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Waviness in the seams and fabric panels
As the fabric is wound onto and off of the shaft, it is tightened more at the hems, seams and panels than between the seams.
The resulting tension in the fabric can lead to waviness (e. g. waffle or fishbone patterns) that "digs" into the fabric. The waves
are visible when the unit is open.
Waffling
Because of the production method, waffling may form under certain weather conditions and in certain fabric sizes. This effect
is more visible in unfavourable lighting conditions. The formation of waffling is accelerated and enhanced through wetness
(humidity, rain). If a fabric that has been "softened" in this way is retracted, waffling and wrinkles can become particularly
pronounced.
Weave flaws
Spinning of the yarns as well as warping in the weaving mill and the weaving process itself is executed under tension. The yarn
may break. This will lead to knots. Irregular thread thicknesses are seen as light areas or burls in the fabric.
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