1. The back panel should be made of the same material as the front panel, with its surface treated by anodization. The side exposed to the air should be coated with a protective coating. The coating material can be polyester, epoxy, acrylic, or other materials to prevent corrosion of the aluminum panel due to long-term exposure to the air.

2. Back panel & front panel: The front panel is generally made of aluminum alloys with grades such as 3003 and 5005, while 1100 aluminum sheets with low alloy content are rarely used.

3. Honeycomb core material: The aluminum honeycomb core is manufactured on an aluminum honeycomb core production line using aluminum foil and special honeycomb node adhesive. The factors affecting the performance of the honeycomb core mainly include parameters such as aluminum foil, node adhesive, and honeycomb core specifications.

Relevant Technologies for Marine-Grade Aluminum Honeycomb Panels:

1. Roll forming technology: In the manufacturing process of the front and back panels, the edges of the panels need to be folded. The folding machine used in traditional processes causes stress inside the metal due to one-time rapid folding, and also causes micro-damage to the metal interior, affecting the service life of the metal.

2. Continuous pre-roll coating technology: This is a technology that adheres the coating color to the aluminum coil during its forming process. The coating has strong adhesion, good durability, uniform color, and there is basically no color difference between products of the same batch.

3. Forming technology: The panel is gradually formed through a series of molds, which fully releases the internal stress of the panel. It protects the coating on the panel surface from damage, making it more durable. The entire production process ensures high precision in the processing size of the panel. The continuous thermal composite production process is efficient and fast.