Corona technology in the processing of cellulosic materials

Abstract

The CORONA technology in the wet processing of cellulosic materials is now being implemented in plant production. The advantages were proved and extensively used as real benefits at ecological, economical and functional levels. Easier and shorter preparation is made, taking advantage of the instantaneous hydrophilization, the facility to remove natural and added impurities, the higher whiteness degree, the higher mercerization degree and the optimal uniformization of the materials. Dyeing with direct, reactive and vat dyes as been re-designed, being possible to get pure colours, higher yield, better uniformity, good fastness, even for incompletely prepared fabrics. The functionalization of cellulosic substrates is achieved with different types of specific products, as fire retardants, aromas, softeners, amongst others, with improvement concerning the adhesion and consequent fastness regarding washing and abrasive procedures.