Adhesion Loss,Polyesters

Description: Loss of adhesion between the polyester filler and the substrate, resulting in detachment of the filler from the substrate.

  • ORIGIN AND POTENTIAL CAUSES

    » Substrate not carefully prepared
    » Polyester material unsuitable for galvanized substrate
    » Too high surface temperature during forced drying
    » Undercured filler - too much or too little hardener

  • PREVENTION TECHNIQUES

    » Clean and sand substrate thoroughly
    » Follow the manufacturer’s instructions for forced drying
    » Use proper mixing ratio of polyester materials
    » Ensure the hardener is thoroughly mixed

  • REMEDY

    » Sand the damaged repair area well
    » Redo the repair and refinish

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