Center close shed

center close shed
Center close shed is produced by imparting an upward movement to those threads which are to from the top line & downward movement to the threads which are to form the bottom line, then after inserting a pick, both the lines meet the center. Here warp threads move in an upward & downward direction from a center line.
Merits:
  1. Power consumption is low.
  2. Wear & tear of loom parts is low.
  3. Less time consumption.
  4. High production.
  5. Equal tension on warp yarns.
Demerits:
  1. Since every thread is moved to form each shed, strain on yarn is more.
  2. Beat-up takes place in the closed shed condition.
  3. Possibility of yarn breakage due to rubbing.
  4. Possibility of weft being move backward.
Uses:
  1. Tapper loom.
  2. Single lift jacquard loom

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