Final answer:
In injection molding, the tapered channel that connects the nozzle and runners is known as a sprue. It is integral to the injection process as it affects material flow and cooling.
Step-by-step explanation:
The tapered channel connecting the nozzle and runners in injection molding is called a sprue. The sprue serves as a passage through which the molten material is introduced from the nozzle of the injection machine into the runners and then to the mold cavity. The design of the sprue is critical as it affects the flow and cooling of the material, which in turn can impact the quality of the molded part.
It seems like there might be a formatting or contextual issue in your question. The phrase "in 150" does not provide enough information to accurately complete the sentence. However, if you are referring to a tapered channel connecting a nozzle and runners in a context related to fluid dynamics, it could be called a "throat" or a "convergent-divergent section."
If you can provide more details or clarify the context, I'd be happy to help you further.