FTIR microscope to determine the recyclability of multilayer films.
- Reliable recyclability assessment using FTIR microscope
- Detection of the individual material layers in composite films
- Ambiguous information in manufacturer specifications about material composition can be avoided
- Results on recyclability without specifications, instead with confirmed laboratory method
- Complements existing DSC analysis and strengthens the validity of the existing laboratory method
Multi-layer films are now standard in supermarkets. While these impress with their light weight and their functional barrier layers, the recyclability has to be looked at closely: Which material combinations, barriers and adhesions are used and how do they affect recycling? Trade and also European legislation are increasingly demanding proof of the recyclable share in accordance with the European DIN EN 13430. However, the claim in accordance with DIN is only possible if the exact ratio of target material and other materials can be determined. Information that brand owners and distributors in particular often lack. With the new FTIR microscope, Interseroh+ is able to examine the cross-section of a film as part of the scientific laboratory analysis in the competence center for plastics recycling and thus determine the recyclable share of a packaging material according to DIN EN 13430. In addition to the DSC analysis carried out, material layers of <5% can be detected even more precisely, which do not always find their way into a specification. The assessments of recyclability by Interseroh+ can be carried out even more truthfully with this addition. As the only research institution in the EU that specializes in the development and analysis of recycled plastics, the competence center has had international accreditation in accordance with the EN/ISO 17025 laboratory standard since March 2020.