Výsledky vyhledávání - "Jani Lehmonen"

Akademický článek

Conductive Cellulose based Foam Formed 3D Shapes—From Innovation to Designed Prototype

Autor: Sanna Siljander, Pasi Keinänen, Anastasia Ivanova, Jani Lehmonen, Sampo Tuukkanen, Mikko Kanerva, Tomas Björkqvist

Publikováno v: Materials, Vol 12, Iss 3, p 430 (2019)

In this article, we introduce for the first time, a method to manufacture cellulose based electrically conductive non-woven three-dimensional (3D) structures using the foam forming technology. The manufacturing is carried out using a minimum amount o

Externí odkaz: https://doaj.org/article/7ff079c17b6349e3b1081cb7b6efa7e8

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Akademický článek

ANALYSIS OF RESIN AND FATTY ACIDS ENRICHED IN PAPERMAKING PROCESS WATERS

Autor: Piia Valto, Juha Knuutinen, Raimo Alén, Mikko Rantalankila, Jani Lehmonen, Antti Grönroos, Juha Houni

Publikováno v: BioResources, Vol 5, Iss 1, Pp 172-186 (2010)

The applicability of a special pilot-scale installation (Short Circulation Device) was studied for demonstrating the enrichment of selected resin and fatty acids in process waters when increasing water reuse during the manufacture of paper. The tradi

Externí odkaz: https://doaj.org/article/28845cc25d8f498ea64dd383994edb4f

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Wet creping of paperboard

Autor: Atsushi Tanaka, Jukka A. Ketoja, Jani Lehmonen, Tuomas Turpeinen, Jarmo Kouko, Harri Kiiskinen

Publikováno v: Tanaka, A, Ketoja, J A, Lehmonen, J, Turpeinen, T, Kouko, J & Kiiskinen, H 2023, ' Wet creping of paperboard ', Nordic Pulp and Paper Research Journal, vol. 38, no. 1, pp. 47-57 . https://doi.org/10.1515/npprj-2022-0072

We describe a wet creping approach, applicable not only for softwood kraft papers in the grammage range of 30–120 g/m2 but also for 300 g/m2 CTMP board. Creping of board requires a certain level of deformability in the material, which is controlled

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea056ae6ae8b67f072339909e555e4de
https://cris.vtt.fi/en/publications/c44f5f70-8712-40bd-9491-c1a9854cbcd9

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Foam forming under dynamic conditions

Autor: Karita Kinnunen-Raudaskoski, Jani Lehmonen, Marko Kraft, Elias Retulainen, Jouni Paltakari

Publikováno v: Lehmonen, J, Retulainen, E, Kraft, M, Paltakari, J & Kinnunen-Raudaskoski, K 2020, ' Foam Forming under Dynamic Conditions ', BioResources, vol. 15, no. 3, pp. 6309-6331 . < https://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_15_3_6309_Lehmonen_Foam_Foming_Dynamic_Conditions >

Using foam as a carrier fluid in papermaking gives interesting new opportunities. Foam as a more viscous fluid than water is expected to behave differently in a dynamic process. This study presents results obtained under dynamic forming conditions in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f75ce030c011f43b19be54c85125fdc
https://doi.org/10.15376/biores.15.3.6309-6331

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Upscaling of foam forming technology for pilot scale

Autor: Karita Kinnunen-Raudaskoski, Timo Rantanen, Jani Lehmonen

Publikováno v: Lehmonen, J, Rantanen, T & Kinnunen-Raudaskoski, K 2019, ' Upscaling of foam forming technology for pilot scale ', Tappi Journal, vol. 18, no. 8, pp. 461-471 . https://doi.org/10.32964/TJ18.8.461

The need for production cost savings and changes in the global paper and board industry during recent years have been constants. Changes in the global paper and board industry during past years have increased the need for more cost-efficient processe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11d82de2c28b063ee1338b42c68a9db1
https://cris.vtt.fi/en/publications/9fb70337-6bbf-4aa5-a702-7d3b5a50174f

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Dewatering of foam-laid and water-laid structures and the formed web properties

Autor: Elias Retulainen, Karita Kinnunen-Raudaskoski, Antti Koponen, Jouni Paltakari, Jani Lehmonen

Publikováno v: Lehmonen, J, Retulainen, E, Paltakari, J, Kinnunen-Raudaskoski, K & Koponen, A 2020, ' Dewatering of foam-laid and water-laid structures and the formed web properties ', Cellulose, vol. 27, pp. 1127–1146 . https://doi.org/10.1007/s10570-019-02842-x

Abstract The use of aqueous foams as a carrier fluid for pulp fibers instead of water has re-emerged in the paper and board industry in recent years. In foam forming, a surfactant is needed to reduce the surface tension of the carrier liquid and to c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::616dfa32b0f34000922b7dd35c7be4d7
https://aaltodoc.aalto.fi/handle/123456789/45220

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Effect of cellulose microfibril (CMF) addition on strength properties of middle ply of board

Autor: Jani Lehmonen, Jaakko Pere, Heli Kangas, Eemeli Hytönen

Publikováno v: Lehmonen, J, Pere, J, Hytönen, E & Kangas, H 2017, ' Effect of cellulose microfibril (CMF) addition on strength properties of middle ply of board ', Cellulose, vol. 24, no. 2, pp. 1041-1055 . https://doi.org/10.1007/s10570-016-1146-0

Cellulose microfibrils (CMF) are a promising biobased material with unique nanospecific properties, giving them potential for use in numerous applications. Based on this, cost-effective and novel high-consistency enzymatic fibrillation (HefCel) techn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83bfa52ac82990a79c6ac4e902b3219b
https://cris.vtt.fi/en/publications/b8a7c2ea-134e-409f-8b36-04931d994c61

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Increased dryness after pressing and wet web strength by utilizing foam application technology

Autor: Kristian Salminen, Jani Lehmonen, Karita Kinnunen-Raudaskoski, Tuomo Hjelt

Publikováno v: Kinnunen-Raudaskoski, K, Salminen, K, Lehmonen, J & Hjelt, T 2016, ' Increased dryness after pressing and wet web strength by utilizing foam application technology ', Tappi Journal, vol. 15, no. 11, pp. 731-738 . < http://imisrise.tappi.org/TAPPI/Products/16/NOV/16NOV731.aspx >

Production cost savings by lowering basis weight has been a trend in papermaking. The strategy has been to decrease the amount of softwood kraft pulp and increase use of fillers and recycled fibers. These changes have a tendency to lower strength pro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::157d466b067f0b62cd435ea45bc6a91f
https://doi.org/10.32964/tj15.11.731

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Conductive cellulose based foam formed 3D shapes-from innovation to designed prototype

Autor: Sampo Tuukkanen, Jani Lehmonen, Tomas Björkqvist, Sanna Siljander, Mikko Kanerva, Pasi Keinänen, Anastasia Ivanova

Publikováno v: Siljander, S, Keinänen, P, Ivanova, A, Lehmonen, J, Tuukkanen, S, Kanerva, M & Björkqvist, T 2019, ' Conductive cellulose based foam formed 3D shapes-from innovation to designed prototype ', Materials, vol. 12, no. 3, 430 . https://doi.org/10.3390/ma12030430
Materials, Vol 12, Iss 3, p 430 (2019)
Materials
Volume 12
Issue 3

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e43ea91c1fab75569de405fd7e7b101
https://cris.vtt.fi/en/publications/a57c7db3-ba61-41e7-9058-70cf3f1e6585

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