PE film refers to the film produced by PE film. PE film has moisture resistance and low moisture permeability. In order to improve the performance of PE film, other film layers with different properties will be compounded on PE film to improve the use effect. At present, there are at least the following problems in this technology: when pe lamination is performing composite processing, adhesives are coated on each film layer, and then the composite molding is completed by rolling. In order to cure the adhesive, it is necessary to set The heating element completes the curing of the adhesive by heating, but in the actual use process, there are usually only one pair of pressure rollers with the heating element, so the heating temperature needs to meet the curing temperature of the adhesive. On the one hand, the composite When the PE film is suddenly exposed to high temperature, it is prone to local shrinkage, resulting in wrinkles on the surface. On the other hand, there is insufficient heating, and the curing effect of the adhesive is unstable, which affects the use effect.