NB Grade
Enhanced Foaming

NB Grade is a polyethylene-based mechanical purging compound that combines carefully selected resins with foaming activity to dislodge contaminants while delivering an effective purging product at a great value. Designed for color and material transitions in both Injection Molding and Extrusion applications.

Processing Temperature Range:

180°C-330°C (355°F-625°F)


    •  Best of Both Worlds: mechanical cleaning with foaming action
    • NB Grade is great at facilitating easier changeovers. While it doesn’t require a soak, NB benefits from foaming power for a deeper clean.
    • Purges most commodity and engineering resins.
    • NB Grade easily purges most production resins across a wide processing temperature range. 


    • Mechanical purge with enhanced foaming action
    • Polyethylene-based purge
    • Designed for color & material changes
    • Strong cleaning action in extrusion
    • Ideal for extrusion
    • Useful for sealing prior to shutdowns
    • No soak time required


    Usage Information

    Temperature Range 180°C to 330°C (355°F to 625°F)
    Minimum Clearance No minimum hot runner gate clearance requirement nor extrusion die or mesh clearance requirement.
    Amount of Purge Typically 1-2 system capacities (actual amount depends on degree of contamination)
    Applications Injection Molding - including hot runners
    Extrusion - profile, sheet, blow molding, cast film & compounding
    Types of Resin Most commodity and engineering grade resins within the processing temperature range


    • No soak time is required for an effective purge.
    • For maximum performance, Asaclean® NB Grade should not be diluted with other materials.
    • Asaclean® NB Grade works best with maximum agitation. Use the maximum safe screw speed with maximum safe back pressure, while keeping the screw in the forward position.


    Physical Form Solid
    Shape Pellets
    Color Transparency and white are mixed
    Water Solubility Insoluble
    Other Solvent Solubility Insoluble for organic solvent under normal temperature
    Stability Stable under normal temperatures
    Reactivity Non-reactive under normal handling and storage conditions
    Conditions to Avoid Do not exceed recommended temperature range.
    Do not allow Asaclean® NB Grade to reside in barrel for more than 30 minutes at temperatures higher than 300°C (570°F).


    Specific Gravity 0.82 at 23°C (73°F)
    Softening Point 120°C (248°F)
    Flashpoint >360°C (680°F)
    Autoignition Temp 400°C (752°F)

    Packaging Options

    • 250 lb. poly-bags (pictured)
    • 1,500 lb. gaylords

    Please Note: The above data should be used for reference only.

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