Creating 3D printer feedstock from plastic waste
A collaboration between the UNSW SMaRT Centre and IT asset management company Renew IT has begun turning discarded hard plastics into 3D printer feedstock via SMaRT’s first commercially run Plastics Filament MICROfactorie.
A UNSW-invented Plastics Filament MICROfactorie Technology module has been installed at Renew IT’s Sydney warehouse in Lane Cove and is fully operational by turning plastics destined for landfill into valuable filament.
“Commercialising our Plastics Filament MICROfactorie Technology has taken a lot of time and effort, but it is a sustainable waste, recycling and manufacturing solution. We’re turning the hard plastics found in all modern electronic hardware but not subject to conventional recycling methods, into feedstock for a booming sector,” said UNSW SMaRT Centre Founder and Director Professor Veena Sahajwalla. “Filament is almost entirely imported to Australia and made from petrochemicals, so being able to locally make it from used plastics also reduces the environmental impacts from global freight. 3D printing is a wonderful technology enjoying rapid uptake but the tragedy is until now 3D printing has been reliant on virgin plastics.
“These Plastics Filament MICROfactories have the potential to revolutionise 3D printer filament creation. I look forward to a time when 3D printing feedstock is sourced exclusively from recycled plastics.”
UNSW Vice-President Societal Impact, Equity and Engagement Professor Verity Firth said UNSW’s partnership with Renew IT has the potential to create genuine, large-scale change.
“The combination of Professor Sahajwalla’s pioneering science and Renew IT’s commercial expertise and financial commitment can accelerate genuine change,” she said. “This industry partnership is an exquisite example of UNSW’s commitment to societal impact.”
UNSW Sydney is developing a Societal Impact Framework through which it seeks to maximise progress in environmental sustainability and resilience, social cohesion, health and wellbeing, and economic prosperity for all.
“This venture addresses two wicked issues,” said Renew IT CEO and founder James Lancaster. “Not only does it reduce virgin plastic production by creating 3D printing filament from waste items but it also stops hard plastic ending up in landfill.
“Electronic goods like televisions, computers and printers are being produced in ever-increasing numbers and often with increasingly short lifecycles, so when they do reach end of life, the waste industry’s solution has been to deliver them to landfill.
“Dispatching hard plastics to landfill is not a solution that sits easily with me. To repurpose that plastic into a new product that’s increasingly in demand and which we can sell at a competitive price is a beautiful solution. If 3D printing feedstock can be competitively produced by recycling plastic, we shouldn’t be producing it with virgin materials.”
“It has been years in the making with many ups and downs, and now seeing the team at Renew IT and SMaRT operating the Filament MICROfactorie and making it work really makes you step back and smile,’’ Sahajwalla said.
SMaRT’s head of microfactories, Anirban Ghose, said old office equipment was disassembled to find the “right plastic to go after”, which was then fed into the MICROfactorie.
The plastic gets thermally transformed through controlled heat and cooling, and it’s finally spooled and can get fed into a 3D printer at the end of the process,” he said.
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