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Why You MUST Remove Moisture before Powder Coating

September 14, 2017

Powder coating has long been one of the most popular ways companies have chosen to apply a finish to their product. Powder coating offers companies the ability to choose a high quality finish that improves aesthetics as well as functionality. Today we are going to talk about the science behind powder coating as well as the importance of moisture removal in the process.

The Value of Powder Coating

Powder coating became immensely popular in the '60s as a finishing option for mass produced parts. Powder coating allows companies to improve the overall aesthetic of their product while simultaneously making it last longer. Here are just a few key benefits to the powder coating process:

1. Durability - Powder coating is a high quality finish that makes a product more resistant to the wear and tear of every day usage. Scratches, chipping, and even the fading of colour are rarer.

2. Environmentally Friendly - Powder coating is also a relatively green option that companies can pursue for their products. Powder coating dies not use volatile organic compounds in their solution like liquid finishes do. VOCs are released into the atmosphere and cause pollution, a problem that powder coating doesn't present.

3. Affordability - Powder coating is a financially viable option in comparison to other finishes. Powder coating is easy to use and easier to stay in line with various environmental regulations as a result.

The Problem of Moisture

If you decide to go the route of powder coating for your next line of products there is something that you need to be aware of: moisture. Your parts and gear need to be completely dry before putting them into the powder coating machine. Parts that still have water on or in them can suffer during the powder coating process. There are a few reasons why moisture can present problems for you.

1. Powder Clumping

Powder coating is notoriously sensitive to moisture. In fact, moisture can cause your powder to actually go through a clumping process.

2. Moisture and Rust

Moisture in the air, reacting to uncured powder coated products, can lead quickly to potential rust. This is particularly a problem if your parts are going to be stored for a long time.

3. Poor Finish

Finally, moisture on your parts can lead to an overall lackluster end product. A dull and inconsistent finish can be expected if moisture is not properly prohibited.

One of the easiest ways to remove moisture from the powder coating process is by utilising a Dry-Off Oven. A Dry-Off Oven is exactly what it sounds like: a giant machine that allows your parts to be quick-dried at extreme temperatures in order to prep them for the powder coating process.

GP Industries Pty Ltd

Head Office

1 Regal Court,
Vermont South VIC 3133

Phone: (03) 9802 1355

Fax: (03) 9802 6027

Email: gp_ind@bigpond.com


Factory G,
20 Burgess Road,
Bayswater North VIC 3153

Phone: (03) 9761 7676

Fax: (03) 9761 7671

Email: gpfactory@bigpond.com

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