Foreign matter removing method in silica gel heating film production process

The invention discloses a method for removing foreign matters in a production process of a silica gel heating film. Before hot pressing, the surface of the heating chip is cleaned; wrapping the front surface and the back surface of the heating chip with glass fiber silica gel cloth to form a pre-pressing piece; the pre-pressed piece is placed on a hot pressing table top of a hot press; starting the hot press to perform hot pressing on the pre-pressed part to obtain a silica gel heating film; the silica gel heating film is obtained and placed on an operation table, and a layer of PE film is attached to the surface of the silica gel heating film; the wire rod is welded on the silica gel heating film attached with the PE film, tin beads and stains generated around the welding wire are effectively isolated and conveniently removed, the tin beads and foreign matters are effectively prevented from adhering to a product, the tin beads and the stains on the surface of the silica gel heating film are strictly controll