Technical Bulletin - 3Dresyn HDPE-like 3D Resin
Low-modulus engineering photopolymer with HDPE-like mechanical behaviour for additive manufacturing requiring resilient deformation, reduced stiffness and functional compliance.
Overview
3Dresyn® HDPE-like is a low-modulus engineering photopolymer designed to provide a high-density polyethylene-like functional response in additive manufacturing. It is intended for parts requiring resilient deformation, limited stiffness and impact-tolerant behaviour under real use conditions.
Its position in the thermoplastic-like family is to serve applications where parts should remain functional under bending or deformation without requiring rigid structural response.
Headline mechanical and thermal performance
| Property | Typical value | Reference |
|---|---|---|
| Flexural strength | <30 MPa | Internal product positioning |
| Tensile strength | <25 MPa | Internal product positioning |
| Young’s modulus | <800 MPa | Internal product positioning |
| Elongation at break | <100% | Internal product positioning |
| Shore hardness | D60 | Internal product positioning |
| Glass transition temperature (Tg) | <25 °C | Internal thermal characterization |
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This profile reflects a material intended for soft engineering response and deformation-tolerant functional use.
What makes 3Dresyn HDPE-like different
1) Lower stiffness than PP-like and rigid engineering families
HDPE-like is designed for applications where a softer, more deformation-tolerant response is beneficial.
2) Functional resilience
The material is relevant for lightweight technical parts that should bend or absorb local deformation rather than crack or remain rigid.
3) Useful polyolefin-like engineering logic
Its position is especially useful for applications needing resilient soft behaviour without moving into highly elastic flexible resin classes.
Application Guidance
- Resilient covers and shells
- Low-rigidity housings
- Deformation-tolerant technical parts
- Lightweight functional components
Processing Notes
- Printing technologies: SLA, DLP and LCD
- Wavelength range: 385–405 nm
- Compatible with open-parameter systems
- Requires controlled post-curing to preserve intended softness
Normalization and engineering caveats
- HDPE-like positioning reflects engineering behaviour analogy, not direct equivalence to molded HDPE.
- Actual behaviour depends strongly on thickness, geometry and cure workflow.
Conclusion
3Dresyn HDPE-like is positioned as a low-modulus engineering photopolymer for additive manufacturing applications requiring resilient deformation, reduced stiffness and a practical soft engineering response.
This technical bulletin should be used together with the relevant processing, calibration, safety and workflow documentation available in the 3Dresyns® Resources section.