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Ref: 06851
Biodegradable Packaging Foam
Moisture-resistant and Biodegradable Packaging Foam and Method of Preparation
Bio-based, biodegradable, water-resistant packaging material for the production of single or short-term use packaging foams.
About
The present invention provides a bio-based and biodegradable alternative to expanded polystyrene (EPS) for the production of single or short-term use packaging foams. It has been discovered that a biodegradable and water-resistant packaging foam can be prepared by co-extruding two polymeric materials that are abundantly commercially available. The two polymeric materials require no chemical modification prior to use, and the extrusion process makes the two polymeric components compatible. The resulting foam retains its integrity after immersion in water for 24 hours. At 10% lignin, the foam is water/moisture resistant.
Applications
Starch-lignin foam is bio-based, providing reduced dependence on petroleum re-serves, and making it eligible for DOD purchasing preferences. Biodegradable, providing in-creased disposal options and lower levels of greenhouse gases. At 10% lignin, there are no deleterious effects on foam density, morphology, compressive strength, or resiliency compared with extruded starch foam. The starch need not be chemically modified by derivitization, thereby reducing material costs, and offsetting the cost of the lignin additive