During warp preparation in particular, the special physical characteristics of the high-stretch synthetic yarns have to be considered. The capacity of the yarns to stretch by as much as 700% demands that they be processed without any friction points, if possible. Friction points cause uncontrolled distortion, which results in uneven dyeings.
For this reason, the yarn tension and stretch have to be monitored and adjusted constantly when processing elastane yarns during warp preparation – a requirement that KARL MAYER has successfully met with its DSE-HH direct warping machine. This high-tech machine is proving itself exceptionally well, especially in premium applications, and has now been complemented by a mid-range version to expand the machine series.
This new machine is designated the DSE 21/21 EC. It has an excellent price:performance ratio, which is ideally suited to the commodity business. This new direct warping machine, with the emphasis on practicality, complements the DSE-HH at the highest technical level and forms part of KARL MAYER’s successful twin product line strategy.
A comparison between the high-tech and the mid-range versions of the direct warping machine
The new DSE-EC is based on the same technical principles as the DSE-HH, but its performance and price have been adapted in comparison with the top-of-the-range model.
One of the main differences between the two direct warping machines lies with control of the cone curve. Cone curve occurs with virtually every bobbin set. It is used to define the different patterns in the bobbin take-off tension between the full and the empty package, and is described by a curve. The difference between the highest and lowest point may be as much as 6%.
It varies from one bobbin set to another and is equalised reliably on the DSE-HH by an automatic cone curve adjustment system. If the manufacturer stipulates the cone curve, the equalising process can be carried out on the basis of the data stored by the producer in the machine. The two processes can also be combined. This also makes the DSE-HH suitable for processing bobbins having unknown patterns of bobbin take-off tension.
If the high-tech sectional warping machine operates with automatic equalisation of the differences in package winding, top-quality elastane warp beams are produced. If the data supplied by the bobbin producer is used as the basis for the warp preparation process, good quality warp beams are produced.
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