Under Base Gray Blocker 301

Under Base Gray Blocker 301 - 1 Gallon


Regular price $115.00 CAD
Regular price Sale price $115.00 CAD
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Matsui Under Base Blocker 301 Gray is a base that is printed down first to block dye sublimation on polyester fabrics.


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    Additional Information

    • Easy to mix and print

    • Prevents dye migration in to colors printed on top of Under Base Blocker

    • Great for printing on 100% Polyester, Performance Fabrics and Sublimation

    • Excellent matte down characteristics to push the nap of the fabric down

    • OEKO-TEX® Standard 100 certified, CPSIA and HR4040 Compliant

    • Is “PVC Free” and environmentally safe


    Print Under Base Blocker 301 Gray up to 120 mc in (47 mc cm) and cure at 320°F (160°C). A thicker stencil is preferred to achieve a heavier deposit of Under Base Blocker 301 Gray to provide better coverage of the fabric and prevent migration.


    Note: Due to variations in dyed polyesters, any application whether referenced or not in this technical data sheet should be pre-tested for suitability on the actual production fabric and/or consultation sought with Matsui International prior to printing.


    Special Recommendations:

    Under Base Blocker 301 Gray should be mixed in clean vessels using clean mixing blades and utensils. Any contamination from other ink sources or non-approved additives could make Under Base Blocker 301 Gray test positive for restricted PVC’s.

    • Use Retarder MG 1-5% to help with open time in the screen
    • Use Fixer WF-N 1-5% to help with wash fastness
    • Use Thickener B .25-1% to help thicken the ink
    • Use RV Additive 1-3% to reduce viscosity



    • Shake ink gently or stir before use to avoid ink separation
    • Store by closing the container
    • Do not inhale or ingest
    • Avoid flame, sparks, static electricity, and other ignition sources
    • Dispose in a safe manner in accordance with local/national regulations
    • View MSDS (Material Safety Data Sheet) for additional information

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