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New 3D Printable Silicone Rubber by Dow Corning & RepRap at formnext 2016

Published on 2016-11-18. Author : SpecialChem

Dow Corning LC-3335 3D Printable Silicone Test Part
Dow Corning LC-3335 3D Printable Silicone Test Part
FRANKFURT, Germany -- Dow Corning has unveiled Dow Corning® LC-3335 3D Printable Silicone Rubber at formnext 2016 [Nov 15-18]. Developed in collaboration with German RepRap GmbH this breakthrough new materials technology is perhaps the first Dow Corning solution to be formulated specifically for designers seeking to combine the performance benefits of silicone with the design and processing advantages of their additive manufacturing process.

High-performance Silicone Technology


Hugo da Silva, global industry director for lighting and 3D printing at Dow Corning, said:
“LC-3335 3D Printable Silicone Rubber is representative of what close collaboration between a leading materials supplier and a top 3D printing equipment company can achieve. More than simply a technological achievement, this patent-pending breakthrough material introduces the power and versatility of silicone technology into the realm of 3D printing. Dow Corning customers can now combine the uniquely beneficial properties of our silicones with faster prototype development and small series production of highly complex parts.”
  • German RepRap designed its patent-pending 3D Printer to print successive layers of LC 3335 3D Printable Silicone Rubber in a method comparable to the FFF process.
  • Thus, it can form complex silicone parts that would be difficult or impossible to achieve through conventional injection molding. 
  • Each layer of silicone is fully cross-linked through thermal cure to enable parts with mechanical properties that are comparable to molded components.

Properties of 3D Printable Silicone Rubber


3D Printable Silicone
• Test parts printed with LC-3335 Silicone on German RepRap’s platform exhibited the same sharp cure profile of injection molded test samples, as well as 80 percent (on average) of the samples’ mechanical properties.
• Specifically, 3D printed parts demonstrated 70 percent of the tensile strength elongation of injection molded samples, and 90 percent of their tear strength.
• Consequently, with German RepRap’s platform, Dow Corning® LC-3335 3D Printable Silicone Rubber is potentially capable of printing functional prototypes and enabling small manufacturing trials of complex parts.
• Further, the material’s properties closely match those of liquid silicone rubber (LSR), allowing an easy transfer into injection molding processes for high-volume manufacturing.

Committed to 3D Printing Industry


  • Dow Corning is committed to collaborating with leading equipment makers to extend the benefits of its industry-leading silicone materials and expertise to the fast-growing field of 3D printing. 
  • Additive manufacturing promises to accelerate the design-to-production process by quickly converting digital designs into functional parts for low- to medium-volume manufacturing without the time or cost required to first build a molding tool and prototype. 
  • Consequently, the technology can significantly reduce production waste, optimize the supply chain, eliminate tooling and speed the time to market for new designs unachievable through conventional technology.

LC-3555 Printable Silicone Rubber expands design options in automotive, healthcare, cookware, lighting and other applications where traditional LSRs are used. Dow Corning is currently exploring future silicone rubber products for 3D printing, including optical- and medical-quality grades, UV-curable materials and other innovative solutions.

About Dow Corning


Dow Corning a wholly owned subsidiary of The Dow Chemical Company, provides performance-enhancing solutions to serve the diverse needs of more than 25,000 customers worldwide. Among the global leaders in silicones, silicon-based technology and innovation, Dow Corning offers more than 7,000 products and services via the company’s Dow Corning® and XIAMETER® brands. More than half of Dow Corning’s annual sales are outside the United States. Dow Corning’s global operations adhere to the American Chemistry Council’s Responsible Care® initiative, a stringent set of standards designed to advance the safe and secure management of chemical products and processes.

About Dow


Dow combines the power of science and technology to passionately innovate what is essential to human progress. The Company is driving innovations that extract value from material, polymer, chemical and biological science to help address many of the world's most challenging problems such as the need for clean water, clean energy generation and conservation, and increasing agricultural productivity. Dow's integrated, market-driven, industry-leading portfolio of specialty chemical, advanced materials, agrosciences and plastics businesses delivers a broad range of technology-based products and solutions to customers in approximately 180 countries and in high-growth sectors such as packaging, electronics, water, coatings and agriculture.

About German RepRap GmbH


German RepRap GmbH is headquartered in Feldkirchen, Germany, and was originally founded as the German RepRap Foundation (GRRF) in 2010. It is a German manufacturer of industrial 3D printers “Made in Germany.” The company develops and manufactures 3D printers based on fused filament fabrication, and sells these together with the software, filaments and accessories directly, as well as via a global network of qualified sales partners.

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Source: Dow Corning
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