There 3 different types of pulp processing:
 
Mechanical, pulping by mechanical energy as Stone Growndwood, Refiner Mechanical and Thermomechanical pulping.
 
Hybrid, pulping with combinations of chemical and mechanical treatments as Neutral Sulfite Semichemical, High yield Kraft, High yield Sulfite.
 
Chemical, pulping with chemicals and heat, Kraft, Sulfite, Soda processes.
 
these ways have been improved due to environmental hazards of the hundreds of gallons of chemicals killing local .... EVERYTHING
 
some of the actual products are used for
 
Dry Strength Additives and Polymers:
 
Reduced fiber costs.
Enhance strength in virgin and recycle grades.
Improve value of finished paper and paperboard.
 
Wet Strength Additives:
 
Wet strength resins are available for all grades of virgin and recycled paper, paperboard, and toweling.
Custom polyamide resins are formulated for desired wet strength levels.
 
foaming cleaners:
 
Help clean in hard to reach areas of machines
 
 
Overall, additives increase production and lower costs.
Patented  pulping additive results in more uniform pulp, lessens rejects.
Improves pulping process with lower cooking liquor requirements.
Calbrite pulping additives promote removal of ink and increase pulp in brightness in recycled fiber processing.
Scale- and deposit-control additives improve runnability and pulp quality in digesters, brown stock washers, screen room and bleaching.
Chelants and specialty surfactants help optimize new pulping and bleaching processes and reduce overall chemical costs by controlling metals in the process.
 
 
 
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