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Uneven material edges and smoothness
To obtain precise flat edges when sewing elasticated
materials, the front toothed rack feeders must push
forward faster than the rear ones, so that the material
is not stretched. For smoothness the front toothed
rack feeders must also work faster than the rear
ones. With a larger stitching length the material
stays easily smooth. Place the differential feed
motion at "G".
Avoid ruffles by stretching
To avoid seams casting wrinkles in very light materials
or fine nylons, the rear toothed rack feeders must
work faster than the front ones. Thereby the front
toothed rack feeders hold the material taut so that
it does not ruffle. Place the differential feed motion
at "S".
IB_KH4300_33077_LB6.qxd 02.06.2009 13:40 Uhr Seite 19