In the Elite system of Suessen, condensing zone consists of profile tube with a perforated lattice apron running over it. A delivery top roller pressed on the apron drives the apron. A suction system under the profile tube causes condensation of the strand.

ZINSER

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In ITV-Zinser system, illustrated in figure, condensing zone consists of a revolving perforated apron. The size of perforations in the apron is varied as per the count of the yarn to get the desired condensation.