Biodegradable plastic and manufacture thereof from recyclable plastic
OwnerJeferson Drummondinventor
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Abstract
The present invention is directed to a process for manufacturing biodegradable plastic from high percentage recyclable plastic feedstock and the product thereof. The process comprises receiving recyclable plastic feedstock including high density polyethylene, low density polyethylene, expanded polyethylene, and stretched wrap, separating the plastic feedstock by plastics of like type, grinding the separated plastics into particulate while maintaining the temperature below said separated plastic's decomposition and melting point. The plastics are mixed in proportion, adding a biodegradable additive to the particulated plastic mixture with further mixing to produce the biodegradable plastic. Optionally, the resulting plastic is extruded for later use.
Claims22
A process for producing biodegradable plastic from recyclable plastic, said process comprising:
- receiving recyclable plastic feedstock including high density polyethylene, low density polyethylene, expanded polyethylene, and stretched wrap;
- separating said plastic feedstock by plastics of like type;
- grinding said separated plastics into particulate, maintaining the temperature below said separated plastic's decomposition and melting point;
- mixing said particulated plastics in proportion;
- adding a biodegradable additive to the particulated plastic mixture with mixing.
A process for producing biodegradable plastic from recyclable plastic, said process comprising:
- receiving recyclable plastic feedstock including high density polyethylene, low density polyethylene, expanded polyethylene, and stretched wrap;
- separating said plastic feedstock by plastics of like type;
- grinding said separated plastics into particulate, maintaining the temperature below said separated plastic's decomposition and melting point;
- mixing said particulated plastics in proportion, wherein said particulated plastics comprise about 2% to 15% by volume high density polyethylene, from about 25% to 35% by volume low density polyethylene, from about 33% to 43% by volume expanded polyethylene, from about 15% to 23% by volume stretched wrap;
- adding a biodegradable additive to the particulated plastic mixture with mixing, wherein said biodegradable additive comprises about 0.02% to 3.5% by volume.
A biodegradable plastic produced from recyclable plastic prepared by a process comprising the steps of:
- receiving recyclable plastic feedstock including high density polyethylene, low density polyethylene, expanded polyethylene, and stretched wrap;
- separating said plastic feedstock by plastics of like type;
- grinding said separated plastics into particulate, maintaining the temperature below said separated plastic's decomposition and melting point;
- mixing said particulated plastics in proportion, wherein said particulated plastics comprise about 10% by volume high density polyethylene, about 30% by volume low density polyethylene, about 39% by volume expanded polyethylene, about 20% by volume stretched wrap;
- and
- adding a biodegradable additive to the particulated plastic mixture with mixing, wherein said biodegradable additive comprises about 1.0% by volume, said biodegradable additive is selected from the group of cobalt stearate, ferric stearate, cerium stearate, manganese stearate, and vanadium stearate.
Dependencies are inferred from the claim text.