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density that is achieved matches the package density exactly thanks to software-controlled yarn laying. The result: with PreciFX packages, dyeing plants achieve dyeing results that are continuously reproducible. Particular utilisation potential is yielded by the fact that PreciFX extends the freedom with which parameters can be selected and combined. The specific package profile, i.e. the outer shape and inner structure of the dye package, can thus be matched precisely to the requirements of the dyeing process at Bühler's plant. This individualisation of package design calls for carefully thought-out package engineering, but leaves many process optimisation options open for the future that can be exploited jointly with the dyeing plants if their process requirements are known. Specific options for process optimisation thanks to new flank design Dye packages of the new design, labelled for dispatch to the customers.

With PreciFX the flank design of the packages can be configured deliberately thanks to traverse variation over the diameter . Working with Oerlikon Schlafhorst technologists, the experts at Hermann Bühler AG have developed packages with rounded flanks. The process previously required of mechanical flank breaking prior to dyeing, which damaged the yarn, can now be dispensed with completely. And that has a positive effect on fault-free unwinding behaviour following dyeing, because the shifting of yarn layers can be avoided. This means that the rewinding process following dyeing can possibly be eliminated completely thanks to the uniform, pattern-free package build with round edges and the elimination of flank breaking. Even after using the PreciFX system for a comparatively short time (compared with drum winding, which has been proven over a number of years), Hermann Bühler AG is convinced by the performance of the system. The technology experts of Oerlikon Schlafhorst and Hermann Bühler AG are eagerly formulating new optimisation options daily, in order to explore the potential of PreciFX to the full.

Left to right: Kurt Ritz (winding mill manager at Hermann Bühler AG), Herbert Rüskens and Klaus Kamphausen (Oerlikon Schlafhorst Technology) assess the PreciFX packages.

PreciFX is proving its worth in full production at Hermann Bühler AG.

Oerlikon_01_2009_e_I1.pdf  

Vice President Research & Development Oerlikon Schlafhorst Issue No. 1/2009 e News Technology Contents Innovations Customers & marke...

Oerlikon_01_2009_e_I1.pdf  

Vice President Research & Development Oerlikon Schlafhorst Issue No. 1/2009 e News Technology Contents Innovations Customers & marke...

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