| abstract |
The present invention provides a polyimide film free from problems such as foaming during heating, and a polyimide metal laminate in which the film and the metal layer are laminated. The present invention is a polyimide film comprising a polyimide layer (b) and a polyimide layer (a) laminated in contact with the polyimide layer (b), wherein the polyimide layer (a) (B) of the polyimide layer (a) does not have a thermal fusion property, and the polyimide layer (a) has a heat-sealing property, and the polyimide layer , A tetracarboxylic acid component containing 3 ', 4'-biphenyltetracarboxylic acid dianhydride, and a polyimide obtained from a diamine component. |