PAPERmaking! FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 6, Number 2, 2019
distribution in damp environment. Moisture-proof coating mechanism of the corrugated board and related moisture-proof coating experimental study were discussed and carried out in this paper. Four-layer corrugated board (250 g/170 g/100 g/250 g, double C) and five-layer corrugated board (200 g/120 g/120 g/120 g/200 g, BA) were selected as experimental materials. The physical and mechanical properties of these two kinds of corrugated boards coated by damp-resistant material under different environment conditions were tested and analyzed. The optimum coating amount was determined under the conditions of temperature and humidity selected in the experiments. The results show that the combination performance of the corrugated boards and corrugated board box reached the best when the damp-resistant material consumption is 6 g/m2 under RH65%. Evaluation of measures to mitigate mineral oil migration from recycled paper in food packaging, Harrie Buist, Toon van Harmelen, Claudia van den Berg, Winfried Leeman, Marie Meima & Lisette Krul, Packaging Technology and Science , 33(12), Dec. 2020, https://doi.org/10.1002/pts.2534. The presence of mineral oil saturated hydrocarbons (MOSH) and aromatic hydrocarbons (MOAH) in food is a safety concern. Migration to food from recycled paper and board is a relevant source of MOSH and MOAH, and the potential of several technologies to reduce it was explored. These technologies were assessed for food safety (people), environment (planet) and economy (profit) in an integrated way, using a framework developed to compare the effect of the technologies with the current state of the art. Two mature technologies were evaluated (MB12 and flotation), two in development (supercritical CO2 and thermal treatment), and two as a concept (anionic trash catchers and functionalized clays). The use of mineral Ǧ oil Ǧ free inks for printing newspapers was also evaluated. It was concluded that, although it is desirable to apply mineral Ǧ oil Ǧ free inks, in the short Ǧ term reduction technologies have more impact. All technologies of which the effectiveness could be investigated (MB12, flotation, supercritical CO2 and thermal treatment) are able to reduce the potential migration of mineral oils by >70%, but none score optimally on all indicators. The MB12 technology shows the best overall performance and is ready for implementation, provided its patent will be available to more parties. Supercritical CO2 performs best on food safety, but environmental and economic performance has to be improved. The developed assessment framework yields a clear overview of the advantages and disadvantages of the technologies. Based on the assessment, recommendations are made to stakeholders, including the recycling industry, the ink and printing industry, the food industry and research institutes. The effect of pallet top deck stiffness on the compression strength of asymmetrically supported corrugated boxes, Chandler Quesenberry, Laszlo Horvath, John Bouldin & Marshall S. White, Packaging Technology and Science , 33(12), Dec. 2020, https://doi.org/10.1002/pts.2533 . During unitized shipment, the components of unit loads are interacting with each other. During floor stacking of unit loads, the load on the top of the pallet causes the top deck of the pallet to bend, which creates an uneven top deck surface resulting in uneven or asymmetrical support of the corrugated boxes. This asymmetrical support could significantly affect the strength of the corrugated boxes, and it depends on the top deck stiffness of the pallet. This study is aimed at investigating how the variations of pallet top deck stiffness and the resulting asymmetric support affect corrugated box compression strength. The study used a scaled Ǧ down unit load compression test on quarter Ǧ scale pallet designs with different deckboard thicknesses using four different corrugated box designs. Pallet top deck stiffness was determined to have a significant effect on box compression strength. There was a 27% – 37% increase in box compression strength for boxes supported by high Ǧ stiffness pallets in
Technical Abstracts
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