softening temperature, Strength property, Pulp
Identifikatorer
urn:nbn:se:miun:diva-36664 (URN)2-s2.0-85064969968 (Scopus ID)9780975746998 (ISBN)
Konferanse
2018 Pan Pacific Fibre Value Chain Conference and Expo, New Zealand, 4 December 2018 through 7 December 2018
Tilgjengelig fra: 2019-07-09 Laget: 2019-07-09 Sist oppdatert: 2019-07-09bibliografisk kontrollert
Pettersson, G., Norgren, S. & Höglund, H. (2017). Strong paper from spruce CTMP - Part I. Nordic Pulp & Paper Research Journal, 32(1), 54-58
Åpne denne publikasjonen i ny fane eller vindu >>Strong paper from spruce CTMP - Part I
2017 (engelsk)Inngår i: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 32, nr 1, s. 54-58Artikkel i tidsskrift (Fagfellevurdert) 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.

Emneord
Adsorption, CMC, CTMP, Heat, Polyelectrolytes, Pressure, Starch, Tensile index
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-30664 (URN)10.3183/NPPRJ-2017-32-01-p054-058 (DOI)000398384400007 ()2-s2.0-85016441688 (Scopus ID)
Tilgjengelig fra: 2017-04-26 Laget: 2017-04-26 Sist oppdatert: 2017-06-09bibliografisk kontrollert
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
Åpne denne publikasjonen i ny fane eller vindu >>Low energy CTMP in strong and bulky paperboard plies
2016 (engelsk)Inngår i: Paper Conference and Trade Show, PaperCon 2016, TAPPI Press, 2016, Vol. 1, s. 556-564Konferansepaper, Publicerat paper (Fagfellevurdert)
sted, utgiver, år, opplag, sider
TAPPI Press, 2016
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-30112 (URN)2-s2.0-85010465464 (Scopus ID)9781510831193 (ISBN)
Konferanse
Paper Conference and Trade Show, PaperCon 2016, 15 May 2016 through 18 May 2016, Cincinnati; United States
Tilgjengelig fra: 2017-02-14 Laget: 2017-02-14 Sist oppdatert: 2017-02-14bibliografisk kontrollert
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
Åpne denne publikasjonen i ny fane eller vindu >>Strong paper from spruce CTMP
2016 (engelsk)Inngår i: International Mechanical Pulping Conference 2016, IMPC 2016, TAPPI Press, 2016, s. 229-233Konferansepaper, Publicerat paper (Fagfellevurdert)
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.

sted, utgiver, år, opplag, sider
TAPPI Press, 2016
Emneord
CMC, CTMP, Heat, Polyelectrolytes, Pressure, Starch, Tensile index Adsorption
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-29836 (URN)2-s2.0-85006415447 (Scopus ID)9781510830738 (ISBN)
Konferanse
International Mechanical Pulping Conference 2016, IMPC 2016; Jacksonville; United States; 26 September 2016 through 28 September 2016
Tilgjengelig fra: 2017-01-09 Laget: 2017-01-09 Sist oppdatert: 2017-04-26bibliografisk kontrollert
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
Åpne denne publikasjonen i ny fane eller vindu >>Strong and bulky paperboard sheets from surface modified CTMP, manufactured at low energy
Vise andre…
2015 (engelsk)Inngår i: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 30, nr 2, s. 318-324Artikkel i tidsskrift (Fagfellevurdert) 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.

Emneord
CTMP, Starch, CMC, Multilayer, Paperboard, Strength properties
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-25692 (URN)000354806700018 ()2-s2.0-84945899503 (Scopus ID)
Tilgjengelig fra: 2015-08-21 Laget: 2015-08-18 Sist oppdatert: 2017-08-10bibliografisk kontrollert
Norgren, S. & Hoglund, H. (2014). Consolidation of fibre-fibre bonds in TMP and CTMP based papers. Paper Technology, 55(3), 6-10
Åpne denne publikasjonen i ny fane eller vindu >>Consolidation of fibre-fibre bonds in TMP and CTMP based papers
2014 (engelsk)Inngår i: Paper Technology, ISSN 0958-6024, Vol. 55, nr 3, s. 6-10Artikkel i tidsskrift (Annet vitenskapelig) 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%.

HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-22632 (URN)2-s2.0-84904868180 (Scopus ID)
Merknad

CODEN: PATEE

Tilgjengelig fra: 2014-09-22 Laget: 2014-08-20 Sist oppdatert: 2014-09-22bibliografisk kontrollert
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.
Åpne denne publikasjonen i ny fane eller vindu >>High strength papers from high yield pulps
2014 (engelsk)Inngår i: International Mechanical Pulping Conference, IMPC 2014, 2014Konferansepaper, Publicerat paper (Fagfellevurdert)
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.

Serie
International Mechanical Pulping Conference, IMPC 2014
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-24067 (URN)2-s2.0-84923974435 (Scopus ID)9780000000002 (ISBN)
Konferanse
International Mechanical Pulping Conference, IMPC 2014; Helsinki; Finland; 2 June 2014 through 5 June 2014; Code 109275
Merknad

Export Date: 7 January 2015

Tilgjengelig fra: 2015-01-08 Laget: 2015-01-07 Sist oppdatert: 2015-08-12bibliografisk kontrollert
Organisasjoner