The HAN is starting to reuse waste plastic using a small shredder, sheet press and injection-molding machine(s). Unfortunately, there are some waste streams containing big pieces of plastics that must be broken in pieces small enough for the current shredder. Our assignment is to design a circular machine that can reduce the size of plastic sheets (800mm max width, up to 6mm thickness) and 10L jerrycans to an acceptable size for the current small shredder.

At the moment the students are working hard on the realization of our big shredder, to hopefully have a working first prototype for the working principle of our concept. The goal for the end of the semester is to have a working prototype for a reduced width of 400mm and a maximal motor power of 0,55 kW. This to maximize the cost reduction, the reuse of waste products and to simplify the design.

The students hope that the HAN Circular Lab is continuing this project to complete the prototype with a sturdy and mobile frame. Also, we hope (after successful tests of the prototype) that the next project group can invest in a decent power-rating electric motor according to our calculations.

• Learn more of this project in this poster presentation (pdf)

Students involved

Mechanical Engineering

• Daan Bos
• Joep Minkhorst
• Lars Peters
• Rik Lagerweij
• Ryan Meijer
• Wybren Draaisma

Source: HAN