| 摘要 |
PURPOSE:To prevent unnecessary protuberances which are formed on a resin molded article, corresponding to a gate at the leading end of a nozzle for resin injection from generating, and reduce work manhours for the cutting of the unnecessary protuberances. CONSTITUTION:An area which corresponds to a gate 21 of a cavity 7 which is formed when a separatable pair of forms 1, 2 are fitted is made to be a thicker part 22 which is thicker than a general area 23 which is the other part of the cavity 7. Then, a molten resin is injected into the cavity 7 through the gate 21, and when the resin of the general area 23 of the cavity 7 is hardened, and before the resin of the thicker part 22 of the cavity 7, the pair of forms 1, 2 are separated, and a molded article 25 is removed. Since one part of the resin at the thicker part 22 sticks to the gate 21 side and is broken, on the molded aritcle 25, a depressed part 27 is formed, and unnecessary protuberances are prevented from forming. |
