Fabric Glow ink by Pint
These are the guidelines to making luminous ink, phosphorescent coatings, glow in the dark screen print ink. Your application may require some adjustments to the technical material below. Please read the Basic Guidelines also for more information. Mix Risk Reactor's Glow in the Dark Pigment into clear vehicles. Any pigment in the medium will obscure the luminosity.
Viscosity of ink should be about 3000-5000 micro-poises. During printing viscosity should be adjusted by using a diluting agent based on printing speed.
Apply a white background coat under the luminous material layer to improve afterglow. Having the glow on top of any other color will diminish the glow strength.
100 um film thickness is required to achieve the best results. If you want the maximum luminous effect use 130-150 um thickness. Sometimes more than one pass will be necessary to obtain the level of glow required.
If screen printing clothes try to use white fabric, any other color will decrease the glow. If using a non-white fabric, place a white layer below the luminous layer for the best glowing effect.
Risk Reactor carries many variations of Glow Powder. Use the chart to determine the powder particle size to suit your needs. As a general rule of thumb, the larger the opening in the mesh the more glow you will have and it is suggested to use 80-100 mesh. Risk Reactor also carries small particles sizes such as the PPSB-06E for more detailed printing.
Due to the nature of the Glow Powder, an anti-settling agent may be required. Photo-luminescent pigment is heavier than most vehicles and settling might occur. Therefore use a viscous vehicle or an anti-settling agent, but always stir before printing.
One kilogram of dry Glow Powder can cover an area roughly 3.3 square meters or 12 square feet with a 150 um thick film. One gram covers approximately 25 square centimeters.
Generally speaking 10%-50% by weight is the best ratio for mixing Glow Powder to a vehicle. The percentage depends on how much glow is desired, how many passes you want to make, the screen mesh size, etc. Determine the thickness, size, and resolution of the printing area. If the base is a color other than white you may need to add more Glow Powder to achieve desired results.