Continuous bleaching by J-Box systems

The main purpose of the continuous bleaching system, whether in the rope form or in open-width form, is to reduce the time of bleaching and the cost of labour involved. Continuous bleaching in J-Box in rope form was started in the late in 1930s with the introduction of hydrogen peroxide [10, 11] and plant scale equipment had been built and a suitable procedure was developed [12]. In 1942, the unit used in the bleach range was called a J-Piler [13], but by 1952 the name had become J-Box and bleacher s dream of one-step process had finally come true [14]. 

Many modifications of the continuous bleaching sequences have been suggested [15]. Fig. 7-13 shows a typical three-stage (singe — desize — scour — bleach -  

Recipe for One-Stage Bleaching with Sodium Chlorite 

Additives Cotton Polynosic/Cotton Polyester/Cotton 

The foilwing are the advantages and disadvantages of continuous rope bleaching in J-Box Advantages  

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