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Cured Finish Problems

 

5. Coating Finish-Cured Physical Properties

What is the problem you are facing?

Poor impact resistance/poor flexibility.

Possible Causes Possible Solutions
1. Under cured. 1a. Increase oven temperature.
1b. Increase dwell time in oven.
2. Poor cleaning or pre-treatment. 2. Check pre-treatment equipment and chemicals.
3. Film thickness too high. 3. Reduce film thickness by adjusting application equipment.
4. Change in substrate thickness or type. 4. Check substrate with supplier.
5. Powder resin type or formula. 5. Check with powder manufacturer.

 

Poor adhesion.

Possible Causes Possible Solutions
1. Poor cleaning or pre-treatment. 1. Check pre-treatment process and chemicals.
2. Change in substrate. 2. Check substrate with supplier.
3. Under cured. 3a. Increase oven temperature.
3b. Increase dwell time in oven.
4. Powder resin type or formula. 4. Check with powder manufacturer.

 

Poor corrosion resistance.

Possible Causes Possible Solutions
1. Poor cleaning or pre-treatment. 1. Check pre-treatment equipment and chemicals.
2. Under cured. 2a. Increase oven temperature.
2b. Increase dwell time in oven.

 

Poor chemical resistance.

Possible Causes Possible Solutions
1. Under cured. 1a. Increase oven temperature.
1b. Increase dwell time in oven.
2. Powder resin type or formula. 2. Check with powder manufacturer.

 

Poor pencil hardness/poor abrasion resistance.

Possible Causes Possible Solutions
1. Under cured. 1. Increase oven dwell time.
2. Powder resin type or formula. 2. Check with powder manufacturer.