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ultra-fine Glow in The Dark powder

TABLE OF CONTENT

目錄
1. 超細夜光粉是什麼
2. 可用的應用程式
3. 可選顏色
4. U超細系列類別
5. 超細系列的特殊性能
6. 生產和粒度穩定性保證
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1. What’s the Ultra-Fine Glow in the Dark Powder

Luminous powder with a particle size range of 2-3 microns to about 10-15 microns is generally considered to be Ultra-Fine Series.

2. Available Applications

This range of luminous powder has tiny particles and is suitable for some production processes or products with special structures that have strict requirement of particle size. For example:

Super-thin coatings or super-thin substrates: Such as tens-of-microns coating layers, or straws.
Super-fine nozzle diameter: Such as spray gun nozzles with a diameter of 0.1-0.2mm.
Super-fine cables or silk threads: Such as filaments with tens-of-microns, or even finer diameter.
High-precision printing processes: Such as flexo printing, gravure printing, offset printing, etc.

3. Available Colors

Yellow-Green and Blue-Green. They appear yellowish-white (slightly yellowish-white) in daytime, and emit yellow-green and blue-green light in the dark.

ultra high yellow-green-blue-green-color-cart

Why are there only these two colors?

Ultra-Fine Series store fewer photons and have weaker brightness. Yellow-Green and Blue-Green are the two colors with the most outstanding luminous brightness among all colors, which can compensate for the influence of fine particles on brightness to the greatest extent. Other colors (such as Sky-Blue) have lower brightness. When their particles are made into ultra-fine range, its luminescence will be very low, and there is no meaning for applications.

4. Ultra-Fine Series Category

GlowUp® Series	Glow Color	DMAX	D90	D50	Brightness (10min)	Paint & Ink					Plastic & Resin
GlowUp® Series	Glow Color	DMAX	D90	D50	Brightness (10min)	Spraying	Screen Printing	Gravure Printing	Flexo Printing	Offset Printing	Extrusion	Drawing
YG	Yellow-Green	18μm	10±2μm	6±2μm	181	●	●	○	●	○	●	○
		23μm	16±2μm	9±2μm	155	●	●	○	●	○	●	○
		37μm	10±2μm	6±2μm	102	●	●	×	○	×	●	○
		37μm	20±5μm	10±2μm	260	●	●	×	×	×	●	○
		47μm	25±5μm	12±2μm	235	●	●	×	×	×	●	○
YGH		47μm	25±5μm	12±2μm	198	●	●	×	×	×	●	○
BG	Blue-Green	37μm	25±5μm	12±2μm	230	●	●	×	×	×	●	×
BG	Blue-Green	60μm	30±10μm	15±3μm	230	●	●	×	×	×	●	×
● Recommended ○ Possible × Not recommended
Testing conditions: DIN 67510 D65 light, 1000LUX, charging 5min

5. Special Properties of Ultra-Fine Series

There are some special properties for Ultra-Fine Series types. Please pay attention to the following matters:

Lower brightness

There is a physical property of luminous powder is that, the smaller the particle, the lower the brightness. The reason is smaller particles can only absorb limited light, so its brightness is lower than that of conventional particle luminous powder (For more information, please refer to the relationship between particle size and brightness).

Therefore, it is recommended to choose Ultra-Fine Series only when conventional particles cannot meet production requirements.

D90 and Dmax indicators:

When checking TDS for particle sizes, the most critical reference items are D90 and Dmax, because these two data represents the situation of large particles in the particle group, and determine whether this particular type can be used smoothly. The commonly used D50 (average particle size) is not recommended as the main reference item here.

Communication is important:

Depending on different terminal applications and production conditions, we have detailed particle size classification for Ultra-Fine Series. As most of these applications have strict requirements for the particle size of luminous powder, we recommend to communicate with us upfront to ensure precise product matching.

6. Production and Particle Size Stability Guarantee

Production

The particle size classification of conventional luminous powder is carried out by screening with a sieve. Its finest type can reach about 20 microns. However, due to the extremely small volume of ultra-fine particles, screening with a sieve is prone to causing mesh clogging.

We have conducted independent design and customized the production equipment. After multiple tests we determined the specific production process and undertook precise resolution technology to distinguish the particle size range to achieve high-precision particle size control.

Particle size stability

In the application of Ultra-Fine Series, the compatibility of particle size with the product and the subsequent stability are important to the production of terminal products, especially the accuracy of large particle control. We use high-precision laser particle size dynamic analysis equipment to monitor and detect particle size distribution in real time, to ensure that the particle size of the luminous powder meets the customer’s technical requirements. At the same time, it can more effectively maintain the high consistency of particle size between different batches and provide customers with stable products.