| Composite aluminum sheet | Aluminium alloy veneer | |
| The material | Two layers of 0.5mm thick pure aluminum sheet, sandwiched with PVC or PEC plastic, rolled and hot bonded | 2-3mm aluminum alloy sheet |
| Fluorine carbon coating | The coating thickness is generally 20 μm | The coating thickness is usually 30-40 μm after two or three sprays |
| color | There are a variety of colors to choose from, color is basically divided into monochrome and magic color. Patented color prodsucts have a layer of film on the surface, good durability, good color identity | Color optional according to design and client’s requirements |
| life | Domestic sheet about 10 years, imported sheet color and strength can reach more than 20 years, maintenance free | As long as 15 years, mostly due to weather wind pressure deformation, panel color flower |
| enclosed | The four openings | The four corners are tightly welded |
| Wind resistance | The wind pressure deformation resistance is small, and the wind pressure strength of the imported composite sheet is very high | Strong deformation resistance to wind pressure, easy deformation |
| Resistance to temperature changes | The expansion coefficient of aluminum sheet is quite different from that of plastic, so it is easy to blister and peel | The same material, temperature changes when the wall panel itself has no effect |
| Ray resistance | Lightning resistance, strong electricity is difficult to ground through the composite aluminum sheet, 0.5mm thick aluminum sheet will be broken down | It can act as a good conductor of electricity, sending huge lightning currents to the ground quickly through the building’s grounding system |
| processability | Can be processed on site, can cope with the size change caused by the construction error on site | Made by the manufacturer, it has poor adaptability to the errors of field construction and high requirements for secondary design |
| To realize | Generally 80%—95% | 100% |
| yield | If the groove depth is not well controlled, the outer aluminum sheet will be damaged, resulting in bending and fracture, resulting in waste prodsucts. The rate of good prodsucts is generally 96%——98% | Factory prodsuction, yield of 100% |
| The environmental protection | It involves the selection of core material. General core material in high temperature will prodsuce harmful gas, not fire, difficult to recover | Fireproof, easy to recycle, no environmental pollution |
| Scope of application | Suitable for curtain wall engineering | Suitable for facade decoration, elevated corridor, pedestrian bridge, low curtain wall |