Are you curious about the benefits and drawbacks of PVDF coatings and how they compare to other aluminum finishing options? Perhaps you need more details about how they’re applied, or maybe you want to know how they compare to powder coating.
In this article, we discuss PVDF coatings — and they’re worth considering for many reasons — including their ability to make aluminum products both visually appealing and long-lasting. Even under harsh conditions such as exposure to saltwater spray, they stand up to weathering better than other alternatives.
We’ll start by explaining what PVDF coatings are, then talk about their application process, benefits, and how they differ from powder coat.
What are PVDF Coatings?Polyvinylidene fluoride (PVDF) coatings are a factory-applied, resin-based coating system, typically with embedded color pigment particles that support a wide range of matte-finish colors. They are most commonly used for architectural coating applications due to their superior resistance to weathering by sunlight, moisture, or temperature.
Aluminum wall cladding, curtain wall, and roofing sheet are some of the most common applications for PVDF coatings.
PVDF coatings fit among the fluorocarbon family of plastics, which form bonds that are extremely chemically and thermally stable. This enables some PVDF coating variants to consistently meet or surpass stringent requirements (like AAMA 2605) with minimal fading over long periods of time. You may be wondering how these coatings are applied.
The PVDF Application ProcessPVDF coatings for aluminum are applied in a painting booth by a liquid spray coating gun. The following steps outline the full process for completing a high-quality PVDF coating:
If required for certain applications, a 2-coat or 4-coat process can be used instead of the 3-coat method described above.
Key Benefits of Using PVDF CoatingsThe primary differences between PVDF coatings and powder coatings are that PVDF coatings:
It may depend on your exact applications but if you want highly durable, environmentally resistant, and long-lasting extruded or rolled aluminum products, PVDF coatings may be right for you.
For lower-cost interior coatings with an even wider range of vibrant colors than PVDF coatings, check out our article on powder coating.
For custom architectural extrusions (e.g. curtain wall) visit our custom aluminum extrusions page. And for custom aluminum sheet (e.g. wall cladding) visit our rolled aluminum page.
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