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 His firm Spee3D is better known as a producer of 3D printers for
copper and aluminium, used by customers including the Australian
defence force and U.S. Marines to rapidly print new parts to get
broken equipment back in action without waiting days for spares to
arrive.
"Up until the end of last year, our business was building the 3D
printers, which were then used to build parts," Spee3D co-founder
Kennedy told Reuters.
"Come 2020, and the epidemic hits. We know about the antimicrobial
properties of copper, so we thought 'Can we do something, can we
help out here?'"
Copper's disinfectant powers have long been known and its
antibacterial, antiviral and anti-fungal properties have been
supported by scientific studies.
Spee3D commissioned Melbourne laboratory 360biolabs to look at how
SARS-CoV-2, which causes COVID-19, reacts to copper surfaces.
The results showed that 96% of the virus was killed off in two hours
and 99.2% in 5 hours, compared to no change on stainless steel
surfaces over the same period, Kennedy said.
This is in line with a U.S.-government funded study https://bit.ly/2WdhxZR
published in March that found SARS-CoV-2 remained viable for up to 4
hours on copper, compared with 2 to 3 days on plastic and stainless
steel.
Spee3D then reset some of its machines to be able to coat surfaces
such as door handles and push plates, and has already received
orders from two Australian government departments to resurface door
handles before staff return to work.
The Northern Territory's Trade, Business and Innovation Department
said in a statement it was thrilled to adopt the technology to make
its workplace safer.
The firm is also speaking with a big miner and several major door
handle manufacturers about additional applications, Kennedy said.
SLOW TAKE-UP
Copper had already been making some inroads into the healthcare
sector after trials in hospitals, including in the U.S. state of
Virginia https://www.ajicjournal.org/article/S0196-6553(16)30696-4/fulltext,
in recent years.
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However, attempts by fabricators in Japan, South Korea and Taiwan to sell copper
alloy products into the sector resulted in only a modest take-up, partly due to
costs, said John Fennell, Chief Executive of the International Copper
Association Australia.
"We are seeing outcrops of people adopting this, but not as much as you would
have thought," he said.
COVID-19 looks set to give the metal a boost.
In major copper producer Chile, the country's mines minister recently touted the
use of copper in face masks, such as those produced by a U.S.-Chilean company,
while U.S. miner Freeport McMoRan believes the pandemic will shine a light on
how copper can help improve public health.
"Copper's use in health care equipment and facilities and in public places will
undoubtedly grow significantly when the cost of copper, which has been a barrier
in the past, is measured by the enormous cost to society that is being brought
on by this pandemic," Freeport Chief Executive Richard Adkerson told a briefing
last week.
New manufacturing techniques like 3D printing are also a potential game-changer
as they can allow ultra-thin coatings to be applied quickly, while still taking
advantage of copper's antimicrobial properties and cutting the amount of metal
used, and therefore the cost.
The price of coating a standard office door handle is about A$50-A$100
($33-$65), says Kennedy, although costs will fall over time.
Disappointing copper bulls, it's likely the new coating methods will keep a lid
on the amount of metal used in healthcare, said analyst Lachlan Shaw of National
Australia Bank in Melbourne.
"I think we can confidently say demand for copper for those uses will go up,
quite possibly by a lot. Is that going to shift the dial for global demand? At
this stage I doubt it," he said.
(Reporting by Melanie Burton; additional reporting by Ernest Scheyder; editing
by Richard Pullin)
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