How to Select the Right Forming Fabric for Your Paper Machine

Understanding Forming Fabric Requirements

Selecting the right forming fabric is one of the most critical decisions affecting paper machine performance. The forming section determines sheet formation quality, fiber retention, and ultimately the physical properties of the finished paper.

Key Selection Criteria

Paper Grade: Different grades require different fabric characteristics:

• Tissue (14–22 gsm): High dewatering, fine fiber support
• Packaging (80–200 gsm): Balanced dewatering and durability
• Fine Paper (60–120 gsm): Excellent sheet surface appearance

Machine Speed: Higher speeds demand greater dimensional stability and optimized dewatering characteristics from the fabric.

Fabric Construction:

• Single-Layer: Basic applications, lower speeds
• Double-Layer: Improved stability and fiber support
• SSB Triple-Layer: Premium performance, high-speed capability

Air Permeability

Air permeability directly affects dewatering and sheet formation. The ideal range depends on:

• Stock consistency
• Headbox design
• Vacuum configuration
• Target sheet properties

Measuring Fabric Performance

Track these KPIs after installation:

1. Fiber retention rate
2. Sheet formation index
3. Fabric life (days)
4. Energy consumption per ton