| 摘要 |
This invention relates to cap means for preventing resin from remaining in a mold of a runnerless injection molding apparatus. The cap means is of a frusto-conical profile and incorporated in a space formed adjacent to a front end of a heating cylinder. Further, the cap means is provided with an opening from which a pointed tip member of the heating cylinder can project. The invention aims at removing resin scorching, its thermal decomposition, inconveniences of color or material exchange or the like.
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