Open Source Waste Plastic Granulator

Arvind Ravindran, Sean Scsavnicki, Walker Nelson, Peter Gorecki, Jacob Franz, Shane Oberloier, Theresa K. Meyer, Andrew R. Barnard, Joshua M. Pearce*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

In order to accelerate deployment of distributed recycling by providing low-cost feed stocks of granulated post-consumer waste plastic, this study analyzes an open source waste plastic granulator system. It is designed, built, and tested for its ability to convert post-consumer waste, 3D printed products and waste into polymer feedstock for recyclebots of fused particle/granule printers. The technical specifications of the device are quantified in terms of power consumption (380 to 404 W for PET and PLA, respectively) and particle size distribution. The open source device can be fabricated for less than $2000 USD in materials. The experimentally measured power use is only a minor contribution to the overall embodied energy of distributed recycling of waste plastic. The resultant plastic particle size distributions were found to be appropriate for use in both recyclebots and direct material extrusion 3D printers. Simple retrofits are shown to reduce sound levels during operation by 4dB-5dB for the vacuum. These results indicate that the open source waste plastic granulator is an appropriate technology for community, library, maker space, fab lab, or small business-based distributed recycling.

Original languageEnglish
Article number74
Number of pages21
JournalTechnologies
Volume7
Issue number4
DOIs
Publication statusPublished - Dec 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • 3D printing
  • additive manufacturing
  • distributed manufacturing
  • distributed recycling
  • granulator
  • shredder
  • open hardware
  • fab lab
  • open-source
  • polymers
  • recycling
  • waste plastic
  • extruder
  • upcycle
  • circular economy
  • ACRYLONITRILE-BUTADIENE-STYRENE
  • EXTRUSION SYSTEM
  • POLYMER
  • REPRAP
  • POLYETHYLENE
  • LOOP

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