Luminous signs need to use luminous ink, the luminous ink used in the signage industry is generally the use of manufacturers according to the use of their own products and requirements for their own preparation to get the best use effect and economic cost.
It is usually in the ordinary transparent ink to add a certain proportion of luminescent materials, after a simple mixing processing can be made into luminescent ink for use, if stored for a period of time to facilitate ink wetting luminescent materials, the surface of the printing products will be better. The selection of transparent ink and screen printing substrate, the simple choice of the appropriate substrate for transparent ink.
Amount of glow in the dark powder: generally 30%-50% of the total amount (luminous powder and transparent ink 1:1 ~ 1:2), according to the brightness requirements of the printing matter to determine the amount of luminous pigment. The higher the content of the ink, the higher the luminance of the products printed with it, the longer the luminous time. Processed luminous ink viscosity in 300-500pa; S or so, when printing, should control the printing speed, with thinner to adjust the ink viscosity, in order to meet the printing requirements.
When screen printing pattern and logo with luminous ink, generally choose polyester mesh under 200 mesh, in order to obtain the best luminous effect can choose larger particles of high brightness luminous powder, 80-100 purpose screen printing.
Luminescent ink is best printed on a white substrate, the use of the bottom reflective effect to improve the luminance and afterglow of the printed pattern or logo. If the substrate is not white or light color, you need to use white or light color ink screen printing on the substrate, thickness of 0.1-1.0mm. When the coating thickness of the printing luminous ink is controlled at 130-150 nm, the luminous effect is the best. This thickness can be achieved by using 80-mesh screen printing twice.