Methods for reducing contamination in plastics recovered from durable goods
AssigneeMBA Polymers, Inc.
InventorsBrian L. Riise, Ron C. Rau, Michael B. Biddle
Life of this patent
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Abstract
A process for reducing the content of residual organic substances in mixtures of plastics from durable goods can include separating a feed stream into two or more mixtures of flakes and preforming a cleaning process to remove a portion of one or more of the absorbed organic substances from one or more of the mixtures. Each mixture can contain one or more plastic types and at least one organic substance absorbed into the one or more plastic types. The flakes in the mixtures can have an average particle diameter of less than 10 millimeters.
Claims28
A process for reducing the content of residual organic substances in mixtures of plastics from durable goods comprising
- separating a feed stream into two or more mixtures of flakes, each mixture containing one or more plastic types and at least one organic substance absorbed into the one or more plastic types, wherein the flakes in the mixtures have an average particle diameter of less than 10 millimeters;
- and
- performing a cleaning process to remove a portion of one or more of the absorbed organic substances from one or more of the mixtures.
A process for reducing the content of residual organic substances in mixtures of plastics from durable goods comprising
- separating a feed stream into two or more mixtures of flakes, each mixture containing one or more plastic types and at least one organic substance absorbed into the one or more plastic types, wherein the flakes in the mixtures have an average particle diameter of less than 10 millimeters;
- and
- vacuum devolatilizating at least one of the mixtures to remove a portion of one or more of the absorbed organic substances from the at least one mixture.
Dependencies are inferred from the claim text.