| 摘要 |
PURPOSE:To obtain a thin and suitable outer cover for an interior part by performing a vacuum molding by supplying almost necessary area under a state where an initial sheet thickness is kept as it is. CONSTITUTION:When both sides of a cut sheet 4 of thermoplastic having a necessary width are fixed to endless conveyor chanes 1, 1 and a stationary part of the cut sheet 4 moving through heating arrives at within an attachment 3 of a molding part on a molding tool, narrowing of a width between conveyor chanes 1, 2 is performed. The cut sheet, for example, is regarded as a state 4-3, a vacuum molding tool 5 is pushed up, the cut sheet 4-3 is inserted into a formed part 9, set up under an approximate state to the formed part 9 of a mold like a state 4-4 and molded into a fixed form by running completely along the formed part 9 with vacuum operation. Therefore, since a spreading factor of the sheet to be stretched is small, dispersion of thicknesses can be controlled to a minimum. Therefore, the thinnest possible thickness can be secured and a uniform sheet thickness is obtained easily. |
