KraussMaffei line recycles PU insulating foam 

purity glycoLine PU This new KraussMaffei recycling line and process for PU was developed in partnership with BASF, Rampf and Remondis. It uses a twin-screw ZE BluePower extruder in a continuous chemical process to turn the PU components of items such as refrigerators into a recycled polyol, called rPolyol. In order to achieve depolymerization using a glycolysis process, the PU regrind is mixed with depolymerization agents and other additives in the extruder. The rPolyol precursor material can then be processed with other polyols in a metering machine without any adjustments. 

What’s new? The purity glycoLine PU process and line. KraussMaffei has adapted the filtration technology to the market requirements for polyols in extensive tests at its Innovation Center. It showed off the process at the K show. 

Benefits The ability to recycle PU insulating foam — even with contamination — within minutes. Unlike other processes, the continuous extrusion method can efficiently handle PU regrind with contamination levels of up to 30 percent, including residues of other plastics and metals.  

KraussMaffei Corp., Florence, Ky., 859-283-0200, www.kraussmaffei.com/en