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DOE OSTI · 3580364

All-Polyester Multilayer Plastics (‘All-Polyester MLPs’): A Redesign for Inherently Recyclable Plastics

Rabnawaz, muhammad [Michigan State University] (ORCID:0000000245761810)
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Abstract

Multilayer plastics (MLPs) are widely used in modern packaging because they combine multiple functions such as oxygen and moisture barriers, mechanical strength, puncture resistance, and heat sealability into lightweight and cost-effective packaging solutions. These attributes are essential for food, beverage, pharmaceutical, and consumer goods packaging. However, conventional commercial MLPs typically consist of five to twelve layers made from chemically incompatible materials, including polyolefins, polyethylene terephthalate, nylon, ethylene-vinyl alcohol (EVOH), adhesives, and tie layers. This complexity makes MLPs extremely difficult to recycle. As a result, the vast majority of multilayer plastics (MLPs) are disposed of through landfilling or incineration. This disposal pathway perpetuates demand for virgin material production, thereby driving high industrial energy consumption, increasing greenhouse gas (GHG) emissions, and contributing to the long-term accumulation of plastic waste. The scope of work included: (1) Design and fabrication of all-polyester multilayer structures using commercially relevant processing methods; (2) Experimental validation of barrier, mechanical, and sealing performance; (3) Demonstration of both mechanical and chemical recycling pathways; and (4) Comprehensive techno-economic analysis (TEA) and life-cycle assessment (LCA) to quantify cost, energy, and environmental impacts.

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36 MATERIALS SCIENCEall-polyester multilayer plasticschemical recyclingdflexible packagingmechanical recyclingmultilayer packagingPETpolyesterpolymer recyclingrecyclable packagingsustainable packaging

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Rabnawaz, muhammad [Michigan State University] (ORCID:0000000245761810). 2026-08-31. All-Polyester Multilayer Plastics (‘All-Polyester MLPs’): A Redesign for Inherently Recyclable Plastics. https://doi.org/10.2172/3580364

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36 MATERIALS SCIENCE subjectPET subjectall-polyester multilayer plastics subjectchemical recycling subjectflexible packaging subjectmechanical recycling subjectmultilayer packaging subjectpolyester subjectpolymer recycling subject

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