The 3-D printing revolution has changed the way we think about plastics. Everything from children’s toys to office supplies to high-value laboratory equipment can be printed.
The potential savings of producing goods at the household- and lab-scale is remarkable, especially when producers use old prints and recycle them.
Buying plastic filament for printing can be expensive, says Joshua Pearce, the lead researcher in the Open Sustainability Technology group at Michigan Technological University. Pearce and his students have whittled the cost of printing to ten cents per kilogram — down from $30 per kilogram.
They made this leap by recycling plastic that had already been printed, using a recyclebot and plastic resin codes developed by the team.
In a new paper from the research group, published inResources, Conservation and Recycling, the authors lay out how they achieved this price reduction and how to recycle 3-D printed objects more broadly.
“The centralized paradigm of both manufacturing and recycling is being challenged by the rise of 3D printing,” Pearce says, explaining that labeling and reusing materials is voluntary.
Current labeling schemes, however, are not detailed enough for 3-D printed recycling. Plastic is not just plastic; there are many kinds, and specific polymers behave in specific ways — which makes a big difference for 3-D printing.
“We want to know about polymers the same way a chemist would,” Pearce says, admitting that the seven codes in the US recycling system fall short. In comparison, China has 140 codes for different polymers. “Currently, the most common 3-D printed plastics are grouped in the category seven polymers in the US,” he adds.
That seven category is the catch-all group and means little as a label. Most widely used and conventionally produced plastics fall into the first and second categories — the same groups that cover plastic water bottles and milk jugs. These can be recycled for 3-D printing, but the two most common plastics for 3-D printing are PLA (polylactic acid) and ABS (acrylonitrile butadiene styrene). PLA is often used as biodegradable dinnerware and ABS is the hard plastic of Lego blocks. Although they’re distinctly different, being lumped with so many others in the seven categories makes it difficult to reuse these plastics in 3-D printing.
To overcome these issues, Pearce and his team developed a new resin code identification system based on the Chinese codes. They focused on polymers that could be recycled in 3-D printing and made the system expandable to accommodate innovations in printing and plastics.
“We also demonstrated how to incorporate recycling symbols into 3-D printed objects using open-source and parametric scripts for our new print codes,” Pearce says. The scripts are freely available on Appropedia.
The Latest on: 3D print materials
via Google News
The Latest on: 3D print materials
- Continuous Multistage Synthesis and Functionalization of sub-100 nm Silica Nanoparticles in a 3D-printed CSTR Platformon January 10, 2020 at 12:42 pm
Most importantly, by assembling various 3D-printed CSTR units we synthesized gluconolactone capped polyethylenimine ... expanding the gamut of flow reactors for material synthesis.
- 3D Printing Of Body Parts Is Coming, Regulations Need to Keep Upon January 10, 2020 at 10:56 am
By Dinusha Mendis, Bournemouth University and Ana Santos Rutschman, Saint Louis University via The Conversation In the last few years, the use of 3D printing has exploded in medicine. Engineers and ...
- Ultimate 3D Printing Store Named U.S. Master Distributor for FLUX Technologyon January 10, 2020 at 10:52 am
Ultimate 3D Printing Store is responsible for sales ... Laser cutters are ideal for a variety of precision cutting and engraving needs. They can be used on a range of materials, including wood, glass, ...
- Transformative 3D printing approach established from insight into developmental biologyon January 10, 2020 at 7:42 am
In a new paper, published in The International Journal of Advanced Manufacturing Technology, teams from the University's School of Engineering and Centre for Reproductive Science have proposed a ...
- 3D printing of body parts is coming fast – but regulations are not readyon January 10, 2020 at 6:00 am
In the last few years, the use of 3D printing has exploded in medicine. Engineers and medical professionals now routinely 3D print prosthetic hands and surgical tools. But 3D printing has only just ...
- U.S. 3D Printing Market key Insights Based on Product Type, End-use and Regional Demand Till 2024on January 10, 2020 at 2:13 am
The U.S. 3D printing market is segmented into material such as metals, plastic/polymer and ceramics. Among these segments, plastics/polymer segment is expected to dominate the overall 3D printing ...
- Managed Print Services Market Drives Growth in New Dimensions with 3D Printingon January 9, 2020 at 9:03 am
Albany, NY -- (SBWIRE) -- 01/09/2020 -- 3D printing is becoming a real-game changer for manufacturing. The printing has resulted in new printers which can print using a wide range of materials, give a ...
- Aerospace 3D Printing Market Size to Reach US$ 6.7 Billion in 2027, Says Stratview Researchon January 9, 2020 at 6:00 am
/PRNewswire/ -- Stratview Research announces the launch of a new market research report on Aerospace 3D Printing Market by Industry Type (Civil ...
- SQ4D Builds the World's Largest 3D Printed Homeon January 9, 2020 at 5:22 am
/PRNewswire/ -- SQ4D Inc. (SQ4D) and its Revolutionary Autonomous Robotic Construction System (ARCS), have built the largest permitted 3D printed home in ...
- 3D printing, E-cigarettes among the most important inventions of the 21st centuryon January 9, 2020 at 4:06 am
3D printing Most inventions come as a result of previous ideas and concepts ... Touchscreen glass Super-thin, chemically strengthened glass is a key component of the touchscreen world. This sturdy, ...
via Bing News