Man-Made Fibre
A texturing position costs the same per hour whatever it is running. What changes with denier is how many kilograms come off it.
— kg/h
At the stated efficiency
Output here is the count times the speed and nothing else, which is the arithmetic of the winder rather than a promise about the process: it assumes the position is actually running yarn whenever the machine is counted as up, and machine efficiency is doing all the work of representing string-up, breaks, doffing losses and waiting for an operator. Where a mill measures its own efficiency against delivered kilograms, that measured figure belongs in this field rather than a nameplate number. The draw ratio converts feed denier to textured denier by conservation of mass and takes no account of the small length change that texturing itself contributes, so a measured DTY count usually sits a little above the figure here; where the difference matters, enter the measured count as the feed denier with a draw ratio of one. The conversion cost per kilogram is the honest reason to look at this tool twice. It is the position-hour cost divided by output per position, so it rises as denier falls, and it is why the same machine running the same hours can be profitable on one order and not on another. Nothing here prices the yarn or the POY; it prices the conversion only.
DTY Texturing Output, Doff Cycle & Denier Economics — free, with the formula and a worked example, at Textile School.