冷流道和成型零件一塊兒冷卻、固化、成型和頂出。熱流道

連接噴嘴與型腔(或冷豎澆道或冷流道),維持在熔融狀態下,
可以間歇性的注入型腔。
Cold runner is cooled, solidified, formed and ejected, with
parts. Hot runner, connecting nozzle and cavities (or cold
sprues or cold runners), is maintained at a melt and can be
fed intermittently into the cavities.