I. Basic Definition and Material Composition
Core Composition: Based on modified PETG (polyethylene terephthalate-1,4-cyclohexanedimethanol ester) blended with a specialized silk-effect pearlescent masterbatch; some products also incorporate trace amounts of metallic luster additives.
Core Texture: Printed parts feature a refined, soft silk-satin sheen, avoiding the oily, high-gloss look of standard PETG and offering a premium visual appeal far superior to conventional PETG filaments.
II. Key Performance Parameters
Physical Specifications: Standard filament diameter of 1.75mm (tolerance ±0.02mm); net weight of 1kg per spool; length of approximately 233m.
Mechanical Properties: Retains the high toughness, tensile strength, and impact resistance characteristic of PETG; prints are resistant to brittle fracture and offer better UV resistance than standard silk PLA filaments.
Temperature Resistance: Suitable for long-term use at temperatures up to 70°C-significantly higher than the 50°C limit of standard silk PLA-making it more suitable for outdoor applications.
III. 3D Printing Process Parameters
Printing Temperature: Nozzle temperature of 200–230°C; avoid excessive heat to prevent material degradation and the loss of the silk luster.
Bed Temperature: 60–80°C; using masking tape or a PEI build plate significantly reduces the risk of warping.
Printing Speed: 50–100mm/s; moderate speeds prevent shear-induced overheating that could compromise the pearlescent surface finish.
Pre-treatment Requirements: Dry at 60–70°C for 3–4 hours before printing to prevent moisture absorption, which can cause silver streaking or bubbles and ruin the silk texture.
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IV. Typical Application Scenarios
Creative Arts & Figurines: Ideal for printing traditional-style ornaments and trendy collectible figures; the silk luster provides a premium finish directly, eliminating the need for additional painting.
Outdoor Advertising: Light-blocking silk PETG variants can be used to print casings for outdoor 3D illuminated signage, combining high-quality aesthetics with weather resistance. Custom Décor Sector: Suitable for printing "affordable luxury" home décor items and jewelry display trays; the matte satin finish complements high-end display settings. -
V. Production and Usage GuidelinesProduction: Maintain low screw speeds during melt blending and extrusion to minimize shear heat and prevent damage to the pearlescent additives; it is recommended to keep the color masterbatch addition rate below 4%.
Usage: Do not use oil-based mold release agents, as this can cause surface hazing and the loss of the silky sheen; the proportion of regrind material must not exceed 20% and must be thoroughly re-dried.
Avoiding Common Defects: Maintain mold temperatures between 20°C and 40°C and ensure high-polish mold surfaces to prevent hazing or flow marks that could compromise the finished product's silky texture.
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