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Is the luminous sticker harmful?
Luminous stickers are harmless.

Luminous stickers are non-toxic, harmless and non-radioactive. It does not need power supply and is an energy-saving product. Other materials related products include tempered glass, PVC, PET and other luminous safety exit direction labels.

Luminous stickers, also known as luminous signs and signs, are made of self-luminous materials with the functions of absorbing and storing light. Visible light such as sunlight and lights can be absorbed in bright places for 20 minutes, and can continuously emit light for more than 12 hours.

Extended data:

The principle of luminous stickers:

Luminous paper is coated with fluorescent substances, and its luminescence has two principles:

1. Natural minerals that can store light are used to absorb part of light energy and store it under the condition of external illumination. When the outside world is dark, it will naturally release a part of the stored light energy, thus producing a luminous effect.

2. Non-woven fabrics are used as raw materials, and after being irradiated by purple light, they produce luminous effect, because the tool of purple light must be used.

The fluorescent substances used now are mainly white powder of zinc sulfide or copper sulfide. When there is light, it will absorb a small amount of energy, and when it leaves the light source, it will emit weak fluorescence, which is green.

People often add a very small amount of activator to the above fluorescent substances: adding 1 copper chloride and copper nitrate can enhance the brightness; Adding substances such as manganese chloride or silver nitrate will be suitable for fluorescent materials to emit different colors of light.

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