In dry compounding of plastic film, edge sticking failure often occurs. The so-called edge sticking refers to the phenomenon that the plastic film is heated and dried by the drying trunk after being coated and glued, and then rolled up after being extruded by the hot pressing steel roller, and the two sides of the rolled up finished product are bonded together. After the edge sticking failure of the finished winding product, the film layers are firmly bonded at both ends of the winding material, which will make it difficult to separate the finished film. Especially when using two-component two-liquid reactive adhesive, it is easy to appear. In serious cases, it will also lead to the breaking and deformation of the composite finished product, resulting in the scrapping of the product, which is quite painful.