Coating and Surface treatment
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We apply a compound to paper wet and then instantly dry it by ultraviolet light. It is available in gloss, matt and silk finishes. UV varnishing can be applied on spot locations of the paper or by flooding the page. This coating solution can also deepen the color of the printed area.
Iriodin is a glossy pigment which is admixed with dispersion or UV varnish and used for creating slightly glossy or metallic surfaces. Iriodin coatings can create interesting iridescent color effects, for example the color impression created by pigment changes when viewed from a different angle. Gold and silver are the most common colors, but many more colors and shades are also possible.
Scented coatings contain microencapsulated scents. Through micro-encapsulation, microscopic scent-bearing capsules are printed as overprint varnish. These capsules are then broken by fingernails or other scratching devices to release the scent. There is wide variety (roughly 200) of fragrances that can be applied, fruits, woods, herbs and miscellaneous such as cappuccino, pizza, tobacco just to mention a few examples.
Glitter varnish is a blend of small coloured particles of metallic polyester film and UV screen varnish. A range of colours and particle sizes are available however the most popular colours are silver and tinted green. The result can be eye-catching, either slightly glossy where the colored pigments are scattered or strongly glossy where the graphical elements are covered with pigments
Cold foil printing is one method to create an eye-catching metallic surface suggesting premium quality. A UV-curable adhesive (ie. a type of glue that is dried by UV light) is printed on the paper in the shape of the design that is to be foiled. Then the foil is pressed onto the paper, and is stripped away where no adhesive was printed.
Hot foil stamping
Besides cold foil printing, hot foil stamping is the other method that can produce realistic metallic surface. A stamp, of the design to be foiled is mounted on the stamping machine above the paper and is then heated. The sheet of foil runs between them so that when pressure is applied from the stamp onto the paper, the foil is fixed to its surface. Because pressure is a main ingredient to hot foiling, the foil has dimension and a distinct feel. Compared to cold foil printing, this method is ideal when the area to be foiled is a small section.
Embossing is a technique for creating a raised pattern on paper or other material. An embossed pattern is raised against the background, while a debossed pattern is sunken into the surface of the material. The procedure requires the use of two dies: one that is raised and one that is recessed. The dies fit into each other so that when the paper is pressed between them, the raised die forces the stock into the recessed die and creates the embossed impression. An embossed pattern is raised against the background, while a debossed pattern is sunken into the surface of the material.