3Dresyn LDPE-like Low-Density Polyethylene Flexible Engineering Resin

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

The material exhibits foldable behaviour with shape recovery, making it suitable for soft, flexible and resilient components. 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 very high flexibility, elasticity and impact resistance.

• Soft flexible components and soft-touch parts
• Foldable structures and living hinges
• Impact-resistant lightweight parts
• Seals, containers and fluid-contact components
• Biomedical and food-contact oriented applications (subject to validation)

• Tensile strength: >20 MPa (ISO 527-1 / ISO 527-2)
• Flexural strength: >20 MPa, up to ~30 MPa with optimized processing (ISO 178)
• Young’s modulus: <300 MPa (ISO 527)
• Elongation at break: >100% (ISO 527)
• Impact resistance: Notched Izod >100 J/m (ISO 180)
• Shore hardness: D40–50 (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)

• LDPE-like flexibility with very high elongation
• Very 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 LDPE-like engineering applications, compare adjacent polyolefin-like resin routes when flexibility, rigidity or repeated-deformation requirements change.

• Engineering & Functional 3D Resins
• 3Dresyn HDPE-like
• 3Dresyn PP-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)