Fish Eyes

What it is:

Defects in coatings characterized by small circular craters that look like a fish’s eye.

Causes:

As release agents are designed to prevent adhesion between surfaces, they can interfere with paint adhesion or plating, resulting in a “fish-eye” defect, if they are not properly removed by the cleaning process. Chem-Trend’s release agents are readily cleaned by the alkaline washes typically used before a painting or plating process.

Solutions:

Fish eyes can generally be solved by improving surface tension. Small imperfections can be alleviated through improvement in release agent selection and quality, as well as proper application.

RELATED CASE STUDIES