Solvent popping
Source:The SiteAuthor:admin Addtime:2021/6/23 Click:0
Definition
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Small bubbles in the top coat, some of them burst.
Cause
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Excessive film thickness.
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Top coat not allowed to flash off long enough before forced drying.
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Specified spray viscosity not observed.
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Unsuitable hardener or reducer.
Prevention
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Apply paint in normal film thicknesses.
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Keep to specified flash-off times.
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Follow the instructions on spray viscosity, hardeners and reducers on the Technical Data Sheets.
Remedy
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Sand the affected areas lightly with a sanding pad and respray within 24 hours. Do not sand pop marks open.
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Where there are large bubbles / pop marks, sand down the surface completely and reapply the paint system.
