| 摘要 |
PURPOSE:To enable a screw member to be threadably engaged positively and firmly, by injecting a foamable resin into a mold cavity, molding it into a foamed and molded item, and opening the molds in such a manner that a threaded hole of an insert fitment in communication with an insert hole may be formed by a support pin. CONSTITUTION:A support pin 12 is inserted into a threaded hole 42 of an insert fitment 4, the insert fitment 4 is attracted to a magnet 11, and the pin 12 is secured in such a manner that the tip of the pin 12 is a little projected from the threaded hole 42. Then the mold cavity 3 is filled and molding is carried out to produce a foamed and molded item. Thereafter, when the molds 1, 2 are opened and the pin 12 is drawn from the threaded hole 42 of the fitment 4, a foamed and molded item having an insertion hole in communication with the threaded hole 42 of the fitment 4 can be obtained. Then when a screw member B such as a bolt, screw or the like is screwed into the threaded hole 42 until the tip of the screw member B gets into the insert hole, the member B is threadably engaged with the threaded hole of the fitment positively and firmly. |
