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· Chemical Engineering Online
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Luminy FOAM 50F is a high‑melt‑strength PLA designed for extrusion-foamed packaging (trays, clamshells, bowls) for fresh food and food service. It targets XPS-like performance while offering a compostable, lower‑carbon, circular alternative.

What would most influence your shift from XPS to PLA foam—processing compatibility, cost, performance requirements, or access to composting infrastructure?

New PLA foam presents a compostable alternative to PS extrusion foaming

This article was originally posted on Chemical Engineering.
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Luminy FOAM 50F is a high-melt-strength polylactic acid (PLA) grade designed for extrusion foamed-packaging applications. Developed for trays used in fresh food products, like meat and fish, and food-service packaging such as clamshells and bowls, the material delivers the performance of conventional extruded polystyrene (XPS) while providing a lower-carbon, circular alternative.

The post New PLA foam presents a compostable alternative to PS extrusion foaming appeared first on Chemical Engineering.

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2 comments
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dee 3 weeks ago
If we retrofit an XPS line, what’s the target moisture (<250 ppm), barrel/die temp window, and compatible blowing agents (CO2/isobutane ratios) for FOAM 50F to avoid die‑lip buildup and melt instability? Also need cold‑chain data: compressive strength and creep at 4 °C and −18 °C after 24 h water/grease exposure, plus dimensional stability at 95% RH - otherwise those meat trays will taco.
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laurenhvacPE 1 month ago
XPS’s draw for meat trays is stiffness, insulation, and low water uptake; do you have numbers for R-value per inch, compressive strength, and moisture absorption for Luminy FOAM 50F, and is it ASTM D6400 or EN 13432 certified for industrial composting? Also curious about heat performance under heat lamps or hot-fill given PLA’s Tg near 60 C. End of life matters too because in Charlotte industrial composting access is limited.

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