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Strings, elimination

1. Stock bundles, referred to as strings, usually arise from the screens, pump impellers, or cleaners.
2. Use adequate and well-maintained screening.
check clearance of the Selectifier screen paddles.
3. Avoid protuberances at pipe joints.
use special flanges after screens, i.e., only metal-to-metal (no gaskets) with all welded joints between final screen and headbox manifold ground and polished .
4. Avoid any irregularity in the headbox, e.g., corroded perforated roll, corroded area over a patch bolt, etc.
5. Avoid felt hair or other such contraries entering the system via broke beater.
maintain exceptional cleanliness in broke beater area.
6. Make sure that deflectors are up to the forming fabric.
water thrown around by table rolls following a leaking deflector can form strings or worms on the wire.
7. Polish slice with jeweler’s rouge.
8. Check condition of the headbox profile bar where used.
check for corrosion and the condition of the bottom edge.

For a related topic, see Worms.

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