Press felts for board and paper machines

The press section has a direct impact on dryness, energy efficiency, sheet properties and machine stability. Press felts must withstand high pressure, temperature, moisture, and mechanical stress while consistently maintaining performance. 

Valmet press felts are designed to: 

• Ensure efficient and stable water removal 
• Maintain runnability throughout their lifetime 
• Resist compaction, wear and marking 
• Deliver predictable, consistent performance 

Bioneer press felts reduce reliance on fossil-based materials using a certified mass balance approach. 

Key advantages: 

• Same technical performance and lifetime  
• No impact on runnability or product quality  
• Certified supply chain (ISCC PLUS)  
• Immediate sustainability improvement  

Bioneer press felts provide an immediate sustainability improvement without requiring performance or operational compromises.

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Valmet Press Felt EMX M Bioneer

This design is especially targeted for board machines. The felt features long lifetime and stable running. The felt has enough water handling capacity to avoid crushing and high CMD stability to avoid wrinkles and folding. The felt structure is optimal against marking. This felt style is used in both center press and linear press concepts in all positions. Felt´s raw materials include biobased yarn with lower CO2 emissions for improving the carbon footprint of the felt.

• Excellent sheet quality for the targeted grade
• Balanced dewatering in the nip and the Uhle boxes 
• Felt openness and void volume is optimized for needed paper grades
• Biobased raw material has been utilized by mass balanced approach to improve carbon footprint 

Valmet Press Felt EMX

This felt has a relatively open and compressible structure that results in less sheet breaks and more production. It has good compaction resistance and batt fiber anchorage, resulting in longer running times. Strong and flexible laminated base gives an excellent dewatering capacity in various positions for all paper grades. Smooth surface ensures good properties for the targeted grade.

• Fast start-up
• Efficient nip dewatering
• Long and stable service life
• Less runnability problems
• Good sheet quality

Valmet's seam felts

Valmet’s seam felts enable a quick and easy installation with reduced manpower and crane time. Valmet has a wide portfolio in seam felts.  
 
Valmet Press Felt TSM has a double or triple layer structure with monofilament yarns and the void volume and openness are adjustable for all paper grades and positions.

Valmet Press Felt TLS is a strong and flexible triple layer seam felt that is especially designed for heavier board grades and high dewatering needs like for example the first press positions of kraftliner machines.

• Safe and easy installation
• Optimized water handling capacity
• Reliable and trouble-free running
• Durable seam structure without marking

Valmet Press Felt TMO/SMO

Unique TMO/SMO treatment upgrades the felt's performance properties such as runnability, lifetime, smoothness and dewatering stability over the whole lifetime. This special TMO/SMO technology can be applied to all Valmet Press Felt designs.

• Faster start-up
• High and constant dewatering capacity
• Improved paper profiles
• Break free running
• Increased lifetime

Other Valmet Press Felts

Valmet has wide portfolios for all printing and writing machines as well as packaging board machines:

Valmet Press Felt LMR
Durable laminated modular structure for board machines to achieve reliable dewatering and long lifetime.

Valmet Press Felt SPM
Special woven structure for high nip dewatering and immediate starts up for printing and writing machines and high-speed board machines.

Valmet Press Felt TSR
Traditional single base felts that offer a large range of possibilities with highly adjustable designs to cover almost all positions specially for printing and writing grades.

Valmet Press Felt AQ
Non-woven structure for high nip dewatering and immediate starts up for printing and writing machines.

Valmet Press Felt STM
Hybrid non-woven and woven structures for high nip dewatering and targeted lifetime for printing and writing machines.