1.self luminous ,photoluminescent pigment 2. rare earth metal high brightness 3. long afterglow time 4. lower heavy metal
What is photoluminescence?Lightlead photoluminescent materials (commonly called “glow-in-the-dark”) has the ability to absorb light (sunlight, fluorescent, incandescent,etc) and then to emit light.
When ambient darkness occurs, it becomes highly visible, lasting at least 8 hours. Our best products
could last more than 20 hours. Upon removal of the light source, the stored light is gradually released, the strongest glow is produced during
the first 30 minutes of darkness, the most critical period following a power failure or other emergency. Then it fades
over a period of time, when there is light again, it stores energy again. So the photoluminescence process is
circulatory. The bases of most photoluminescent products are photoluminescent pigments that can be incorporated into coat,
paint, ink, fabric, ceramic glaze or porcelain enamel, glass, flexible and rigid molded plastics. Typical products
include self adhesive flexible vinyl tapes, rigid PVC marker strips, and silkscreened signage.
Photoluminescent fabric, enamel-coated sheet metal and ceramic tiles are also available.
What is Strontium Aluminate pigment?Recent research efforts have produced several new inorganic compounds whose photometric characteristics
greatly exceed those of zinc sulphide compounds. These materials include oxides of strontium aluminate
(identified as SrAl) and other proprietary inorganic compounds. These compounds offer much brighter and longer-lasting photoluminescence, and they can formulate (unlike zinc sulphide compounds) to produce a range of colors.
Is it environmental products?Lightlead photoluminescent materials are non-toxic, non-radioactive and contain no phosphorus or lead, or any other hazardous element or chemical.
The term phosphorence is sometimes used to describe luminescence, but Lightlead photoluminescent materials
contain no phosphorus. Lightlead photoluminescent materials differ from reflective materials, which amplify and increase relative brightness
when light is applied. Fluorescent materials are quite different from photoluminescent materials. Fluorescent
materials (such as the 3M fluorescent work zone film or a "hot pink" tag) actually serve to borrow nearby light energy
in nearby wavelengths and concentrate the amount of light returning to the viewer in a certain (for example, day-glo orange) wavelength. Fluorescent films are especially useful in dawn and dusk viewing times, when they appear
particularly bright.Lightlead photoluminescent materials require prior exposure to a light source in order to glow in
the dark.
How much Photoluminescent pigment does it take?This universal question has one answer. It is up to you. The amount of photoluminescent pigment to medium will depend on how much glow desired, cost effectiveness, type of application method etc. The Basic Guidelines dictate from 10% to 50% by weight. If you are producing a low cost item, then a lower percentage would work best for you. If you are screen printing shirts and want to make only one pass, a higher percentage would work better. Please also consider the particle size of the powder and the color of the surface to which the medium is going to be applied. Experimentation will be the best method of determining ratios after following the guidelines found on this paper. Do not hesitate to call us for further help or to answer any other question you might have. We look forward to working with you! As to the Photoluminescent film , you can silk screen printing any safety symbols or pictures on the surface, for safety purpose or just for decoration .The screen printing ink you use is not luminous, the bottom is luminous, so you can see it in the dark! You can also digital carving it into any shapes. Imagining that you stick the moon or star images to the kid's ceiling, they would feel very safe at night.
Long Lasting Photoluminescent Pigment
