1. Introduction

Glow in the dark materials can absorb and store light/heat energy, then glow in the dark. They can be recharged and continue glowing unlimited times as long as they get recharged sufficiently. The materials can be charged faster by exposure to sunlight/UV light.

2. Product Description

A. Color Conversion

Original color in the light

Glow color in the dark

B. Color:

Four colors (YC/YA/BA/PA) available for long-lasting glow powder One color (RA) for conventional（Zinc Sulfide） powder

Yellow Green NL-YA			Blue NL-BA
Purple NL-PA			Red NL-RA

C. Brightness:

Two items (YA & YC) are available for the yellow-green powder.Glow of YC is brighter than YA. Please refer to www.colorchange.com.tw for afterglow performance of each item.

3. Applications

A. Available Products & Applicability

B. Long-lasting Glow Powder (Strontium Aluminates type)

a. Product Description

The density of long-lasting glow powder is 3.6, It’s made of strontium aluminates, which is non-toxic and non-radioactive.

b. Properties

The long-lasting glow powder is pigment, suitable for plastic injection and solvent based ink/paint. Its afterglow time is ten times longer than that of the conventional type. Good weather resistance, applicable to both outdoor and indoor.

c. Recommended Concentrations

For solvent based ink/paint 5%~30% w/w(25%)
(For the best result, about 25% concentration is required for 20um film thickness)

For plastic injection/extrusion 5%~15% w/w(10%)
(For the best result, about 0.5% concentration is required for 0.2cm plastic thickness)

d. General Recommendations

Avoid moisture during processing. 2. Avoid direct contact with metals. 3. Avoid frictions at high temperatures.

Guidelines for applications of paint/screen printing ink:

◎Use neutral or weak alkaline clear resin

◎To avoid precipitates of glow powder occurred in glow paint, use high-viscosity resin and add an anti-precipitation agent to the paint. Stirred well before use. Add thinner if necessary. Do not add any heavy metal compounds.

◎Use white, or light color as a background for the best results. Any color other than white will diminish glow.

◎Use a 80-120 mesh screen for screen printing for the best results.

Guidelines for applications of plastic injection/extrusion:

◎When applying long-lasting glow powder directly to plastic injection/extrusion, it is recommended to add some lubricants to mix well and prevent oxidation.

◎Make the long-lasting glow powder processed in cylinders as short as possible.

◎Use plastic of light-color, fluorescent-color, or transparent-color as the base plastic for the best glow strength.

C. Conventional Glow Powder (Zinc Sulfide type)

a. Product Description

Made by Zinc sulfide, the density of conventional glow powder is 4.1, having shorter afterglow time.

b. Properties

Conventional glow powder is pigment, suitable for plastic injection and solvent /aqueous based ink/paint, having brighter start glow.

c. Recommended Concentrations

For solvent/aqueous based ink/paint 5%~30% w/w(25%)
(For the best result, about 25% concentration is required for 20um film thickness)

For plastic injection/extrusion 5% ~15% w/w(10%)
(For the best result, about 0.5% concentration is required for 0.2cm plastic thickness)

d. General Recommendations

Please refer to long-lasting glow powder for recommendations on paint/screen printing ink applications.

Guidelines for applications of plastic injection/extrusion:

◎Use plastic of light-color, fluorescent-color, or transparent-color as the base plastic for the best glow strength.

D. Microcapsulated Glow Powder

a. Product Description

Encapsulated long-lasting glow powder by polymer can avoid oxidation destroying the glowing properties of the powder, which makes it suitable for aqueous based applications.

b. Properties

Microcapsulated glow powder can be directly applied to aqueous based ink/paint.

c. Recommended Concentrations

For solvent/aqueous based ink/paint 5% ~30% w/w(25%)
(For the best result, about 25% concentration is required for 20um film thickness)

d. General Recommendations

Please refer to conventional glow powder for recommendations on paint/screen printing ink applications.

E. Glow-in-the-Dark Masterbatch

a. Product Description

Glow-in-the-dark masterbatch is made by mixing plastic and long-lasting glow powder, which can prevent glow powder turning dark due to oxidization when applied to plastic injection/extrusion.

b. Properties

Dispersed and used easily, can be directly applied to plastic injection/extrusion.

c. Recommended Concentrations

For plastic injection/extrusion 5% ~15% w/w
(For best results, about 10% concentration is required for 0.2cm plastic thickness)

d. General Recommendations

Use plastic in light colors, fluorescent colors, or transparent color as base plastic for the best glow strength.

4. Miscellaneous

A. Particle analyses: type 1 is finer pass 100 mesh, type 2 is finer pass 150 mesh, type 3 is finer pass 200 mesh, and type 4 is finer pass 300 mesh.

B. Fluorescent agents, dye, or pigments can be added to the glow powder to adjust its before glow/afterglow colors. The powder can also be mixed to each other to get the glow color desired. Too many pigments added may diminish glow.

5. Others

A. Storage: Keep sealed in a dry and cool place. Do not use metal containers. Moisture in the air will shorten its shelf life and destroy glow properties. Best within two years if stored correctly.

B. Certifications: EN-71 & RoHS passed. Safe for food grade packing and toys.