Usually card development focused primarily on cotton processing. Hence, it came as no surprise that the production capacity of cotton increased significantly from card generation to card generation: In the coarser yarn segment, the 100 kg/h limit was quickly exceeded. The productivity of man-made fibre carding, however, stagnated. This is exactly the reason why Trützschler chose another path: From the beginning, the current card generation was developed simultaneously for cotton and man-made fibers. The Card TC 11-S is the result for man-made fiber processing.

The reviving agent used for many man-made fiber has an aggressive effect on paint and base metals. As a result, paint may peel off and metal surfaces may become sticky, thus impairing optimal fibre flow in the card. This leads to production limits and frequent production interruptions in cleaning work.
On the Trützschler Card TC 11-S, all plates in the tuft feeder and in the transfer section to the card are made of stainless steel. All covering elements relating to cylinder and doffer consist of high-precision aluminium elements. An anodizing process protects these parts from the aggressiveness of man-made fibres. In the can changer, hosepipe and coiling plate made of stainless steel ensure gentle sliver guidance and sliver coiling.

The enhanced WEBFEED system for the TC11-S is substantially different from the cotton card. For high production application of cotton, a pre-opener system with three rolls is essential. For processing man-made fiber there is a newly developed WEBFEED with only one large single roll, featuring a 50 % larger diameter, special needling and a novel surface finish. These measures combined contribute to the significant production increases. Simultaneously, the WEBFEED system results in improved yarn quality with an average of 30 % less imperfections.

For instance, the rule “the tighter the flat setting, the better the result”, does not apply to man-made fiber. On the contrary; here it is essential to maintain a certain minimum distance. It prevents electrostatic charges that have a negative effect on carding quality and subsequently also on yarn quality. Hence, the T-Con system for man-made fiber carding uses new algorithms and thus provides the basis for precise setting recommendations. The result is a clearly increased production.

There are many blends of cotton with man-made fibres, be it with polyester, viscose or polyacrylic. With the Optional Set TC-MMF, they all can be processed on the Trützschler Card TC 11. The TC-MMF features stainless steel surfaces that take the particular fibre-metal friction values into account. Its clothings are specifically designed for cotton/man-made fiber blends, thus eliminating the settling of finishing. An important distinguishing feature is also the number and type of carding segments of the Multi Webclean system. Because the carding of a blend containing polyacrylic requires, for instance, more segments than the carding of cotton/viscose.