Potentials of lignocellulosic agricultural residues in paper production

Plazonić, Ivana; Rudolf, Maja; Seleš, Valentina Radić; Bates, Irena; Maretić, Katja Petric

doi:10.33765/thate.11.3.1

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…In recent research [9], the possibility of using mixed pulp from wood and triticale straw up to 30% was shown on a laboratory scale. The use of paper with pulp from agricultural residues (wheat, barley and triticale straw) in the printing industry has been confirmed in several studies [10][11][12][13]. The main advantages of using wood-based papers for commercial packaging include: excellent print quality for most boards, very good mechanical protection for the products, relatively low production and processing costs, and easy recyclability [4].…”

Section: Introductionmentioning

confidence: 99%

Effects of Non-Wood Fibres in Printed Paper Substrate on Barrier and Migration Properties

Kurek

Plazonić

Maretić

et al. 2022

Teh. glas. (Online)

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Nowadays, there is a strong initiative to use recycled or biodegradable materials in all aspects of production including the graphic industry. In this study, paper was used as a material fulfilling the two of mentioned properties. Under laboratory conditions, papers were made of 70% pulp from recycled wood fibres with an addition of 30% straw pulp (wheat, barley or triticale). Considering the importance of the possibility of printing such media based on their end use, the influence of fibre type on vapour barrier properties was studied and overall migration to hydrophilic and fatty food simulants was measured. Analyses were performed on digital, flexographic, and offset prints obtained by printing laboratory papers with UV-curable black ink. It was found that prints produced using the offset technique, in which the ink remains on the surface of the paper, had lower overall levels of migration compared to other printing techniques. The paper produced appears to have the potential to be used as a secondary food packaging material.

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Section: Introductionmentioning

confidence: 99%

Effects of Non-Wood Fibres in Printed Paper Substrate on Barrier and Migration Properties

Kurek

Plazonić

Maretić

et al. 2022

Teh. glas. (Online)

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“…The use of papers with alternative sources of cellulose pulp has been widely explored in the recent past, using non-wood, sustainable and renewable materials derived from different types of plants (El-Sayed, El-Sakhawy & El-Sakhawy, 2020). Cereal straw is particularly interesting for paper production because it has a similar cellulose content to wood, and a lower lignin content (Plazonić et al, 2021). It is, also, a cheap and renewable resource compatible with the high demand for paper as packaging and printing medium.…”

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confidence: 99%

Evaluation of the line and edge quality of printed letters on recycled paper with straw pulp

Rudolf¹,

Bates²,

Plazonić³

et al. 2022

Proceedings - The Eleventh International Symposium GRID 2022

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Traditional papermaking is based on the use of an aqueous suspension consisting of cellulose fibres obtained by processing wood, non-wood plants or waste paper. With growing environmental concerns regarding deforestation and CO2 production, the paper industry has been always looking for new sources of non-wood pulp that would produce papers of similar quality to those made from wood pulp. Cereal straw from wheat, barley or triticale crops that remains on fields as a residue after grain harvesting has proven to be a good substitute for virgin wood fibres needed in the production of recycled paper. In this study, the quality of printed text on recycled paper with added straw pulp is evaluated mainly based on the line and edge characteristics of the printed letters. For this purpose, three types of laboratory paper substrates were first prepared using recycled wood pulp with the addition of 30% wheat, barley, or triticale straw pulp. The same letter pattern was printed with black ink on each paper substrate at a standard size of 12 pt with two common typefaces: Arial and Times New Roman. The quality of the printed letters was assessed through the measured print quality parameters such as blurriness, raggedness, fill and contrast. The resulting measurements were compared with the results obtained on the reference and control samples made exclusively from recycled wood pulp as a substrate from laboratory and commercial production. In terms of fill and contrast values, the uniformity of lines printed on the recycled papers with added straw pulp is the same or very similar to the reference and control papers. Letters printed in Arial (sans-serif) typeface show slightly better reproduction quality than letters printed in Times New Roman (serif) typeface. The measured parameters blurriness and raggedness of all laboratory-made paper substrates (with and without straw pulp) had similar values between 0.17 mm and 0.20 mm, resulting in a very similar reproduction quality compared to the reference paper substrate.

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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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Potentials of lignocellulosic agricultural residues in paper production

Cited by 4 publications

References 7 publications

Effects of Non-Wood Fibres in Printed Paper Substrate on Barrier and Migration Properties

Effects of Non-Wood Fibres in Printed Paper Substrate on Barrier and Migration Properties

Evaluation of the line and edge quality of printed letters on recycled paper with straw pulp

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

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