<p>A liquid container (1) includes an outer wall (11) constituting a casing; an inner wall (12) constituting an inner bladder for accommodating liquid, the inner bladder having outer shape substantially equivalent to an inner shape of the outer wall, and the inner bladder having a flexibility and being separable from the casing; a pinch-off portion (13) where portions of the inner wall are welded to each other and are pinched by the outer wall to be supported by the outer wall; wherein the inner wall includes a thicker portion having a larger thickness than another portion of the inner wall, at both sides of the welded portion; and a cavity (20a,20b) provided between an outer surface of the thicker portion of the inner wall and an inner surface of a corresponding portion of an inner surface of the outer wall. <IMAGE></p>
