Method for isolating cellulose and other adhesive materials during the recycling of waste plastics, in particular mixed plastics
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United States of America Patent
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Apr 24, 2012
Grant Date -
Feb 25, 2010
app pub date -
Nov 16, 2007
filing date -
Nov 17, 2006
priority date (Note) -
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Abstract
A method for the removal of wood pulp and other adhering substances from waste plastics in the recycling of all types of waste plastics, of mixed plastics (MKS) in particular, in which foils and pieces from thicker plastic parts of if necessary pre-sorted waste plastics are mechanically pre-shredded into flakes or particles up to a preset size, wherein oversizes are sorted out, the shredded product is charged into a disc refiner together with water, wherein the proportion of flakes and other particles is at least 10% of the total volume, substances adhering on the flakes are rubbed down by the co-operating discs of the refiner to a large extent, and are then present as separate substances, and the substances rubbed down are separated from the plastic particles by a suitable separation method.
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