Verdrucken von Nanocellulosefasern in konventionellen direkten Druckverfahren auf Karton und anschließendes Prägen von Kapillarstrukturen mit Hilfe von 3D-gedruckten Prägeformen
The present work is an investigation into the potential of fabricating a cardboardbased POCT with capillaries for transporting fluids using nanocellulose and additive manufactured embossing tools. The nanocellulose was provided by RISE from Sweden. Rheological studies showed that they can be describ...
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| Formato: | Online |
| Idioma: | alemão |
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HTWK Leipzig - OA-Hochschulverlag
2026
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| Acesso em linha: | ONIX_20260415T184306_9783966270632_2 |
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| _version_ | 1869530710172237824 |
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| author | Schmidt, Arne |
| author_browse | Schmidt, Arne |
| author_facet | Schmidt, Arne |
| author_sort | Schmidt, Arne |
| collection | Directory of Open Access Books |
| description | The present work is an investigation into the potential of fabricating a cardboardbased POCT with capillaries for transporting fluids using nanocellulose and additive manufactured embossing tools. The nanocellulose was provided by RISE from Sweden. Rheological studies showed that they can be described using a Bingham model and are subject to a yield point. and are subject to a yield point. The nanocellulose was applied to various types of cardboard using the conventional direct printing processes of flexographic, gravure and screen printing. Flexo and gravure printing proved unsuitable for producing homogeneous layers due to a Saffman-Taylor instability. Various investigations showed that screen printing using a screen with a very high wet ink film thickness produced the best results. The use of open capillaries in POCT requires the lowest possible contact angle. By applying nanocellulose, it was possible to reduce the contact angle of the cardboard to a suitable value and to change the penetration behavior in that the penetration of an applied liquid first takes place in the nanocellulose. Penetration into the cardboard itself was greatly delayed by the nanocellulose. The functionality of open capillaries could not be achieved in this work due to lack of manufacturing accuracy of additive manufacturing and limited cardboard selection. However, functional closed capillaries could be created using film lamination, allowing fluid transport by capillary forces over a distance of 25 mm without penetration into the cardboard. This shows that the production and use of cardboard-based POCT is theoretically possible. |
| format | Online |
| id | doab-20.500.12854ir-175765 |
| institution | Directory of Open Access Books |
| language | ger |
| publishDate | 2026 |
| publishDateRange | 2026 |
| publishDateSort | 2026 |
| publisher | HTWK Leipzig - OA-Hochschulverlag |
| publisherStr | HTWK Leipzig - OA-Hochschulverlag |
| record_format | ojs |
| spelling | doab-20.500.12854ir-1757652026-04-20T08:37:16Z Verdrucken von Nanocellulosefasern in konventionellen direkten Druckverfahren auf Karton und anschließendes Prägen von Kapillarstrukturen mit Hilfe von 3D-gedruckten Prägeformen Schmidt, Arne Nanocellulose Cellulolse Nanofibrils (CNF) Point-of-Care-Tests (POCT) Functional embossing 3D-printed embossing tools Screen printing Paper-based POCT Fibre-based POCT Open capillary RISE HTWK thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDP Other manufacturing technologies::TDPP Printing and reprographic technologies The present work is an investigation into the potential of fabricating a cardboardbased POCT with capillaries for transporting fluids using nanocellulose and additive manufactured embossing tools. The nanocellulose was provided by RISE from Sweden. Rheological studies showed that they can be described using a Bingham model and are subject to a yield point. and are subject to a yield point. The nanocellulose was applied to various types of cardboard using the conventional direct printing processes of flexographic, gravure and screen printing. Flexo and gravure printing proved unsuitable