*2.1. Material Composition According to Material Group Catalogue*

The sorting of the samples revealed a mixture of various types of material. They were sorted by hand according to a material group catalogue consisting of the following: 3D plastics, films, metals, nets, rubber, foamed plastics and others (e.g., glass and unidentifiable items). After sorting, the fractions were weighed to determine gravimetric composition (Table 3). Subsequently, the type of plastic of the individual materials was determined using a laboratory scale near-infrared spectroscopy (NIR) analyser.


