Aluminum-plastic panel and manufacturing method thereof

The invention relates to an aluminum-plastic panel and a manufacturing method thereof. The aluminum-plastic panel comprises a plastic sheet layer, a first aluminum sheet layer and a second aluminum sheet layer, wherein the front and back surfaces of the plastic sheet layer are tightly coated with polymeric films; the polymeric films on the front and back surfaces of the plastic sheet layer are coated with the aluminum sheet layers; and the aluminum sheet layers are coated with paint layers, and the paint layer on the front surface of the plastic sheet layer is coated with a protection film. The manufacturing method comprises the following steps: feeding polyethylene into a drying-chamber agitator for agitation and adding chemical auxiliary agents in the process of agitation; carrying out agitation and plasticization via an extruder and carrying out extrusion via a mold; subjecting extruded plastic to rolling so as to form the plastic sheet layer with a smooth surface and laminating thepolymeric films on the p