Patent ID: 8287108

Claim:
A liquid container comprising: a hole forming surface in which a hole is formed; a cover film bonded to the hole forming surface in such a manner as to cover the hole, the cover film having an opening communicating with the hole; and a seal film sealing the opening of the cover film, the seal film being bonded to the cover film in such a manner that the seal film becomes peelable from the cover film, wherein the cover film is formed by stacking a plurality of films including a bonding layer film and a surface layer film, the bonding layer film being welded to the hole forming surface, the surface layer film being arranged to be exposed to the side corresponding to a surface of the cover film, wherein the seal film is formed by stacking a plurality of films including a first film and a second film, the first film being welded to the surface layer film, the second film being arranged to be exposed to the side corresponding to a surface of the seal film, and wherein the surface layer film and the second film melt at a melting point higher than the melting point of the first film and exhibit higher heat resistance than the first film.