Open vs Closed Distribution Systems
topic
In open transport systems, ducting terminates after the last card. In closed systems, excess tufts not taken up by any card are returned to the distributor unit through a circulation path. Closed systems risk nep formation if too much material is present on the circulation path and are inflexible since the card-blowroom association cannot be changed.
Role
The choice between open and closed distribution impacts system flexibility, nep generation, and operational reliability. Open systems are generally preferred for modern installations due to their flexibility and lower nep risk.
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