Abstract
The material behavior of two different types of paperboard was characterized in tensile tests and in a new test device called paperboard bulge test. A particularly adapted hydroforming process was used to produce three-dimensional paperboard structures. Furthermore, an online measurement device to describe the mold-filling behavior is introduced. The experimental results were compared to the results obtained with an FEA investigation. The investigations showed the possibilities of the new forming process, as well as the advantages of FEA methods used to pre-define the process parameters.
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Notes
The kraft process (also known as sulfate process) is the predominant chemical technology to convert wood into separated cellulose fibers.
Beating is a mechanical treatment of fibers that usually leads to better strength properties by increasing the fibers’ hydrogen bonding ability.
The Schopper-Riegler freeness of a fibrous suspension is a measure for the dehydration capacity of the suspension, which correlates with the results of beating.
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Acknowledgments
The authors would like to thank the German Research Foundation (DFG) for its financial support of the project GR1818/37-1 and SCHA1246/2-1.
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Groche, P., Huttel, D., Post, PP. et al. Experimental and numerical investigation of the hydroforming behavior of paperboard. Prod. Eng. Res. Devel. 6, 229–236 (2012). https://doi.org/10.1007/s11740-012-0365-y
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DOI: https://doi.org/10.1007/s11740-012-0365-y