| 摘要 |
<p>The device for molding plastic tubes e.g. toothpastes or cosmetics, comprises a plastic material supply (1), a rod (11) sliding in a dowel bush (8) for temporarily supporting a dose of plastic material, an article head mold (6, 7), a mandrel (18) co-operating with the mold, and units for depositing the dose on the dowel bush. The dowel bush includes an upper surface (16) and a side wall (17). The tubes are obtained by compressing the dose (3) of molten plastic material between two parts of the mold. The ratio of the plastic material above the plane and below the plane is 30:70. The device for molding plastic tubes e.g. toothpastes or cosmetics, comprises a plastic material supply (1), a rod (11) sliding in a dowel bush (8) for temporarily supporting a dose of plastic material, an article head mold (6, 7), a mandrel (18) co-operating with the mold, and units for depositing the dose on the dowel bush. The dowel bush includes an upper surface (16) and a side wall (17). The tubes are obtained by compressing the dose (3) of molten plastic material between two parts of the mold. The ratio of the plastic material above the plane and below the plane is 30:70. The amount (20-40%) of plastic material (22) arranged above a plane (20) coincides with the upper surface of the dowel bush. An independent claim is included for a process of molding a plastic material article.</p> |
