SML’s Austrofil spinning lines are well established in the market and known for the production of a great variety of different high-tenacity yarns from PP. Supplementary, they also process PA6 to tear-resistant premium yarns.

The added flexibility enables a wealth of new opportunities, not least for manufacturers of smaller batches of coloured yarn. High-tenacity yarns made of PA6 are primarily used for applications such as fishing nets, tire cord, special ropes or safety nets.

“With the ability to produce PA6 yarns with excellent mechanical properties on SML’s Austrofil HT spinning lines, manufacturers of high-tenacity PP yarns can expand their product range and machine capacity utilisations and as a result the profitability of the line itself”, Stefan Dambauer, Product Manager at SML, explains.

Advanced extrusion and heat treatment 
The processing of PA6 on SML’s HT Austrofil spinning lines is made possible first and foremost thanks to SML’s versatile extruder. Combined with a subsequent static melt mixer, this guarantees both a high melt quality and homogeneity for all polymers. A maximum yarn tenacity is attained, above all, with SML’s unique heat treatment system – a hot air oven. Additionally, the specific horizontal yarn path promotes the creation of PA6 yarn with maximum tenacity values. Both PP yarn and yarn from PA6 are treated in a two-step stretching process. Compared to other machinery concepts, SML’s straight-forward technology helps to save energy and minimizes maintenance costs.

Fast product changes – solution-dyed yarn 
In addition to the high flexibility with regard to different yarn types, rapid and uncomplicated product changeovers play a decisive role when it comes to the profitability of Austrofil HT lines. Unlike the usual process in large-scale plants, the dyeing of the yarns can take place in line with easy-to-handle masterbatches. Fast colour changes contribute significantly to the overall production efficiency. With output quantities of up to 160 kg for PP and of up to 110 kg for PA6, SML’s Austrofil HT spinning lines guarantee maximum efficiency with smaller batches.

Easy operation 
SML Austrofil HT spinning lines have been market-tested hundreds of times, and the first plants processing both PP and PA6 are already in operation at customers. Every line can be comfortably operated and controlled by SML’s advanced control system SMILE, a software solution that supports complete remote control and easy maintenance. SML’s digital data generation and analysing tool bitWise® provides a wide range of opportunities for data-driven decisions, and its focus on the optimisation of production processes is another clear advantage.

Horizontal design for low ceiling hights 
Finally, the compact design and the horizontal line set-up with the specific yarn path allow the installation of Austrofil HT spinning lines at sites with a ceiling height of only 7 metres.

For further information on the wide range of possibilities offered by SML’s Austrofil HT spinning lines, please contact: Stefan Dambauer, [email protected].

Redlham, 24.10.2024