3Dresyn LDPE-like, Low Density Polyethylene like

Highly flexible biocompatible 3D printing resin with LDPE-like mechanical behaviour, combining very low stiffness, high elongation and excellent impact resistance

Product description

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.

Application framework

Designed for functional engineering and biomedical applications requiring very high flexibility, elasticity and impact resistance.

Typical applications

• 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)

Measured mechanical properties

• Flexural strength: >20 MPa, up to ~30 MPa with optimized processing (ISO 178)
• Tensile strength: >20 MPa (ISO 527-1 / ISO 527-2)
• Young’s modulus: <0.3 GPa (ISO 527)
• Elongation at break: >100% (ISO 527)
• Impact resistance: Notched Izod >100 J/m (ISO 180)
• Shore hardness: D40–50 (ISO 868)

Measured thermal properties

• Glass transition temperature (Tg): <25 °C

Measured physical properties

• Density: 1.0–1.1 g/cm³
• Water absorption: ultra low (hydrophobic behaviour)
• Water solubility: ≤1.6 µg/mm³
• Shrinkage: very low
• Appearance: clear, non-yellowing unless pigmented
• Resolution capability: up to 20 µm (process-dependent)

Functional performance characteristics

• 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

Processing and handling performance

• 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

Biocompatibility and regulatory framework

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

Testing & processing disclaimer

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.

Disclaimer

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.

Document reference: TDS-LDPE-LIKE-EN | Version: 1.0 | Last updated: March 2026