Leaving the blending chambers, the fibre can once again be put through the opening machines, or if it needs further homogenisation (this applies particularly if one of the components is present in only a very small proportion), submitted to a second or even third blending and relative picking. Finally, the material is transferred to storage cells, ready to be fed, from special hoppers, to the carding room equipment loader .
The storage cells (Figure 1) are equipped with a fixed blending apron whose plucking system is driven by special photocells that control the level of material present inside the hopper.

Fig. 1 Storage cells

The volumetric hoppers, in turn, ensuring (through a control system based on photocells and timers) constant discharging of fibres into the loaders, guarantee the carding room equipment autonomous operation.