Press Dryness Dropped 3% — What to Investigate?

FAQ

A 3% drop in press section dryness = approximately 12% more steam consumption in the dryer section — a significant cost impact.

Check in order:

1. Felt void volume and CFM — Replace if <60% of new felt values
2. Shower system: Pressure (target 20-35 bar), nozzle condition (check every nozzle weekly), uhle box vacuum (target 30-50 kPa)
3. Nip load settings — Verify against specification
4. Press roll surface condition — Worn or damaged roll covers reduce dewatering efficiency
5. Felt tension — Verify against PAPTEX datasheet for your machine
6. Stock changes — New fiber source, filler type, or chemical additive?

Nature of decline: Gradual = felt degradation (normal aging). Sudden = process or mechanical issue requiring immediate investigation.

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Technical Background

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

Related Resources

• 📖 View our Product Knowledge for more information
• 📋 Browse Troubleshooting related articles
• 📞 Contact PAPTEX Engineers for personalized recommendations for your paper machine

Last updated: July 2026