The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2012
Filed:
Nov. 16, 2007
Michael Hofmann, Buxtehude, DE;
Alexander Gercke, Bad Oldesloe, DE;
Michael Hofmann, Buxtehude, DE;
Alexander Gercke, Bad Oldesloe, DE;
CVP Clean Value Plastics GmbH, Buxtehude, DE;
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.