METHODS FOR CREATING HIGH PURITY STREAMS OF PLASTICS RECOVERED FROM DURABLE GOODS
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United States of America Patent
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Issued Date -
May 2, 2013
app pub date -
Oct 29, 2012
filing date -
Oct 28, 2011
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Abandoned
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Abstract
A process for purifying plastic from a waste stream can include separating a waste stream into two or more mixtures of flakes with each mixture containing one or more plastic types and performing an automated sorting process on the first mixture to increase the weight percentage of a plastic family in the first mixture. The separation process can include at least one process selected from the group consisting of density separation, electrostatic sorting, froth flotation, and density differential alteration. Prior to the automated sorting process, the first mixture can include at least 80% by weight of one or more plastics from the plastic family.
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