What are inks, polishes and varnishes?
Erica Erica
“Varnish, ink and glazing agents offer versatile coating applications but can cause repulsion due to incorrect usage or ink failure.”
Varnish, a versatile synthetic resin, typically refers to the transparent film applied to the surface. It consists of base materials and additives, but does not incorporate any pigments, making it a type of paint that contains no colorants. The main components are resins and solvents or a combination of resins, oils, and solvents. Upon application to an object’s surface, a protective, decorative, and specialty-infused coating is formed. Despite its advantages, varnish has the tendency to emulsify. Nevertheless, it serves as an invaluable auxiliary material when used in conjunction with other paints. As such, there is no significant difference noticed after its application.
Ink, a crucial print material, conveys patterns and characters onto a substrate through printing or inkjet painting. It consists of resins, pigments, fillers, additives, and solvents. It is utilized in various printing processes for books, magazines, packaging, decoration, architectural design, and electronic circuit boards. With the increasing demands of society, the applications of ink have become more widespread.
Glazing agent, also known as glazing wax, is a paste formed by dissolving beeswax and Brazil wax in turpentine. Once applied to the surface of a coating film, it enhances the brightness of the area, facilitates waterproofing and material protection, extends the lifespan of the material, improves the appearance, and enhances the color of the paint surface.
In some instances, varnish is applied after the ink has dried to enhance the color, but problems such as repulsion may occur. The main reasons for this phenomenon are uv ink drying and ink failure. The addition of excessive amounts of drying oil, varnish, or tack remover to the ink, or the inclusion of anti-adhesive additives like silicone oil, can lead to a repulsive reaction with the uv varnish, resulting in an inability to coat or an uneven application, and hair loss, flowers, pitting, and pinholes. Moreover, excessive dust attached to the uv ink surface after powder spraying and the use of uv varnish with low viscosity and a thin coating, high surface tension, and insufficient wetting, leveling, and lipophilicity can also cause these issues.
