PPGI/PPGL Coil
Features of color coated roll substrate:
Electro-galvanized substrate: the coating is thinner, and its corrosion resistance is not as good as that of hot-dip galvanized substrate;
Hot-dip galvanized substrate: The thin steel plate is immersed in a molten zinc tank to make a layer of zinc adhere to the surface. This galvanized sheet has good paint adhesion and weldability.
Hot-dip galvanized substrate:
The product is plated with 55% AL-Zn, has excellent corrosion resistance, and its service life is more than four times that of ordinary galvanized steel sheets. It is the replacement product of galvanized sheet.
Features:
(1) It has good durability, and its anti-corrosion ability has a longer service life than galvanized steel sheets;
(2) It has good heat resistance and is less likely to change color at high temperatures than galvanized steel sheets;
(3) Has good heat reflectivity;
(4) It has processing performance and spraying performance similar to that of galvanized steel sheet;
(5) It has good welding performance.
(6) Good performance-price ratio, durable performance and very competitive price. Therefore, whether it is architectural designers, engineers or manufacturers, galvanized steel sheets have been widely used in industrial buildings, steel structures and civil facilities, such as garage doors, gutters and roofs.
Types of Color Coated Coils
Polyester (PE)
Good adhesion, rich color, wide range in formability and outdoor durability, medium chemical resistance, low cost.
Silicon modified polyester
Namely (SMP), the coating film has good hardness, abrasion resistance and heat resistance, as well as good external durability and chalk resistance, gloss retention, average flexibility, and moderate cost.
High Durability Polyester
Namely (HDP), excellent color retention and UV resistance, excellent outdoor durability and chalk resistance, good film adhesion, rich color, excellent cost performance.
Polyvinylidene fluoride
Namely (PVDF), excellent color retention and UV resistance, excellent outdoor durability and chalk resistance, excellent solvent resistance, good formability, dirt resistance, limited color, high cost.
Uses of different coating structures:
2/1: The corrosion resistance and scratch resistance of the single-layer back paint are poor, but it has good adhesion and is mainly used in sandwich panels;
2/1M: The back paint has good corrosion resistance, scratch resistance and processability, and has good adhesion. It is suitable for single-laminated panels and sandwich panels.
2/2: The corrosion resistance, scratch resistance and processing formability of the double-layer back paint are good, and most of them are used for single-layer laminates, but their adhesion is poor, so they are not suitable for sandwich panels.