3Dresyn HDPE-like High-Density Polyethylene Flexible Engineering Resin

3Dresyn® HDPE-like is a flexible engineering photopolymer designed to replicate the mechanical behaviour of high-density polyethylene (HDPE), combining low rigidity, high elongation and excellent impact resistance.

The material exhibits foldable behaviour with shape recovery, making it suitable for components requiring flexibility and durability. It also provides high optical clarity with minimal yellowing and ultra low water absorption. It is available in HV (higher mechanical performance) and LV (lower viscosity) versions for compatibility across a wide range of SLA, DLP and LCD systems.

Designed for functional engineering and biomedical applications requiring flexibility, impact resistance and low stiffness.

• Flexible functional components and living hinges
• Foldable parts and snap-fit features
• Impact-resistant lightweight structures
• Containers, housings and fluid-contact components
• Biomedical and food-contact oriented applications (subject to validation)

• Tensile strength: <25 MPa (ISO 527-1 / ISO 527-2)
• Flexural strength: <30 MPa (ISO 178)
• Young’s modulus: <800 MPa (ISO 527)
• Elongation at break: <100% (ISO 527)
• Impact resistance: Notched Izod <90 J/m (ISO 180)
• Shore hardness: D60 (ISO 868)

• Density: 1.0–1.1 g/cm³ (ISO 1675)
• Water absorption: ultra low (hydrophobic behaviour) (ISO 62)
• Water solubility: ≤1.6 µg/mm³
• Printing shrinkage: no measurable dimensional shrinkage after calibration under validated processing conditions
• Resolution capability: up to 20 µm (process-dependent)
• Appearance: clear, non-yellowing unless pigmented

• Glass transition temperature (Tg): <25 °C (ISO 11357-2)

• HDPE-like flexibility with high elongation
• Low stiffness with excellent impact resistance
• Foldable behaviour with shape recovery (memory effect)
• Hydrophobic performance with ultra low water uptake
• High clarity and optical stability
• Durable under repeated deformation

• Printing technologies: SLA, DLP and LCD
• Wavelength range: 385–405 nm
• HV version: optimized for improved mechanical performance
• LV version: optimized for ease of processing and flow
• Compatible with open-parameter systems
• Optimized using 3Dresyns IFU and calibration workflow

• Biocompatible formulation platform
• Food-contact oriented formulation (application-dependent validation required)
• Final device must be validated according to ISO 10993
• Manufacturing aligned with ISO 13485
• Organo-tin free formulation

Material properties are measured under controlled laboratory conditions and may vary depending on printer type, exposure conditions, layer thickness, build orientation and post-processing workflow.

This material is supplied as a professional engineering material. Final part performance and suitability must be validated by the user according to the intended application and regulatory requirements.

For HDPE-like 3D printing applications, compare adjacent engineering resin routes when the required balance of flexibility, stiffness, elongation and impact resistance changes.

• Engineering & Functional 3D Resins
• 3Dresyn PP-like
• 3Dresyn TPU-like

This technical datasheet should be used together with the relevant processing, calibration, safety and workflow documentation available in the 3Dresyns® Resources section.

Access the 3Dresyns® Technical Resources (IFU, calibration, CRT, post-processing and troubleshooting)