ADDITION OF ALLANTOIN TO THE WATER DISPERSIVE VARNISH FOR CARDBOARD PACKAGING

Due to its good properties, paper and paper-based materials are significant substrates in the visual communication industry. With the increased concern about plastic materials usage and their influence on the environment, the use of paper and cardboard increases. Cardboard packaging is often used as secondary packaging, and it carries visual information about the product but must have certain mechanical properties to protect the product. As cardboard deteriorates with age, it must be protected to maintain its basic function. This paper aims to investigate the influence of allantoin in addition to the water-dispersive varnish to protect cardboard during accelerated thermal ageing. For the research, the coatings including allantoin were prepared and applied onto cardboard prints. The prepared prints were characterized by their optical and mechanical properties before and after exposure to accelerated thermal ageing. Results of this research showed that the application of coatings including allantoin do not significantly influence cardboard prints, but at the same time do not provide protection in the accelerated thermal ageing. It could be concluded that including allantoin in the water dispersive varnish will not provide higher protection of prints compared to the one without allantoin.