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Water Based Bonding Primer

Purpose: WB Gray Bonding primer X2578 is a VOC compliant primer (< 1.0 Lbs per gal.) in

     a single package. Reduce with water and use this product for structural foam plastic or MDF

     wood substrates where adhesion or surface defects are problematic. This medium gray primer

     builds film quickly, hides moderate surface defects, and provides a sag-free ground-coat that can

     be sanded for smooth finish applications. Recoat with solvent or waterbase topcoats. WB Gray

    Bonding primer X2578 can replace most solvent base primer products and high VOC

    adhesion promoters.

    Recommended substrates: FL900, FN215, MDF

    Mix Ratio: reduce as needed, up to 10% parts by volume with tap water.

…        use of Zahn cups is not recommended

…        Start with 12 parts primer to 1 part tap water or ~ 9 oz (fl) per gallon

…        Always Mix well before use



    Application: Use conventional air pressurized, suction feed, or HVLP spray equipment. Stainless

     steel is recommended for all waterbase applications. Fluid pressure and air pressure will vary

     according to nozzle combination and equipment; note recommended nozzle size 0.055î ‚ 0.070î

…        Conventional wet films are 6.0 - 8.0 mils.

…        Reduced 12:1, a wet film of 6.0 ‚ 8.0 mils will yield between 2.2 ‚ 3.0 mils DFT.

…        primer will not sag or run at higher wet film thickness.

    Sanding and Recoat Schedule (will vary with DFT and shop conditions):

…        ambient room temperature: 2 ‚ 3 hours

or

…        Flash-off: 30 minutes @ RT and Force Dry 30 minutes @ 135 -150 F



    Coverage @ 12:1 reduction

…        250 sq. feet per gal (coating) per 2.5 mils DFT @ 100% transfer efficiency

    Clean up

ß   Water when wet