The Maris Technological Center has developed a new process for the reduction of odors within polymers having post-consumer origins. The materials that can be processed can be the most varied and, thanks to this innovation, it is possible to obtain materials with odor levels reduced to a few parts per million (ppm), thus allowing a renewed use of these resources.
In order to extract effectively the odor contribution, it its necessary to equip the extruder with some degassing points. Besides the addition of particular additives for odor reduction, Maris has devised a special stripping system, thanks to the injection of water along the odor-reduction process.
The table shows tow examples of HDPE coming from bottles for detergents and tanks for fuel.
| MATERIAL | HDPE |
|---|---|
| Polymer | HDPE |
| Origin | Post-consumer |
| Final use | Same use or different uses |
EXTRUDER SETUP | |
|---|---|
| L/D | 36 - 48 |
| Degassing points | 2 |
| Special equipment | Gear pump |
| Screen changer | Automatic |
| Cutting system | Strands/Underwater |
| RECIPE | |
|---|---|
| Detergent bottles + water or additives | 100% |
| Fuel tanks+water or additives | 100% |