We come across plastic packaging every day, the closest we get are the plastic bags found in all stores. The component of these bags is polyethylene. The thesis deals with polyethylene foil made from recycled low density polyethylene (LDPE). The study included foils made from recycled and primary LDPE and granulate from recycled LDPE. The introductory part presents statistics on the amount of packaging waste in Slovenia and the European Union, the following part presents polyethylene packaging, describes the properties, production and use of LDPE. The theoretical part also covers the recycling of packaging, the recycling process for polyethylene packaging is described in more detail. In the experimental work, using the various methods of investigation, the performed granulate and foil analyzes were made, from recycled and primary LDPE. Based on the results of the melting point and FTIR spectroscopy measurements, it was found that the recycled film contains only LDPE and no other polymer types. The analysis of the technological properties shows that the films made of primary and recycled polymer differ in mass and thickness, inclusions, impurities are visible in the recycled film, as well as the results of measurements of the film roughness. The mechanical properties of the foil were determined in both directions, longitudinal and transverse. The results of measurements of tensile properties and tearing strength showed that the films differ slightly in mechanical properties and that the primary LDPE film generally has better mechanical properties.
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