---
title: "Troubleshooting Equipment: Film Property Issues"
description: The Second Part of Our Troubleshooting Series - Common Problems and Solutions
image: https://www.azpowder.com/hubfs/1.png
---

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 Aug 20, 2024 10:16:58 AM

# Troubleshooting Equipment: Film Property Issues

[Naomi Johnson](https://www.azpowder.com/blog/author/naomi-johnson)

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Part Three of Our Troubleshooting Series: Common Issues  with Film and Their Solutions

## Troubleshooting Made Easy

Achieving a perfect finish can sometimes be tricky, even with the best equipment. In this blog, we'll categorize common film property issues to help you quickly identify and resolve them.

Each issue is linked to a table of possible causes and solutions, making it easy to find the answers you need. Click on the specific issue to get back on track with top-quality results!

## Poor Fluidization:

Too Much Orange Peel

| Problem | Solution |
| --- | --- |
| Film thickness too low/high | · Increase/decrease film thickness by adjusting application equipment |
| Oven temperature too low | · Set oven to correct temperature |
| Heat up rate too slow | · Modify oven baffling heat rate at front of oven |
| Back Ionization | · See application blog - Back Ionization section |

## Gloss Is Too High/Low:

Too Low for High Gloss Powder

| Problem | Solution |
| --- | --- |
| Incompatible powder contamination | · Clean application equipment before changing powders |
|  Micropinholing from gassing |  Check component for porosity · Check component for moisture · Check powder for moisture from reclaim or compressed air · Check film thickness, coating too thick |

Too High for Low Gloss Powder

| Problem | Solution |
| --- | --- |
| Undercured | · Check burners, isolate oven · Increase dwell time in oven |

 

## Contamination:

Powder Is Contaminated

| Problem | Solution |
| --- | --- |
| Reclaim in-line sieve torn | · Repair sieve or replace if necessary |
|  Contamination from plant air circulated through spray booth | · Isolate and preferably enclose spray booth area |

## Film Thickness:

Inconsistent Film Thickness

| Problem | Solution |
| --- | --- |
| Guns positioned incorrectly | · Check and reposition guns |
| Reciprocators not matched to line speed | · Adjust line speed · Adjust reciprocator stroke |
| Air speed in booth disturbing spray pattern | · Consult your equipment supplier |
| Defective spray equipment | · Consult your equipment supplier |

## Color:

Off Shade

| Problem | Solution |
| --- | --- |
| Stoving time too long | · Adjust line speed |
| Oven temperature too high | · Decrease oven temperature |
| Variation in film thickness | · See Film Thickness section above |
| Foul oven air | · Check has supply, burners and venting |

## Pin Holding:

Pin Holding and Gassing Through Coating Surface

| Problem | Solution |
| --- | --- |
| Occur during curing as gasses that are trapped escape through the powder     | Check cleanliness of the part Prebaking may help solve this Cleaning the lines and checking for oil |

## Film Aspect:

Texture Pattern Or Metallic Effect Incorrect

| Problem | Solution |
| --- | --- |
| Poor powder charging | · See Application blog - Poor Charging Section |
| Poor earth | · See Application blog - Poor Charging Section |
| Guns too close or distant from component | · Adjust distance |
| Separation in hopper | · See Poor Fluidization section above |
| Powder delivery too high | · Adjust |
| Film thickness too high or low | · Adjust |

## Poor Mechanics:

Poor Impact Resistance / Flexibility

| Problem | Solution |
| --- | --- |
| Under cured | · Increased oven temperature · Increased dwell time in oven |
| Poor cleaning or pretreatment | · Check pretreatment equipment and chemicals |
| Film thickness too high | · Reduce film thickness by adjusting application equipment |
| Change in substrate thickness or type | · Check substrate with supplier |

## Adhesion:

Poor Adhesion

| Problem | Solution |
| --- | --- |
| Poor cleaning or pretreatment | · Check pretreatment equipment and chemicals |
| Change in substrate thickness or type | · Check substrate with supplier |
| Under cured | · Increase oven temperature · Increase dwell time in oven |

## Chemical Resistance:

Poor Chemical Resistance

| Problem | Solution |
| --- | --- |
| Undercured | · Increase oven temperature · Increase dwell time in oven |

## Surface Hardness:

Poor Pencil Hardness / Abrasion Resistance

| Problem | Solution |
| --- | --- |
| Under cured | · Increase oven temperature · Increase dwell time in oven |
|  Under cured | · Reduce oven temperature |

 

## In Conclusion:

By learning about these common problems and how to fix them, you can keep your equipment running smoothly and get great results. Remember, every situation is different, and sometimes you might face issues that need more specific solutions.

Don’t hesitate to reach out to us for expert guidance and support. We are committed to helping you overcome any hurdles and ensure your powder coating process runs smoothly.

 

 

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---

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