Abstract: A fluorine resin film to be provided includes a fluorine resin, wherein the fluorine resin film has an average value of 1200% or more of a tensile elongation at break in a first direction and a tensile elongation at break in a second direction under a 180° C. atmosphere, the first direction and the second direction being in-plane directions and orthogonal to each other. This fluorine resin film can be used as a coating film for coating the surface of a rubber-containing substrate included in a molded rubber body and is suitable for manufacturing a molded rubber body having a surface coated with the film.

Abstract: A fluorine resin film to be provided includes a fluorine resin, and has a surface subjected to a modification treatment. In a C1s narrow spectrum at the surface evaluated by electron spectroscopy for chemical analysis, an intensity of a peak at a 284 eV chemical shift is 0.80 or less when an intensity of a maximum peak is set to 1. This fluorine resin film is a fluorine resin film having a surface subjected to a modification treatment, and is suitable for manufacturing a molded rubber body having a surface coated with the film.

Abstract: A fluorine resin film to be provided includes a fluorine resin, and has a surface subjected to a modification treatment. The fluorine resin film has, at the surface, the following proportion of each of carbon, oxygen, and fluorine elements based on 100 atom % of a sum of the elements: 30 atom % or more and 70 atom % or less of carbon; 0.6 atom % or more and less than 13 atom % of oxygen; and 60 atom % or less of fluorine. This fluorine resin film is a fluorine resin film having a surface subjected to a modification treatment, and is suitable for manufacturing a molded rubber body having a surface coated with the film.