PET, PE, PP, PS, PVC, PC, PLA, HDPE or LDPE films are force-fed to the grinders using tamping screws, which means smooth operation even with contaminated input materials. Depending on version, the grinders are fitted with five or seven rotary blades plus two or three static blades. Being highly wear-resistant, these blades provide additional, significant cost savings.
As usual for Hellweg, these blades use double scissor-cut technology which sets a benchmark in terms of cut quality and dust-free operation, ensures a constant cutting gap and requires no adjustment of the rotary blades.
As a result, the shredding process consistently produces optimum quality flakes with a perfect particle size distribution and geometry. The flakes’ sharp-edged and, above all, flat shape without twists or folds makes them ideal for further processing including transport, washing and, if necessary, delamination. This advantageous technology also minimizes fines which usually cannot be used as a new, valuable raw material.