Biodegradable Polymers for Packaging Applications and Methods of Making the Same
AssigneeFlora Coatings LLC
InventorAtul Tiwari
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Abstract
The invention relates to biodegradable polymer packaging films composed of a blend of different biodegradable polymers. These films provide a sustainable alternative to conventional plastic films, offering similar mechanical strength and enhanced biodegradability. The invention outlines the composition, manufacturing process, properties, and applications of the biodegradable films, which decompose under natural environmental conditions, reducing environmental pollution and contributing to a more sustainable packaging solution.
Claims14
A biodegradable polymer composition for packaging applications, comprising blends of:
- a. Polybutylene adipate terephthalate (PBAT) in the range of 20-70%,
- b. Polylactic Acid (PLA) in the range of 10-40% by weight,
- c. Polyhydroxyalkanoates (PHA) in the range of 10-20% by weight,
- d. Polybutylene Succinate (PBS) in the range of 5-60% by weight,
- e. Polyvinyl alcohol (PVOH) in the range of 5-25% by weight,
- f. Starch-based polymers in the range of 5-30% by weight,
- g. Plasticizers in the range of 1-15% by weight, and
- h. Fillers in the range of 1-20% by weight.
A method of manufacturing biodegradable packaging materials, comprising the steps of:
- a. Blending one or all the biodegradable polymers including PLA, PHA, PBAT, PVOH, PBS and starch-based polymers,
- b. Incorporating plasticizers and fillers into the polymer blend using high-shear mixing to ensure uniform distribution,
- c. Adding optional additives such as antioxidants, UV stabilizers, and colorants,
- d. Extruding the blended polymer composition into films or sheets using conventional extrusion techniques, and
- e. Forming the extruded films or sheets into packaging products using thermoforming or injection molding techniques.
A biodegradable polymer composition for packaging applications, comprising:
- a. Polylactic Acid (PLA) derived from renewable resources such as corn starch or sugarcane,
- b. Polyhydroxyalkanoates (PHA) produced by bacterial fermentation,
- c. Polybutylene Succinate (PBS) produced from natural source,
- d. Polybutylene adipate terephthalate (PBAT)
- d. Starch-based polymers from plant sources,
- e. Glycerol or silicone as a plasticizer, and
- f. Fiber and fragrance compound as a filler,
- wherein the composition is designed to achieve a balance of mechanical strength, flexibility, and biodegradability.
Dependencies are inferred from the claim text.