3Dresyn IM-SF Cocoon - Non-Water-Soluble Soft Sacrificial Resin for Wax & Silicone Injection

3Dresyn® IM-SF Cocoon is a soft and flexible sacrificial photopolymer designed for the fabrication of cocoon-type molds intended for manual removal after casting of soft materials.

Designed for use in vat photopolymerization systems (SLA, DLP and LCD) within controlled professional environments. Suitable for the fabrication of non-water-soluble sacrificial cocoon molds for soft material injection workflows.

• Soft flexible cocoon sacrificial molds
• Molds for wax and RTV silicone injection
• Otoplastic and hearing aid workflows
• Sacrificial tooling for soft materials

• Tensile strength: <6 MPa (ISO 527-1 / ISO 527-2)
• Flexural strength: <10 MPa (ISO 178)
• Young’s modulus: <300 MPa (ISO 527)
• Elongation at break: <200% (ISO 527)
• Shore hardness: A90 (ISO 868)
  
• Low tensile strength (ISO 527 indicative)
• Very low shrinkage: <1% (internal method)
• High resolution: up to ~20 µm (process-dependent)

• Printing shrinkage: no measurable dimensional shrinkage after calibration under validated processing conditions
• Very low viscosity: <50 mPa·s (internal method)
• Low viscosity for improved printability
• Viscosity: <150 mPa·s at 23°C ± 2°C (ISO 3219)

• Soft and flexible mechanical behavior
• Controlled mechanical breakage without damaging soft casts
• Non-water-soluble sacrificial system
• Optimized for cocoon wall thickness ~1 mm
• Suitable for injection of waxes and RTV silicones
• Breakage can be facilitated by hot water treatment prior to removal

• Printable with most commercial and professional SLA, DLP and LCD 3D printers
• Organo-tin free formulation

Recommended hot water treatment before breaking the cocoon. Heating the printed cocoon in hot water is recommended to soften and embrittle it, making manual breakage easier and safer for the cast. As a guideline, approximately 10 minutes of immersion in hot or boiling water at up to 100 °C embrittles the cocoon wall, so that it can be broken and peeled away with minimal force and without damaging the wax or silicone part inside. Immersion time and temperature should be adapted to the geometry, wall thickness and the thermal sensitivity of the cast material.

Material performance depends on printer type, exposure conditions, mold geometry and casting workflow. Breakage behavior and final results must be validated under the intended application conditions.

• Soft flexible sacrificial cocoon system for delicate applications
• Optimized for thin wall cocoon molds (~1 mm)
• High resolution with very low shrinkage
• Compatible with SLA, DLP and LCD technologies
• Easier breakage after a simple hot water treatment, with no solvents required

This material is supplied as a professional manufacturing material and is not marketed as a finished product. Final casting performance, breakage behavior and process validation remain the responsibility of the user depending on printer, geometry and workflow conditions.

Use these related 3Dresyns pages to navigate adjacent material and process routes within the same technical workflow.

• Easy-Break Cocoon Sacrificial 3D Printing Resins
• Sacrificial & Mold-Making 3D Resins

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)