Glow in the Dark Ink_Long Afterglow Luminous Ink Manufacturer

Packing	1kg/jar, 5kg/pail
Detection	Glows in the dark after absorbing daylight/UV
Printing	Screen, offset

Packing

1kg/jar, 5kg/pail

Detection

Glows in the dark after absorbing daylight/UV

Printing

Screen, offset

Introduction

Glow-in-the-dark ink (also called luminous or phosphorescent ink) uses non-radioactive rare-earth long-afterglow pigments as its light source. The printed film absorbs and stores energy from daylight or UV light, then glows yellow-green or blue-green on its own in the dark — no power and no battery, in a reversible absorb-and-glow cycle with a long service life.

How It Works

Once excited by light, electrons in the long-afterglow pigment jump to an excited state and fall back slowly, releasing energy as visible light — so the glow continues after the light source is removed. Brightness decays exponentially over time: more complete charging and a thicker coating give longer afterglow.

Features

No power needed — charges by day, glows at night
Reversible, repeatable charge-and-glow cycle
Non-radioactive rare-earth material, safe and eco-friendly
Highly visible in the dark for night-time applications

Processes & Substrates

Mainly screen and offset printing, on paper, card, plastic, metal, glass and fabric. Coating thickness can be adjusted to balance afterglow brightness against printing cost.

Applications

Safety markings: stair edges, escape routes, fire exits
Toys, stationery and creative products
Eye-catching packaging effects and gifts
Night-visible labels and outdoor gear marking

Customization & Printed Proofs

Glow color, afterglow duration and coating thickness can all be customized. Tell us the application and target afterglow and we will supply free printed proofs. Tel: 13510998453.

Frequently Asked Questions

Selection, detection, printing and ordering — answered.

How does glow-in-the-dark ink work? Does it need a battery?

No power source is needed. It uses non-radioactive rare-earth long-afterglow pigments that store energy from daylight or UV light and then glow on their own in the dark, in a reversible absorb-and-glow cycle with a long service life.

How long does the afterglow last?

Brightness decays exponentially over time, and afterglow duration depends on the pigment grade and coating thickness. Long-afterglow grades remain visibly luminous for hours in total darkness; we can recommend a grade and thickness for your specific use.

What color does it appear in daylight?

In light the coating looks pale yellow-green or nearly colorless (depending on pigment), then glows yellow-green, blue-green or similar in the dark. Composite versions that show a different color under UV light are also available.

Which printing processes and applications suit it?

Mainly screen and offset printing. Used for safety markings (stair edges, escape routes), toys and creative products, eye-catching packaging effects, night-visible labels and outdoor gear markings.

Is glow-in-the-dark ink environmentally safe?

It uses non-radioactive rare-earth long-afterglow materials that meet environmental and toy-safety requirements; third-party reports such as EN71.3 can be arranged on request. Free printed proofs are available to test the afterglow effect.

Glow-in-the-Dark Ink