Flexo printability of agro and invasive papers

Karlovits, Igor; Kavčič, Urška

doi:10.1007/s10570-022-04571-0

Cited by 6 publications

(3 citation statements)

References 29 publications

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“…Prints made with magenta and cyan inks were found to have higher values for graininess (the magenta prints were between 0.14 and 0.20 and the cyan prints were between 0.12 and 0.18) and for mottling (the magenta prints were between 0.12 and 0.13 and the cyan prints were between 0.11 and 0.17) compared to prints made with other inks (whose values for graininess of yellow prints ranged from 0.05 to 0.08 and for black prints from 0.06 to 0.09, while mottling values for yellow prints ranged from 0.06 to 0.09 and for black prints from 0.06 to 0.09). As stated in the research by Karlovits et al [39], different surface free energies and different values of ink penetration depth do not directly affect the uneven ink coverage on the substrate when printing is conducted with low-viscosity ink. Both analyzed values of uneven ink coverage on the printing substrate presented in Figure 9a,b were increased by up to 0.20 for gravure prints compared to offset prints (by up to 0.11) indicating that a greater depth of ink penetration into the printing substrate results in greater uneven surface coverage with ink.…”

Section: Discussionmentioning

confidence: 88%

Usability of Discarded Lignocellulosic Fibers in Paper for Secondary Green Packaging and Labeling

et al. 2023

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Packaging and labels are used for a variety of products and have become an indispensable part of daily life, while products without labels or packaging cause uncertainty among consumers. The global trend is to reduce the amount of packaging waste by recycling and reusing the same material or using other available waste raw materials. With large quantities of stalks remaining discarded in the fields after harvest each year, cereal straw is emerging as an alternative source of lignocellulosic fibers for secondary green packaging and labels. In this study, the usability of printed papers with discarded lignocellulosic fibers by offset and gravure printing processes for secondary green packaging and labels was observed based on the qualitative parameters of reproduction and ink penetration into the printing substrate. From the obtained results, it can be concluded that gravure prints have greater penetration of the ink into the printing substrate, resulting in more uneven surface coverage with printing ink, compared to offset prints, where the viscosity of the ink and the printing process itself have the greatest influence. Therefore, these substrates with discarded lignocellulosic fibers can be used for secondary green packaging and labeling printed by the offset printing process, while gravure printing requires an additional coating or a larger amount of filler in the paper structure.

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Section: Discussionmentioning

confidence: 88%

Usability of Discarded Lignocellulosic Fibers in Paper for Secondary Green Packaging and Labeling

et al. 2023

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“…Invasive waste can also be used to produce bioenergy, namely bioethanol, biogas, or wood fuel (e.g., [133][134][135][136][137][138][139][140][141][142][143][144][145][146][147][148]), biochar or charcoal for different purposes (e.g., [149][150][151][152][153]), or animal feed (e.g., [154][155][156][157]. Some authors also suggest the use of IAPs for effluent treatments (e.g., [158][159][160][161][162][163][164][165]), paper and packaging materials (e.g., [166][167][168][169][170]), building materials [171], natural fiber composites [172], and bio-adsorbents for textile dyes or others [173][174][175][176][177][178][179]…”

Section: Potential Applications Of Iap Waste From Management Actionsmentioning

confidence: 99%

Strategies for the Management of Aggressive Invasive Plant Species

Lorenzo

Morais

2023

Plants

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Current control methods for invasive alien plants (IAPs) have acceptable short-term outcomes but have proven to be unfeasible or unaffordable in the long-term or for large invaded areas. For these reasons, there is an urgent need to develop sustainable approaches to control or restrict the spread of aggressive IAPs. The use of waste derived from IAP control actions could contribute to motivating the long-term management and preservation of local biodiversity while promoting some economic returns for stakeholders. However, this strategy may raise some concerns that should be carefully addressed before its implementation. In this article, we summarize the most common methods to control IAPs, explaining their viability and limitations. We also compile the potential applications of IAP residues and discuss the risks and opportunities associated with this strategy.

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“…Its quick replenishment and spreading can be made useful if appropriate utilization can be organized, and recently alternative papers made from invasive plants have been found to be good materials for packaging [9,10] as well as for printing [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Alternative Fiber-Based Paperboard Adhesion Evaluation with T- and Y-Peel Testing

Kavčič,

Lavrič,

Karlovits

2023

Applied Sciences

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Due to increased pressure on the availability of wood biomass in the EU and the regulatory attempts to lower CO2 values, where wood-based biomass plays a crucial role in carbon sequestration, the use of cellulose derived from alternative sources is gaining increased interest in the pulp and paper industry as well as in other industries. The processing properties of alternative fiber-based packaging need to be checked in current processing operations with other types of materials and recycling workflows. For example, in the production of folding boxes, after printing other converting properties such as glueability are also of great importance. The adhesive absorption and bonding strength of materials are important as adhesive joints of packaging can interfere with the protective function. In the presented research, three different paperboards produced on a pilot scale from alternative raw material sources were tested. Two paperboards were produced from the alien invasive plants Japanese knotweed and black locust, and one from residual sawdust. The basic paperboard properties were tested regarding paperboard porosity, roughness, z-directional tensile strength, and dynamical behavior regarding liquid interaction (contact angle and liquid penetration dynamic), as water-based adhesives were used in the research. For adhesive joint strength testing, Y- and T-peel adhesion testing was performed on the joint paperboard samples, as still there is no fully standardized method for the evaluation of such fiber-based material properties. The results indicate differences in the penetration dynamics of liquids. This parameter had the highest influence on the peel adhesion strength, while porosity, roughness, and dynamic contact angle were not so significant. Regarding the two adhesive joint tests, the differences in separate materials regarding peel adhesion curves show similar results. However, the Y-peel maximum force values are higher due to the testing setup (in comparison to the T-peel test). The paperboards made from invasive plants showed adhesive joint failures which are more suitable for tamper-proof packaging due to their low surface strength and crack propagation into the fiber structure.

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Flexo printability of agro and invasive papers

Cited by 6 publications

References 29 publications

Usability of Discarded Lignocellulosic Fibers in Paper for Secondary Green Packaging and Labeling

Usability of Discarded Lignocellulosic Fibers in Paper for Secondary Green Packaging and Labeling

Strategies for the Management of Aggressive Invasive Plant Species

Alternative Fiber-Based Paperboard Adhesion Evaluation with T- and Y-Peel Testing

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