| 摘要 |
PURPOSE:To mold integrally a composite article firmly and to prevent burrs from being generated by a method in which in the manufacture of the article integrally molded with a plastic molded article and elastic sealing member, the groove having a small protrusion on its edge is molded on a sealing face, and the protrusion is crushed by the mold-clamping force of a secondary mold, and after it has been bulged out on the side of an opening, sealing material is poured thereinto. CONSTITUTION:A cavity 3 is formed with together a cavity mold 1 and a core mold 2, and the molded body in which a groove 6 is provided on a sealing face 5, is molded by injecting plastic material. The cordlike small protrusions 6b are molded in the position a little more recessed to a sealing face 5 than the corner 6a of its edge along said groove. In the state where the molded body 4 is left in the cavity mold 1, the mold is opened. Next, when a primary core mold 2 is replaced by a secondary core mold 7, and the molds are clamped, the small protrusions 6b are crushed by the mold- clamping force and are squeezed out on the side of the opening 10 of the groove, and the width of the opening 10 is more narrowed than the width of a bottom face 11. Next, secondary sealing material is poured into a cavity 8, thereby molding an elastic sealing member 9 on the sealing face 5 of the molded body 4. |
