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Chemi-Thermomechanical Pulping
Chemi-Thermomechanical Pulping Process: The Chemi-thermomechanical pulping process (CTMP) adds another essential step to wood chip processing. As a modified TMP process, it uses a moderate amount of chemical impregnation during the steaming process, which has a positive effect on the pulp bonding properties while it reduces the amount of fiber reject on fiber debris. Sodium sulfite at 1-5% by weight is introduced into the steaming vessel and the chips are heated for 2 to 10 minutes at 120º - 130º C. The resulting pulp of brighter quality and is very suitable for newsprint and white tissue paper processes. Fibers leaving the chips refining stage still require processing before being suitable for papermaking.

The Chemi-thermomechanical pulping process (CTMP) adds another essential step to wood chip processing. As a modified TMP process, it uses a moderate amount of chemical impregnation during the steaming process, which has a positive effect on the pulp bonding properties while it reduces the amount of fiber reject on fiber debris. Sodium sulfite at 1-5% by weight is introduced into the steaming vessel and the chips are heated for 2 to 10 minutes at 120º - 130º C. The resulting pulp of brighter quality and is very suitable for newsprint and white tissue paper processes. Fibers leaving the chips refining stage still require processing before being suitable for papermaking.  
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Process Related Products
ARC Composites
Use Product Description
Primary Screens ARC S2  
Refiners ARC 855  
Refiners ARC 890  
Refiners ARC 897  
Refiners ARC BX1  
Refiners ARC MX1  
Screens ARC BX1  
Screens ARC MX1  
Mechanical Packing
Use Product Description
Pulp 1730 Mill Pack™  
Pulp 1830 Packing  
Pulper Stock Pump 1830 Packing  
Refiners 1730 Mill Pack™ Use with Spiraltrac P 
Refiners 1730-SC Pump Packing Use with Spiraltrac P 
Washed Stock Pump 1730 Mill Pack™  
Water Pump 1830 Packing  
Mechanical Seals
Use Product Description
Pulp 442 Split Seal Use SC/SC AFL with Plan 32 
Pulp S10 Cassette Seal Use SC/SC AFL with Plan 33 
Pulper Stock Pump S20 Dual Cassette Seal Use SC/SC/SC/CB AFL with Plan 53/54 
Technical Products
Use Product Description
Chain Lubrication 601 Chain Drive Pin & Bushing Lubricant  
Chain Lubrication 715 Spraflex® Gold  
Equipment (all types) 740 Heavy Duty Rust Guard  
Threaded assemblies 800 GoldEnd® Tape  
Process Related Product Case Histories
 
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