| 摘要 |
PURPOSE:To mold a part having large difference of unevenness by means of a shallow drawing molding machine by using a molding tool corresponding to a minimized maximum height of deformed profile of a product beforehand in vacuum molding. CONSTITUTION:An adequate point 10 is selected on the profile A of a finished product, around which profiles A1 and A2 of both sides are folded outward to form a deformed profile comprising two top points. The maximum height h of said deformed profile is about half of height H of original profile. Male and female dies 13 and 14 for deformed profile are provided, and a thermoplastic belt-shaped plastic sheet 15 such as polyethylene or the like is inserted between said bond molding dies 13 and 14 to carry out vacuum molding. A semi-finished deformed product molded is folded around a point 10 and is processed to be restored to the original profile. |
