LIQUID CONTAINER, LIQUID CONTAINER MANUFACTURING METHOD, AND METALLIC MOLD FOR LIQUID CONTAINER MANUFACTURING METHOD

摘要

PURPOSE: A liquid container, its manufacturing method, and a metallic mold for the method are provided to make the pinch-off portion of the liquid container not protrude from the outward surface thereof, to manufacture the liquid container by blow molding, and to improve impact resistance and leakproof properties thereof. CONSTITUTION: The 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; and a cavity provided between an outer surface of a thicker portion of the inner wall and an inner surface of a corresponding portion of an inner surface of the outer wall.