Comparison of analyzes of the uneven distribution of screen printing ink on environmentally friendly substrates

Polymeric materials or plastics, whose pollution is increasing year by year and spreading throughout the environment, pose a major threat to the balance of the environment and human health. Due to environmental awareness of the harmfulness of polymeric materials, interest in the use of paper is growing. The greatest changes in the raw materials usage are taking place in the packaging sector, where it is extremely important that the materials are environmentally friendly, sustainable, and biodegradable in addition to their function. The basic raw material for paper production is cellulose. Cellulose fibers are traditionally extracted from wood and used to produce a wide range of paper substrates. The aim of this study is to analyze the uneven distribution of screen printing inks on innovative environmentally friendly printing substrates. These printing substrates produced in the laboratory, consist of a mixture of recycled wood pulp and straw pulp from various cereal sources in a 70:30 ratio. All samples studied were screen printed, allowing a comparison of the uneven distribution of screen printing ink according to the ISO 13660 standard and image analysis using ImageJ software.