Chilean Pact for Plastics Reclassifies Polystyrene Yogurt Cups as Recyclable
Chile is seeing a significant shift in the circular economy for High Impact Polystyrene (HIPS), commonly known as PS number 6, which is widely used for yogurt and dessert containers. Until recently, approximately 13,000 tons of these containers generated annually in Chile were not effectively collected post-consumption, largely due to a lack of demand for their valorization. This meant most ended up as waste. However, changes initiated in 2020, when HIPS was flagged for review by the Chilean Pact for Plastics, are now manifesting in 2026. Projections suggest that collecting just 10% of the HIPS placed on the market by 2028 could be absorbed by existing demand, with increased volumes potentially opening new, economically viable markets. Utilizing recycled HIPS also offers environmental benefits by replacing virgin materials and boasts a lower carbon footprint compared to alternatives. Consequently, HIPS has been removed from the problematic and unnecessary plastics list in the Pact's 2026 update. Several initiatives are now underway to give this material a new life, including Soprole's Sonrisa Circular program and efforts by major retailers like Walmart and Wenco. A key development is the commencement of HIPS collection by the GIRO management system, in partnership with Soprole, establishing 21 collection points with dedicated containers. Moving forward, the focus is on broader industry participation, aligning packaging design, enabling the use of recycled plastic in food-contact applications, and investing in advanced washing technologies to facilitate the transition of HIPS from waste to resource.
The reclassification of High Impact Polystyrene (HIPS) in Chile from a problematic plastic to a recyclable material signifies a potential paradigm shift driven by evolving market demand and strategic policy interventions. This transition highlights the critical role of demand-side incentives and collection infrastructure in enabling circularity for materials previously deemed difficult to valorize. The success of this initiative will likely hinge on the scalability of collection systems, the development of robust recycling technologies, and the willingness of major industry players to invest in and adopt recycled content, particularly for food-contact applications. Future developments will be shaped by the interplay between regulatory frameworks, technological innovation in recycling, and consumer engagement in collection efforts, ultimately determining the long-term viability of HIPS as a circular resource within the Chilean economy.
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