| 摘要 |
PURPOSE:To provide manufacture, in which half-split bodies can be engaged physically in the direction of rapping when the half-split bodies are abutted and a hollow body is manufactured. CONSTITUTION:In a method in which end faces are abutted mutually in a mold and a molten resin material for joining is injected to abutting sections and joined respectively in injection-molded half-split bodies, a hollow body made of a synthetic resin is manufactured in such a manner that projections 33 alternately projected from the abutting end faces of both half-split bodies are formed in a molten-resin injected void R1 formed to the abutting sections, the molten resin 13 is injected under the state, in which the projections are deformed by the abutting of the half-split bodies by mold clamping, and cured and the half- split bodies are joined. |
