What is Paper Machine Clothing?
Paper Machine Clothing (PMC) is the collective term for all engineered fabrics used on a paper machine. These specialized textiles are the invisible backbone of paper production — without them, modern papermaking would be impossible.
The Three Types of PMC
1. Forming Fabric (Forming Section)
- The first fabric the pulp slurry encounters
- Dewaters the 99% water / 1% fiber mixture into a wet paper web (15-20% dryness)
- Made of polyester (PET) and polyamide (PA) monofilaments
- Key metrics: Mesh count, CFM (air permeability), FSI (Fiber Support Index)
2. Press Felt (Press Section)
- Absorbs water squeezed from the paper web by mechanical pressure
- Increases dryness from 15-20% to 40-55%
- Made of needled nylon fibers on a woven base
- Key metrics: Grammage (gsm), void volume, CFM
3. Dryer Fabric (Dryer Section)
- Presses the paper sheet against hot dryer cylinders
- Enables heat transfer for final drying to 92-95% dryness
- Made of polyester (PET) or PPS for high-temperature applications
- Key metrics: CFM, contact area, temperature resistance
How PMC Works Together
Forming Section → Press Section → Dryer Section
(forming fabric) (press felt) (dryer fabric)
0.5% → 18% dry 18% → 45% dry 45% → 93% dry
Each 1% dryness increase in the press section saves about 4% steam in the dryer section. This is why choosing the right PMC at each position is critical for energy efficiency.
Why PMC Quality Matters
- Paper Quality: Forming fabric determines sheet formation and surface quality
- Production Efficiency: Right PMC reduces breaks and downtime
- Cost: While 30-40% of consumable costs, premium PMC lowers total cost per ton
- Energy: Optimized PMC saves 5-15% on steam consumption
Start Your PMC Journey
- 🟢 This article — PMC basics
- 🟡 Fabric Terminology — Learn key specs
- 🟡 PMC Selection Basics — How to choose
- 🟠 Explore our Product Catalog — See PAPTEX solutions
- 🔴 Contact an Engineer — Get personalized advice
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