Rieter

Waste

Index

The higher fiber loss in air-jet spinning inevitably results in correspondingly higher waste costs.

A few quantitative examples of cost calculations will just give an idea of the overall cost situation (Fig. 52, Fig. 53, Fig. 54). The energy costs for air conditioning are included in these results, but the capital costs for the air conditioning equipment are excluded. Fig. 52 compares the production costs for a Ne 30 (Viscose) yarn in Turkey. The air-jet spinning costs are at a similar level to those for rotor spinning, but considerably lower than ring spinning costs. The costs for a Ne 50 (man-made fibers) yarn are compared in Fig. 53. This yarn is, of course, outside the range of rotor spinning, but again air-jet spinning produces at much lower costs than ring spinning. Finally, Fig. 54 displays the production costs for a Ne 30 (Viscose) yarn, this time in India. It is surprising to note that air-jet spinning is still considerably cheaper than ring spinning, despite the extremely low wage level.

Summarizing, air-jet spinning is, in fact, an economically attractive spinning process.

Fig. 52 – Comparison of spinning costs (Rieter)

Fig. 53 – Comparison of spinning costs (Rieter)

Fig. 54 – Comparison of spinning costs (Rieter)