| 摘要 |
PROBLEM TO BE SOLVED: To mold a desired plastic container simply and precisely, not using a stretch blow molding method which requires forming a preform, high pressure air blowing, and mold clamping force, or the like. SOLUTION: A mold 110 comprises a cavity 111 having a prescribed inverted truncated conical shape opened upwardly, a flange cavity 112 fitted to the upper opening part of the cavity 111, and a mold driving means 120 for rotating the mold 110 centering around the axis of the cavity 111. Molten plastic resin 10 is charged into the bottom part of the cavity 111 of the mold 110, and the mold 110 is rotated with the mold driving means 120. This causes the molten resin to flow or align by the centrifugal force and to rise along the inner wall face of the cavity 111 to spread thereon, forming an inverted truncated conical shaped container. COPYRIGHT: (C)2004,JPO |
