Technical Bulletin - 3Dresyn PET-like 3D Resin
Balanced engineering photopolymer with PET-like mechanical behaviour for additive manufacturing requiring moderate stiffness, moderate ductility and practical functional stability.
Overview
3Dresyn® PET-like is a balanced engineering photopolymer designed to provide a PET-like functional response in additive manufacturing. It is intended for parts requiring moderate stiffness, moderate ductility and stable practical performance without moving to the extremes of rigid structural or highly flexible material classes.
Its role in the thermoplastic-like family is to provide a usable mid-range engineering window for functional parts and balanced technical geometries.
Headline mechanical and thermal performance
| Property | Typical value | Reference |
|---|---|---|
| Flexural strength | <50 MPa | Internal product positioning |
| Tensile strength | <30 MPa | Internal product positioning |
| Young’s modulus | <1000 MPa | Internal product positioning |
| Elongation at break | <40–60% | Internal product positioning |
| Shore hardness | D60–70 | Internal product positioning |
| Glass transition temperature (Tg) | >35 °C | Internal thermal characterization |
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This profile reflects a moderate mechanical balance suitable for practical general engineering use.
What makes 3Dresyn PET-like different
1) Mid-range balance
PET-like is positioned for applications needing a practical middle ground between rigid and flexible material families.
2) Useful moderate stiffness and moderate ductility
Its performance window makes it relevant for parts that must not be overly brittle, but also should not become too soft or overly deformable.
3) General functional engineering use
Suitable for housings, shells, balanced technical parts and other applications where a moderate mechanical profile is preferred.
Application Guidance
- Balanced technical parts
- Semi-rigid covers and housings
- General engineering geometries
- Functional parts requiring moderate deformation tolerance
Processing Notes
- Printing technologies: SLA, DLP and LCD
- Wavelength range: 385–405 nm
- Compatible with open-parameter systems
- Requires validated processing to maintain the intended stiffness–ductility balance
Normalization and engineering caveats
- PET-like positioning reflects engineering behaviour analogy, not direct equivalence to molded PET.
- Mechanical values depend on geometry, cure state and post-processing.
- Comparisons require normalization of testing and workflow conditions.
Conclusion
3Dresyn PET-like is positioned as a balanced engineering photopolymer for additive manufacturing applications requiring moderate stiffness, moderate ductility and practical functional stability across a wide range of general technical uses.
This technical bulletin should be used together with the relevant processing, calibration, safety and workflow documentation available in the 3Dresyns® Resources section.