A1 Journal article (refereed), original research

Re-Processing of Multilayer Plastic Materials as a Part of the Recycling Process: The Features of Processed Multilayer Materials

Open Access publication

Publication Details

Authors: Lahtela Ville, Silwal Shekhar, Kärki Timo

Publisher: MDPI

Publication year: 2020

Language: English

Related journal or series: Polymers

Volume number: 12

Issue number: 11

eISSN: 2073-4360

JUFO level of this publication: 1

Digital Object Identifier (DOI): http://dx.doi.org/10.3390/polym12112517

Permanent website address: https://www.mdpi.com/2073-4360/12/11/2517

Open Access: Open Access publication


The weight of packaging materials will be increased with advanced innovations, such as multilayer plastic. The consequence of the advanced innovations is challenges in the following reuse activities. This study aimed to investigate the properties of multilayer plastic materials after recycling processes and will increase the awareness of plastic packaging material for reuse options. In this research, the materials were produced from food packages by crushing them and treating them with injection molding equipment. The implementation of materials in the processing was tested, and the structural and mechanical characteristics of the produced plastic materials was evaluated and discussed. Based on the completed tests, plastic materials used in food packages have the clearest differences in the material features, for instance, the melt flow rate and elongation rate in the tensile test that varied between 2.96–48.4 g/10min and 2–289%, respectively. The variation in the characterizations ranged widely between the material structures. The results indicate that solid plastic packaging materials have better mechanical features compared to foil materials. The structural analysis of materials showed that multilayer plastic includes a wide spectrum of different elements within materials, creating a challenge for future recycling.

LUT Focus Areas

Last updated on 2021-16-03 at 12:47