3D printer filament Sunlu PLA+ Silk Tri-Color (blue-green-purple) for FDM printers, PLA+ silk material

Sunlu PLA+ Silk Tri-Color filament in blue-green-purple is a PLA+ silk-grade FDM 3D printing material that produces visible color shifts between blue, green and purple. The filament uses multi-color technology to create multicolored results from a single spool; printed surfaces show a silky gloss and change appearance depending on light angle and viewing perspective. It is intended for decorative prints, figurines, gadgets, prototypes and other projects where a glossy finish and an original visual effect are required.

Advantages

The filament provides a smooth, silky sheen and glossy surface directly from the printer, reducing the need for post-processing. Its formulation improves mechanical performance compared with standard PLA, offering higher tensile and flexural strength, impact resistance and increased flexibility. Dimensional accuracy and a consistent diameter ensure reliable feeding and wide compatibility with most desktop FDM printers.

Suitable for

• Decorative models and display pieces
• Figurines and collectibles with visual color transitions
• Prototypes and concept models requiring good surface finish
• Small gadgets and non-load-bearing functional parts

When it may not be suitable

This PLA+ silk filament is not intended for high-temperature applications or parts that will be exposed to sustained heat above its heat deflection range. For mechanically critical components subjected to heavy loads or continuous high stress, consider engineering-grade materials specifically designed for those conditions.

Key specifications

• Material: PLA+ silk
• Color effect: blue ↔ green ↔ purple tri-color transition
• 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 Sunlu PLA+ Silk Tri-Color using standard PLA settings as a starting point. Recommended nozzle temperature is around the material melting temperature; adjust within the printer and filament manufacturer's suggested range to optimise layer adhesion and surface sheen. Use a heated bed if available to reduce warping, and ensure reliable filament feeding by confirming the spool is mounted without sharp bends. Allow printed parts to cool gradually to preserve surface gloss and shape.

What to consider before purchase

• Intended application temperature — not suitable for prolonged exposure above ~57 °C
• Mechanical requirements — verify tensile, flexural and impact properties meet your use case
• Printer compatibility — designed for typical FDM desktop printers with consistent filament diameter
• Visual effect — color transition depends on model geometry, layer orientation and viewing angle

Usage recommendations

For best results, print at steady temperatures with moderate speeds, calibrate extrusion and cooling to enhance the silky gloss, and test small samples to determine optimal settings for color transitions and surface finish.