2024

Advances in Science and Technology Research Journal

Journal year: 2024 | Journal volume: vol. 18 | Journal number: iss. 8

scientific article

english

EN The article presents the results of experimental studies on selected, mechanical properties of three-layer film, produced by blown film extrusion. Three-layer film was developed for making garbage bags. The research was carried out under industrial conditions. The three-layer film tubes tested were made of low and high density polyethylene and differed in raw material composition, including a different content of recycled polyethylene in individual film layers. Static tensile strength, tear strength and puncture strength tests were carried out using the falling dart method. On the basis of the results obtained, the impact of the content of polyethylene regranulate on the composition of the raw material of the multilayer film in the above-mentioned selected mechanical properties was assessed, in relation to the expected values of these parameters, ensuring the correct use of the three-layer film in the production process and obtaining a garbage bag with appropriate utility features. A classification system was prepared to develop recipes for dosing waste materials by weight and combining them with the primary LLDPE material, using different proportions of its share in individual layers. Increasing the degree of utilization of waste materials, by increasing their share in the unit product to 55%, allowed maintaining the mechanical parameters of the film, meeting the defined industry expectations in terms of static tensile strength and tear strength and puncture resistance.

385 - 402

10.12913/22998624/195209

http://www.astrj.com/Research-on-the-Influence-of-the-Type-and-Content-of-Regranulate-on-Selected-Mechanical,195209,0,2.html

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