Preparation method of mask dustproof membrane assembly

The invention discloses a preparation method of a mask dustproof membrane assembly, and the preparation method comprises the following steps: S1, coating a frame for covering a mask with an adhesive, and coating a substrate with fluororesin; s2, the frame and the substrate are put into an oven, so that the adhesive and the fluororesin are cured; s3, peeling off a dustproof film formed by curing the fluororesin on the substrate, and adhering the dustproof film to the frame; and S4, cutting the redundant film on the edge of the frame by using a cutting device, and finally packaging the frame. According to the invention, firstly, by controlling the horizontal movement of the sliding connection frame, the edge-changing cutting of the redundant part of the film can be realized, the purposes of simplifying the running procedure of the equipment and improving the processing efficiency are achieved while the operation of workers is facilitated, secondly, by controlling the vertical movement of the sliding plate, the