[Allan]

What design features are required in sprayers handling polymer modified bitumen emulsions?

[Duane]

Polymer modified emulsions often need gentler handling to avoid shear degradation and phase separation, so sprayers should use low shear pumps, smooth flow paths, and good filtration sized to avoid clogging without stripping polymer. Heated lines may be required depending on viscosity, but overheating must be avoided. Uniform pressure control and stable spray patterns are critical because modified emulsions can be more sensitive to nozzle wear and pressure spikes. Recirculation should not over shear the product, and the system should allow accurate rate control at varying speeds.

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