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Drafting system of roving frame I Draft Distribution of Speed or roving Frame |The simplex/roving frame is a necessary evil

The drafting section of the roving frame may be 3 over 3 or 4 over 4 with or without apron roller arrangement. Only the 3-over-3 or 4 over 4 roller with double apron drafting system are still to be found in modern machines offered by manufacturers. In general 3/3 drafting system is used, but for higher draft applications 4/4 drafting system is used.

Types of Calenders in Textiles