Quantity of waste material


In spite of the emphasis on the proportion of waste in the diagram, it is clear that the quantities to be expected here are relatively small. On average, about 6 - 8% primary waste, consisting of 50% good fibers and 50% contaminants, can be expected. About 90% of the good fiber elimination can be recovered as secondary raw material, and this still contains about 6% trash. Such secondary raw material can be mixed into the same blend up to a proportion of 2.5% without any effect on quality. Up to 5% can be blended with hardly noticeable changes in quality.

As far as possible, no more than 5% should be returned to the blend (for ring spinning).