EPU 40
EPU 40
Polyurethane Resin for 3D Printing - Carbon DLS
EPU 40 Carbon DLS – High-Performance Polyurethane Resin for 3D Printing
EPU 40 is one of the most advanced polyurethane elastomer resins for 3D printing, engineered for exceptional elasticity, tear resistance, and energy return. Developed by Carbon and powered by Digital Light Synthesis™ (DLS) technology, this high-performance material enables the production of functional, durable components with outstanding surface quality and complex geometries — even in intricate lattice structures.
EPU 40 offers a unique balance of flexibility and mechanical strength, making it the ideal choice for engineers, designers, and manufacturers seeking to push the limits of additive manufacturing performance.
Biocompatible, meeting ISO 10993-5 and ISO 10993-10 standards
Designed for Performance and Durability
Thanks to its advanced polymer chemistry, EPU 40 delivers excellent impact absorption and vibration isolation. This makes it the preferred solution for parts subjected to repetitive mechanical stress, such as gaskets, dampers, seals, protective covers, and energy-absorbing components.
Its combination of tear strength and energy return ensures long-lasting performance even in demanding operating conditions — where other flexible materials might fail.
Additionally, EPU 40 is biocompatible, meeting ISO 10993-5 and ISO 10993-10 standards. This allows its use in wearable devices and medical applications, where safety and comfort are essential.
Technical Excellence with Carbon DLS
Among Carbon’s proprietary DLS materials, EPU 40 stands out as one of the most versatile elastomeric resins. It combines the advantages of polyurethane flexibility with the dimensional precision of additive manufacturing.
Key properties include:
High elasticity – maintains structural integrity under stress or deformation.
Tear resistance – ideal for industrial-grade parts subject to repeated mechanical load.
Energy return – quickly restores original shape after compression or bending.
Shore A hardness of 70 – comparable to commercial TPU, yet superior in fatigue resistance and environmental stability.
EPU 40 withstands mechanical stress, torsion, and temperature fluctuations, ensuring consistent performance across a wide range of applications.
Technical properties
The EPU 40 polyurethane resin for 3D printing stands among the best technical materials available for Carbon’s Digital Light Synthesis™ (DLS) technology, thanks to a combination of properties that make it both versatile and high-performing:
High elasticity: allows the material to absorb stress and deformation while maintaining integrity and functionality.
Tear resistance: particularly valuable in industrial applications where the material is exposed to high mechanical loads.
Energy return: quickly recovers its original shape after deformation, improving the durability and efficiency of printed parts.
In terms of hardness, EPU 40 is comparable to commercial TPUs, with a Shore A hardness of approximately 70, but it stands out for its superior resistance to continuous mechanical stress and harsh environmental conditions.
These properties make it especially suitable for components subjected to torsion or repeated stress, such as seals, gaskets, and flexible covers.
Suitable for:
- Applications requiring long-term elasticity and durability.
- Covers, seals, and components exposed to torsional or repetitive forces.
- Resistant to chemicals and temperature variations.
Tailored Flexibility with Lattice Structures
One of the most innovative advantages of the polyurethane resin EPU 40 lies in its ability to be customized through lattice design. The DLS process allows for precise control of elasticity and flexibility within different zones of the same component.
This makes it possible to engineer parts that are soft and cushioning in one area, yet firm and supportive in another, optimizing mechanical behavior, reducing weight, and improving overall performance.
Such structural customization opens new opportunities in product design, especially for footwear, protective gear, automotive interiors, and vibration-isolation components.
Chemical and Thermal Resistance
EPU 40 Carbon DLS maintains its mechanical properties even under extreme conditions. With a high glass transition temperature (Tg) and excellent damping coefficient, it performs reliably despite thermal variations or exposure to aggressive environments.
The material shows low mass uptake when exposed to common industrial or household chemicals, making it suitable for production environments where exposure to oils, detergents, or solvents may occur.
Safe, Reliable, and Biocompatible
Beyond mechanical performance, EPU 40’s biocompatibility certifications (ISO 10993-5, 10993-10) confirm its safety for skin contact. This opens its use to orthopedic, wearable, and consumer applications that require a combination of comfort, flexibility, and durability.
Its Shore A 70 hardness offers the same tactile feel as standard TPU, but with superior resistance to mechanical fatigue and environmental stress. EPU 40 remains stable and functional even when exposed to temperature changes or dynamic loads, ensuring reliability over time.
Prototek and EPU 40 Carbon DLS: advanced Polyurethane Resin for Additive Manufacturing
At Prototek, we offer EPU 40 by Carbon as a cutting-edge polyurethane elastomer for additive manufacturing projects that demand precision, durability, and long-term performance.
By leveraging Carbon’s Digital Light Synthesis™ technology, our 3D printing service enables you to produce functional elastomeric components with unparalleled accuracy and design freedom — while maintaining the highest standards of reliability and safety.
Whether your goal is to improve impact resistance, enhance comfort in wearable products, or design components that combine flexibility and strength, EPU 40 Carbon is the ideal solution to bring your ideas to life.
Contact Prototek to learn how EPU 40 can elevate your next 3D printing project with advanced polyurethane performance, engineered precision, and long-term reliability.
