REACTIVE PRINTING VS PIGMENT PRINTING
The dominant importance of printing on cellulosic fibre substrates is attributable largely to the market introduction of pigments and reactive dyes at the close of the 1950s. The two systems have different objectives. Pigment printing involves a fairly simple procedure, omitting laborious operations like washing off. Reactive prints meet the highest requirements as regards coloristic and fastness properties. Over the past 25 years both printing systems have been optimized, but specific drawbacks such as the unsatisfactory rubbing fastness of pigment prints and the poor fastness to chlorine of reactive prints are still there. Reactive dyes have recently been improved technically, coloristically and economically by, for example, the development of liquid physical forms. Given the rising level of performance expected of the end-products, it is vital to choose the right printing system.