Rieter

Stages in the blending operation

Index

Fig. 37 – Stages of the blending operation

Blending is carried out in three stages  References[17]<//a> (Fig. 37):

  • metering, determination, and precise establishment of the quantities of the individual components;
  • mixing, i.e. bringing together the metered quantities;
  • intermingling, i.e. distributing the components evenly in the body of fibers.

Each stage is as important as the other. However, difficulties arise primarily in intermingling and in maintaining the blend once it has been achieved. The latter is very difficult with fibers of different surface structure and varying energyabsorbing capacity on stretching, because de-blending tends to occur at various processing stages.