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UV Coating

sourcehttps://en.wikipedia.org/wiki/UV_coating

time2015/12/28

Wide Application about UV Coating

An UV coating(referred to as UV varnishing) is a surface treatment which either is cured by ultraviolet radiation, or which protects the underlying material from such radiation's harmful effects.

In recent years, manufacturers have formulated ultraviolet curable coatings for applications outside of a factory or laboratory environment. This technology was first developed and commercialized by Professional Coatings Inc, (Cabot Ar) for substrates such as wood, concrete, vinyl tile and LVT. Other companies such as UV Green Cure have continued in the development of new technologies around coating formulation and floor curing machines.

Ultra-violet cured coating can be applied over ink printed on paper and dried by exposure to UV radiation. UV coatings can be formulated up to 100% solids so that they have no volatile component that contributes to pollution. This high solids level also allows for the coating to be applied in very thin films, such as 10 micron bopp plain film. UV coatings can be formulated to a wide variety of gloss ranges. UV coating can be applied via most conventional industrial coating applications as well as by silk screen.

Due to the normally high solids content of UV coating/varnish the surface of the cured film can be extremely reflective and glossy. 80 lb text and heavier weights of paper can be UV coated, however, cover weights are preferred.

UV can be applied on spot locations of the paper or by flooding the page. This coating application can deepen the color of the printed area. Drying is virtually instantaneous when exposed to the correct level of UV light so projects can move quickly into the bindery.

A printed page with UV coating applied can be very shiny or flattened to a matte finish. A good example of UV coated paper is photo paper sold for home printing projects. UV coatings that are not fully cured can have a slightly sticky feeling.

application of uv coating on paper


Application of UV varnishing after lamination of BOPP film.


uv varnishing paper after laminating matte film