• DuraChain photopolymers deliver breakthrough elastic and tough material properties for digital light processing (DLP) printing through a Photo Polymerization-Induced Phase Separation (PIPS) process
• Several DuraChain materials – Elastic ToughRubber™ Black and Blanc in various hardnesses – will be exclusively offered on the ETEC Xtreme 8K top-down DLP system
• When illuminated during DLP printing, DuraChain 2-in-1 photopolymers phase separate at the nano level into a material that cures into a resilient, high-performance network
• DuraChain photopolymers will enable a new wave of innovations in 3D printing

BOSTON — (BUSINESS WIRE) — May 12, 2022 — Desktop Metal (NYSE: DM), a global leader in additive manufacturing technologies for mass production, today announced DuraChain™ — a first-of-its-kind commercial category of photopolymers that uses a material chemistry process known as Photo Polymerization-induced Phase Separation, or Photo PIPS, to deliver breakthrough material properties.

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Desktop Metal has announced an all-new category of 3D printable resins called DuraChain™ that delivers two-part material strength in a single pot. End-use products such as core components on the DustBuddie from Dustless Tools are already being 3D printed domestically in DuraChain category materials. (Photo: Business Wire)

Parts produced with standard acrylate-based resins used in DLP 3D printing today are prone to shattering or fracturing upon impact. For decades, the 3D printing industry has been working to incrementally improve these material properties and deliver more durable and elastomeric properties.

DuraChain photopolymers solve this challenge with a breakthrough approach that leverages the Photo PIPs process to produce tough and resilient end-use parts while eliminating the need for a two-part resin. When illuminated during DLP printing, DuraChain materials phase separate into two parts at the nano level and then cure into a resilient, high-performing network that offers a variety of benefits. DuraChain was developed by Texas-based Adaptive3D, which was acquired by Desktop Metal in 2021.

Unlike two-part resins, DuraChain photopolymers demonstrate a long pot life of roughly one year, depending on environmental conditions, making them more suitable for volume production and reducing waste from spoiled, unused material.

“DuraChain photopolymers signal a new era in DLP printing that delivers material properties that compete with thermosets in a long pot-life material,” said Ric Fulop, Co-Founder and CEO of Desktop Metal. “Parts printed with DuraChain resins are high performing in a wide range of temperatures and offer other important benefits that will quickly lead to new material innovations in DLP printing.”

The Challenge of Commercializing Photo PIPS

Photopolymers that cure using the Photo PIPs process have been studied by researchers for years but have not been broadly commercialized – primarily because DLP 3D printing hardware has struggled to print the high viscosity resins required to make use of this process.

Most DLP systems feature a bottom-up printing process in which a projector is placed below the build area and illuminates each part layer through a transparent tray, while the part advances upward suspended to a build tray. Because Photo PIPS resins require more energy to cure and are relatively heavy compared to standard resins, they are challenging to suspend from a build plate during bottom-up DLP printing.

Desktop Metal’s DuraChain materials will be printable on one of the additive manufacturing industry’s only top-down DLP systems, the ETEC Xtreme 8K.

A New Line of DuraChain Photopolymers

Several DuraChain materials will be exclusively available on the ETEC Xtreme 8K: Elastic ToughRubber (ETR) 70 and 90, both of which are offered today and which differ in Shore A durometer value. ETR 70 is available in Black while ETR 90 is available in both Black and Blanc, which produces white parts that can be dyed to any color for production.

ETR is already being used to 3D print end-use parts. A case study showcases how Dustless Tools, a maker of construction and industrial vacuum systems based in Utah, uses the rugged ETR material to domestically produce its DustBuddie for demolition hammers. The rugged application requires the material to have high energy return, tear strength, resilience and other durability properties.

Additionally, a new video also showcases the use of ETR 70 Black by Aerosport Additive, a premium service bureau for 3D printed prototypes and production parts outside of Columbus, Ohio. Aerosport has purchased several ETEC Xtreme 8K printers and serves the aviation, automotive, medical, electronic, and military industries, among others.

Parts 3D printed in a variety of DuraChain materials will be on display May 17-19 in Detroit at RAPID + TCT, North America’s largest and most-influential additive manufacturing event. Desktop Metal’s production-capable printing platforms for metals, polymer, elastomers, ceramics, composites, and upcycled wood materials will be showcased in Booth No. 3301 at the main entrance of the show.

About Desktop Metal

Desktop Metal, Inc., based in Burlington, Massachusetts, is accelerating the transformation of manufacturing with an expansive portfolio of 3D printing solutions, from rapid prototyping to mass production. Founded in 2015 by leaders in advanced manufacturing, metallurgy, and robotics, the company is addressing the unmet challenges of speed, cost, and quality to make additive manufacturing an essential tool for engineers and manufacturers around the world. Desktop Metal was selected as one of the world’s 30 most promising Technology Pioneers by the World Economic Forum, named to MIT Technology Review’s list of 50 Smartest Companies, and the 2021 winner of Fast Company’s Innovation by Design Award in materials and Fast Company’s Next Big Things in Tech Award for sustainability.

Forward-looking Statements

This press release contains certain forward-looking statements within the meaning of the federal securities laws. Forward-looking statements generally are identified by the words “believe,” “project,” “expect,” “anticipate,” “estimate,” “intend,” “strategy,” “future,” “opportunity,” “plan,” “may,” “should,” “will,” “would,” “will be,” “will continue,” “will likely result,” and similar expressions. Forward-looking statements are predictions, projections and other statements about future events that are based on current expectations and assumptions and, as a result, are subject to risks and uncertainties. Many factors could cause actual future events to differ materially from the forward-looking statements in this document, including but not limited to, the risks and uncertainties set forth in Desktop Metal, Inc.'s filings with the U.S. Securities and Exchange Commission. These filings identify and address other important risks and uncertainties that could cause actual events and results to differ materially from those contained in the forward-looking statements. Forward-looking statements speak only as of the date they are made. Readers are cautioned not to put undue reliance on forward-looking statements, and Desktop Metal, Inc. assumes no obligation and does not intend to update or revise these forward-looking statements, whether as a result of new information, future events, or otherwise.

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