Sunlu PLA+ Silk Dual Color Filament — Red & Blue, PLA+ Silk Dual-Color 3D Printer Filament

Sunlu PLA+ Silk Dual Color Filament in red and blue is a two-tone PLA+ silk-grade filament intended for FDM/FFF 3D printers. The dual-color spool uses Multi Color technology to create multicolored effects within a single extrusion, producing models that change appearance with viewing angle and light. It is suited for decorative prints, figurines, gadgets and prototypes where a smooth, glossy surface and distinctive color transitions are desired.

Advantages

The filament provides a silky sheen and smooth finish that reduces the need for post-processing. Its glossy surface and vibrant red-blue color shifts deliver an attractive visual effect straight from the printer. In addition to appearance, the PLA+ Silk formulation improves mechanical performance: higher strength, greater flexibility and enhanced impact resistance compared with standard PLA, making prints more durable for both display and functional prototypes.

Suitable for

• Decorative models and figurines
• Prototypes and visual concept models
• Gadgets, housings and display items
• Prints that benefit from glossy, multicolored surfaces

When it may not be suitable

This filament is not intended for high-temperature engineering applications or parts that must withstand continuous thermal load above its heat deflection range. While mechanically improved over standard PLA, it is not a substitute for specialized engineering materials such as ABS, PETG or nylon when chemical resistance, very high heat resistance, or specific mechanical tolerances are required.

Key specifications

• Color: red and blue (dual-color)
• Material type: PLA+ (silk finish)
• 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

Print with standard PLA settings on FDM/FFF printers. Ensure the printer is calibrated and the filament feeds smoothly; recommended extrusion temperature typically aligns with PLA+ ranges (refer to your printer and slicer settings). Use a heated bed if available for improved adhesion, but avoid bed temperatures that exceed the filament's Vicat or heat deflection limits. Store the spool in a dry environment or sealed container with desiccant to prevent moisture absorption that can affect print quality.

What to consider before purchase

• Confirm compatibility with your FDM/FFF 3D printer and filament diameter requirements.
• Consider part operating temperatures relative to the filament's Vicat and heat deflection values.
• Plan for moisture control—store the filament dry to maintain print quality.
• Expect glossy, color-shifting surface effects that depend on print orientation and lighting.

Usage recommendations

For best results, print at recommended PLA+ temperatures for your printer, use moderate print speeds for consistent color transitions, enable retraction settings suited to your extruder, and keep the filament dry. Test small calibration prints to dial in flow and temperature before producing final models.