Stock Preparation/Dispersion System
Dispersion Systems
Hot and cold dispersion systems for breaking down stickies, ink particles, and contaminants in recycled fiber. Our dispersion technology improves stock cleanliness, brightness, and paper quality.
Explore Our Dispersion Systems
Complete dispersion systems including pre-heaters, dispersers, and cooling systems — engineered for thorough contaminant treatment in recycled fiber lines.
Why Choose Parason Dispersion Systems?
With over 50 years of engineering excellence, Parason delivers dispersion solutions trusted by 500+ paper mills across 75+ countries.
500+
Mills Served
Worldwide installations
75+
Countries
Global presence
50+
Years Experience
Engineering excellence
24/7
Support
Service & spare parts
Frequently Asked Questions About Dispersion Systems
What is hot dispersion in papermaking?+
Hot dispersion breaks down contaminants like stickies, wax, hot melts, and residual ink by applying heat and mechanical shear simultaneously. Stock is thickened, heated, and passed through a disperser where rotating discs fragment contaminants into particles too small to cause problems.
How does a disperser remove stickies?+
The Disperser operates on thickened, heated stock at high consistency. Heat softens stickies and wax, while intense mechanical shear between rotating and stationary discs breaks them into micro-fragments too small to deposit on machine clothing or the paper sheet.
What contaminants does hot dispersion target?+
Stickies (pressure-sensitive adhesives), hot melt adhesives, wax (from coated corrugated board), residual ink particles (remaining after flotation deinking), and coating fragments. Essential for recycled paper mills processing OCC and mixed waste.
What is the difference between dispersion and deinking?+
Deinking removes ink from pulp — ink is physically separated and discarded. Dispersion fragments contaminants into invisible particles without removing them. The two are complementary: deinking removes bulk ink, dispersion handles remaining stickies and residual ink.
What equipment makes up a complete Parason dispersion system?+
Dewatering Screw with Pneumatic Loading, Booster Maxi Press for further dewatering, Heater Mixer for raising stock temperature, Shredder for breaking stock, Infeeder for controlled feeding, and the Disperser for mechanical contaminant fragmentation.