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Why You Must Paint Parts Prior to Hydro Dipping

Why You Must Paint Parts Prior to Hydro Dipping

Why You Must Paint Parts Prior to Hydro Dipping

Hydrodipping creates some of the most impressive-looking plastics. But, you can’t just dip your plastics without preparing them. If you were to dip something without painting it first, the dip would just slide right off. Proper preparations ensure that it sticks to the plastic permanently.

Top Coats Give Parts a Durable Finish

Painting your parts and applying a topcoat enhances their durability, so the film doesn’t damage as easily. It is best to always apply a Satin, Flat, or Gloss Clear coat to give your part the best protection possible.

However, Dips Won’t Stick to Clear Coat Well

Parts that are already painted and cleared will require you to process them for the hydrodip to adhere. These parts will require proper prepping as well as a fresh base coat for the hydrographics to work properly. You cannot dip directly to already cleared parts as it will cause the dipped film to rub or slide off.

This happens because the clear coat has already cured, so after dipping the part, there was nothing for the dip to adhere to.

Your Paint Must Not Be Fully Cured

The reason the dip won’t adhere to the already painted part or plastic is that it can’t bond with the paint. As a result, washing the dipped part would remove most of the dip. This happens when the paint has already been fully cured. Fully-cured paint creates an impermeable barrier, preventing any adhesion.

Hydrodipping Must Occur Within the Dipping Window

So, if paint creates a barrier, why should you paint before dipping? Well, there is something called a bonding window. Paint takes a certain amount of time, after applied, before it cures. The bonding window is when your dips adhere the best. Dipping your products in the middle of this window is crucial. Otherwise, your dips will keep sliding off.

Bonding Windows Vary Depending on the Paint

Do keep in mind that each paint has its own bonding window. Certain paints can have windows as long as several months. At the same time, most of the paints are ready to dip within a few minutes of spraying. That helps eliminate any issues when you are ready to dip them. A large bonding window like that means you’ve got more than enough time to work with your products.

Correctly Dipped Parts Always Need to Be Painted

Dipping a painted part won’t guarantee that your results will be phenomenal. You’ve got to dip them during the paint’s bonding window. This timeframe is when dips bond to paints, instead of just resting on their surface. Applying the dips after the bonding window won’t work out well. When you do that, dips slide right off the item since they can’t bond to anything.