| 摘要 |
<p>PURPOSE:To contrive to keep the excellent appearance of a product even when this process is applied in the post working for an external surface by a method in which a head is pressed on a molded product, and after the molded product has been molten and softened by heating, it is cooled and then the head is removed from the molded product. CONSTITUTION:While heating the head 3 of a welding device 1, after the temperature of a cavity portion 3a has reached the melting point of resin, the cavity portion 3a is pressed onto the boss 6a of a molded product. When the boss 6a is molten and softened, the current of the heater 2 is out or suppressed, whereby the temperature of the head 3 is lowered. Consequently, the boss 6a is solidified. After the boss 6a has been solidified, if the head 3 is pulled up and separated from the boss 6a, the boss 6a is caulked according to the surface of the cavity 3a.</p> |
