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UV-coating

UV-curing is a photochemical process to dry or "cure" inks, coating layers, glues, and other materials by using ultraviolet light. This technology has been successfully applied in other sectors (graphics, wood, automotive, telecommunications...) since the sixties.

UV-curing represents about 4% of the actual industrial coating market.

Ultraviolet radiation is an electromagnetic radiation with wavelengths from 1 to 400 nanometre. There is a distinction between UV A (200-400 nm), UV B (280-230 nm) and UV C radiation (< 280 nm). For the treatment of surfaces radiation from all three ranges are being used. Besides oligomers and monomers, the UV formula also includes a photo-initiator. Under UV light, this compound is decomposed into two reactive parts (radicals) that will further initiate the polymerisation and lead to the formation of a three-dimensional network. In this manner, it will take only seconds to cure the formula.

This technology is an interesting alternative to traditional water and solvent based processes by the use of 100% systems and aqueous formulas.

A case study displays exceptional results of UV-curing!

Centexbel scientists improved the resistance to abrasion in a spectacular way by the application of UV technololgy.
By adding 10% UV-binder into an aqueous dispersion applied on a 100% Trevira CS fabric by means of a pad mangle and UV curing doubles the resistance to abrasion of curtains !

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Important advantages to the textile sector:

  • energy efficiency
  • production efficiency
  • low emission of VOC
  • application on temperature sensible materials
  • compact appliance