- Resin and varnish
The selected resin should have better light transmittance, and at the same time, because the Photoluminescent FILM is weakly alkaline for a long time, so the resin is better for neutral or weakly alkaline.
Available resins and varnishes: epoxy resin (e440), polyurethane resin (or varnish), amino varnish, polyester resin, acrylic resin, hydroxyl acrylic resin, acrylic acid
Polyurethane varnish (two components), light colored alkyd varnish, fluorocarbon resin, etc.
- Selection of auxiliary agent for sceneway Photoluminescent film
Light-emitting coatings are mainly composed of dispersants and anti-settling agents. Heavy metal compounds cannot be used as additives.
Alkaline soil aluminate system, silicate system, zinc sulfide system can be used, the amount of general 15~50%
Photoluminescent film production technology
The preparation of coating should use glass or enamel containers, Photoluminescent material particle size as small as possible, when the preparation of coating, not grinding, should use high-speed mixing method, the relative proportion of Photoluminescent material is 3.6~4.0, when the preparation of coating is very easy to sink, through the use of anti-settling agent, can improve the storage life of Photoluminescent coating.
Screen printing Photoluminescent signs, signs note
Photoluminescent signs need to use Photoluminescent ink, Photoluminescent ink used in the signage industry is generally the use of manufacturers according to their own signage products use purposes and requirements of their own to get better use effect and economic cost.
Usually is in the ordinary transparent ink with a certain proportion of Photoluminescent materials through simple mixing processing can be made into Photoluminescent ink use, if stored for a period of time to facilitate the ink of the full wetting Photoluminescent materials, the surface of the printed product smooth will be better. The specific selection of transparent ink and silk-screen substrate, simply choose the appropriate substrate for transparent ink.
Amount of environment-friendly long-effect long-afterglow: generally 30-50% of the total amount (luminescent material and transparent ink 1:1 ~ 1:2), according to the brightness requirements of printed matter to determine the amount of luminescent pigment. The higher the content of the ink, the higher the Photoluminescent brightness of the printed products with it, the longer the Photoluminescent time. The viscosity of the processed luminescent ink is about 300 ~ 500pa·s.
When, should control the printing speed, with thinner to adjust the ink viscosity, in order to adapt to the requirements of printing
When using luminescent ink for screen printing pattern and logo, generally choose polyester mesh below 200 mesh, in order to achieve better Photoluminescent effect can choose larger particles of high brightness PHOTOLUMINESCENT FILM Sign (such as gl-2 sl-2, etc.) with 80 ~ 100 mesh screen printing.
Photoluminescent ink is better printed on the white substrate, the use of the bottom reflective effect to improve the printing pattern or logo Photoluminescent brightness and afterglow time. If the substrate is not white or light color, need on the substrate with white or light color of the ink screen, the thickness of 0. 1 ~ 1. 0 mm. Printing Photoluminescent ink coating thickness control at 130 ~ 150 m, Photoluminescent effect is good, such as 80 mesh screen printing twice, you can achieve this thickness.
General in the field of sign requirements such as blinking effect is good, more use of 80 ~ 100 mesh, while the light effect is good, but the printing of the apparent effect is poorer, the surface is rough, sometimes need to use 160 to screen printing on the surface again a finer products (such as 8 c – a) get good effect of the surface smooth, brightness can be guaranteed, but the process is relatively complex, need to consider the cost effect and other factors.