Why Does My Press Felt Plug So Quickly?

FAQ

Common causes of rapid press felt plugging:

Inadequate shower pressure (<20 bar) or clogged nozzles — Inspect weekly. One clogged nozzle = one accelerated fill stripe.
Chemical precipitation — Check pH levels, implement scheduled chemical cleaning.
Excessive carryover from forming section — Improve first-pass retention.
Felt design too dense for your stock — Specify a more open fiber layer structure.
Uhle box vacuum too low — Check vacuum level (target 30-50 kPa) and slot condition.

Prevention: Optimize shower pressure (20-35 bar), maintain nozzles, schedule chemical cleaning every 2-4 weeks.

This answer is based on PAPTEX's expertise in Press Felt. PAPTEX provides engineered fabric solutions to 200+ paper mills worldwide.

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Last updated: July 2026