Comparison with precoat
Comparing "Precoat" and "Polyural"! Detailed explanation to follow.
The outdoor units designed for salt damage resistance and heavy salt damage resistance use aluminum fins that are pre-coated with a polymer, which protects the aluminum from salt damage and other hazards. However, while the thickness of the Polyual membrane is 20 to 25 micrometers, the pre-coat is only about 2 to 3 micrometers thick. After being exposed to salt damage for 3 to 5 years, rust may occur, or the pre-coat membrane may degrade due to ultraviolet rays. Additionally, since the pre-coat involves processing aluminum sheets coated with polymer, the cut surfaces, internal cutouts, and contact points with copper pipes are exposed to the outside air, making them entry points for salt damage and corrosion. The aluminum fin deterioration prevention coating "Polyual" addresses these issues. [Overview] The Polyual coating membrane is applied after the heat exchanger assembly, ensuring that both the contact points with the copper pipes at the fin tips and the internal cutout areas are well protected. In the salt damage specification pre-coat, these areas are exposed to outside air. *For more details, please refer to the PDF materials or feel free to contact us.
- Company：BLYGOLD JAPAN
- Price：Other
