| 摘要 |
PURPOSE:To make it possible to easily mold even film-like insert or the like into an integral molded article by a method wherein molten resin is injected under the condition that the insert forming an magnetic attracting part is magnetically attracted to a mold-opened ferromagnetic material mold and then molds are clamped together. CONSTITUTION:The mold assembly concerned consists of a fixed mold 10 and a movable mold 12, both of which are made of ferromagnetic material. In addition, in the movable mold 12, a non-magnetic magnet holding member 16 is arranged. Further, in the magnet holding member 16 a plurality (such as four) of magnets 18 is fitted for holding. A cavity C is composed of both the molds 10 and 12 and the magnet holding member 16. An insert 22, on the surface opposite to the magnet 18 holding side of the magnet holding member 16 of which magnetic power mixed material (magnetic attracting part) 20 is provided, is arranged in the cavity C so as to be attractingly held by the magnetic force of the magnets 18. After the molds are clamped together under the above-mentioned condition, molten resin is injected through a sprue part 24. After the dwelling and cooling processes, the molds are opened for obtaining a molded article. |
