Overview
SIST EN 18120-15:2026 is a comprehensive European standard developed by CEN addressing the recyclability evaluation process for rigid plastic packaging made predominantly of expanded polystyrene (EPS). The standard, as part of the broader EN 18120 series on packaging design for recycling, establishes protocols and requirements for assessing how EPS packaging designs interact with existing recycling processes. EPS packaging categories covered include protective packaging for white goods and fish boxes. Additionally, the standard applies to packaging components constructed from other materials, emphasizing the necessity for their compatibility with polymer recycling systems.
By providing detailed steps for evaluating recycling processes, SIST EN 18120-15:2026 promotes increased circularity, resource efficiency, and sustainable packaging design across European markets.
Key Topics
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Recyclability Assessment Protocols
The document outlines specific procedures and protocols for evaluating the recyclability of EPS packaging. This includes:
- Listing unit operations required for recycling, such as sorting, pre-treatment, grinding, washing, compacting, extrusion, and molding.
- Assessment of packaging constituents (including non-EPS materials) for their impact on recycling.
- Guidance on mandatory testing and sampling at each stage.
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Process Compatibility
SIST EN 18120-15:2026 defines criteria for determining how well EPS packaging fits with current state-of-the-art collection, sorting, and recycling infrastructure. The evaluation grades compatibility as:
- Green: fully compatible with recycling processes
- Yellow: limited compatibility
- Red: not compatible
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Testing and Evaluation Steps
The protocols describe practical steps, such as:
- Control sample selection and comparison
- Pre-treatment (washing, grinding, compacting)
- Extrusion and pelletizing processes
- Performance testing of recycled pellets via molding
- Physical and visual assessment criteria for recycled material
- Performance benchmarking against recognized standards (e.g., EN ISO 527-2 for tensile properties)
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Continuous Improvement
The standard emphasizes regular updates to reflect advances in packaging design, recycling technology, collection, and sorting operations.
Applications
SIST EN 18120-15:2026 is particularly relevant for:
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Packaging Manufacturers
Enables design teams to develop EPS packaging with maximum recyclability, ensuring products remain compatible with European recycling systems and regulatory requirements.
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Recycling Operators
Provides clear protocols for testing and benchmarking new and existing EPS packaging types, facilitating improved material recovery and higher-quality recycled plastics.
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Brand Owners & Retailers
Supports strategic decisions around packaging material selection and supplier requirements, contributing to sustainability goals and compliance with EU packaging regulations.
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Sustainability Consultants
Offers a structured framework for assessing the lifecycle impact of EPS packaging and supporting clients on eco-design and recyclability best practices.
Related Standards
For a holistic approach to design for recycling of plastic packaging, refer to these associated standards:
- EN 18120-1: Definitions and principles for design-for-recycling of plastic packaging
- EN 18120-3: Sortability evaluation process for plastic packaging
- EN 18120-9: Guideline for EPS packaging design
- EN ISO 527 series: Methods for determining the tensile properties of plastics
- EN ISO 1133-1: Melt mass-flow rate test for thermoplastics
- EN ISO 1183-1: Density determination for non-cellular plastics
- EN ISO 3451-1: Measurement of ash content in plastics
- ISO 11358-1: Thermogravimetric analysis for polymers
Following SIST EN 18120-15:2026 ensures the recyclability of EPS packaging meets the growing demand for sustainable packaging solutions, traceable performance, and regulatory alignment across Europe.