This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Faculty of Technology, University of Banja Luka , Banja Luka , Bosnia and Herzegovina
Faculty of Technology, University of Banja Luka , Banja Luka , Bosnia and Herzegovina
Faculty of Technology, University of Banja Luka , Banja Luka , Bosnia and Herzegovina
Faculty of Technology, University of Banja Luka , Banja Luka , Bosnia and Herzegovina
The production of polyethylene blown films, which are used for the production of packaging, such as different types of bags and pouches, is a very complex process. With this procedure, the molten plastic mass is extruded through a ring tool and forms a thick-walled cylinder. The still heated and softened cylinder expands by blowing air into a hollow cylinder of a certain diameter and wall thickness. The quality of the film is affected by adjusting and matching the height of the cooling line, the blowing ratio, the working speed and the capacity of the extruder. The quality of the film can also be affected by add of additives in the extrusion process. In this way, the material gets the desired color, firmness, elasticity, static electricity is eliminated, and it is possible to influence other properties as well. Commercially available PELD, PEHD, recycled PE material that was not used for original purposes (Post Industrial Recycled Materials) and additives were used for the production of films. By mixing fresh polyethylene, additives and recycled polyethylene in different ratios, products with different mechanical characteristics are obtained.
The statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.
