Glow in the Dark Masterbatch for fiber Spinning(PP /PA /PET)
EVERYGLOW Glow in the Dark Masterbatch is a highly concentrated functional additive used to imbue thermoplastic resins with self-luminous properties. Utilizing advanced Earth-Aluminate chemistry, this masterbatch acts as a “light battery”—absorbing energy from UV or visible light sources and emitting it as a steady glow in total darkness.
Unlike older technologies based on Zinc Sulfide, our Photoluminescent Masterbatch utilizes Strontium Aluminate (SrAl2O4:Union européenne, DY 3+), providing up to 10 times the brightness and significantly longer afterglow durations.
Glow in the dark masterbatch Technical Mechanism
The luminescence is achieved through Phosphorescence. When exposed to light, the electrons in the dopants (Europium and Dysprosium) are excited to a higher energy state. In the dark, these electrons slowly return to their ground state, releasing energy in the form of visible photons.
- Absorption Spectrum: 200–450 nm (Sunlight, Fluorescent, LED, 365nm UV light).
- Emission Peak: Typically 520 nm (Yellow-Green) or 490 nm (Aqua-Blue) ,475 nm (Sky-Blue)
Glow in the dark Masterbatch Advantages
- Exceptional Afterglow: Visible to the human eye for over 12 hours in a completely dark environment.
- Chemical Stability: Highly resistant to weather and UV radiation; suitable for outdoor applications when used with UV stabilizers.
- Sustainability: Non radioactifs, non-flammable, and requires no electricity or batteries.
- Processing Efficiency: Optimized pellet size ensures uniform feeding in automated dosing systems, preventing “layering” or separation in the hopper.
Grade Variations
We offer different grades tailored to specific manufacturing processes:
| Grade | Taille des particules | Best For |
|---|---|---|
| Standard (M-Series) | 25–45um | General injection molding, thick-walled parts. |
| Fine (F-Series) | 1–10um | Thin films, fiber spinning, and fine filaments (3Impression D). |
| High-Heat (H-Series) | Encapsulated | Engineering plastics like ABS ,PC or Nylon (up to 300 C ). |
Usage & Loading Rates
The final glow intensity is directly proportional to the loading rate and the thickness of the final part.
- Standard Glow: 5% – 8% loading.
- High-Visibility Safety: 10% – 20% loading.
- Ultra-High Performance: 25%+ loading.
Pro-Tip: To maximize brightness, use a white or reflective base/primer behind the glow-in-the-dark plastic layer. Transparent or translucent base resins (GPPS, Clear PP, PC) yield the best results, as opaque colored resins “mask” the glow.
Manufacturing Best Practices
To maintain the integrity of the luminescent crystals:
- Low Shear: Avoid high-speed mixing or high-shear screw configurations which can break the crystals and reduce glow intensity.
- Back Pressure: Keep back pressure as low as possible during injection molding.
- Coloring: If adding other pigments, use only transparent dyes. Opaque pigments (especially Carbon Black or Titanium Dioxide) will significantly diminish the glow.
- Drying: Most masterbatches are hygroscopic. Dry at 70 C – 80 C for 3 hours before processing to prevent silver streaks or bubbles.
7. Safety & Compliance
- REACH/RoHS: Compliant.
- EN 71-3: Safe for toy manufacturing.
- DIN 67510: Meets international standards for phosphorescent safety markings.
