Filament Sunlu PLA+ Silk Dual Color (Black & Blue) for FDM 3D Printers, PLA+ Silk Dual-Color

Sunlu PLA+ Silk Dual Color (Black & Blue) is a dual-color silk-grade PLA+ filament for FDM 3D printers. The filament uses multi-color technology to deliver shifting black and blue tones that change with viewing angle and lighting. It is intended for decorative prints, figurines, gadgets, and prototypes where a glossy, silky surface and accurate detail are required.

Advantages

The material combines a silky sheen and smooth finish with improved mechanical properties compared with standard PLA. It provides vivid, glossy colours straight from the printer, reduced need for post-processing, and enhanced strength and flexibility for more durable prints. Dimensional accuracy and low shrinkage contribute to stable feeding and consistent results across many FDM machines.

Suitable for

• Decorative models and figurines
• Showcase pieces and display models
• Prototypes and functional parts with visual emphasis
• Gadgets and small enclosures requiring good surface finish

When it may not be suitable

This filament is not intended for high-temperature engineering applications: its Vicat softening temperature and heat deflection range limit continuous use at elevated temperatures. It may also be less appropriate for parts that require extreme impact resistance beyond typical PLA+ performance or for applications demanding food-safe or medical-grade certification.

Key specifications

• Colour: Black and blue (dual color)
• Density: 1.23 g/cm³
• Vicat softening temperature: 54 °C
• Heat deflection temperature: 57±3 °C
• Melting temperature: 164 °C
• Melt flow rate: 7±2.5 g/10 min
• Tensile strength: 50±4 MPa
• Elongation at break: 11±3 %
• Flexural strength: 78±5 MPa
• Flexural modulus: 2600±300 MPa
• Impact resistance (X–Y): 78±5 kJ/m²

How to use

Use standard PLA or PLA+ print settings on compatible FDM printers. Recommended extrusion temperatures typically align with the material’s melting range; start within common PLA+ temperatures and fine-tune for best layer adhesion and surface sheen. Ensure good bed adhesion with an appropriate build surface or adhesive, and use calibrated extrusion and dimensional settings to take advantage of the filament’s ±0.02 mm dimensional tolerance. Compatible with most single- and multi-extruder FDM printers.

What to consider before purchase

• Intended operating temperature of printed parts versus the filament’s Vicat/deflection temperatures
• Requirement for glossy, silk-like surface finish versus need for further post-processing
• Printer compatibility with PLA+ filaments and dual-color spools
• Mechanical requirements—tensile strength and flexibility relative to your application

Usage recommendations

For best results print with calibrated extrusion multiplier and moderate cooling to preserve the silk sheen. Test small samples to adjust temperature and retraction settings before committing to larger models; use a stable bed adhesion method to avoid warping and ensure consistent dual-color appearance.