30
4.7
Thread tension
Together with the looper thread tension, the needle thread tension
influences the final seam pattern. With thin sewing material,
excessive thread tension can lead to undesired gathering and
thread breakage.
Proper setting
If the tension of needle thread and looper thread is identical, the
thread interlacing lies in the middle of the sewing material.
Set the needle thread tension so that the desired seam pattern is
achieved with the lowest possible tension.
A differentiation is made between 3 seam types:
• Tight seams (1)
• Normal seams (2)
• Highly elastic seams (balloon stitch) (3)
Fig. 12: Thread tension
(1) - Tight seam
(2) - Normal seam
(3) - Highly elastic seam
(balloon stitch)
Operating Instructions 171/173 - 02.0 - 09/2019
Operation
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②
③