Delamination of multilayer flexible packaging: a promising approach towards the recycling of their components. A review

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling Pub Date : 2025-07-07 DOI:10.1016/j.resconrec.2025.108493

Antonia Cerbone , Ida Palazzo , Anastasia Ceriello , Rachele Castaldo , Mariamelia Stanzione , Marino Lavorgna , Giovanna Giuliana Buonocore , Gennaro Gentile

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Abstract

Multilayer/multimaterial films, widely used in flexible packaging, provide enhanced functionalities by combining polymeric and non-polymeric layers. However, the recycling of these films is particularly challenging because of their complex structure. Indeed, most waste currently end up in landfills or incinerators. This paper critically explores the rising interest in delamination technologies as a promising technique for recovering individual monomaterial layers, so enabling recycling and resource preservation. This review categorizes and evaluates the latest developments in delamination methods, such as acidic and alkaline treatments, switchable hydrophilic solvents, Diels-Alder chemistry, deep eutectic solvents, innovative adhesive systems, solvent combinations, and mechanical techniques. In conclusion, the potential of specific technologies for industrial scaling is emphasized, identifying present limits and suggesting directions for future research to improve performance, sustainability, and feasibility at larger scales.

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多层软包装的分层：对其组件的回收利用的有前途的方法。回顾

多层/多材料薄膜，广泛应用于软包装，通过结合聚合物和非聚合物层提供增强的功能。然而，由于这些薄膜结构复杂，回收利用尤其具有挑战性。事实上，目前大多数垃圾最终都被填埋或焚化。本文批判性地探讨了对分层技术日益增长的兴趣，作为一种有前途的技术，用于回收单个单材料层，从而实现回收和资源保存。本文对分层方法的最新进展进行了分类和评价，如酸性和碱性处理、可切换的亲水溶剂、Diels-Alder化学、深共晶溶剂、创新的粘合剂系统、溶剂组合和机械技术。最后，强调了特定技术在工业规模化方面的潜力，确定了目前的限制，并提出了未来研究的方向，以提高在更大规模上的性能、可持续性和可行性。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.