CONTAINER OR SEALING DEVICE MADE OF PLASTIC WHICH HAS EDGE SECTION HAVING FOLDED BACK PART AT LOWER SECTION AND IS INJECTION-MOLDED, AND THEIR INJECTION MOLDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a container made of a plastic having an edge section by which a human being can feel smoothness when touching it by the lips or the hand.;SOLUTION: This injection-molded container or sealing device (10) made of the plastic has a side wall (12) which extends from the bottom section wall (14) to the edge section wall (16). An upper section (18) at a part of the edge section wall has both of outward and inward directional components and extends. A lower section (20) of a specified part of the edge section wall has both of downward and inward directional components and extends. In addition, the specified part at a specified level (22) on the lower section has an internal surface (24) and an external surface (26), and respective surfaces have downward and inward directional components and extend. At the specified level, the internal surface and the external surface of the lower section are respectively formed of different die constituent parts (36 and 38) of one die section. When the container or the sealing device is removed from the die section, the internal surface and the external surface of the lower section at the specified level of the specified section are simultaneously removed from one of the die sections which are separated.;COPYRIGHT: (C)2005,JPO&NCIPI