SLOW DRYING

• Posted By : Bill
• 17th February 2016
• Classroom Kits

Poor Drying, Slow Drying, Softness

DESCRIPTION

The paint film requires an excessive drying period, or fails to harden thoroughly.

CAUSE

Slow evaporation of solvent from the paint. This may be due to:
a) Excessive thickness of the paint film.
b) Poor atmospheric conditions during spraying or drying, coldness, humidity, lack of air movement.
c) Insufficient drying time between coats.
d) Insufficient, poor quality or incorrect thinner.

PREVENTION

a) Apply paint in thin web films.
b) Ensure adequate warmth and ventilation. Avoid spraying in excessively humid conditions.
c) Allow sufficient drying time between coats.
d) Use the correct amount of recommended thinner.

RECTIFICATION

Move the vehicle to a warm, well ventilated area. Low heat may be applied to improve drying, but care must be exercised to avoid wrinkling.