Technical Bulletin - 3Dresyn TPU-like 3D Resin
Flexible engineering photopolymer with TPU-like mechanical behaviour for additive manufacturing requiring controlled compliance, deformation tolerance and useful functional flexibility.
Overview
3Dresyn® TPU-like is a flexible engineering photopolymer designed to provide a TPU-like functional response in additive manufacturing. It is intended for parts requiring controlled compliance, lower modulus and functional deformation without moving into ultra-soft elastomeric behaviour.
Its role in the thermoplastic-like collection is to cover the flexible engineering segment where parts must bend, absorb deformation and remain functionally compliant under use.
Headline mechanical and thermal performance
| Property | Typical value | Reference |
|---|---|---|
| Flexural strength | <40 MPa | Internal product positioning |
| Tensile strength | <40 MPa | Internal product positioning |
| Young’s modulus | <900 MPa | Internal product positioning |
| Elongation at break | <30–50% | Internal product positioning |
| Shore hardness | D60–70 | Internal product positioning |
| Glass transition temperature (Tg) | c. 25 °C | Internal thermal characterization |
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This profile reflects an engineering-flexible material intended for functional compliance rather than rigid load-bearing use.
What makes 3Dresyn TPU-like different
1) Controlled engineering flexibility
TPU-like is positioned for parts requiring repeatable deformation and useful flexibility while still preserving an engineering-grade part response.
2) More structured than soft elastomeric systems
Its modulus and hardness window make it relevant for flexible technical components that should retain more structure than ultra-soft flexible families.
3) Useful for functional compliant parts
Suitable for technical geometries where impact moderation, local bending, flexible interfaces or controlled deflection are required.
Application Guidance
- Flexible technical parts
- Compliant covers
- Flexible interfaces
- Impact-moderating components
- Controlled-deflection functional parts
Processing Notes
- Printing technologies: SLA, DLP and LCD
- Wavelength range: 385–405 nm
- Compatible with open-parameter systems
- Requires validated exposure and post-cure to preserve target flexibility
Normalization and engineering caveats
- TPU-like positioning reflects functional behaviour analogy, not direct equivalence to molded TPU.
- Final flexibility depends strongly on thickness, geometry and post-curing conditions.
- Comparisons with flexible competitors require normalization of strain definition and cure workflow.
Conclusion
3Dresyn TPU-like is positioned as a flexible engineering photopolymer for additive manufacturing where compliance, deformation tolerance and controlled engineering flexibility are more important than rigid structural behaviour.
This technical bulletin should be used together with the relevant processing, calibration, safety and workflow documentation available in the 3Dresyns® Resources section.