The Problem Of Aluminum-plastic Panel Surface Spotting

The surface of the aluminum-plastic panel has a thumbprint-sized collapse, which is caused by polymer film stiffness. The stiff knots of the polymer membrane vary in size, generally the size of large rice grains, which is white, which is a problem of the quality of the rubber layer. When these protruding particles are composited, the air around them can not be completely extruded like the above bubbling phenomenon, and is wrapped into the plate, and when the stiffness is heated and melted, it can bond with the plate layer, but the place where the air layer is blocked is doubled and directly affected, forming a trap. It is necessary to eliminate the quality problem of this material from the procurement and production management of materials.