Considerations for Double Coating Systems

A double-coat system is a technique of making use of two coatings to the identical substrate. The commonest two-coat system entails laying down a primer, curing it, after which making use of and curing a topcoat. Beneath, we have compiled a listing of ideas that can assist you higher double-coat your substrates, so learn on for extra info!

Concerns for making use of a double-coat system

1. Take a look at any product on a panel or half earlier than making use of any coating. This fashion you may actually see how the product works and might make any needed changes earlier than coating the half.
2. Throughout the pretreatment course of, be sure that the half is correctly rinsed and dried. Additionally, water stains could kind because the pretreatment agent dries by itself. Even for those who apply paint over these water stains, you may even see some dry spots below the coating.
3. A very good floor is essential to the coating! In case you wouldn’t have grounding, you’ll expertise star or reverse ionization issues. Stars seem like you could have sand cash on the floor. Anti-ionization makes the coating look very tough like a grapefruit peel. This implies it’s essential clear the floor of the item in order that the steel is in good contact with the steel.
4. Good movie thickness is vital. A thicker movie construction additionally reduces the charging capability of the topcoat powder when utilizing a two-coat system.
5. Clear coat is often properly utilized, however the thicker the clear coat is, the extra opaque it turns into, and often seems milky white. So do not apply it so thickly over the clear topcoat that you could be not even understand you might be doing it.
6. Don’t overbake between coats. Doing so may cause adhesion issues between coats.
7. Utilizing the identical model of powder for each coatings will will let you keep some consistency.
8. Mud, filth, and even oil in your palms may cause hassle on the road, for instance from leaving fingerprints on the paint. So do not go away it too lengthy between coats and do not deal with the substrate between purposes or curing. Forestall contamination of the product and hold the product sealed in a container when not in quick use.
9. The curing necessities for each coatings are necessary. In case you are utilizing a traditional curing primer, be sure that it’s totally cured or nearly totally cured earlier than making use of a low-cure topcoat. If a second coat is utilized earlier than curing, the primer will doubtless by no means totally treatment.

Abstract

The double coating is a good way to boost and defend substrates from the climate. However whether or not or to not use a twin coating system is determined by what you might be coating and what you want the product to realize.

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