for producing homogeneous layers due to a Saffman-Taylor instability. Various investigations showed that screen printing using a screen with a very high wet ink film thickness produced the best results. The use of open capillaries in POCT requires the lowest possible contact angle. By applying nanocellulose, it was possible to reduce the contact angle of the cardboard to a suitable value and to change the penetration behavior in that the penetration of an applied liquid first takes place in the nanocellulose. Penetration into the cardboard itself was greatly delayed by the nanocellulose. The functionality of open capillaries could not be achieved in this work due to lack of manufacturing accuracy of additive manufacturing and limited cardboard selection. However, functional closed capillaries could be created using film lamination, allowing fluid transport by capillary forces over a distance of 25 mm without penetration into the cardboard. This shows that the production and use of cardboard-based POCT is theoretically possible. 2026-04-20T08:37:15Z 2026-04-20T08:37:15Z 2026-04-16T12:46:03Z 2024 book ONIX_20260415T184306_9783966270632_2 https://library.oapen.org/handle/20.500.12657/112437 9783966270632 9783966270649 https://directory.doabooks.org/handle/20.500.12854/175765 ger open access image/jpeg Attribution 4.0 International https://library.oapen.org/bitstream/20.500.12657/112437/1/9783966270632.pdf HTWK Leipzig - OA-Hochschulverlag 10.33968/9783966270632-00 10.33968/9783966270632-00 00654a11-92ed-4137-aa3b-bdad84cb82d7 9783966270632 9783966270649 120 Leipzig open access |
| spellingShingle | Nanocellulose Cellulolse Nanofibrils (CNF) Point-of-Care-Tests (POCT) Functional embossing 3D-printed embossing tools Screen printing Paper-based POCT Fibre-based POCT Open capillary RISE HTWK thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDP Other manufacturing technologies::TDPP Printing and reprographic technologies Schmidt, Arne Verdrucken von Nanocellulosefasern in konventionellen direkten Druckverfahren auf Karton und anschließendes Prägen von Kapillarstrukturen mit Hilfe von 3D-gedruckten Prägeformen |
| title | Verdrucken von Nanocellulosefasern in konventionellen direkten Druckverfahren auf Karton und anschließendes Prägen von Kapillarstrukturen mit Hilfe von 3D-gedruckten Prägeformen |
| title_full | Verdrucken von Nanocellulosefasern in konventionellen direkten Druckverfahren auf Karton und anschließendes Prägen von Kapillarstrukturen mit Hilfe von 3D-gedruckten Prägeformen |
| title_fullStr | Verdrucken von Nanocellulosefasern in konventionellen direkten Druckverfahren auf Karton und anschließendes Prägen von Kapillarstrukturen mit Hilfe von 3D-gedruckten Prägeformen |
| title_full_unstemmed | Verdrucken von Nanocellulosefasern in konventionellen direkten Druckverfahren auf Karton und anschließendes Prägen von Kapillarstrukturen mit Hilfe von 3D-gedruckten Prägeformen |
| title_short | Verdrucken von Nanocellulosefasern in konventionellen direkten Druckverfahren auf Karton und anschließendes Prägen von Kapillarstrukturen mit Hilfe von 3D-gedruckten Prägeformen |
| title_sort | verdrucken von nanocellulosefasern in konventionellen direkten druckverfahren auf karton und anschliessendes pragen von kapillarstrukturen mit hilfe von 3d gedruckten prageformen |
| topic | Nanocellulose Cellulolse Nanofibrils (CNF) Point-of-Care-Tests (POCT) Functional embossing 3D-printed embossing tools Screen printing Paper-based POCT Fibre-based POCT Open capillary RISE HTWK thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDP Other manufacturing technologies::TDPP Printing and reprographic technologies |
| topic_facet | Nanocellulose Cellulolse Nanofibrils (CNF) Point-of-Care-Tests (POCT) Functional embossing 3D-printed embossing tools Screen printing Paper-based POCT Fibre-based POCT Open capillary RISE HTWK thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDP Other manufacturing technologies::TDPP Printing and reprographic technologies |
| url | ONIX_20260415T184306_9783966270632_2 |
| work_keys_str_mv | AT schmidtarne verdruckenvonnanocellulosefaserninkonventionellendirektendruckverfahrenaufkartonundanschließendespragenvonkapillarstrukturenmithilfevon3dgedrucktenprageformen |