Press-forming Molded Pulp from Repulped Liquid Packaging Board: Role of Heat Input, Pressing Force, and Defect Formation
Laboratory sheets were prepared from repulped liquid packaging board (LPB) for press-forming experiments and tensile tests to study convertibility and mechanical properties of molded pulp material developed from the repulped LPB. Maximum forming depth was utilized as a convertibility indicator, and...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
North Carolina State University
2022-11-01
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| Series: | BioResources |
| Subjects: | |
| Online Access: | https://ojs.cnr.ncsu.edu/index.php/BRJ/article/view/22073 |
| _version_ | 1797794866622627840 |
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| author | Arvo Niini Panu Tanninen Ville Leminen Ilari Jönkkäri Mika Horttanainen |
| author_facet | Arvo Niini Panu Tanninen Ville Leminen Ilari Jönkkäri Mika Horttanainen |
| author_sort | Arvo Niini |
| collection | DOAJ |
| description | Laboratory sheets were prepared from repulped liquid packaging board (LPB) for press-forming experiments and tensile tests to study convertibility and mechanical properties of molded pulp material developed from the repulped LPB. Maximum forming depth was utilized as a convertibility indicator, and defect formation in press-formed molded pulp samples was observed with a visual analysis. Female mold temperature and pressing force were altered among press-forming parameters. The results showed that the laboratory sheets had a limited convertibility. The fragile structure of the laboratory sheets was connected to negative effects from the presence of plastic particles in the material. Increased heat input and decreased pressing force improved the convertibility, and the defect formation during the press-forming was aggravated by flattening of the material in flange and bottom regions of the samples. The use of repulped LPB as the raw material in the manufacturing of molded pulp by press-forming was found viable, and the presented solution offers an ecological alternative to conventional recycling of LPB. |
| first_indexed | 2024-03-13T03:09:11Z |
| format | Article |
| id | doaj.art-c07e1928db0742639b14b5f263c66967 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-03-13T03:09:11Z |
| publishDate | 2022-11-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-c07e1928db0742639b14b5f263c669672023-06-26T18:26:00ZengNorth Carolina State UniversityBioResources1930-21262022-11-011746148615775Press-forming Molded Pulp from Repulped Liquid Packaging Board: Role of Heat Input, Pressing Force, and Defect FormationArvo Niini0Panu Tanninen1Ville Leminen2Ilari Jönkkäri3Mika Horttanainen4Lappeenranta-Lahti University of TechnologyLappeenranta-Lahti University of TechnologyLappeenranta-Lahti University of TechnologyTampere UniversityLappeenranta-Lahti University of TechnologyLaboratory sheets were prepared from repulped liquid packaging board (LPB) for press-forming experiments and tensile tests to study convertibility and mechanical properties of molded pulp material developed from the repulped LPB. Maximum forming depth was utilized as a convertibility indicator, and defect formation in press-formed molded pulp samples was observed with a visual analysis. Female mold temperature and pressing force were altered among press-forming parameters. The results showed that the laboratory sheets had a limited convertibility. The fragile structure of the laboratory sheets was connected to negative effects from the presence of plastic particles in the material. Increased heat input and decreased pressing force improved the convertibility, and the defect formation during the press-forming was aggravated by flattening of the material in flange and bottom regions of the samples. The use of repulped LPB as the raw material in the manufacturing of molded pulp by press-forming was found viable, and the presented solution offers an ecological alternative to conventional recycling of LPB.https://ojs.cnr.ncsu.edu/index.php/BRJ/article/view/22073convertibilityforming depthlaboratory sheetupcyclingmechanical recycling |
| spellingShingle | Arvo Niini Panu Tanninen Ville Leminen Ilari Jönkkäri Mika Horttanainen Press-forming Molded Pulp from Repulped Liquid Packaging Board: Role of Heat Input, Pressing Force, and Defect Formation BioResources convertibility forming depth laboratory sheet upcycling mechanical recycling |
| title | Press-forming Molded Pulp from Repulped Liquid Packaging Board: Role of Heat Input, Pressing Force, and Defect Formation |
| title_full | Press-forming Molded Pulp from Repulped Liquid Packaging Board: Role of Heat Input, Pressing Force, and Defect Formation |
| title_fullStr | Press-forming Molded Pulp from Repulped Liquid Packaging Board: Role of Heat Input, Pressing Force, and Defect Formation |
| title_full_unstemmed | Press-forming Molded Pulp from Repulped Liquid Packaging Board: Role of Heat Input, Pressing Force, and Defect Formation |
| title_short | Press-forming Molded Pulp from Repulped Liquid Packaging Board: Role of Heat Input, Pressing Force, and Defect Formation |
| title_sort | press forming molded pulp from repulped liquid packaging board role of heat input pressing force and defect formation |
| topic | convertibility forming depth laboratory sheet upcycling mechanical recycling |
| url | https://ojs.cnr.ncsu.edu/index.php/BRJ/article/view/22073 |
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